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[Android 原创] 某手游反外挂分析

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发表于 2017-11-1 14:25 | 显示全部楼层
本帖最后由 我是小三 于 2017-11-1 14:40 编辑

个人博客: http://www.cnblogs.com/2014asm/
工具与环境:
IDA7.0
JEB2.2.5
Nexus5
Android4.4
目录
:一:app简单分析与java层反编译
二: compatible.so反调试与反反调试
三: compatible.so注册jni函数分析
四: stub.so反调试与反反调试
五: stub.so注册jni函数分析
六: Assembly-CSharp.dll解密分析
七: libengine模块分析
八:总结
一:app简单分析与java层反编译
整体图:

1

1

1.最近在学习手游保护方面的技术,本文是学习过程中分析某反外挂的一点记录,高手莫要见笑,有不对的地方还请指教,首先简单通过资源目录中文件名做基本了解,在lib目录中有libmono.so、libunity.so,资源目录中存在(assets\bin\Data\Managed\Assembly-CSharp.dll),应该是unity 3D编写,通过反编译发现该文件己被加密,在资源目录下armeabi文件夹中还存放着libengine.sox与libstub.sox文件,看名字猜测很可能这两个文件就是反外挂其中的一些模块了,在看看lib目录下只有libcompatible.so模块比较可疑。如下图所示:

2

2

3

3

4

4

当我们用调试器附加游戏程进时会有如下提示:

5

5


被发现有调试器附加,下节我们将分析它的反调试机制。2.通过JEB反编译来看看大致流程,反编译后先找到application类,代码如下图:

6

6

主要是加载so模块,so名称字符串被加密了,解密出来后so名称"compatible",将compatible.so放到IDA中反编译发现函数名被混淆了,字符串己加密,如下图:

7

7

通过以上简单分析,我们主要关注的重点关注的模块主要有lib目录下的libcompatible.so与资源目录中的libengine.sox与libstub.sox,还有就是发现java层的字符串与函数名都被混淆,so模块中的字符串也函数名也被混淆。3.拷贝资源,解密libstub.sox并加载 。在Lcom/inca/security/Core/AppGuardEngine初始函数<init>(Landroid/content/Context;Lcom/inca/security/AppGuard/AppGuardEventListener;Z)V中将判断X86或ARM平台并将对应的\assets\appguard中的libengine.sox、libstub.sox、update.dat拷贝到程序安装目录。JEB未能正常反编译出java代码,看smali代码。
[Asm] 纯文本查看 复制代码
:1946
00001946  const/4             v9, 3
00001948  if-ge               v6, v9, :1C16
:194C
0000194C  invoke-static       Binder->getABI()I
00001952  move-result         v6
00001954  move-object/from16  v0, p0
00001958  move-object/from16  v1, p1
0000195C  invoke-virtual      AppGuardEngine->iiIIIiiiIi(Context, I)Z, v0, v1, v6  # 拷贝资源
00001962  move-result         v6
00001964  if-eqz              v6, :1BE0
:1968
00001968  new-instance        v6, qb
0000196C  invoke-static       JNISoxProxy->getContext()Context
00001972  move-result-object  v9
00001974  invoke-direct       qb-><init>(Context)V, v6, v9
0000197A  const-string        v9, "fChY~_h\u0004yEr"  # libstub.sox
0000197E  invoke-virtual      qb->iiIIIiiiIi([B)V, v6, v8
00001984  invoke-static       b->iiIIIiiiIi(String)String, v9
0000198A  move-result-object  v9
0000198C  const-string        v10, "j\u000Fd\u0015r\u0013dHu\t"  # libstub.so
00001990  invoke-static       yb->iiIIIiiiIi(String)String, v10
00001996  move-result-object  v10
00001998  const/4             v11, 0
0000199A  invoke-virtual      qb->iiIIIiiiIi(String, String, [B)Z, v6, v9, v10, v11  # 解密libstub.sox((最终传入so层解密private static native byte[] iIiIIIiIiI(byte[] arg0, int arg1)))
000019A0  move-result         v6
000019A2  if-eqz              v6, :1BE0
:19A6
000019A6  new-instance        v6, File
000019AA  new-instance        v9, StringBuilder
000019AE  invoke-direct       StringBuilder-><init>()V, v9
000019B4  const/4             v10, 0
000019B6  invoke-static       JNISoxProxy->getContext()Context
000019BC  move-result-object  v11
000019BE  invoke-virtual      Context->getFilesDir()File, v11
000019C4  move-result-object  v11
000019C6  invoke-virtual      File->getAbsolutePath()String, v11
000019CC  move-result-object  v11
000019CE  invoke-virtual      StringBuilder->insert(I, String)StringBuilder, v9, v10, v11
000019D4  move-result-object  v9
000019D6  const-string        v10, "%FcHy^\u007FH$Ye"  # /libstub.so
000019DA  invoke-static       b->iiIIIiiiIi(String)String, v10
000019E0  move-result-object  v10
000019E2  invoke-virtual      StringBuilder->append(String)StringBuilder, v9, v10
000019E8  move-result-object  v9
000019EA  invoke-virtual      StringBuilder->toString()String, v9
000019F0  move-result-object  v9
000019F2  invoke-direct       File-><init>(String)V, v6, v9
000019F8  invoke-virtual      File->exists()Z, v6
:19FE
000019FE  move-result         v9
00001A00  if-eqz              v9, :1BE0
:1A04
00001A04  invoke-virtual      File->getAbsolutePath()String, v6
00001A0A  move-result-object  v9
00001A0C  invoke-static       System->load(String)V, v9  # 加载指定路径的SO
00001A12  invoke-direct/range AppGuardEngine->lllIIIlllI(Context)V, p0 .. p1  # 调用Native
:1A18
00001A18  invoke-virtual      File->delete()Z, v6
00001A1E  new-instance        v6, File
00001A22  new-instance        v9, StringBuilder
00001A26  invoke-direct       StringBuilder-><init>()V, v9
00001A2C  const/4             v10, 0
00001A2E  invoke-static       JNISoxProxy->getContext()Context
00001A34  move-result-object  v11
00001A36  invoke-virtual      Context->getFilesDir()File, v11
00001A3C  move-result-object  v11
00001A3E  invoke-virtual      File->getAbsolutePath()String, v11
00001A44  move-result-object  v11
00001A46  invoke-virtual      StringBuilder->insert(I, String)StringBuilder, v9, v10, v11
00001A4C  move-result-object  v9
00001A4E  const-string        v10, ")\no\u0004u\u0012s\u0004(\u0015i\u001E"  # /libstub.sox
00001A52  invoke-static       yb->iiIIIiiiIi(String)String, v10
00001A58  move-result-object  v10
00001A5A  invoke-virtual      StringBuilder->append(String)StringBuilder, v9, v10
00001A60  move-result-object  v9
00001A62  invoke-virtual      StringBuilder->toString()String, v9
00001A68  move-result-object  v9
00001A6A  invoke-direct       File-><init>(String)V, v6, v9
00001A70  invoke-virtual      File->delete()Z, v6

4. 解密libstub.sox模块。
解密函数在类com/inca/security/qb中iiIIIiiiIi函数,代码如下:
[Asm] 纯文本查看 复制代码
 @SuppressLint(value={"SdCardPath"}) public boolean iiIIIiiiIi(String arg25, String arg26, byte[] arg27) throws IOException, InvalidKeyException {
        Object v18;
        Object v5_2;
        long v16_1;
        Method v8_3;
        Class v11_2;
        Object v7_2;
        Object v4_7;
        Method v15;  // doFinal
        Method v14_1;  // init java.security.Key
        Object v13_1;  // RSA/ECB/PKCS1Padding
        int v8_1;
        int v7;
        FileInputStream v13;
        Method v4_6;
        byte[] v7_1;
        boolean v4_2;
        Method v5_1;  // read
        byte[] v12;
        byte[] v11;
        Object v10;  // /
        Class v9;  // java.io.FileInputStream
        try {
            v9 = Class.forName(vb.iiIIIiiiIi("&3:3b;#|\n; 7\u0005<<\'8\u00018 )3!"));  // java.io.FileInputStream
            Constructor v4_1 = v9.getConstructor(String.class);
            v10 = v4_1.newInstance(arg25.indexOf(yb.iiIIIiiiIi("I")) == 0 ? arg25 : new StringBuilder().insert(0, this.iiIiiiIIIi).append(arg25).toString());  // /
            v11 = new byte[16];
            v12 = new byte[4];
            v5_1 = v9.getMethod(vb.iiIIIiiiIi(" )3("), byte[].class, Integer.TYPE, Integer.TYPE);  // read
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(3));
            if(v11[0] == 83 && v11[1] == 79 && v11[2] == 88) {  // 判断开头是否为SOX
                goto label_82;
            }

            v4_2 = false;
            return v4_2;
        }
        catch(Exception v4) {
            goto label_78;
        }

    label_82:
        int v4_3 = 3;
        try {
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(2));
            if((((short)((((short)v11[0])) | (((short)v11[1])) << 8))) != 1) {
                return false;
            }

            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(1));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(2));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(2));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(4));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(4));
            v5_1.invoke(v10, v12, Integer.valueOf(0), Integer.valueOf(4));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(12));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(16));
            v5_1.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(16));
            byte[] v4_5 = null;
            if(v11[0] == 0 || v11[1] == 0 || v11[14] == 0 || v11[15] == 0) {
                v7_1 = v4_5;
                v4_6 = v5_1;
                goto label_291;
            label_276:
                while(v7 < 64) {
                    v13.read(v11);
                    if(v8_1 == v14) {
                        v4_5 = new byte[16];
                        System.arraycopy(v11, 0, v4_5, 0, 16);
                    }

                    v7 = v8_1 + 1;
                    v8_1 = v7;
                }

                v13.close();
                v7_1 = v4_5;
                v4_6 = v5_1;
            }
            else {
                File v8 = new File(String.format(yb.iiIIIiiiIi("CuI#\u0015(\u0012v\r"), arg25.substring(0, arg25.lastIndexOf(47)), qb.iiIIIiiiIi(v11)));  // %s/%s.tpk
                if(v8.exists()) {
                    v13 = new FileInputStream(v8);
                    v13.read(v11);
                    int v14 = (Math.abs(v11[0] << 24 | v11[4] << 16 | v11[8] << 8 | v11[12]) + 1) % 64;
                    v7 = 1;
                    v8_1 = 1;
                    goto label_276;
                }
                else {
                    return false;
                }
            }

        label_291:
            v4_6.invoke(v10, v11, Integer.valueOf(0), Integer.valueOf(4));
            v4_5 = new byte[(v11[3] & 255) << 24 | 0 | (v11[2] & 255) << 16 | (v11[1] & 255) << 8 | v11[0] & 255];
            v5_1 = v9.getMethod(vb.iiIIIiiiIi(" )3("), byte[].class);  // read
            v5_1.invoke(v10, v4_5);
            Class v8_2 = Class.forName(yb.iiIIIiiiIi("\fg\u0010g\u001E(\u0005t\u001Fv\u0012iHE\u000Fv\u000Ec\u0014"));  // javax.crypto.Cipher
            Method v11_1 = v8_2.getMethod(vb.iiIIIiiiIi("+78\u001B\"!83\"1)"), String.class);  // getInstance
            v13_1 = v11_1.invoke(null, yb.iiIIIiiiIi("T5GIC%DIV-E576g\u0002b\u000Fh\u0001"));  // RSA/ECB/PKCS1Padding
            v14_1 = v8_2.getMethod(vb.iiIIIiiiIi(";\";8"), Integer.TYPE, Class.forName(yb.iiIIIiiiIi("\fg\u0010gHu\u0003e\u0013t\u000Fr\u001F(-c\u001F")));  // init java.security.Key
            v14_1.invoke(v13_1, Integer.valueOf(2), this.iIiIIiIiIi);
            v15 = v8_2.getMethod(vb.iiIIIiiiIi("(=\n;\"3 "), byte[].class);  // doFinal
            v4_7 = v15.invoke(v13_1, v4_5);
            if(v7_1 != null) {
                v13_1 = v11_1.invoke(null, yb.iiIIIiiiIi("\'C5"));  // AES
                v14_1.invoke(v13_1, Integer.valueOf(2), Class.forName(vb.iiIIIiiiIi("&3:34|/ 5\"8=b!<7/|\u001F7/ )&\u000775\u0001<7/")).getConstructor(byte[].class, String.class).newInstance(v7_1, yb.iiIIIiiiIi("\'C5")));  // javax.crypto.spec.SecretKeySpec AES
                v4_7 = v15.invoke(v13_1, v4_7);
            }

            v7_2 = null;
            v7_2 = v11_1.invoke(v7_2, vb.iiIIIiiiIi("\r\u0017\u001F"));
            v14_1.invoke(v7_2, Integer.valueOf(2), Class.forName(yb.iiIIIiiiIi("\fg\u0010g\u001E(\u0005t\u001Fv\u0012iHu\u0016c\u0005(5c\u0005t\u0003r-c\u001FU\u0016c\u0005")).getConstructor(byte[].class, String.class).newInstance(v4_7, vb.iiIIIiiiIi("\r\u0017\u001F")));
            v11_2 = Class.forName(yb.iiIIIiiiIi("\fg\u0010gHo\t($\u007F\u0012c\'t\u0014g\u001FI\u0013r\u0016s\u0012U\u0012t\u0003g\u000B"));
            v13_1 = v11_2.getConstructor(null).newInstance(null);
            byte[] v14_2 = new byte[1024];
            v15 = v8_2.getMethod(vb.iiIIIiiiIi("\'<6-&)"), byte[].class, Integer.TYPE, Integer.TYPE);
            Method v16 = v11_2.getMethod(yb.iiIIIiiiIi("\u0011t\u000Fr\u0003"), byte[].class);
            for(v4_6 = v5_1; true; v4_6 = v5_1) {
                v4_3 = v4_6.invoke(v10, v14_2).intValue();
                if(v4_3 == -1) {
                    break;
                }

                v16.invoke(v13_1, v15.invoke(v7_2, v14_2, Integer.valueOf(0), Integer.valueOf(v4_3)));
            }

            v16.invoke(v13_1, v8_2.getMethod(vb.iiIIIiiiIi("(=\n;\"3 "), null).invoke(v7_2, null));
            v4_7 = v11_2.getMethod(yb.iiIIIiiiIi("\u0012i$\u007F\u0012c\'t\u0014g\u001F"), null).invoke(v13_1, null);
            if(arg25.indexOf(vb.iiIIIiiiIi("c")) != 0) {
                arg26 = new StringBuilder().insert(0, this.iiIiiiIIIi).append(arg26).toString();
            }

