五种常用语言的OEP特征

discheart · 发表于 2012-3-25 13:52

刚学脱壳破解一直被是不是到了OEP所困扰，刚好在CSDN上下了个文件，在此分享给初学脱壳破解的朋友们。有不正对的地方希望大家一起来完善，

要熟记,看到就要认得!
C++  （Microsoft Visual C++ 6.0）
0040577C >/$  55          PUSH EBP             (C的入口)
0040577D  |.  8BEC       MOV EBP,ESP
0040577F  |.  6A FF       PUSH -1
00405781  |.  68 30B24000 PUSH EasyClea.0040B230
00405786  |.  68 84704000 PUSH EasyClea.00407084             ;  SE 句柄安装
0040578B  |.  64:A1 0000000>MOV EAX,DWORD PTR FS:[0]
00405791  |.  50          PUSH EAX
00405792  |.  64:8925 00000>MOV DWORD PTR FS:[0],ESP
00405799  |.  83EC 58    SUB ESP,58
0040579C  |.  53          PUSH EBX
0040579D  |.  56          PUSH ESI
0040579E  |.  57          PUSH EDI
0040579F  |.  8965 E8    MOV [LOCAL.6],ESP
004057A2  |.  FF15 ECB04000 CALL DWORD PTR DS:[<&KERNEL32.GetVersion>;  kernel32.GetVersion
---------------------------------------------------------------------------------------------------------------------------------
E语言
这个和C极度像,要分清
0040389F >/$  55          PUSH EBP
004038A0  |.  8BEC       MOV EBP,ESP
004038A2  |.  6A FF       PUSH -1
004038A4  |.  68 F8724000 PUSH CrackMe.004072F8
004038A9  |.  68 04554000 PUSH CrackMe.00405504                   ;  SE 处理程序安装
004038AE  |.  64:A1 0000000>MOV EAX,DWORD PTR FS:[0]
004038B4  |.  50          PUSH EAX
004038B5  |.  64:8925 00000>MOV DWORD PTR FS:[0],ESP
004038BC  |.  83EC 58    SUB ESP,58
004038BF  |.  53          PUSH EBX
004038C0  |.  56          PUSH ESI
004038C1  |.  57          PUSH EDI
004038C2  |.  8965 E8    MOV DWORD PTR SS:[EBP-18],ESP
004038C5  |.  FF15 48704000 CALL DWORD PTR DS:[<&KERNEL32.GetVersion>;  kernel32.GetVersion
004038CB  |.  33D2       XOR EDX,EDX
004038CD  |.  8AD4       MOV DL,AH
004038CF  |.  8915 94BA4000 MOV DWORD PTR DS:[40BA94],EDX
004038D5  |.  8BC8       MOV ECX,EAX
004038D7  |.  81E1 FF000000 AND ECX,0FF
004038DD  |.  890D 90BA4000 MOV DWORD PTR DS:[40BA90],ECX
004038E3  |.  C1E1 08    SHL ECX,8
004038E6  |.  03CA       ADD ECX,EDX
004038E8  |.  890D 8CBA4000 MOV DWORD PTR DS:[40BA8C],ECX
004038EE  |.  C1E8 10    SHR EAX,10
004038F1  |.  A3 88BA4000 MOV DWORD PTR DS:[40BA88],EAX
004038F6  |.  33F6       XOR ESI,ESI
004038F8  |.  56          PUSH ESI
004038F9  |.  E8 7A030000 CALL CrackMe.00403C78
004038FE  |.  59          POP ECX
004038FF  |.  85C0       TEST EAX,EAX
00403901  |.  75 08       JNZ SHORT CrackMe.0040390B
00403903  |.  6A 1C       PUSH 1C
---------------------------------------------------------------------------------------------------------------------------------
Delphi （Borland Delphi 6.0 - 7.0）
004F2F68 > $  55          PUSH EBP
004F2F69 .  8BEC       MOV EBP,ESP
004F2F6B .  83C4 F0    ADD ESP,-10
004F2F6E .  53          PUSH EBX
004F2F6F .  B8 102B4F00 MOV EAX,Unpacked.004F2B10
004F2F74 .  E8 EF3BF1FF CALL Unpacked.00406B68
004F2F79 .  8B1D F4505000 MOV EBX,DWORD PTR DS:[5050F4]          ;  Unpacked.00506C14