            Class v7_3 = Class.forName(yb.iiIIIiiiIi("l\u0007p\u0007(\u000FiH@\u000Fj\u0003I\u0013r\u0016s\u0012U\u0012t\u0003g\u000B"));
            v8_3 = v7_3.getMethod(vb.iiIIIiiiIi("; %&)"), byte[].class);
            v14_1 = v7_3.getMethod(yb.iiIIIiiiIi("\u0005j\tu\u0003"), null);
            v15 = v7_3.getMethod(vb.iiIIIiiiIi("*>9!$"), null);
            v7_2 = v7_3.getConstructor(String.class).newInstance(arg26);
            v16_1 = na.iIIIiiiIII(((byte[])v4_7), 5);
            v5_2 = null;
        }
        catch(Exception v4) {
            goto label_78;
        }

        try {
            v18 = Binder.getReserved1();
            if(v18 == null) {
                goto label_761;
            }
        }
        catch(Exception v4) {
            goto label_760;
        }

        try {
            v5_2 = v18.getClass().getMethod(yb.iiIIIiiiIi("o/o/O\u000Fo/o/"), byte[].class, Integer.TYPE).invoke(v18, v4_7, Integer.valueOf(((int)v16_1)));
        }
        catch(Exception v4) {
            try {
                v4.printStackTrace();
                goto label_659;
            label_761:
                byte[] v5_3 = AppGuardEngine.iiIIIiiiIi(((byte[])v4_7), ((int)v16_1));  // 传入SO层解密 (该Native函数在compatible.so进行动态注册)
            label_760:
            }
            catch(Exception v4) {
                goto label_760;
            }
        }

    label_659:
        v4_3 = 3;
        try {
            int v12_1 = v12[0] & 255 | ((v12[v4_3] & 255) << 24 | 0 | (v12[2] & 255) << 16 | (v12[1] & 255) << 8);
            Class v16_2 = Class.forName(vb.iiIIIiiiIi("&3:3b\'8; |6;<|\r6 7>a~"));
            Object v17 = v16_2.getConstructor(null).newInstance(null);
            v16_2.getMethod(yb.iiIIIiiiIi("s\u0016b\u0007r\u0003"), byte[].class, Integer.TYPE, Integer.TYPE).invoke(v17, v5_2, Integer.valueOf(0), Integer.valueOf(v5_2.length));
            v16_1 = v16_2.getMethod(vb.iiIIIiiiIi("5)&\u001A3 \')"), null).invoke(v17, null).longValue();
            if(v12_1 != 0 && v12_1 != (((int)v16_1))) {
                v14_1.invoke(v7_2, null);
                v4_2 = false;
            }
            else {
                v8_3.invoke(v7_2, v5_2);
                v15.invoke(v7_2, null);
                v14_1.invoke(v7_2, null);
                v9.getMethod(yb.iiIIIiiiIi("\u0005j\tu\u0003"), null).invoke(v10, null);
                v11_2.getMethod(vb.iiIIIiiiIi("/>#!)"), null).invoke(v13_1, null);
                v9.getMethod(yb.iiIIIiiiIi("\u0005j\tu\u0003"), null).invoke(v10, null);
                v4_2 = true;
            }

            return v4_2;
        }
        catch(Exception v4) {
        label_78:
            Exception v5_4 = v4;
            v4_2 = false;
            v5_4.printStackTrace();
            return v4_2;
        }
    }

java层AES解密再传入传入so层解密private static native byte[] iIiIIIiIiI(byte[] arg0, int arg1)。
5. 解密libengine.sox模块
在Lcom/inca/security/Core/AppGuardEngine;->iiIIIiiiIi([B)Z生成一个随机数后SHA1后字会串做为解密后的文件名存放在/data/data/包名/files/目录下,解密函数与上一步相同。
生成随机数代码:
[Asm] 纯文本查看 复制代码
.method private synthetic iiIIIiiiIi([B)Z
          .registers 12
          .annotation build SuppressLint
              value = {
                  "TrulyRandom"
              }
          .end annotation
          .annotation system Throws
              value = {
                  AppGuardException
              }
          .end annotation
00000000  const/4             v9, 2
00000002  const/16            v8, -0x007E
00000006  const/16            v7, 0x0030
0000000A  const/4             v2, 0
0000000C  const/4             v3, 1
:E
0000000E  const-string        v1, "U.GW"  # SHA1
00000012  invoke-static       yb->iiIIIiiiIi(String)String, v1
00000018  move-result-object  v1
0000001A  invoke-static       MessageDigest->getInstance(String)MessageDigest, v1
:20
00000020  move-result-object  v1
:22
00000022  new-instance        v4, SecureRandom
00000026  invoke-direct       SecureRandom-><init>()V, v4
0000002C  const/16            v5, 0x0100
00000030  new-array           v5, v5, [B
00000034  const/16            v6, 0x0126
00000038  invoke-virtual      SecureRandom->nextBytes([B)V, v4, v5
0000003E  invoke-virtual      MessageDigest->update([B)V, v1, v5
00000044  invoke-virtual      SecureRandom->nextBytes([B)V, v4, v5
0000004A  invoke-virtual      MessageDigest->update([B)V, v1, v5
00000050  new-instance        v4, BigInteger
00000054  invoke-virtual      MessageDigest->digest()[B, v1
0000005A  move-result-object  v1
0000005C  invoke-direct       BigInteger-><init>(I, [B)V, v4, v3, v1
00000062  const/16            v1, 0x0010
00000066  invoke-virtual      BigInteger->toString(I)String, v4, v1  # 随机数后SHA1值
0000006C  move-result-object  v1
0000006E  iput-object         v1, p0, AppGuardEngine->IiIIiiiiii_Random_SHA1:String  # 解密后文件名
//解密并调用
00000D7A  new-instance        v4, qb
00000D7E  invoke-static       JNISoxProxy->getContext()Context
00000D84  move-result-object  v5
00000D86  invoke-direct       qb-><init>(Context)V, v4, v5
00000D8C  const-string        v5, "fChOdMcDo\u0004yEr"  # libengine.sox
00000D90  invoke-virtual      qb->iiIIIiiiIi([B)V, v4, v1
00000D96  invoke-static       b->iiIIIiiiIi(String)String, v5
00000D9C  move-result-object  v1
00000D9E  iget-object         v5, p0, AppGuardEngine->IiIIiiiiii_Random_SHA1:String
00000DA2  const/4             v6, 0
00000DA4  invoke-virtual      qb->iiIIIiiiIi(String, String, [B)Z, v4, v1, v5, v6  # 解密libengine.sox(最终传入so层解密private static native byte[] iIiIIIiIiI(byte[] arg0, int arg1))
:DAA
00000DAA  move-object         v0, p0
:DAC
00000DAC  invoke-static       JNISoxProxy->getContext()Context
00000DB2  move-result-object  v1
00000DB4  new-instance        v4, StringBuilder
00000DB8  invoke-direct       StringBuilder-><init>()V, v4
00000DBE  invoke-static       JNISoxProxy->getContext()Context
00000DC4  move-result-object  v5
00000DC6  invoke-virtual      Context->getFilesDir()File, v5
00000DCC  move-result-object  v5
00000DCE  invoke-virtual      File->getAbsolutePath()String, v5
00000DD4  move-result-object  v5
00000DD6  invoke-virtual      StringBuilder->insert(I, String)StringBuilder, v4, v2, v5
00000DDC  move-result-object  v4
00000DDE  const-string        v5, "%"  # /
00000DE2  invoke-static       b->iiIIIiiiIi(String)String, v5
00000DE8  move-result-object  v5
00000DEA  invoke-virtual      StringBuilder->append(String)StringBuilder, v4, v5
00000DF0  move-result-object  v4
00000DF2  iget-object         v5, p0, AppGuardEngine->IiIIiiiiii_Random_SHA1:String
00000DF6  invoke-virtual      StringBuilder->append(String)StringBuilder, v4, v5
00000DFC  move-result-object  v4
00000DFE  invoke-virtual      StringBuilder->toString()String, v4
00000E04  move-result-object  v4
00000E06  invoke-direct       AppGuardEngine->IIIIIIIlIl(Context, String, [B)I, v0, v1, v4, p1  # 将解密后将libengine文件路径传入该Native函数中调用
00000E0C  move-result         v1
00000E0E  if-gez              v1, :E9A

解密后的so会在Native函数中通过dlopen、dlsym来调用。
二: compatible.so反调试与反反调试
1. 反调试 (文件偏移 13284)
[Asm] 纯文本查看 复制代码
.text:757DB284             loc_757DB284                            ; CODE XREF: JNI_OnLoad+254↑j
.text:757DB284 00 00 5C E3 CMP     R12, #0
.text:757DB288 18 00 00 BA BLT     loc_757DB2F0
.text:757DB28C 00 30 68 E2 RSB     R3, R8, #0
.text:757DB290 03 00 20 E0 EOR     R0, R0, R3
.text:757DB294 08 80 80 E0 ADD     R8, R0, R8
.text:757DB298 0D 00 58 E3 CMP     R8, #0xD                        ; 判断SDK版本
.text:757DB29C 9F FF FF DA BLE     loc_757DB120
.text:757DB2A0
.text:757DB2A0             loc_757DB2A0                            ; CODE XREF: JNI_OnLoad+2E4↓j
.text:757DB2A0 7D 2B 00 EB BL      _Z11lIlIlIIIIIIv                ; 创建3进程和多线程反调试
.text:757DB2A4 00 20 50 E2 SUBS    R2, R0, #0                      ; char *

如果SDK大于0XD时就创建3进程与多线程反调试:
[Asm] 纯文本查看 复制代码
.text:756F84B0             EXPORT _Z11IIIIIIIllllv
.text:756F84B0             _Z11IIIIIIIllllv                        ; CODE XREF: JNI_OnLoad:loc_756EE6E4↑p
.text:756F84B0
.text:756F84B0             var_2C= -0x2C
.text:756F84B0             var_28= -0x28
.text:756F84B0             var_24= -0x24
.text:756F84B0             var_20= -0x20
.text:756F84B0
.text:756F84B0             ; __unwind {
.text:756F84B0 F0 43 2D E9 STMFD   SP!, {R4-R9,LR}
.text:756F84B4 C0 43 9F E5 LDR     R4, =(_GLOBAL_OFFSET_TABLE_ - 0x756F84C8)
.text:756F84B8 C0 23 9F E5 LDR     R2, =(__stack_chk_guard_ptr - 0x7572FED0)
.text:756F84BC C0 33 9F E5 LDR     R3, =(_ZN6Global10lIlIIllIIlE_ptr - 0x7572FED0)
.text:756F84C0 04 40 8F E0 ADD     R4, PC, R4                      ; _GLOBAL_OFFSET_TABLE_
.text:756F84C4 02 70 94 E7 LDR     R7, [R4,R2]
.text:756F84C8 14 D0 4D E2 SUB     SP, SP, #0x14
.text:756F84CC 00 20 97 E5 LDR     R2, [R7]
.text:756F84D0 0C 20 8D E5 STR     R2, [SP,#0x30+var_24]
.text:756F84D4 03 60 94 E7 LDR     R6, [R4,R3]
.text:756F84D8 06 00 A0 E1 MOV     R0, R6                          ; int *
.text:756F84DC 72 F2 FF EB BL      pipi
.text:756F84E0 00 00 50 E3 CMP     R0, #0
.text:756F84E4 13 00 00 BA BLT     loc_756F8538
.text:756F84E8 08 00 86 E2 ADD     R0, R6, #8                      ; int *
.text:756F84EC 6E F2 FF EB BL      pipi
.text:756F84F0 00 00 50 E3 CMP     R0, #0
.text:756F84F4 0F 00 00 BA BLT     loc_756F8538
.text:756F84F8 48 00 86 E2 ADD     R0, R6, #0x48                   ; int *
.text:756F84FC 6A F2 FF EB BL      pipi
.text:756F8500 00 00 50 E3 CMP     R0, #0
.text:756F8504 0B 00 00 BA BLT     loc_756F8538
.text:756F8508 30 00 86 E2 ADD     R0, R6, #0x30                   ; int *
.text:756F850C 66 F2 FF EB BL      pipi
.text:756F8510 00 00 50 E3 CMP     R0, #0
.text:756F8514 07 00 00 BA BLT     loc_756F8538
.text:756F8518 38 00 86 E2 ADD     R0, R6, #0x38                   ; int *
.text:756F851C 62 F2 FF EB BL      pipi
.text:756F8520 00 00 50 E3 CMP     R0, #0
.text:756F8524 03 00 00 BA BLT     loc_756F8538
.text:756F8528 40 00 86 E2 ADD     R0, R6, #0x40                   ; int *
.text:756F852C 5E F2 FF EB BL      pipi
.text:756F8530 00 00 50 E3 CMP     R0, #0
.text:756F8534 01 00 00 AA BGE     loc_756F8540
.text:756F8538
.text:756F8538             loc_756F8538                            ; CODE XREF: IIIIIIIllll(void)+34↑j
.text:756F8538                                                     ; IIIIIIIllll(void)+44↑j ...
.text:756F8538 00 00 A0 E3 MOV     R0, #0                          ; int
.text:756F853C 4E F2 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8540
.text:756F8540             loc_756F8540                            ; CODE XREF: IIIIIIIllll(void)+84↑j
.text:756F8540 01 10 A0 E3 MOV     R1, #1
.text:756F8544 04 00 A0 E3 MOV     R0, #4                          ; option
.text:756F8548 AF CB FF EB BL      prctl
.text:756F854C 72 F2 FF EB BL      getpid_0
.text:756F8550 30 33 9F E5 LDR     R3, =(_ZN6Global10lIllllIllIE_ptr - 0x7572FED0)
.text:756F8554 03 50 94 E7 LDR     R5, [R4,R3]
.text:756F8558 00 00 85 E5 STR     R0, [R5]                        ; Global::lIllllIllI
.text:756F855C 60 F2 FF EB BL      fork
.text:756F8560 01 00 70 E3 CMN     R0, #1
.text:756F8564 04 00 85 E5 STR     R0, [R5,#(dword_757309F4 - 0x757309F0)]
.text:756F8568 92 00 00 0A BEQ     loc_756F87B8
.text:756F856C
.text:756F856C             loc_756F856C                            ; CODE XREF: IIIIIIIllll(void)+314↓j
.text:756F856C 00 00 50 E3 CMP     R0, #0
.text:756F8570 34 00 00 DA BLE     loc_756F8648
.text:756F8574 00 80 A0 E3 MOV     R8, #0
.text:756F8578 01 90 A0 E3 MOV     R9, #1
.text:756F857C 08 33 9F E5 LDR     R3, =(_ZN6Global10IIlIIlIIlIE_ptr - 0x7572FED0)
.text:756F8580 10 10 8D E2 ADD     R1, SP, #0x30+var_20
.text:756F8584 38 00 96 E5 LDR     R0, [R6,#(dword_75730EBC - 0x75730E84)] ; int
.text:756F8588 03 30 94 E7 LDR     R3, [R4,R3]
.text:756F858C 04 20 A0 E3 MOV     R2, #4                          ; unsigned int
.text:756F8590 10 80 21 E5 STR     R8, [R1,#-0x10]!
.text:756F8594 00 90 C3 E5 STRB    R9, [R3]                        ; Global::IIlIIlIIlI
.text:756F8598 7B F2 FF EB BL      read
.text:756F859C EC 12 9F E5 LDR     R1, =(_ZN6Global6ThreadE_ptr - 0x7572FED0)
.text:756F85A0 EC 22 9F E5 LDR     R2, =(_Z10IlIIlllIIlPv_ptr - 0x7572FED0)
.text:756F85A4 04 30 85 E2 ADD     R3, R5, #4                      ; void *
.text:756F85A8 01 60 94 E7 LDR     R6, [R4,R1]
.text:756F85AC 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F85B0 08 10 A0 E1 MOV     R1, R8                          ; pthread_attr_t *
.text:756F85B4 06 00 A0 E1 MOV     R0, R6                          ; int *
.text:756F85B8 6D F1 FF EB BL      pthread_create_0
.text:756F85BC 08 00 50 E1 CMP     R0, R8
.text:756F85C0 80 00 00 BA BLT     loc_756F87C8
.text:756F85C4
.text:756F85C4             loc_756F85C4                            ; CODE XREF: IIIIIIIllll(void)+334↓j
.text:756F85C4 CC 32 9F E5 LDR     R3, =(_Z10IIlIlllllIPv_ptr - 0x7572FED0)
.text:756F85C8 04 00 86 E2 ADD     R0, R6, #4                      ; int *
.text:756F85CC 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F85D0 03 20 94 E7 LDR     R2, [R4,R3]                     ; void *(__cdecl *)(void *)
.text:756F85D4 09 30 A0 E3 MOV     R3, #9                          ; void *
.text:756F85D8 65 F1 FF EB BL      pthread_create_0
.text:756F85DC 00 00 50 E3 CMP     R0, #0
.text:756F85E0 6C 00 00 BA BLT     loc_756F8798
.text:756F85E4
.text:756F85E4             loc_756F85E4                            ; CODE XREF: IIIIIIIllll(void)+304↓j
.text:756F85E4 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F85E8 AC 22 9F E5 LDR     R2, =(_Z11IIIlllIIIIIPv_ptr - 0x7572FED0)
.text:756F85EC 01 30 A0 E1 MOV     R3, R1                          ; void *
.text:756F85F0 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F85F4 10 00 86 E2 ADD     R0, R6, #0x10                   ; int *
.text:756F85F8 5D F1 FF EB BL      pthread_create_0
.text:756F85FC 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F8600 98 22 9F E5 LDR     R2, =(_Z11IIIlIIlIllIPv_ptr - 0x7572FED0)
.text:756F8604 01 30 A0 E1 MOV     R3, R1                          ; void *
.text:756F8608 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F860C 04 00 8D E2 ADD     R0, SP, #0x30+var_2C            ; int *
.text:756F8610 57 F1 FF EB BL      pthread_create_0
.text:756F8614 88 32 9F E5 LDR     R3, =(_Z10IIllIIlIlIPv_ptr - 0x7572FED0)
.text:756F8618 08 00 8D E2 ADD     R0, SP, #0x30+var_28            ; int *
.text:756F861C 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F8620 03 20 94 E7 LDR     R2, [R4,R3]                     ; void *(__cdecl *)(void *)
.text:756F8624 01 30 A0 E3 MOV     R3, #1                          ; void *
.text:756F8628 51 F1 FF EB BL      pthread_create_0
.text:756F862C
.text:756F862C             loc_756F862C                            ; CODE XREF: IIIIIIIllll(void)+250↓j
.text:756F862C 0C 20 9D E5 LDR     R2, [SP,#0x30+var_24]
.text:756F8630 00 30 97 E5 LDR     R3, [R7]
.text:756F8634 01 00 A0 E3 MOV     R0, #1
.text:756F8638 03 00 52 E1 CMP     R2, R3
.text:756F863C 8D 00 00 1A BNE     loc_756F8878
.text:756F8640 14 D0 8D E2 ADD     SP, SP, #0x14
.text:756F8644 F0 83 BD E8 LDMFD   SP!, {R4-R9,PC}
.text:756F8648             ; ---------------------------------------------------------------------------
.text:756F8648
.text:756F8648             loc_756F8648                            ; CODE XREF: IIIIIIIllll(void)+C0↑j
.text:756F8648 72 CB FF EB BL      getpid
.text:756F864C 04 00 85 E5 STR     R0, [R5,#(dword_757309F4 - 0x757309F0)]
.text:756F8650 23 F2 FF EB BL      fork
.text:756F8654 04 10 85 E2 ADD     R1, R5, #4                      ; void *
.text:756F8658 08 00 85 E5 STR     R0, [R5,#(dword_757309F8 - 0x757309F0)]
.text:756F865C 04 20 A0 E3 MOV     R2, #4                          ; unsigned int
.text:756F8660 3C 00 96 E5 LDR     R0, [R6,#(dword_75730EC0 - 0x75730E84)] ; int
.text:756F8664 56 F2 FF EB BL      write_0
.text:756F8668 08 30 95 E5 LDR     R3, [R5,#(dword_757309F8 - 0x757309F0)]
.text:756F866C 01 00 73 E3 CMN     R3, #1
.text:756F8670 64 00 00 0A BEQ     loc_756F8808
.text:756F8674
.text:756F8674             loc_756F8674                            ; CODE XREF: IIIIIIIllll(void)+364↓j
.text:756F8674 00 00 53 E3 CMP     R3, #0
.text:756F8678 01 00 A0 E3 MOV     R0, #1                          ; option
.text:756F867C 09 10 A0 E3 MOV     R1, #9
.text:756F8680 1F 00 00 DA BLE     loc_756F8704
.text:756F8684 60 CB FF EB BL      prctl
.text:756F8688 00 12 9F E5 LDR     R1, =(_ZN6Global6ThreadE_ptr - 0x7572FED0)
.text:756F868C 00 22 9F E5 LDR     R2, =(_Z10IlIIlllIIlPv_ptr - 0x7572FED0)
.text:756F8690 08 30 85 E2 ADD     R3, R5, #8                      ; void *
.text:756F8694 01 60 94 E7 LDR     R6, [R4,R1]
.text:756F8698 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F869C 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F86A0 06 00 A0 E1 MOV     R0, R6                          ; int *
.text:756F86A4 32 F1 FF EB BL      pthread_create_0
.text:756F86A8 00 00 50 E3 CMP     R0, #0
.text:756F86AC 59 00 00 BA BLT     loc_756F8818
.text:756F86B0
.text:756F86B0             loc_756F86B0                            ; CODE XREF: IIIIIIIllll(void)+384↓j
.text:756F86B0 E0 31 9F E5 LDR     R3, =(_Z10IIlIlllllIPv_ptr - 0x7572FED0)
.text:756F86B4 04 00 86 E2 ADD     R0, R6, #4                      ; int *
.text:756F86B8 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F86BC 03 20 94 E7 LDR     R2, [R4,R3]                     ; void *(__cdecl *)(void *)
.text:756F86C0 01 30 A0 E3 MOV     R3, #1                          ; void *
.text:756F86C4 2A F1 FF EB BL      pthread_create_0
.text:756F86C8 00 00 50 E3 CMP     R0, #0
.text:756F86CC 45 00 00 BA BLT     loc_756F87E8
.text:756F86D0
.text:756F86D0             loc_756F86D0                            ; CODE XREF: IIIIIIIllll(void)+354↓j
.text:756F86D0 CC 31 9F E5 LDR     R3, =(_Z10IIllIIlIlIPv_ptr - 0x7572FED0)
.text:756F86D4 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F86D8 03 20 94 E7 LDR     R2, [R4,R3]                     ; void *(__cdecl *)(void *)
.text:756F86DC 02 30 A0 E3 MOV     R3, #2                          ; void *
.text:756F86E0 08 00 8D E2 ADD     R0, SP, #0x30+var_28            ; int *
.text:756F86E4
.text:756F86E4             loc_756F86E4                            ; CODE XREF: IIIIIIIllll(void)+2E4↓j
.text:756F86E4 22 F1 FF EB BL      pthread_create_0
.text:756F86E8 08 00 9D E5 LDR     R0, [SP,#0x30+var_28]           ; int
.text:756F86EC 00 10 A0 E3 MOV     R1, #0                          ; void **
.text:756F86F0 A9 F1 FF EB BL      pthread_join
.text:756F86F4 00 00 96 E5 LDR     R0, [R6]                        ; int
.text:756F86F8 00 10 A0 E3 MOV     R1, #0                          ; void **
.text:756F86FC A6 F1 FF EB BL      pthread_join
.text:756F8700 C9 FF FF EA B       loc_756F862C
.text:756F8704             ; ---------------------------------------------------------------------------
.text:756F8704
.text:756F8704             loc_756F8704                            ; CODE XREF: IIIIIIIllll(void)+1D0↑j
.text:756F8704 40 CB FF EB BL      prctl
.text:756F8708 03 F2 FF EB BL      getpid_0
.text:756F870C 05 10 A0 E1 MOV     R1, R5
.text:756F8710 04 20 A0 E3 MOV     R2, #4                          ; unsigned int
.text:756F8714 08 00 A1 E5 STR     R0, [R1,#(dword_757309F8 - 0x757309F0)]!
.text:756F8718 34 00 96 E5 LDR     R0, [R6,#(dword_75730EB8 - 0x75730E84)] ; int
.text:756F871C 28 F2 FF EB BL      write_0
.text:756F8720 68 21 9F E5 LDR     R2, =(_ZN6Global6ThreadE_ptr - 0x7572FED0)
.text:756F8724 68 31 9F E5 LDR     R3, =(_Z10IlIIlllIIlPv_ptr - 0x7572FED0)
.text:756F8728 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F872C 02 60 94 E7 LDR     R6, [R4,R2]
.text:756F8730 03 20 94 E7 LDR     R2, [R4,R3]                     ; void *(__cdecl *)(void *)
.text:756F8734 05 30 A0 E1 MOV     R3, R5                          ; void *
.text:756F8738 06 00 A0 E1 MOV     R0, R6                          ; int *
.text:756F873C 0C F1 FF EB BL      pthread_create_0
.text:756F8740 00 00 50 E3 CMP     R0, #0
.text:756F8744 43 00 00 BA BLT     loc_756F8858
.text:756F8748
.text:756F8748             loc_756F8748                            ; CODE XREF: IIIIIIIllll(void)+3C4↓j
.text:756F8748 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F874C 44 21 9F E5 LDR     R2, =(_Z10IIlIlllllIPv_ptr - 0x7572FED0)
.text:756F8750 01 30 A0 E1 MOV     R3, R1                          ; void *
.text:756F8754 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F8758 04 00 86 E2 ADD     R0, R6, #4                      ; int *
.text:756F875C 04 F1 FF EB BL      pthread_create_0
.text:756F8760 00 00 50 E3 CMP     R0, #0
.text:756F8764 33 00 00 BA BLT     loc_756F8838
.text:756F8768
.text:756F8768             loc_756F8768                            ; CODE XREF: IIIIIIIllll(void)+3A4↓j
.text:756F8768 00 10 A0 E3 MOV     R1, #0                          ; pthread_attr_t *
.text:756F876C 30 21 9F E5 LDR     R2, =(_Z10IIllIIlIlIPv_ptr - 0x7572FED0)
.text:756F8770 01 30 A0 E1 MOV     R3, R1                          ; void *
.text:756F8774 02 20 94 E7 LDR     R2, [R4,R2]                     ; void *(__cdecl *)(void *)
.text:756F8778 08 00 8D E2 ADD     R0, SP, #0x30+var_28            ; int *
.text:756F877C FC F0 FF EB BL      pthread_create_0
.text:756F8780 20 21 9F E5 LDR     R2, =(_Z11IlIIllIIlIlPv_ptr - 0x7572FED0)
.text:756F8784 05 30 A0 E1 MOV     R3, R5
.text:756F8788 02 20 94 E7 LDR     R2, [R4,R2]
.text:756F878C 06 00 A0 E1 MOV     R0, R6
.text:756F8790 00 10 A0 E3 MOV     R1, #0
.text:756F8794 D2 FF FF EA B       loc_756F86E4
.text:756F8798             ; ---------------------------------------------------------------------------
.text:756F8798
.text:756F8798             loc_756F8798                            ; CODE XREF: IIIIIIIllll(void)+130↑j
.text:756F8798 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F879C 0E 10 A0 E3 MOV     R1, #0xE                        ; int
.text:756F87A0 00 30 A0 E1 MOV     R3, R0                          ; int
.text:756F87A4 00 20 A0 E3 MOV     R2, #0                          ; char *
.text:756F87A8 DB 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F87AC 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F87B0 B1 F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F87B4 8A FF FF EA B       loc_756F85E4
.text:756F87B8             ; ---------------------------------------------------------------------------
.text:756F87B8
.text:756F87B8             loc_756F87B8                            ; CODE XREF: IIIIIIIllll(void)+B8↑j
.text:756F87B8 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F87BC AE F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F87C0 04 00 95 E5 LDR     R0, [R5,#(dword_757309F4 - 0x757309F0)]
.text:756F87C4 68 FF FF EA B       loc_756F856C
.text:756F87C8             ; ---------------------------------------------------------------------------
.text:756F87C8
.text:756F87C8             loc_756F87C8                            ; CODE XREF: IIIIIIIllll(void)+110↑j
.text:756F87C8 09 00 A0 E1 MOV     R0, R9                          ; int
.text:756F87CC 08 20 A0 E1 MOV     R2, R8                          ; char *
.text:756F87D0 0D 10 A0 E3 MOV     R1, #0xD                        ; int
.text:756F87D4 09 30 A0 E1 MOV     R3, R9                          ; int
.text:756F87D8 CF 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F87DC 09 00 A0 E1 MOV     R0, R9                          ; int
.text:756F87E0 A5 F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F87E4 76 FF FF EA B       loc_756F85C4
.text:756F87E8             ; ---------------------------------------------------------------------------
.text:756F87E8
.text:756F87E8             loc_756F87E8                            ; CODE XREF: IIIIIIIllll(void)+21C↑j
.text:756F87E8 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F87EC 0E 10 A0 E3 MOV     R1, #0xE                        ; int
.text:756F87F0 00 30 A0 E1 MOV     R3, R0                          ; int
.text:756F87F4 00 20 A0 E3 MOV     R2, #0                          ; char *
.text:756F87F8 C7 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F87FC 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F8800 9D F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8804 B1 FF FF EA B       loc_756F86D0
.text:756F8808             ; ---------------------------------------------------------------------------
.text:756F8808
.text:756F8808             loc_756F8808                            ; CODE XREF: IIIIIIIllll(void)+1C0↑j
.text:756F8808 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F880C 9A F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8810 08 30 95 E5 LDR     R3, [R5,#(dword_757309F8 - 0x757309F0)]
.text:756F8814 96 FF FF EA B       loc_756F8674
.text:756F8818             ; ---------------------------------------------------------------------------
.text:756F8818
.text:756F8818             loc_756F8818                            ; CODE XREF: IIIIIIIllll(void)+1FC↑j
.text:756F8818 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F881C 0D 10 A0 E3 MOV     R1, #0xD                        ; int
.text:756F8820 00 30 A0 E1 MOV     R3, R0                          ; int
.text:756F8824 00 20 A0 E3 MOV     R2, #0                          ; char *
.text:756F8828 BB 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F882C 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F8830 91 F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8834 9D FF FF EA B       loc_756F86B0
.text:756F8838             ; ---------------------------------------------------------------------------
.text:756F8838
.text:756F8838             loc_756F8838                            ; CODE XREF: IIIIIIIllll(void)+2B4↑j
.text:756F8838 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F883C 0E 10 A0 E3 MOV     R1, #0xE                        ; int
.text:756F8840 00 30 A0 E1 MOV     R3, R0                          ; int
.text:756F8844 00 20 A0 E3 MOV     R2, #0                          ; char *
.text:756F8848 B3 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F884C 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F8850 89 F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8854 C3 FF FF EA B       loc_756F8768
.text:756F8858             ; ---------------------------------------------------------------------------
.text:756F8858
.text:756F8858             loc_756F8858                            ; CODE XREF: IIIIIIIllll(void)+294↑j
.text:756F8858 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F885C 0D 10 A0 E3 MOV     R1, #0xD                        ; int
.text:756F8860 00 30 A0 E1 MOV     R3, R0                          ; int
.text:756F8864 00 20 A0 E3 MOV     R2, #0                          ; char *
.text:756F8868 AB 12 00 EB BL      _Z10IIIIIllIIliiPKci            ; IIIIIllIIl(int,int,char const*,int)
.text:756F886C 01 00 A0 E3 MOV     R0, #1                          ; int
.text:756F8870 81 F1 FF EB BL      _Z10llIIlIIIlli                 ; llIIlIIIll(int)
.text:756F8874 B3 FF FF EA B       loc_756F8748
2.反反调试过3进程互相调试我是通过hook ptrace直接让它返回0,多线程循环读取进程状态判断是否有调试器,我是通过hook open 函数过虑掉,还有就是直接让SDK版本小于0XD,或者直接NOP掉函数。
[Asm] 纯文本查看 复制代码
int new_ptrace(int request, int pid, int addr, int data){
        //LOGD("new_ptrace..");
        return 0;
}
int new_open(char *pathname, int oflag, mode_t mode)
{
        char* anit  = "stat";
        char* tmp = "";
        if (NULL == pathname)
        {
                goto exitret;
        }
        //LOGD("new_open..%s", pathname);
        if(strstr(pathname, anit) != NULL)
        {
                return -1;
        }
exitret:
        return old_open(pathname, oflag, mode);

}
三: compatible.so注册jni函数分析
1.获取动态jni注册函数
通过在dvmUseJNIBridge函数下好断点,来获取注册的jni函数地址,最后注册完后对照表:
注册类名com/inca/security/Core/AppGuardEngine
/data/app-lib/com.digitalsky.girlsfrontline.cn-1/libcompatible.so        757C8000        0005F000
Number                内存地址        函数名            文件偏移         签名   
第1个函数   .text:757D9AF8  IiiiIIiIii (文件偏移 11AF8)         ()I
第2个函数   .text:757DA058  iIiIIIiIiI (文件偏移 12058)         ([BI)[B
第3个函数   .text:757DC268  IiIiiIiIiI (文件偏移 14268)         (Landroid/content/Context;)V
第4个函数   .text:757D9914  IIiIiIIIiI (文件偏移 11914)         (I)V
第5个函数   .text:757D8A28  IIIIiIIIiI (文件偏移 10A28)         (J)V
2. jni函数功能分析
当JNI_OnLoad函数执行完后第一个执行的jni函数是上面注册的第3个函数, 反射获取包名与签名等。
第2个jni函数就是解密libengine.sox与libstub.sox,(assets\appguard\armeabi\)先在上面java层分析时AES解密后数据传入的就是这个函数 (文件偏移 12058)。
[Asm] 纯文本查看 复制代码
.text:757DA058             ; __unwind {
.text:757DA058 F0 43 2D E9 STMFD   SP!, {R4-R9,LR}
.text:757DA05C 02 70 A0 E1 MOV     R7, R2
.text:757DA060 00 20 90 E5 LDR     R2, [R0]
.text:757DA064 00 40 A0 E1 MOV     R4, R0
.text:757DA068 0C D0 4D E2 SUB     SP, SP, #0xC
.text:757DA06C 07 10 A0 E1 MOV     R1, R7
.text:757DA070 AC 22 92 E5 LDR     R2, [R2,#0x2AC]
.text:757DA074 03 50 A0 E1 MOV     R5, R3
.text:757DA078 32 FF 2F E1 BLX     R2
.text:757DA07C 00 30 94 E5 LDR     R3, [R4]
.text:757DA080 07 10 A0 E1 MOV     R1, R7
.text:757DA084 00 90 A0 E1 MOV     R9, R0
.text:757DA088 E0 32 93 E5 LDR     R3, [R3,#0x2E0]
.text:757DA08C 00 20 A0 E3 MOV     R2, #0
.text:757DA090 04 00 A0 E1 MOV     R0, R4
.text:757DA094 33 FF 2F E1 BLX     R3
.text:757DA098 00 80 A0 E1 MOV     R8, R0
.text:757DA09C 05 00 A0 E1 MOV     R0, R5                          ; unsigned int
.text:757DA0A0 27 1E 00 EB BL      malloc_0                        ; 分配存放空间存放解密后so数据
.text:757DA0A4 00 60 A0 E1 MOV     R6, R0
.text:757DA0A8 09 10 A0 E1 MOV     R1, R9
.text:757DA0AC 08 00 A0 E1 MOV     R0, R8
.text:757DA0B0 06 20 A0 E1 MOV     R2, R6
.text:757DA0B4 05 30 A0 E1 MOV     R3, R5
.text:757DA0B8 BA FF FF EB BL      Dec_sodata                      ; 解密so
.text:757DA0BC 00 30 94 E5 LDR     R3, [R4]
.text:757DA0C0 08 20 A0 E1 MOV     R2, R8
.text:757DA0C4 00 C3 93 E5 LDR     R12, [R3,#0x300]
.text:757DA0C8 07 10 A0 E1 MOV     R1, R7
.text:757DA0CC 04 00 A0 E1 MOV     R0, R4
.text:757DA0D0 02 30 A0 E3 MOV     R3, #2
.text:757DA0D4 3C FF 2F E1 BLX     R12
.text:757DA0D8 00 30 94 E5 LDR     R3, [R4]
.text:757DA0DC 05 10 A0 E1 MOV     R1, R5
.text:757DA0E0 04 00 A0 E1 MOV     R0, R4
.text:757DA0E4 C0 32 93 E5 LDR     R3, [R3,#0x2C0]
.text:757DA0E8 33 FF 2F E1 BLX     R3
.text:757DA0EC 00 70 A0 E1 MOV     R7, R0
.text:757DA0F0 00 20 94 E5 LDR     R2, [R4]
.text:757DA0F4 00 60 8D E5 STR     R6, [SP,#0x28+var_28]
.text:757DA0F8 05 30 A0 E1 MOV     R3, R5
.text:757DA0FC 40 C3 92 E5 LDR     R12, [R2,#0x340]
.text:757DA100 04 00 A0 E1 MOV     R0, R4
.text:757DA104 07 10 A0 E1 MOV     R1, R7
.text:757DA108 00 20 A0 E3 MOV     R2, #0
.text:757DA10C 3C FF 2F E1 BLX     R12
.text:757DA110 06 00 A0 E1 MOV     R0, R6                          ; ptr
.text:757DA114 DD F6 FF EB BL      free
.text:757DA118 07 00 A0 E1 MOV     R0, R7
.text:757DA11C 0C D0 8D E2 ADD     SP, SP, #0xC
.text:757DA120 F0 83 BD E8 LDMFD   SP!, {R4-R9,PC}

解密完后R5是大小,R6基址,将其dump出来,如下图所示:

8

8

[Asm] 纯文本查看 复制代码
static main(void)
    {
        auto fp, begin, end, dexbyte;
        fp = fopen("d:\\libstub.so", "wb"); //打开或创建一个文件
        begin =  R6;              //so基址
        end = begin + R5;            //so基址 + so文件大小
        for ( dexbyte = begin; dexbyte < end;dexbyte ++ )
        {
            fputc(Byte(dexbyte), fp);     //按字节将其dump到本地文件中
        }
    } 

libstub.sox解密后将最终的明文写到/data/data/包名/files/libstub.so目录下,后然加载,接下来分析libstub.so。
四: stub.so反调试与反反调试
1.反调试在JNI_onLoad中读取进程状态,前面通过hook open函数己过了反调试。
五: stub.so注册jni函数分析
1.注册jni
通过在dvmUseJNIBridge函数下好断点,来获取注册的jni函数地址,最后注册完后对照表:
注册类名com/inca/security/Core/UnsafeDexLoader
Number                内存地址        函数名            文件偏移         签名   
第1个函数   .text:75C80704  IlIIIIIIII (文件偏移 12704)         (Ljava/lang/String;Ljava/lang/String;I)I
第2个函数   .text:75C808C4  IIIIIIIIIl (文件偏移 128C4)         ([B)I
第3个函数   .text:75C80A7C  IIIIIIIIlI (文件偏移 12A7C)         (Ljava/lang/String;Ljava/lang/ClassLoader;I)Ljava/lang/Class;
第4个函数   .text:75C80C3C  IIIIIIIIll (文件偏移 12C3C)         (I)[Ljava/lang/String;
第5个函数   .text:75C80DF4  IIIIIIIlII (文件偏移 12DF4)         (I)V


//
注册类名com/inca/security/Core/AppGuardEngine
Number                内存地址        函数名            文件偏移         签名   
第1个函数   .text:75C81168  IlIIIIIIII (文件偏移 13168)         (Landroid/content/Context;Ljava/lang/String;[B)I
第2个函数   .text:75C814AC  IIIIIIIllI (文件偏移 134AC)         ()V
第3个函数   .text:75C81618  IIIIIIIlll (文件偏移 13618)         (I[B[B)I
第4个函数   .text:75C81724  IIIIIIlIII (文件偏移 13724)         (I[B[B)I
第5个函数   .text:75C817CC  IIIIIIIlII (文件偏移 137CC)         (I[B[B)I
第6个函数   .text:75C8186C  IllIIIlIII (文件偏移 1386C)         (I)I
第7个函数   .text:75C818AC  IIIIIIlIlI (文件偏移 138AC)         (I)I
第8个函数   .text:75C81810  llIIIIlIIl (文件偏移 13810)         (I[B)I
第9个函数   .text:75C81844  IlIIIIlllI (文件偏移 13844)         (Z)V
第10个函数   .text:75C81D10  lllIIIlllI (文件偏移 13D10)         (Landroid/content/Context;)V

注册类名com/inca/security/AppGuard/TestCase
第1个函数   .text:75C82608  IIIIIIlIll (文件偏移 14608)         (Landroid/content/Context;Z)Z
第2个函数   .text:75C8267C  IIIIIIllII (文件偏移 1467C)         (Landroid/content/Context;)Z
第3个函数   .text:75C826F0  IIIIIIllIl (文件偏移 146F0)         (Landroid/content/Context;)Z
第4个函数   .text:75C82764  IIIIIIlllI (文件偏移 14764)         (Landroid/content/Context;)Z
2.在com/inca/security/Core/AppGuardEngine类中第10个函数jni函数中hook mono函数 (文件偏移 18D04)
[Asm] 纯文本查看 复制代码
.text:75C86D04             EXPORT hook_mono_func
.text:75C86D04             hook_mono_func                          ; CODE XREF: Hook_Thread+4↑p
.text:75C86D04
.text:75C86D04             var_280= -0x280
.text:75C86D04             var_27C= -0x27C
.text:75C86D04             var_278= -0x278
.text:75C86D04             format= -0x274
.text:75C86D04             var_26C= -0x26C
.text:75C86D04             var_24C= -0x24C
.text:75C86D04             s= -0x22C
.text:75C86D04             var_12C= -0x12C
.text:75C86D04             var_2C= -0x2C
.text:75C86D04
.text:75C86D04             ; __unwind { // 75C9B220
.text:75C86D04 F0 4F 2D E9 STMFD   SP!, {R4-R11,LR}
.text:75C86D08 08 56 9F E5 LDR     R5, =(_GLOBAL_OFFSET_TABLE_ - 0x75C86D1C)
.text:75C86D0C 08 36 9F E5 LDR     R3, =(__stack_chk_guard_ptr - 0x75CBEEC0)
.text:75C86D10 97 DF 4D E2 SUB     SP, SP, #0x25C
.text:75C86D14 05 50 8F E0 ADD     R5, PC, R5                      ; _GLOBAL_OFFSET_TABLE_
.text:75C86D18 03 A0 95 E7 LDR     R10, [R5,R3]
.text:75C86D1C 54 80 8D E2 ADD     R8, SP, #0x280+s
.text:75C86D20 00 10 A0 E3 MOV     R1, #0                          ; c
.text:75C86D24 00 30 9A E5 LDR     R3, [R10]
.text:75C86D28 FF 20 A0 E3 MOV     R2, #0xFF                       ; n
.text:75C86D2C 08 00 A0 E1 MOV     R0, R8                          ; s
.text:75C86D30 54 32 8D E5 STR     R3, [SP,#0x280+var_2C]
.text:75C86D34 29 D7 FF EB BL      memset
.text:75C86D38 E0 15 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86D4C)
.text:75C86D3C 34 40 8D E2 ADD     R4, SP, #0x280+var_24C
.text:75C86D40 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86D44 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86D48 F0 10 81 E2 ADD     R1, R1, #0xF0                   ; char *
.text:75C86D4C 83 F8 FF EB BL      DecString
.text:75C86D50 04 00 A0 E1 MOV     R0, R4
.text:75C86D54 67 F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86D58 00 10 A0 E3 MOV     R1, #0                          ; mode
.text:75C86D5C 13 D7 FF EB BL      dlopen
.text:75C86D60 00 60 A0 E1 MOV     R6, R0
.text:75C86D64 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86D68 40 F7 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86D6C B0 15 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86D80)
.text:75C86D70 00 00 56 E3 CMP     R6, #0
.text:75C86D74 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86D78 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86D7C 05 1D 81 E2 ADD     R1, R1, #0x140                  ; char *
.text:75C86D80 00 60 E0 03 MOVEQ   R6, #0xFFFFFFFF
.text:75C86D84 75 F8 FF EB BL      DecString
.text:75C86D88 04 00 A0 E1 MOV     R0, R4
.text:75C86D8C 59 F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86D90 00 10 A0 E1 MOV     R1, R0                          ; name
.text:75C86D94 06 00 A0 E1 MOV     R0, R6                          ; handle
.text:75C86D98 F8 D6 FF EB BL      dlsym
.text:75C86D9C 00 60 A0 E1 MOV     R6, R0
.text:75C86DA0 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86DA4 31 F7 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86DA8 00 00 56 E3 CMP     R6, #0
.text:75C86DAC 01 00 00 0A BEQ     loc_75C86DB8
.text:75C86DB0 36 FF 2F E1 BLX     R6
.text:75C86DB4 00 60 A0 E1 MOV     R6, R0
.text:75C86DB8
.text:75C86DB8             loc_75C86DB8                            ; CODE XREF: hook_mono_func+A8↑j
.text:75C86DB8 06 00 A0 E1 MOV     R0, R6                          ; unsigned int
.text:75C86DBC 58 09 00 EB BL      _Z11llllIIlllIlj                ; libil2cpp.so没有
.text:75C86DC0 60 15 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86DD4)
.text:75C86DC4 14 70 8D E2 ADD     R7, SP, #0x280+var_26C
.text:75C86DC8 07 00 A0 E1 MOV     R0, R7                          ; this
.text:75C86DCC 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86DD0 19 1E 81 E2 ADD     R1, R1, #0x190                  ; char *
.text:75C86DD4 61 F8 FF EB BL      DecString
.text:75C86DD8 07 00 A0 E1 MOV     R0, R7
.text:75C86DDC 45 F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86DE0 44 15 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86DF0)
.text:75C86DE4 00 90 A0 E1 MOV     R9, R0
.text:75C86DE8 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86DEC 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86DF0 1E 1E 81 E2 ADD     R1, R1, #0x1E0                  ; char *
.text:75C86DF4 59 F8 FF EB BL      DecString
.text:75C86DF8 04 00 A0 E1 MOV     R0, R4
.text:75C86DFC 3D F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86E00 28 25 9F E5 LDR     R2, =(_ZN6Global10llIllllIlIE_ptr - 0x75CBEEC0)
.text:75C86E04 00 30 A0 E1 MOV     R3, R0
.text:75C86E08 02 20 95 E7 LDR     R2, [R5,R2]
.text:75C86E0C 09 10 A0 E1 MOV     R1, R9                          ; format
.text:75C86E10 08 00 A0 E1 MOV     R0, R8                          ; s
.text:75C86E14 00 20 8D E5 STR     R2, [SP,#0x280+var_280]
.text:75C86E18 F9 D6 FF EB BL      sprintf
.text:75C86E1C 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86E20 12 F7 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86E24 07 00 A0 E1 MOV     R0, R7                          ; this
.text:75C86E28 10 F7 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86E2C 08 00 A0 E1 MOV     R0, R8                          ; file
.text:75C86E30 00 10 A0 E3 MOV     R1, #0                          ; mode
.text:75C86E34 DD D6 FF EB BL      dlopen                          ; 打开libmono.so
.text:75C86E38 00 90 50 E2 SUBS    R9, R0, #0
.text:75C86E3C 5B 00 00 0A BEQ     loc_75C86FB0
.text:75C86E40 EC 14 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86E50)
.text:75C86E44 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86E48 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86E4C 23 1E 81 E2 ADD     R1, R1, #0x230                  ; char *
.text:75C86E50 42 F8 FF EB BL      DecString
.text:75C86E54 04 00 A0 E1 MOV     R0, R4
.text:75C86E58 26 F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86E5C 00 10 A0 E1 MOV     R1, R0                          ; name
.text:75C86E60 09 00 A0 E1 MOV     R0, R9                          ; handle
.text:75C86E64 C5 D6 FF EB BL      dlsym                           ; 获取mono_assembly_load_from_full地址
.text:75C86E68 C8 34 9F E5 LDR     R3, =(IIlIlIIllll_ptr - 0x75CBEEC0)
.text:75C86E6C C8 24 9F E5 LDR     R2, =(dword_75CC0068 - 0x75C86E7C)
.text:75C86E70 03 30 95 E7 LDR     R3, [R5,R3]
.text:75C86E74 02 20 8F E0 ADD     R2, PC, R2                      ; dword_75CC0068
.text:75C86E78 10 20 82 E2 ADD     R2, R2, #0x10                   ; void **
.text:75C86E7C 03 10 A0 E1 MOV     R1, R3                          ; void *
.text:75C86E80 08 30 8D E5 STR     R3, [SP,#0x280+var_278]
.text:75C86E84 75 F8 FF EB BL      hook                            ; hook mono_assembly_load_from_full
.text:75C86E88 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86E8C F7 F6 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86E90 A8 14 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86EA0)
.text:75C86E94 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86E98 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86E9C 0A 1D 81 E2 ADD     R1, R1, #0x280                  ; char *
.text:75C86EA0 2E F8 FF EB BL      DecString
.text:75C86EA4 04 00 A0 E1 MOV     R0, R4
.text:75C86EA8 12 F7 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86EAC 00 10 A0 E1 MOV     R1, R0                          ; name
.text:75C86EB0 09 00 A0 E1 MOV     R0, R9                          ; handle
.text:75C86EB4 B1 D6 FF EB BL      dlsym                           ; 获取mono_image_open_from_data_with_name地址
.text:75C86EB8 84 34 9F E5 LDR     R3, =(lIlIllIllIl_ptr - 0x75CBEEC0)
.text:75C86EBC 84 24 9F E5 LDR     R2, =(dword_75CC0068 - 0x75C86ECC)
.text:75C86EC0 03 30 95 E7 LDR     R3, [R5,R3]
.text:75C86EC4 02 20 8F E0 ADD     R2, PC, R2                      ; dword_75CC0068
.text:75C86EC8 08 20 82 E2 ADD     R2, R2, #8                      ; void **
.text:75C86ECC 03 10 A0 E1 MOV     R1, R3                          ; void *
.text:75C86ED0 04 30 8D E5 STR     R3, [SP,#0x280+var_27C]
.text:75C86ED4 61 F8 FF EB BL      hook                            ; hook mono_image_open_from_data_with_name
.text:75C86ED8 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86EDC E3 F6 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86EE0 64 34 9F E5 LDR     R3, =(dword_75CC0068 - 0x75C86EEC)
.text:75C86EE4 03 30 8F E0 ADD     R3, PC, R3                      ; dword_75CC0068
.text:75C86EE8 10 20 93 E5 LDR     R2, [R3,#(dword_75CC0078 - 0x75CC0068)]
.text:75C86EEC 00 00 52 E3 CMP     R2, #0
.text:75C86EF0 34 00 00 0A BEQ     loc_75C86FC8
.text:75C86EF4 08 30 93 E5 LDR     R3, [R3,#(dword_75CC0070 - 0x75CC0068)]
.text:75C86EF8 00 00 53 E3 CMP     R3, #0
.text:75C86EFC 31 00 00 0A BEQ     loc_75C86FC8
.text:75C86F00
.text:75C86F00             loc_75C86F00                            ; CODE XREF: hook_mono_func+364↓j
.text:75C86F00                                                     ; hook_mono_func+38C↓j ...
.text:75C86F00 17 00 56 E3 CMP     R6, #0x17
.text:75C86F04 04 00 00 9A BLS     loc_75C86F1C
.text:75C86F08 40 34 9F E5 LDR     R3, =(_ZN6Global10lIlllIIllIE_ptr - 0x75CBEEC0)
.text:75C86F0C 03 30 95 E7 LDR     R3, [R5,R3]
.text:75C86F10 00 30 93 E5 LDR     R3, [R3]                        ; Global::lIlllIIllI
.text:75C86F14 17 00 53 E3 CMP     R3, #0x17
.text:75C86F18 6E 00 00 CA BGT     loc_75C870D8
.text:75C86F1C
.text:75C86F1C             loc_75C86F1C                            ; CODE XREF: hook_mono_func+200↑j
.text:75C86F1C 30 14 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86F2C)
.text:75C86F20 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86F24 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86F28 32 1E 81 E2 ADD     R1, R1, #0x320                  ; char *
.text:75C86F2C 0B F8 FF EB BL      DecString
.text:75C86F30 04 00 A0 E1 MOV     R0, R4
.text:75C86F34 EF F6 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86F38 18 34 9F E5 LDR     R3, =(dword_75CC0068 - 0x75C86F4C)
.text:75C86F3C 18 24 9F E5 LDR     R2, =(lIIIlIIlII_ptr - 0x75CBEEC0)
.text:75C86F40 00 10 A0 E1 MOV     R1, R0                          ; char *
.text:75C86F44 03 30 8F E0 ADD     R3, PC, R3                      ; dword_75CC0068
.text:75C86F48 02 20 95 E7 LDR     R2, [R5,R2]                     ; void *
.text:75C86F4C 04 30 83 E2 ADD     R3, R3, #4                      ; void **
.text:75C86F50 09 00 A0 E1 MOV     R0, R9                          ; void *
.text:75C86F54 99 F8 FF EB BL      IAT_HOOK                        ; hook memcpy
.text:75C86F58 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86F5C C3 F6 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86F60 F8 13 9F E5 LDR     R1, =(unk_75CB8B70 - 0x75C86F70)
.text:75C86F64 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86F68 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CB8B70
.text:75C86F6C 37 1E 81 E2 ADD     R1, R1, #0x370                  ; char *
.text:75C86F70 FA F7 FF EB BL      DecString
.text:75C86F74 04 00 A0 E1 MOV     R0, R4
.text:75C86F78 DE F6 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C86F7C E0 33 9F E5 LDR     R3, =(IlIIIlIIlI_ptr - 0x75CBEEC0)
.text:75C86F80 00 10 A0 E1 MOV     R1, R0                          ; char *
.text:75C86F84 03 20 95 E7 LDR     R2, [R5,R3]                     ; void *
.text:75C86F88 D8 33 9F E5 LDR     R3, =(dword_75CC0068 - 0x75C86F98)
.text:75C86F8C 09 00 A0 E1 MOV     R0, R9                          ; void *
.text:75C86F90 03 30 8F E0 ADD     R3, PC, R3                      ; dword_75CC0068 ; void **
.text:75C86F94 89 F8 FF EB BL      IAT_HOOK                        ; hook mmap
.text:75C86F98
.text:75C86F98             loc_75C86F98                            ; CODE XREF: hook_mono_func+4C0↓j
.text:75C86F98 04 00 A0 E1 MOV     R0, R4                          ; this
.text:75C86F9C B3 F6 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C86FA0
.text:75C86FA0             loc_75C86FA0                            ; CODE XREF: hook_mono_func+484↓j
.text:75C86FA0 01 20 A0 E3 MOV     R2, #1
.text:75C86FA4 C0 33 9F E5 LDR     R3, =(_ZN6Global10lllllllIIIE_ptr - 0x75CBEEC0)
.text:75C86FA8 03 30 95 E7 LDR     R3, [R5,R3]
.text:75C86FAC 00 20 C3 E5 STRB    R2, [R3]                        ; Global::lllllllIII
.text:75C86FB0
.text:75C86FB0             loc_75C86FB0                            ; CODE XREF: hook_mono_func+138↑j
.text:75C86FB0 54 22 9D E5 LDR     R2, [SP,#0x280+var_2C]
.text:75C86FB4 00 30 9A E5 LDR     R3, [R10]
.text:75C86FB8 03 00 52 E1 CMP     R2, R3
.text:75C86FBC A4 00 00 1A BNE     loc_75C87254
.text:75C86FC0 97 DF 8D E2 ADD     SP, SP, #0x25C
.text:75C86FC4 F0 8F BD E8 LDMFD   SP!, {R4-R11,PC}

六: Assembly-CSharp.dll解密分析
1. 在mono的hook函数中解密Assembly-CSharp.dll,代码如下:
[Asm] 纯文本查看 复制代码
.text:75C7A138             EXPORT hook_mono_image_open_from_data_with_name
.text:75C7A138             hook_mono_image_open_from_data_with_name
.text:75C7A138                                                     ; DATA XREF: .got:lIlIllIllIl_ptr↓o
.text:75C7A138
.text:75C7A138             var_4F0= -0x4F0
.text:75C7A138             var_4EC= -0x4EC
.text:75C7A138             var_4E8= -0x4E8
.text:75C7A138             var_4E4= -0x4E4
.text:75C7A138             var_4DC= -0x4DC
.text:75C7A138             var_4D8= -0x4D8
.text:75C7A138             var_4D4= -0x4D4
.text:75C7A138             var_4D0= -0x4D0
.text:75C7A138             var_4CC= -0x4CC
.text:75C7A138             var_4C8= -0x4C8
.text:75C7A138             var_4C4= -0x4C4
.text:75C7A138             var_60= -0x60
.text:75C7A138             var_54= -0x54
.text:75C7A138             var_50= -0x50
.text:75C7A138             var_4C= -0x4C
.text:75C7A138             var_48= -0x48
.text:75C7A138             var_44= -0x44
.text:75C7A138             var_43= -0x43
.text:75C7A138             var_42= -0x42
.text:75C7A138             var_41= -0x41
.text:75C7A138             var_40= -0x40
.text:75C7A138             var_3F= -0x3F
.text:75C7A138             var_3E= -0x3E
.text:75C7A138             var_3D= -0x3D
.text:75C7A138             var_2C= -0x2C
.text:75C7A138             arg_0=  0
.text:75C7A138             arg_4=  4
.text:75C7A138
.text:75C7A138             ; __unwind { // 75C8F220
.text:75C7A138 F0 4F 2D E9 STMFD   SP!, {R4-R11,LR}
.text:75C7A13C 13 DD 4D E2 SUB     SP, SP, #0x4C0
.text:75C7A140 0C D0 4D E2 SUB     SP, SP, #0xC
.text:75C7A144 F4 74 9D E5 LDR     R7, [SP,#0x4F0+arg_4]
.text:75C7A148 54 84 9F E5 LDR     R8, =(_GLOBAL_OFFSET_TABLE_ - 0x75C7A168)
.text:75C7A14C 54 C4 9F E5 LDR     R12, =(__stack_chk_guard_ptr - 0x75CB2EC0)
.text:75C7A150 00 60 97 E2 MOVS    R6, R7
.text:75C7A154 01 60 A0 13 MOVNE   R6, #1
.text:75C7A158 00 00 57 E3 CMP     R7, #0
.text:75C7A15C FF 00 51 13 CMPNE   R1, #0xFF
.text:75C7A160 08 80 8F E0 ADD     R8, PC, R8                      ; _GLOBAL_OFFSET_TABLE_
.text:75C7A164 0C C0 98 E7 LDR     R12, [R8,R12]
.text:75C7A168 01 50 A0 E1 MOV     R5, R1
.text:75C7A16C 08 C0 8D E5 STR     R12, [SP,#0x4F0+var_4E8]
.text:75C7A170 00 C0 9C E5 LDR     R12, [R12]
.text:75C7A174 00 40 A0 E1 MOV     R4, R0
.text:75C7A178 0C 20 8D E5 STR     R2, [SP,#0x4F0+var_4E4]
.text:75C7A17C C4 C4 8D E5 STR     R12, [SP,#0x4F0+var_2C]
.text:75C7A180 DE 00 00 9A BLS     loc_75C7A500
.text:75C7A184 20 14 9F E5 LDR     R1, =(unk_75CACB70 - 0x75C7A198)
.text:75C7A188 2C 60 8D E2 ADD     R6, SP, #0x4F0+var_4C4
.text:75C7A18C 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A190 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CACB70 ; char *
.text:75C7A194 03 90 A0 E1 MOV     R9, R3
.text:75C7A198 70 FB FF EB BL      DecString
.text:75C7A19C 06 00 A0 E1 MOV     R0, R6
.text:75C7A1A0 54 FA FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C7A1A4 00 10 A0 E1 MOV     R1, R0                          ; needle
.text:75C7A1A8 07 00 A0 E1 MOV     R0, R7                          ; haystack
.text:75C7A1AC 29 DA FF EB BL      strstr                          ; 判断是否加载Assembly-CSharp.dll
.text:75C7A1B0 00 A0 A0 E1 MOV     R10, R0
.text:75C7A1B4 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A1B8 2C FA FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C7A1BC 00 00 5A E3 CMP     R10, #0
.text:75C7A1C0 A5 00 00 0A BEQ     loc_75C7A45C
.text:75C7A1C4 E4 A3 9F E5 LDR     R10, =unk_49F54EEB              ; 准备解密
.text:75C7A1C8 E4 E3 9F E5 LDR     LR, =0x8B3BE89F
.text:75C7A1CC E4 C3 9F E5 LDR     R12, =0xC6EF3720
.text:75C7A1D0 0A 30 A0 E1 MOV     R3, R10
.text:75C7A1D4
.text:75C7A1D4             loc_75C7A1D4                            ; CODE XREF: hook_mono_image_open_from_data_with_name+104↓j
.text:75C7A1D4 E0 13 9F E5 LDR     R1, =0x815AA0CD
.text:75C7A1D8 E0 23 9F E5 LDR     R2, =0xA1C489F7
.text:75C7A1DC 03 B2 A0 E1 MOV     R11, R3,LSL#4
.text:75C7A1E0 A3 02 A0 E1 MOV     R0, R3,LSR#5
.text:75C7A1E4 01 10 8B E0 ADD     R1, R11, R1
.text:75C7A1E8 02 20 80 E0 ADD     R2, R0, R2
.text:75C7A1EC 03 30 8C E0 ADD     R3, R12, R3
.text:75C7A1F0 01 20 22 E0 EOR     R2, R2, R1
.text:75C7A1F4 03 20 22 E0 EOR     R2, R2, R3
.text:75C7A1F8 C4 13 9F E5 LDR     R1, =0x95A8882C
.text:75C7A1FC C4 33 9F E5 LDR     R3, =0x9D2CC113
.text:75C7A200 0E E0 62 E0 RSB     LR, R2, LR
.text:75C7A204 0C 20 8E E0 ADD     R2, LR, R12
.text:75C7A208 0E B2 A0 E1 MOV     R11, LR,LSL#4
.text:75C7A20C AE 02 A0 E1 MOV     R0, LR,LSR#5
.text:75C7A210 61 C4 8C E2 ADD     R12, R12, #0x61000000
.text:75C7A214 01 10 8B E0 ADD     R1, R11, R1
.text:75C7A218 03 30 80 E0 ADD     R3, R0, R3
.text:75C7A21C 32 C7 8C E2 ADD     R12, R12, #0xC80000
.text:75C7A220 01 30 23 E0 EOR     R3, R3, R1
.text:75C7A224 86 CC 8C E2 ADD     R12, R12, #0x8600
.text:75C7A228 02 30 23 E0 EOR     R3, R3, R2
.text:75C7A22C 47 C0 8C E2 ADD     R12, R12, #0x47
.text:75C7A230 0A 30 63 E0 RSB     R3, R3, R10
.text:75C7A234 00 00 5C E3 CMP     R12, #0
.text:75C7A238 03 A0 A0 E1 MOV     R10, R3
.text:75C7A23C E4 FF FF 1A BNE     loc_75C7A1D4
.text:75C7A240 00 10 D4 E5 LDRB    R1, [R4]
.text:75C7A244 FF 20 03 E2 AND     R2, R3, #0xFF
.text:75C7A248 28 E0 8D E5 STR     LR, [SP,#0x4F0+var_4C8]
.text:75C7A24C 02 00 51 E1 CMP     R1, R2
.text:75C7A250 24 30 8D E5 STR     R3, [SP,#0x4F0+var_4CC]
.text:75C7A254 80 00 00 1A BNE     loc_75C7A45C
.text:75C7A258 01 20 D4 E5 LDRB    R2, [R4,#1]
.text:75C7A25C 25 30 DD E5 LDRB    R3, [SP,#0x4F0+var_4CC+1]
.text:75C7A260 03 00 52 E1 CMP     R2, R3
.text:75C7A264 7C 00 00 1A BNE     loc_75C7A45C
.text:75C7A268 02 20 D4 E5 LDRB    R2, [R4,#2]
.text:75C7A26C 26 30 DD E5 LDRB    R3, [SP,#0x4F0+var_4CC+2]
.text:75C7A270 03 00 52 E1 CMP     R2, R3
.text:75C7A274 78 00 00 1A BNE     loc_75C7A45C
.text:75C7A278 03 20 D4 E5 LDRB    R2, [R4,#3]
.text:75C7A27C 27 30 DD E5 LDRB    R3, [SP,#0x4F0+var_4CC+3]
.text:75C7A280 03 00 52 E1 CMP     R2, R3
.text:75C7A284 74 00 00 1A BNE     loc_75C7A45C
.text:75C7A288 04 20 D4 E5 LDRB    R2, [R4,#4]
.text:75C7A28C 28 30 DD E5 LDRB    R3, [SP,#0x4F0+var_4C8]
.text:75C7A290 03 00 52 E1 CMP     R2, R3
.text:75C7A294 70 00 00 1A BNE     loc_75C7A45C
.text:75C7A298 2C 33 9F E5 LDR     R3, =(_ZN6Global10IIlllllllIE_ptr - 0x75CB2EC0)
.text:75C7A29C 9C C4 8D E5 STR     R12, [SP,#0x4F0+var_54]
.text:75C7A2A0 A0 C4 8D E5 STR     R12, [SP,#0x4F0+var_50]
.text:75C7A2A4 03 30 98 E7 LDR     R3, [R8,R3]
.text:75C7A2A8 00 30 D3 E5 LDRB    R3, [R3]                        ; Global::IIlllllllI
.text:75C7A2AC 00 00 53 E3 CMP     R3, #0
.text:75C7A2B0 A7 00 00 0A BEQ     loc_75C7A554
.text:75C7A2B4 14 33 9F E5 LDR     R3, =(_ZN6Global10IllIlIIllIE_ptr - 0x75CB2EC0)
.text:75C7A2B8 03 30 98 E7 LDR     R3, [R8,R3]
.text:75C7A2BC 00 30 93 E5 LDR     R3, [R3]                        ; Global::IllIlIIllI
.text:75C7A2C0 00 A0 D3 E5 LDRB    R10, [R3]
.text:75C7A2C4 01 80 D3 E5 LDRB    R8, [R3,#1]
.text:75C7A2C8 02 E0 D3 E5 LDRB    LR, [R3,#2]
.text:75C7A2CC 03 C0 D3 E5 LDRB    R12, [R3,#3]
.text:75C7A2D0 04 00 D3 E5 LDRB    R0, [R3,#4]
.text:75C7A2D4 05 10 D3 E5 LDRB    R1, [R3,#5]
.text:75C7A2D8 06 20 D3 E5 LDRB    R2, [R3,#6]
.text:75C7A2DC 07 30 D3 E5 LDRB    R3, [R3,#7]
.text:75C7A2E0 9C A4 CD E5 STRB    R10, [SP,#0x4F0+var_54]
.text:75C7A2E4 9D 84 CD E5 STRB    R8, [SP,#0x4F0+var_54+1]
.text:75C7A2E8 9E E4 CD E5 STRB    LR, [SP,#0x4F0+var_54+2]
.text:75C7A2EC 9F C4 CD E5 STRB    R12, [SP,#0x4F0+var_54+3]
.text:75C7A2F0 A0 04 CD E5 STRB    R0, [SP,#0x4F0+var_50]
.text:75C7A2F4 A1 14 CD E5 STRB    R1, [SP,#0x4F0+var_50+1]
.text:75C7A2F8 A2 24 CD E5 STRB    R2, [SP,#0x4F0+var_50+2]
.text:75C7A2FC A3 34 CD E5 STRB    R3, [SP,#0x4F0+var_50+3]
.text:75C7A300
.text:75C7A300             loc_75C7A300                            ; CODE XREF: hook_mono_image_open_from_data_with_name+440↓j
.text:75C7A300 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A304 2E F1 FF EB BL      _ZN10llIlIlIlllC2Ev             ; llIlIlIlll::llIlIlIlll(void)
.text:75C7A308 10 30 A0 E3 MOV     R3, #0x10                       ; int
.text:75C7A30C 05 C0 D4 E5 LDRB    R12, [R4,#5]
.text:75C7A310 9C E4 9D E5 LDR     LR, [SP,#0x4F0+var_54]
.text:75C7A314 08 10 D4 E5 LDRB    R1, [R4,#8]
.text:75C7A318 09 20 D4 E5 LDRB    R2, [R4,#9]
.text:75C7A31C 07 00 D4 E5 LDRB    R0, [R4,#7]
.text:75C7A320 06 A0 D4 E5 LDRB    R10, [R4,#6]
.text:75C7A324 00 30 8D E5 STR     R3, [SP,#0x4F0+var_4F0]         ; int
.text:75C7A328 A0 B4 9D E5 LDR     R11, [SP,#0x4F0+var_50]
.text:75C7A32C A4 E4 8D E5 STR     LR, [SP,#0x4F0+var_4C]
.text:75C7A330 0A 80 D4 E5 LDRB    R8, [R4,#0xA]
.text:75C7A334 0B E0 D4 E5 LDRB    LR, [R4,#0xB]
.text:75C7A338 AC C4 CD E5 STRB    R12, [SP,#0x4F0+var_44]
.text:75C7A33C 0C C0 D4 E5 LDRB    R12, [R4,#0xC]
.text:75C7A340 AF 14 CD E5 STRB    R1, [SP,#0x4F0+var_41]
.text:75C7A344 B0 24 CD E5 STRB    R2, [SP,#0x4F0+var_40]
.text:75C7A348 4A 1E 8D E2 ADD     R1, SP, #0x4F0+var_50
.text:75C7A34C 4B 2E 8D E2 ADD     R2, SP, #0x4F0+var_40
.text:75C7A350 AE 04 CD E5 STRB    R0, [SP,#0x4F0+var_42]
.text:75C7A354 04 10 81 E2 ADD     R1, R1, #4                      ; char *
.text:75C7A358 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A35C 04 20 82 E2 ADD     R2, R2, #4                      ; char *
.text:75C7A360 A8 B4 8D E5 STR     R11, [SP,#0x4F0+var_48]
.text:75C7A364 AD A4 CD E5 STRB    R10, [SP,#0x4F0+var_43]
.text:75C7A368 B1 84 CD E5 STRB    R8, [SP,#0x4F0+var_3F]
.text:75C7A36C B2 E4 CD E5 STRB    LR, [SP,#0x4F0+var_3E]
.text:75C7A370 B3 C4 CD E5 STRB    R12, [SP,#0x4F0+var_3D]
.text:75C7A374 16 F1 FF EB BL      _ZN10llIlIlIlll10lIIIIlIlIIEPKcS1_ii ; llIlIlIlll::lIIIIlIlII(char const*,char const*,int,int)
.text:75C7A378 0F 20 D4 E5 LDRB    R2, [R4,#0xF]
.text:75C7A37C 10 30 D4 E5 LDRB    R3, [R4,#0x10]
.text:75C7A380 0D 00 D4 E5 LDRB    R0, [R4,#0xD]
.text:75C7A384 0E 10 D4 E5 LDRB    R1, [R4,#0xE]
.text:75C7A388 16 20 CD E5 STRB    R2, [SP,#0x4F0+var_4DC+2]
.text:75C7A38C 17 30 CD E5 STRB    R3, [SP,#0x4F0+var_4DC+3]
.text:75C7A390 11 20 D4 E5 LDRB    R2, [R4,#0x11]
.text:75C7A394 12 30 D4 E5 LDRB    R3, [R4,#0x12]
.text:75C7A398 14 00 CD E5 STRB    R0, [SP,#0x4F0+var_4DC]
.text:75C7A39C 15 10 CD E5 STRB    R1, [SP,#0x4F0+var_4DC+1]
.text:75C7A3A0 14 A0 9D E5 LDR     R10, [SP,#0x4F0+var_4DC]
.text:75C7A3A4 13 80 D4 E5 LDRB    R8, [R4,#0x13]
.text:75C7A3A8 14 E0 D4 E5 LDRB    LR, [R4,#0x14]
.text:75C7A3AC 15 C0 D4 E5 LDRB    R12, [R4,#0x15]
.text:75C7A3B0 16 10 D4 E5 LDRB    R1, [R4,#0x16]
.text:75C7A3B4 18 20 CD E5 STRB    R2, [SP,#0x4F0+var_4D8]
.text:75C7A3B8 19 30 CD E5 STRB    R3, [SP,#0x4F0+var_4D8+1]
.text:75C7A3BC 17 20 D4 E5 LDRB    R2, [R4,#0x17]
.text:75C7A3C0 18 30 D4 E5 LDRB    R3, [R4,#0x18]
.text:75C7A3C4 0A 00 A0 E1 MOV     R0, R10                         ; unsigned int
.text:75C7A3C8 1A 80 CD E5 STRB    R8, [SP,#0x4F0+var_4D8+2]
.text:75C7A3CC 1B E0 CD E5 STRB    LR, [SP,#0x4F0+var_4D8+3]
.text:75C7A3D0 1C C0 CD E5 STRB    R12, [SP,#0x4F0+var_4D4]
.text:75C7A3D4 1D 10 CD E5 STRB    R1, [SP,#0x4F0+var_4D4+1]
.text:75C7A3D8 1E 20 CD E5 STRB    R2, [SP,#0x4F0+var_4D4+2]
.text:75C7A3DC 1F 30 CD E5 STRB    R3, [SP,#0x4F0+var_4D4+3]
.text:75C7A3E0 9C E0 FF EB BL      malloc_0
.text:75C7A3E4 00 10 A0 E3 MOV     R1, #0
.text:75C7A3E8 00 80 A0 E1 MOV     R8, R0
.text:75C7A3EC 00 20 A0 E1 MOV     R2, R0                          ; char *
.text:75C7A3F0 00 10 8D E5 STR     R1, [SP,#0x4F0+var_4F0]         ; int
.text:75C7A3F4 0A 30 A0 E1 MOV     R3, R10                         ; unsigned int
.text:75C7A3F8 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A3FC 19 10 84 E2 ADD     R1, R4, #0x19                   ; char *
.text:75C7A400 12 F9 FF EB BL      _ZN10llIlIlIlll10lllIIIllIIEPKcPcji ; llIlIlIlll::lllIIIllII(char const*,char *,uint,int)
.text:75C7A404 1C B0 9D E5 LDR     R11, [SP,#0x4F0+var_4D4]
.text:75C7A408 0B 00 A0 E1 MOV     R0, R11                         ; unsigned int
.text:75C7A40C 91 E0 FF EB BL      malloc_0                        ; 分配内存放解密后数据
.text:75C7A410 00 C0 A0 E3 MOV     R12, #0
.text:75C7A414 20 30 8D E2 ADD     R3, SP, #0x4F0+var_4D0
.text:75C7A418 00 A0 A0 E1 MOV     R10, R0
.text:75C7A41C 04 30 8D E5 STR     R3, [SP,#0x4F0+var_4EC]
.text:75C7A420 18 20 9D E5 LDR     R2, [SP,#0x4F0+var_4D8]
.text:75C7A424 00 30 A0 E1 MOV     R3, R0
.text:75C7A428 00 B0 8D E5 STR     R11, [SP,#0x4F0+var_4F0]
.text:75C7A42C 01 00 A0 E3 MOV     R0, #1
.text:75C7A430 08 10 A0 E1 MOV     R1, R8
.text:75C7A434 20 C0 8D E5 STR     R12, [SP,#0x4F0+var_4D0]
.text:75C7A438 21 1E 00 EB BL      _Z10IlllIIIIll10IIlIlIlllIPKhjPhjPj ; 解密出明文dll
.text:75C7A43C 00 00 50 E3 CMP     R0, #0
.text:75C7A440 3A 00 00 0A BEQ     loc_75C7A530
.text:75C7A444
.text:75C7A444             loc_75C7A444                            ; CODE XREF: hook_mono_image_open_from_data_with_name+418↓j
.text:75C7A444 0A 00 A0 E1 MOV     R0, R10                         ; void *
.text:75C7A448 90 E0 FF EB BL      _Z10IIIIIllIIlPv                ; IIIIIllIIl(void *)
.text:75C7A44C 08 00 A0 E1 MOV     R0, R8                          ; void *
.text:75C7A450 8E E0 FF EB BL      _Z10IIIIIllIIlPv                ; IIIIIllIIl(void *)
.text:75C7A454 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A458 DC F0 FF EB BL      _ZN10llIlIlIlllD2Ev             ; llIlIlIlll::~llIlIlIlll()
.text:75C7A45C
.text:75C7A45C             loc_75C7A45C                            ; CODE XREF: hook_mono_image_open_from_data_with_name+88↑j
.text:75C7A45C                                                     ; hook_mono_image_open_from_data_with_name+11C↑j ...
.text:75C7A45C F0 34 9D E5 LDR     R3, [SP,#0x4F0+arg_0]
.text:75C7A460 6C 11 9F E5 LDR     R1, =(dword_75CB4068 - 0x75C7A474)
.text:75C7A464 04 70 8D E5 STR     R7, [SP,#0x4F0+var_4EC]
.text:75C7A468 00 30 8D E5 STR     R3, [SP,#0x4F0+var_4F0]
.text:75C7A46C 01 10 8F E0 ADD     R1, PC, R1                      ; dword_75CB4068
.text:75C7A470 08 C0 91 E5 LDR     R12, [R1,#(dword_75CB4070 - 0x75CB4068)]
.text:75C7A474 0C 20 9D E5 LDR     R2, [SP,#0x4F0+var_4E4]
.text:75C7A478 09 30 A0 E1 MOV     R3, R9
.text:75C7A47C 04 00 A0 E1 MOV     R0, R4
.text:75C7A480 05 10 A0 E1 MOV     R1, R5
.text:75C7A484 3C FF 2F E1 BLX     R12
.text:75C7A488 00 80 A0 E1 MOV     R8, R0
.text:75C7A48C
.text:75C7A48C             loc_75C7A48C                            ; CODE XREF: hook_mono_image_open_from_data_with_name+3F4↓j
.text:75C7A48C 44 11 9F E5 LDR     R1, =(unk_75CACB70 - 0x75C7A49C)
.text:75C7A490 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A494 01 10 8F E0 ADD     R1, PC, R1                      ; unk_75CACB70 ; char *
.text:75C7A498 B0 FA FF EB BL      DecString
.text:75C7A49C 06 00 A0 E1 MOV     R0, R6
.text:75C7A4A0 94 F9 FF EB BL      _ZN10lIIIlIlIIlcvPcEv           ; lIIIlIlIIl::operator char *(void)
.text:75C7A4A4 00 10 A0 E1 MOV     R1, R0                          ; needle
.text:75C7A4A8 07 00 A0 E1 MOV     R0, R7                          ; haystack
.text:75C7A4AC 69 D9 FF EB BL      strstr
.text:75C7A4B0 00 70 A0 E1 MOV     R7, R0
.text:75C7A4B4 06 00 A0 E1 MOV     R0, R6                          ; this
.text:75C7A4B8 6C F9 FF EB BL      _ZN10lIIIlIlIIlD2Ev             ; lIIIlIlIIl::~lIIIlIlIIl()
.text:75C7A4BC 00 00 57 E3 CMP     R7, #0
.text:75C7A4C0 00 00 55 13 CMPNE   R5, #0
.text:75C7A4C4 04 00 00 0A BEQ     loc_75C7A4DC
.text:75C7A4C8 00 30 A0 E3 MOV     R3, #0
.text:75C7A4CC 05 50 84 E0 ADD     R5, R4, R5
.text:75C7A4D0
.text:75C7A4D0             loc_75C7A4D0                            ; CODE XREF: hook_mono_image_open_from_data_with_name+3A0↓j
.text:75C7A4D0 01 30 C4 E4 STRB    R3, [R4],#1
.text:75C7A4D4 05 00 54 E1 CMP     R4, R5
.text:75C7A4D8 FC FF FF 1A BNE     loc_75C7A4D0
.text:75C7A4DC
.text:75C7A4DC             loc_75C7A4DC                            ; CODE XREF: hook_mono_image_open_from_data_with_name+38C↑j
.text:75C7A4DC                                                     ; hook_mono_image_open_from_data_with_name+3EC↓j
.text:75C7A4DC 08 30 9D E5 LDR     R3, [SP,#0x4F0+var_4E8]
.text:75C7A4E0 C4 24 9D E5 LDR     R2, [SP,#0x4F0+var_2C]
.text:75C7A4E4 08 00 A0 E1 MOV     R0, R8
.text:75C7A4E8 00 30 93 E5 LDR     R3, [R3]
.text:75C7A4EC 03 00 52 E1 CMP     R2, R3
.text:75C7A4F0 24 00 00 1A BNE     loc_75C7A588
.text:75C7A4F4 13 DD 8D E2 ADD     SP, SP, #0x4C0
.text:75C7A4F8 0C D0 8D E2 ADD     SP, SP, #0xC
.text:75C7A4FC F0 8F BD E8 LDMFD   SP!, {R4-R11,PC}
解密后 dump dll R10是基址,R11是大小,如下图:

9

9

[Asm] 纯文本查看 复制代码
static main(void)
    {
        auto fp, begin, end, dexbyte;
        fp = fopen("d:\\dump.dll", "wb"); //打开或创建一个文件
        begin =  R10;              //dll基址
        end = begin + R11;            //dll基址 + dll文件大小
        for ( dexbyte = begin; dexbyte < end;dexbyte ++ )
        {
            fputc(Byte(dexbyte), fp);     //按字节将其dump到本地文件中
        }
    }
将dump出来的dll反编后如下图:

10

10

3.在hook_mono_assembly_load_from_full主要是计算将解密dll的PE头清楚后的计算crc值。七: libengine模块分析1. 在com/inca/security/Core/AppGuardEngine类中注册的第一个Native函数中通过dlopen、dlsym调用libengine.sox解密的soJNI比函数   .text:75C81168  IlIIIIIIII (文件偏移 13168)         (Landroid/content/Context;Ljava/lang/String;[B)I2.通过dlopen、dlsym获取下面3个函数。
以下这几个函数被调用
Initialize         (文件偏移27144)
CreateObject        (文件偏移2A2F4)
Clazz::IlIllllIIl (文件偏移2B1B0)3. Initialize函数
[Asm] 纯文本查看 复制代码
//反调试 
.text:7CEAE17A             loc_7CEAE17A                            ; CODE XREF: Initialize+32↑j
.text:7CEAE17A CC 4B       LDR     R3, =(_ZN10lllllIIIll11IIlIlIIIlllE_ptr - 0x7CF87D44)
.text:7CEAE17C EB 58       LDR     R3, [R5,R3]
.text:7CEAE17E 1E 60       STR     R6, [R3]                        ; lllllIIIll::IIlIlIIIlll
.text:7CEAE180 19 F0 B6 FD BL      Anit_Dbg                        ; 反调试(读进程状态)
.text:7CEAE184 B8 42       CMP     R0, R7
.text:7CEAE186 00 D0       BEQ     loc_7CEAE18A
.text:7CEAE188 D4 E1       B       loc_7CEAE534

//动态获取函数
.text:7CEAE33A             loc_7CEAE33A                            ; CODE XREF: Initialize+1F2↑j
.text:7CEAE33A 1A 60       STR     R2, [R3]                        ; Global::llIlIllllI
.text:7CEAE33C 1E F0 DA FC BL      GetlibcFunc
.text:7CEAE340 1F F0 76 FD BL      GetlibdvmFunc
.text:7CEAE344 00 28       CMP     R0, #0
.text:7CEAE346 04 D0       BEQ     loc_7CEAE352
.text:7CEAE348 67 4B       LDR     R3, =(_ZN6Global11llllIIlIlIIE_ptr - 0x7CF87D44)
.text:7CEAE34A EB 58       LDR     R3, [R5,R3]
.text:7CEAE34C 04 93       STR     R3, [SP,#0x1A8+var_198]
.text:7CEAE34E 01 23       MOVS    R3, #1
.text:7CEAE350 1E E0       B       loc_7CEAE390

4. CreateObject函数
计算libengine.sox解密后的函数crc (文件偏移 2A1F6)
[Asm] 纯文本查看 复制代码
.text:7CFA41F6             loc_7CFA41F6                            ; CODE XREF: IlllIIIlll::IlllIIIlll(_JNIEnv *,void *)+324↓j
.text:7CFA41F6 39 4B       LDR     R3, =(_ZN6Global11lIIIIIIIIIIE_ptr - 0x7D07AD44)
.text:7CFA41F8 07 9A       LDR     R2, [SP,#0xF8+var_DC]
.text:7CFA41FA F3 58       LDR     R3, [R6,R3]
.text:7CFA41FC 10 1C       MOVS    R0, R2                          ; void *
.text:7CFA41FE 1A 60       STR     R2, [R3]                        ; Global::lIIIIIIIIII
.text:7CFA4200 34 F0 26 F8 BL      GetCrc32                        ; 计算libengine.sox解密后的函数crc
.text:7CFA4204 36 4B       LDR     R3, =(_ZN6Global11lIIlIlIIIlIE_ptr - 0x7D07AD44)

计算CRC函数代码如下:
[Asm] 纯文本查看 复制代码
.text:7CFD8250             EXPORT GetCrc32
.text:7CFD8250             GetCrc32                                ; CODE XREF: IlllIIIlll::IlllIIIlll(_JNIEnv *,void *)+2E4↑p
.text:7CFD8250                                                     ; IlllIllIll::lIIIllIlIll(lIIIllIlllII *,int,IIlIllIlllll *,bool *,char *,bool)+88↑p ...
.text:7CFD8250             ; __unwind {
.text:7CFD8250 F8 B5       PUSH    {R3-R7,LR}
.text:7CFD8252 22 4B       LDR     R3, =(_ZN6Global10lIIllIllIlE_ptr - 0x7CFD825A)
.text:7CFD8254 00 25       MOVS    R5, #0
.text:7CFD8256 7B 44       ADD     R3, PC                          ; _ZN6Global10lIIllIllIlE_ptr
.text:7CFD8258 1B 68       LDR     R3, [R3]                        ; Global::lIIllIllIl
.text:7CFD825A 1B 68       LDR     R3, [R3]                        ; Global::lIIllIllIl
.text:7CFD825C 17 2B       CMP     R3, #0x17
.text:7CFD825E 3B DC       BGT     loc_7CFD82D8
.text:7CFD8260 04 1C       MOVS    R4, R0
.text:7CFD8262 17 2B       CMP     R3, #0x17
.text:7CFD8264 08 D1       BNE     loc_7CFD8278
.text:7CFD8266 1E 48       LDR     R0, =(_ZN6Global11IlIIIIlllllE_ptr - 0x7CFD826E)
.text:7CFD8268 1E 49       LDR     R1, =(aN - 0x7CFD8272)
.text:7CFD826A 78 44       ADD     R0, PC                          ; _ZN6Global11IlIIIIlllllE_ptr
.text:7CFD826C 00 68       LDR     R0, [R0]                        ; Global::IlIIIIlllll
.text:7CFD826E 79 44       ADD     R1, PC                          ; "N"
.text:7CFD8270 48 F0 BE FB BL      j_strcmp
.text:7CFD8274 A8 42       CMP     R0, R5
.text:7CFD8276 2F D0       BEQ     loc_7CFD82D8
.text:7CFD8278
.text:7CFD8278             loc_7CFD8278                            ; CODE XREF: GetCrc32+14↑j
.text:7CFD8278 00 26       MOVS    R6, #0
.text:7CFD827A 23 1C       MOVS    R3, R4
.text:7CFD827C 30 1C       MOVS    R0, R6                          ; this
.text:7CFD827E B0 33       ADDS    R3, #0xB0
.text:7CFD8280 1F 68       LDR     R7, [R3]
.text:7CFD8282
.text:7CFD8282             loc_7CFD8282                            ; CODE XREF: GetCrc32+84↓j
.text:7CFD8282 23 1C       MOVS    R3, R4
.text:7CFD8284 B4 33       ADDS    R3, #0xB4
.text:7CFD8286 1B 68       LDR     R3, [R3]
.text:7CFD8288 9E 42       CMP     R6, R3                          ; 判断是否结束
.text:7CFD828A 24 D2       BCS     loc_7CFD82D6
.text:7CFD828C 23 1C       MOVS    R3, R4
.text:7CFD828E BC 33       ADDS    R3, #0xBC
.text:7CFD8290 1B 68       LDR     R3, [R3]
.text:7CFD8292 B2 00       LSLS    R2, R6, #2
.text:7CFD8294 D5 58       LDR     R5, [R2,R3]
.text:7CFD8296
.text:7CFD8296             loc_7CFD8296                            ; CODE XREF: GetCrc32+80↓j
.text:7CFD8296 00 2D       CMP     R5, #0
.text:7CFD8298 1B D0       BEQ     loc_7CFD82D2
.text:7CFD829A 2B 01       LSLS    R3, R5, #4
.text:7CFD829C FB 18       ADDS    R3, R7, R3                      ; unsigned int
.text:7CFD829E 19 7B       LDRB    R1, [R3,#0xC]
.text:7CFD82A0 0A 11       ASRS    R2, R1, #4
.text:7CFD82A2 01 3A       SUBS    R2, #1
.text:7CFD82A4 01 2A       CMP     R2, #1
.text:7CFD82A6 0E D8       BHI     loc_7CFD82C6
.text:7CFD82A8 DA 89       LDRH    R2, [R3,#0xE]
.text:7CFD82AA 00 2A       CMP     R2, #0
.text:7CFD82AC 0B D0       BEQ     loc_7CFD82C6
.text:7CFD82AE 0F 22       MOVS    R2, #0xF
.text:7CFD82B0 0A 40       ANDS    R2, R1
.text:7CFD82B2 02 2A       CMP     R2, #2
.text:7CFD82B4 07 D1       BNE     loc_7CFD82C6
.text:7CFD82B6 22 1C       MOVS    R2, R4
.text:7CFD82B8 8C 32       ADDS    R2, #0x8C
.text:7CFD82BA 11 68       LDR     R1, [R2]
.text:7CFD82BC 5A 68       LDR     R2, [R3,#4]
.text:7CFD82BE 51 18       ADDS    R1, R2, R1                      ; unsigned int
.text:7CFD82C0 9A 68       LDR     R2, [R3,#8]                     ; unsigned __int8 *
.text:7CFD82C2 E5 F7 F1 FF BL      adler_adler32                   ; R1函数首地址,R2函数大小
.text:7CFD82C6
.text:7CFD82C6             loc_7CFD82C6                            ; CODE XREF: GetCrc32+56↑j
.text:7CFD82C6                                                     ; GetCrc32+5C↑j ...
.text:7CFD82C6 23 1C       MOVS    R3, R4
.text:7CFD82C8 C0 33       ADDS    R3, #0xC0
.text:7CFD82CA 1B 68       LDR     R3, [R3]
.text:7CFD82CC AD 00       LSLS    R5, R5, #2
.text:7CFD82CE 5D 59       LDR     R5, [R3,R5]
.text:7CFD82D0 E1 E7       B       loc_7CFD8296
.text:7CFD82D2             ; ---------------------------------------------------------------------------
.text:7CFD82D2
.text:7CFD82D2             loc_7CFD82D2                            ; CODE XREF: GetCrc32+48↑j
.text:7CFD82D2 01 36       ADDS    R6, #1
.text:7CFD82D4 D5 E7       B       loc_7CFD8282
.text:7CFD82D6             ; ---------------------------------------------------------------------------
.text:7CFD82D6
.text:7CFD82D6             loc_7CFD82D6                            ; CODE XREF: GetCrc32+3A↑j
.text:7CFD82D6 05 1C       ADDS    R5, R0, #0
.text:7CFD82D8
.text:7CFD82D8             loc_7CFD82D8                            ; CODE XREF: GetCrc32+E↑j
.text:7CFD82D8                                                     ; GetCrc32+26↑j
.text:7CFD82D8 28 1C       MOVS    R0, R5
.text:7CFD82DA F8 BD       POP     {R3-R7,PC}

5. IlIllllIIl 函数
计算libc.so代码节的crc值 与.text节的CRC(文件偏移398AE)
[Asm] 纯文本查看 复制代码
.text:7779C8AE 59 68       LDR     R1, [R3,#4]
.text:7779C8B0 33 69       LDR     R3, [R6,#0x10]                  ; unsigned int
.text:7779C8B2 C9 18       ADDS    R1, R1, R3                      ; unsigned int
.text:7779C8B4 0A F0 F8 FC BL      _ZN5adler7adler32EmPKhj         ; 计算libc.so代码节的crc值 AA4AC826

6.计算libcompatible.so函数的Crc与.text节的CRC
[Asm] 纯文本查看 复制代码
.text:7C88BAB2
.text:7C88BAB2             ; IlllIIIIlIl(IlIIlIIIll *)
.text:7C88BAB2             EXPORT _Z11IlllIIIIlIlP10IlIIlIIIll
.text:7C88BAB2             _Z11IlllIIIIlIlP10IlIIlIIIll            ; CODE XREF: IlllIllIll::IlIllIllll(lIIIllIlllII *,int,IIlIllIlllll *,bool *,char *,bool)+196↑p
.text:7C88BAB2                                                     ; IlllIllIll::IlllIllIll(_jobject *,int,long long,long long,uint,char **,char **,char **,char **,char **)+80C↑p
.text:7C88BAB2             ; __unwind {
.text:7C88BAB2 F8 B5       PUSH    {R3-R7,LR}
.text:7C88BAB4 00 26       MOVS    R6, #0
.text:7C88BAB6 FC 30       ADDS    R0, #0xFC
.text:7C88BAB8 04 1C       MOVS    R4, R0
.text:7C88BABA 87 6C       LDR     R7, [R0,#0x48]
.text:7C88BABC 30 1C       ADDS    R0, R6, #0                      ; this
.text:7C88BABE
.text:7C88BABE             loc_7C88BABE                            ; CODE XREF: IlllIIIIlIl(IlIIlIIIll *)+4E↓j
.text:7C88BABE A3 6A       LDR     R3, [R4,#0x28]
.text:7C88BAC0 9E 42       CMP     R6, R3                          ; 判断函数个数是否结束
.text:7C88BAC2 1E D2       BCS     locret_7C88BB02
.text:7C88BAC4 22 6B       LDR     R2, [R4,#0x30]
.text:7C88BAC6 B3 00       LSLS    R3, R6, #2
.text:7C88BAC8 9D 58       LDR     R5, [R3,R2]
.text:7C88BACA
.text:7C88BACA             loc_7C88BACA                            ; CODE XREF: IlllIIIIlIl(IlIIlIIIll *)+4A↓j
.text:7C88BACA 00 2D       CMP     R5, #0
.text:7C88BACC 17 D0       BEQ     loc_7C88BAFE                    ; i++
.text:7C88BACE 2B 01       LSLS    R3, R5, #4
.text:7C88BAD0 FB 18       ADDS    R3, R7, R3                      ; unsigned int
.text:7C88BAD2 19 7B       LDRB    R1, [R3,#0xC]
.text:7C88BAD4 0A 11       ASRS    R2, R1, #4
.text:7C88BAD6 01 3A       SUBS    R2, #1
.text:7C88BAD8 01 2A       CMP     R2, #1
.text:7C88BADA 0C D8       BHI     loc_7C88BAF6
.text:7C88BADC DA 89       LDRH    R2, [R3,#0xE]
.text:7C88BADE 00 2A       CMP     R2, #0
.text:7C88BAE0 09 D0       BEQ     loc_7C88BAF6
.text:7C88BAE2 0F 22       MOVS    R2, #0xF
.text:7C88BAE4 0A 40       ANDS    R2, R1
.text:7C88BAE6 02 2A       CMP     R2, #2
.text:7C88BAE8 05 D1       BNE     loc_7C88BAF6
.text:7C88BAEA 5A 68       LDR     R2, [R3,#4]
.text:7C88BAEC 21 6A       LDR     R1, [R4,#0x20]
.text:7C88BAEE 51 18       ADDS    R1, R2, R1                      ; unsigned int
.text:7C88BAF0 9A 68       LDR     R2, [R3,#8]                     ; unsigned __int8 *
.text:7C88BAF2 E5 F7 D9 FB BL      adler_adler32                   ; 计算crc32
.text:7C88BAF6
.text:7C88BAF6             loc_7C88BAF6                            ; CODE XREF: IlllIIIIlIl(IlIIlIIIll *)+28↑j
.text:7C88BAF6                                                     ; IlllIIIIlIl(IlIIlIIIll *)+2E↑j ...
.text:7C88BAF6 63 6B       LDR     R3, [R4,#0x34]
.text:7C88BAF8 AD 00       LSLS    R5, R5, #2
.text:7C88BAFA 5D 59       LDR     R5, [R3,R5]
.text:7C88BAFC E5 E7       B       loc_7C88BACA
.text:7C88BAFE             ; ---------------------------------------------------------------------------
.text:7C88BAFE
.text:7C88BAFE             loc_7C88BAFE                            ; CODE XREF: IlllIIIIlIl(IlIIlIIIll *)+1A↑j
.text:7C88BAFE 01 36       ADDS    R6, #1                          ; i++
.text:7C88BB00 DD E7       B       loc_7C88BABE
.text:7C88BB02             ; ---------------------------------------------------------------------------
.text:7C88BB02
.text:7C88BB02             locret_7C88BB02                         ; CODE XREF: IlllIIIIlIl(IlIIlIIIll *)+10↑j
.text:7C88BB02 F8 BD       POP     {R3-R7,PC}

计算so的.text节代码的crc值 (文件偏移 39860)
[Asm] 纯文本查看 复制代码
text:7C866860                                                     ; IlllIllIll::IlllIllIll(_jobject *,int,long long,long long,uint,char **,char **,char **,char **,char **)+8E2↑j
.text:7C866860 00 23       MOVS    R3, #0
.text:7C866862 06 93       STR     R3, [SP,#0xB20+var_B08]
.text:7C866864 03 9B       LDR     R3, [SP,#0xB20+var_B14]
.text:7C866866 00 2B       CMP     R3, #0
.text:7C866868 2C D0       BEQ     loc_7C8668C4                    ; 结束
.text:7C86686A
.text:7C86686A             loc_7C86686A                            ; CODE XREF: IlllIllIll::IlllIllIll(_jobject *,int,long long,long long,uint,char **,char **,char **,char **,char **)+94A↓j
.text:7C86686A 06 9B       LDR     R3, [SP,#0xB20+var_B08]
.text:7C86686C 09 9A       LDR     R2, [SP,#0xB20+var_AFC]
.text:7C86686E 93 42       CMP     R3, R2                          ; 判断是否结束
.text:7C866870 28 D0       BEQ     loc_7C8668C4                    ; 结束
.text:7C866872 28 1C       MOVS    R0, R5                          ; this
.text:7C866874 06 99       LDR     R1, [SP,#0xB20+var_B08]         ; unsigned int
.text:7C866876 1C F0 46 FE BL      _ZN10lIIIIllIII10lIlIIlIIll10IlIIlIlIllEj ; lIIIIllIII::lIlIIlIIll::IlIIlIlIll(uint)
.text:7C86687A 03 9B       LDR     R3, [SP,#0xB20+var_B14]
.text:7C86687C 02 68       LDR     R2, [R0]
.text:7C86687E 06 1C       MOVS    R6, R0
.text:7C866880 98 18       ADDS    R0, R3, R2
.text:7C866882 2B 68       LDR     R3, [R5]
.text:7C866884 5A 68       LDR     R2, [R3,#4]
.text:7C866886 9B 68       LDR     R3, [R3,#8]
.text:7C866888 D3 18       ADDS    R3, R2, R3
.text:7C86688A 98 42       CMP     R0, R3
.text:7C86688C 1C D8       BHI     loc_7C8668C8
.text:7C86688E 53 49       LDR     R1, =(aText - 0x7C866896)
.text:7C866890 05 22       MOVS    R2, #5
.text:7C866892 79 44       ADD     R1, PC                          ; ".text"
.text:7C866894 6C F0 74 FE BL      j_strncmp                       ; 判断是否为.text
.text:7C866898 00 28       CMP     R0, #0
.text:7C86689A 0F D1       BNE     loc_7C8668BC
.text:7C86689C D7 23       MOVS    R3, #0xD7
.text:7C86689E 72 69       LDR     R2, [R6,#0x14]                  ; unsigned __int8 *
.text:7C8668A0 9B 00       LSLS    R3, R3, #2
.text:7C8668A2 FA 50       STR     R2, [R7,R3]
.text:7C8668A4 D8 23       MOVS    R3, #0xD8
.text:7C8668A6 31 69       LDR     R1, [R6,#0x10]
.text:7C8668A8 9B 00       LSLS    R3, R3, #2
.text:7C8668AA F9 50       STR     R1, [R7,R3]
.text:7C8668AC 2B 68       LDR     R3, [R5]
.text:7C8668AE 59 68       LDR     R1, [R3,#4]
.text:7C8668B0 33 69       LDR     R3, [R6,#0x10]                  ; unsigned int
.text:7C8668B2 C9 18       ADDS    R1, R1, R3                      ; unsigned int
.text:7C8668B4 0A F0 F8 FC BL      adler_adler32                   ; 计算libc.so代码节的crc值
.text:7C8668B8 0A 9B       LDR     R3, [SP,#0xB20+var_AF8]
.text:7C8668BA F8 50       STR     R0, [R7,R3]
.text:7C8668BC
.text:7C8668BC             loc_7C8668BC                            ; CODE XREF: IlllIllIll::IlllIllIll(_jobject *,int,long long,long long,uint,char **,char **,char **,char **,char **)+922↑j
.text:7C8668BC 06 9B       LDR     R3, [SP,#0xB20+var_B08]
.text:7C8668BE 01 33       ADDS    R3, #1

7.判断是否有种破解工具与是否在模拟器中运行,创建线程检测比较CRC值。
检测是否有的非法工具部分字符串如下:
[Asm] 纯文本查看 复制代码
LuckyPatcher v4.1.9(幸运破解器)
LuckyPatcher v5.8.9
gamehacker (烧饼游戏修改器)
com.cih.game_cih:*(金手指)
(com.huluxia.gametools)葫芦侠
Cheat Engine修改器 
tcpdump
GenyMotion(模拟器)
Windroy
BlueStacks
org.sbtools.gamespeed燒餅修改器
org.game.master 游戏修改大师

在线程中比较CRC值。
[Asm] 纯文本查看 复制代码
.text:7D34674C             Cmp_Crc32                               ; CODE XREF: IlllIllIll::IIIlllIlllII(lIIIllIlllII *,IIlIllIlllll *)+40A↓p
.text:7D34674C                                                     ; IlllIllIll::lIllllllIlII(lIIIllIlllII *,IIlIllIlllll *)+4EA↓p ...
.text:7D34674C
.text:7D34674C             var_20          = -0x20
.text:7D34674C             var_1C          = -0x1C
.text:7D34674C             arg_0           =  0
.text:7D34674C             arg_8           =  8
.text:7D34674C
.text:7D34674C             ; __unwind {
.text:7D34674C F7 B5                       PUSH    {R0-R2,R4-R7,LR}
.text:7D34674E 0A AC                       ADD     R4, SP, #0x20+arg_8
.text:7D346750 24 78                       LDRB    R4, [R4]
.text:7D346752 00 94                       STR     R4, [SP,#0x20+var_20]
.text:7D346754 00 29                       CMP     R1, #0
.text:7D346756 05 D0                       BEQ     loc_7D346764
.text:7D346758 09 25                       MOVS    R5, #9
.text:7D34675A D4 00                       LSLS    R4, R2, #3
.text:7D34675C 0C 19                       ADDS    R4, R1, R4
.text:7D34675E 65 60                       STR     R5, [R4,#4]
.text:7D346760 00 25                       MOVS    R5, #0
.text:7D346762 A5 60                       STR     R5, [R4,#8]
.text:7D346764
.text:7D346764             loc_7D346764                            ; CODE XREF: Cmp_Crc32+A↑j
.text:7D346764 00 9C                       LDR     R4, [SP,#0x20+var_20]
.text:7D346766 00 2C                       CMP     R4, #0
.text:7D346768 07 D1                       BNE     loc_7D34677A
.text:7D34676A 8C 24 E4 00                 MOVS    R4, #0x460
.text:7D34676E 04 19                       ADDS    R4, R0, R4
.text:7D346770 24 68                       LDR     R4, [R4]
.text:7D346772 A4 05                       LSLS    R4, R4, #0x16
.text:7D346774 01 D5                       BPL     loc_7D34677A
.text:7D346776
.text:7D346776             loc_7D346776                            ; CODE XREF: Cmp_Crc32+38↓j
.text:7D346776                                                     ; Cmp_Crc32+58↓j
.text:7D346776 00 20                       MOVS    R0, #0
.text:7D346778 46 E0                       B       locret_7D346808
.text:7D34677A             ; ---------------------------------------------------------------------------
.text:7D34677A
.text:7D34677A             loc_7D34677A                            ; CODE XREF: Cmp_Crc32+1C↑j
.text:7D34677A                                                     ; Cmp_Crc32+28↑j
.text:7D34677A 24 4C                       LDR     R4, =(_ZN6Global10llIIIlIlIIE_ptr - 0x7D346780)
.text:7D34677C 7C 44                       ADD     R4, PC          ; _ZN6Global10llIIIlIlIIE_ptr
.text:7D34677E 24 68                       LDR     R4, [R4]        ; Global::llIIIlIlII
.text:7D346780 26 78                       LDRB    R6, [R4]        ; Global::llIIIlIlII
.text:7D346782 00 2E                       CMP     R6, #0
.text:7D346784 F7 D1                       BNE     loc_7D346776
.text:7D346786 1D 1C                       MOVS    R5, R3
.text:7D346788 21 4B                       LDR     R3, =(_ZN6Global11lIIIIIIIIIIE_ptr - 0x7D346790)
.text:7D34678A 04 1C                       MOVS    R4, R0
.text:7D34678C 7B 44                       ADD     R3, PC          ; _ZN6Global11lIIIIIIIIIIE_ptr
.text:7D34678E 1B 68                       LDR     R3, [R3]        ; Global::lIIIIIIIIII
.text:7D346790 01 92                       STR     R2, [SP,#0x20+var_1C]
.text:7D346792 0F 1C                       MOVS    R7, R1
.text:7D346794 18 68                       LDR     R0, [R3]        ; void *
.text:7D346796 29 F0 5B FD                 BL      GetCrc32
.text:7D34679A 1E 4B                       LDR     R3, =(_ZN6Global11lIIlIlIIIlIE_ptr - 0x7D3467A0)
.text:7D34679C 7B 44                       ADD     R3, PC          ; _ZN6Global11lIIlIlIIIlIE_ptr
.text:7D34679E 1B 68                       LDR     R3, [R3]        ; Crc32Dword_E13E1FA9
.text:7D3467A0 1B 68                       LDR     R3, [R3]
.text:7D3467A2 98 42                       CMP     R0, R3          ; 比较crc32值
.text:7D3467A4 E7 D0                       BEQ     loc_7D346776
.text:7D3467A6 1C 4A                       LDR     R2, =(_ZN10IlllIllIll11llllIllIIIlE - 0x7D3467AC)
.text:7D3467A8 7A 44                       ADD     R2, PC          ; IlllIllIll::llllIllIIIl
.text:7D3467AA 13 68                       LDR     R3, [R2]        ; IlllIllIll::llllIllIIIl
.text:7D3467AC 01 33                       ADDS    R3, #1
.text:7D3467AE 13 60                       STR     R3, [R2]        ; IlllIllIll::llllIllIIIl
.text:7D3467B0 00 2D                       CMP     R5, #0
.text:7D3467B2 1D D0                       BEQ     loc_7D3467F0
.text:7D3467B4 02 21                       MOVS    R1, #2
.text:7D3467B6 2A 68                       LDR     R2, [R5]
.text:7D3467B8 13 01                       LSLS    R3, R2, #4
.text:7D3467BA EB 18                       ADDS    R3, R5, R3
.text:7D3467BC 59 60                       STR     R1, [R3,#4]
.text:7D3467BE 0A 21                       MOVS    R1, #0xA
.text:7D3467C0 DE 60                       STR     R6, [R3,#0xC]
.text:7D3467C2 99 60                       STR     R1, [R3,#8]
.text:7D3467C4 1E 61                       STR     R6, [R3,#0x10]
.text:7D3467C6 08 9B                       LDR     R3, [SP,#0x20+arg_0]
.text:7D3467C8 01 32                       ADDS    R2, #1
.text:7D3467CA 2A 60                       STR     R2, [R5]
.text:7D3467CC 00 2B                       CMP     R3, #0
.text:7D3467CE 02 D0                       BEQ     loc_7D3467D6
.text:7D3467D0 01 23                       MOVS    R3, #1
.text:7D3467D2 08 9A                       LDR     R2, [SP,#0x20+arg_0]
.text:7D3467D4 13 70                       STRB    R3, [R2]
.text:7D3467D6
.text:7D3467D6             loc_7D3467D6                            ; CODE XREF: Cmp_Crc32+82↑j
.text:7D3467D6 00 9B                       LDR     R3, [SP,#0x20+var_20]
.text:7D3467D8 00 2B                       CMP     R3, #0
.text:7D3467DA 09 D1                       BNE     loc_7D3467F0
.text:7D3467DC 8D 23 DB 00                 MOVS    R3, #0x468
.text:7D3467E0 E3 18                       ADDS    R3, R4, R3
.text:7D3467E2 1B 68                       LDR     R3, [R3]
.text:7D3467E4 9B 05                       LSLS    R3, R3, #0x16
.text:7D3467E6 03 D4                       BMI     loc_7D3467F0
.text:7D3467E8 0C 4A                       LDR     R2, =0x49C
.text:7D3467EA A3 58                       LDR     R3, [R4,R2]
.text:7D3467EC 01 33                       ADDS    R3, #1
.text:7D3467EE A3 50                       STR     R3, [R4,R2]
.text:7D3467F0
.text:7D3467F0             loc_7D3467F0                            ; CODE XREF: Cmp_Crc32+66↑j
.text:7D3467F0                                                     ; Cmp_Crc32+8E↑j ...
.text:7D3467F0 00 2F                       CMP     R7, #0
.text:7D3467F2 04 D0                       BEQ     loc_7D3467FE
.text:7D3467F4 01 9B                       LDR     R3, [SP,#0x20+var_1C]
.text:7D3467F6 DA 00                       LSLS    R2, R3, #3
.text:7D3467F8 AA 23                       MOVS    R3, #0xAA
.text:7D3467FA BA 18                       ADDS    R2, R7, R2
.text:7D3467FC 93 60                       STR     R3, [R2,#8]
.text:7D3467FE
.text:7D3467FE             loc_7D3467FE                            ; CODE XREF: Cmp_Crc32+A6↑j
.text:7D3467FE 01 20                       MOVS    R0, #1
.text:7D346800 07 4B                       LDR     R3, =(_ZN6Global10lIlIIllIIlE_ptr - 0x7D346806)
.text:7D346802 7B 44                       ADD     R3, PC          ; _ZN6Global10lIlIIllIIlE_ptr
.text:7D346804 1B 68                       LDR     R3, [R3]        ; Global::lIlIIllIIl
.text:7D346806 58 72                       STRB    R0, [R3,#(byte_7D413581 - 0x7D413578)]
.text:7D346808
.text:7D346808             locret_7D346808                         ; CODE XREF: Cmp_Crc32+2C↑j
.text:7D346808 FE BD                       POP     {R1-R7,PC}

截图监控
[Asm] 纯文本查看 复制代码
.text:7D34B944 2A 49                       LDR     R1, =(unk_7D3E51F8 - 0x7D34B94E)
.text:7D34B946 3D 59                       LDR     R5, [R7,R4]
.text:7D34B948 7F AC                       ADD     R4, SP, #0xB20+var_924
.text:7D34B94A 79 44                       ADD     R1, PC          ; unk_7D3E51F8
.text:7D34B94C 20 1C                       MOVS    R0, R4          ; this
.text:7D34B94E 4C 31                       ADDS    R1, #0x4C ; 'L' ; char *
.text:7D34B950 0A F0 62 F8                 BL      DecString
.text:7D34B954 20 1C                       MOVS    R0, R4
.text:7D34B956 09 F0 77 FF                 BL      _ZN10IIllIIlIIIcvPcEv ; IIllIIlIII::operator char *(void)
.text:7D34B95A 01 1C                       MOVS    R1, R0
.text:7D34B95C 04 22                       MOVS    R2, #4
.text:7D34B95E 28 1C                       MOVS    R0, R5
.text:7D34B960 6D F0 9E F8                 BL      j_inotify_add_watch ; 截图监控
.text:7D34B964 E0 25 AD 00                 MOVS    R5, #0x380
.text:7D34B968 78 51                       STR     R0, [R7,R5]
.text:7D34B96A 20 1C                       MOVS    R0, R4          ; this
.text:7D34B96C 09 F0 42 FF                 BL      _ZN10IIllIIlIIID2Ev ; IIllIIlIII::~IIllIIlIII()
.text:7D34B970 7B 59                       LDR     R3, [R7,R5]
.text:7D34B972 00 2B                       CMP     R3, #0
.text:7D34B974 10 DA                       BGE     loc_7D34B998
.text:7D34B976 00 23                       MOVS    R3, #0
.text:7D34B978 1E 4A                       LDR     R2, =(a5eddcc418cda8d - 0x7D34B988)

八:总结
1.该反外挂系统主要有字符串加密保护,客户端完整性检查(CRC+签
名),函数及变量、反调试保护,系统so文件校验, 自身so文件校验,U3D防护,画面截屏保护,内存防修改保护,但是so本身只做了函数名混淆与字符串加密,代码没有做保护处理,逆向起来还是比较容易。
某手游反外挂分析.zip (1 MB, 下载次数: 27)

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发表于 2017-11-1 14:47 来自手机 | 显示全部楼层
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发表于 2017-11-11 23:07 | 显示全部楼层
谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢谢

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发表于 2017-11-1 14:35 | 显示全部楼层

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发表于 2017-11-1 14:58 | 显示全部楼层
禁止求脱求破

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发表于 2017-11-1 15:40 | 显示全部楼层
楼主发的帖子都是精华啊。。

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如何回报帮助你解决问题的坛友,一个好办法就是给对方加【热心】【CB】,加分不会扣除自己的积分,做一个热心并受欢迎的人!

发表于 2017-11-1 17:01 | 显示全部楼层
哇  这个 不发则以一发入魂阿- -顶楼主

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如何回报帮助你解决问题的坛友,一个好办法就是给对方加【热心】【CB】,加分不会扣除自己的积分,做一个热心并受欢迎的人!

发表于 2017-11-1 17:13 | 显示全部楼层
绝壁精品 留个爪 学习了

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如何回报帮助你解决问题的坛友,一个好办法就是给对方加【热心】【CB】,加分不会扣除自己的积分,做一个热心并受欢迎的人!

发表于 2017-11-1 17:22 | 显示全部楼层
先m再看,学习!

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发表于 2017-11-1 17:33 | 显示全部楼层
膜拜大神!!!

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如何回报帮助你解决问题的坛友,一个好办法就是给对方加【热心】【CB】,加分不会扣除自己的积分,做一个热心并受欢迎的人!

发表于 2017-11-1 18:17 | 显示全部楼层
谢谢三哥

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