004F2F7F .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2F81 .  E8 56ACF8FF CALL Unpacked.0047DBDC
004F2F86 .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2F88 .  BA F42F4F00 MOV EDX,Unpacked.004F2FF4             ;  ASCII " Hide Private File Pro"
004F2F8D .  E8 32A8F8FF CALL Unpacked.0047D7C4
004F2F92 .  8B0D 904E5000 MOV ECX,DWORD PTR DS:[504E90]          ;  Unpacked.00509144
004F2F98 .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2F9A .  8B15 70E44E00 MOV EDX,DWORD PTR DS:[4EE470]          ;  Unpacked.004EE4BC
004F2FA0 .  E8 4FACF8FF CALL Unpacked.0047DBF4
004F2FA5 .  8B0D 3C525000 MOV ECX,DWORD PTR DS:[50523C]          ;  Unpacked.0050909C
004F2FAB .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2FAD .  8B15 48B14E00 MOV EDX,DWORD PTR DS:[4EB148]          ;  Unpacked.004EB194
004F2FB3 .  E8 3CACF8FF CALL Unpacked.0047DBF4
004F2FB8 .  8B0D 0C535000 MOV ECX,DWORD PTR DS:[50530C]          ;  Unpacked.005090A4
004F2FBE .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2FC0 .  8B15 7CB34E00 MOV EDX,DWORD PTR DS:[4EB37C]          ;  Unpacked.004EB3C8
004F2FC6 .  E8 29ACF8FF CALL Unpacked.0047DBF4
004F2FCB .  8B0D 30505000 MOV ECX,DWORD PTR DS:[505030]          ;  Unpacked.005090D4
004F2FD1 .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2FD3 .  8B15 B0BF4E00 MOV EDX,DWORD PTR DS:[4EBFB0]          ;  Unpacked.004EBFFC
004F2FD9 .  E8 16ACF8FF CALL Unpacked.0047DBF4
004F2FDE .  8B03       MOV EAX,DWORD PTR DS:[EBX]
004F2FE0 .  E8 8FACF8FF CALL Unpacked.0047DC74
004F2FE5 .  5B          POP EBX
004F2FE6 .  E8 7115F1FF CALL Unpacked.0040455C
004F2FEB .  00FF       ADD BH,BH
004F2FED    FF          DB FF
---------------------------------------------------------------------------------------------------------------------------------
VB （Microsoft Visual Basic 5.0 / 6.0）
00410400 >  68 4C744100    PUSH Unpack_.0041744C       ; ASCII "VB5!6&*"
00410405 E8 EEFFFFFF    CALL <JMP.&msvbvm60.ThunRTMain>
0041040A 16             PUSH SS
0041040B 0000          ADD BYTE PTR DS:[EAX],AL
0041040D 0000          ADD BYTE PTR DS:[EAX],AL
0041040F 0030          ADD BYTE PTR DS:[EAX],DH
00410411 0000          ADD BYTE PTR DS:[EAX],AL
00410413 0038          ADD BYTE PTR DS:[EAX],BH
00410415 0000          ADD BYTE PTR DS:[EAX],AL
00410417 0000          ADD BYTE PTR DS:[EAX],AL
00410419 0000          ADD BYTE PTR DS:[EAX],AL
0041041B 0060 9C       ADD BYTE PTR DS:[EAX-64],AH
0041041E F0:E2 CF       LOCK LOOPD SHORT Unpack_.004103F0       ; 不允许锁定前缀
00410421 BE 3D439505    MOV ESI,595433D
00410426 E1 06          LOOPDE SHORT Unpack_.0041042E
00410428 18A5 05D40000 SBB BYTE PTR SS:[EBP+D405],AH
0041042E 0000          ADD BYTE PTR DS:[EAX],AL
00410430 0000          ADD BYTE PTR DS:[EAX],AL
00410432 0100          ADD DWORD PTR DS:[EAX],EAX
00410434 0000          ADD BYTE PTR DS:[EAX],AL
00410436 9E             SAHF
---------------------------------------------------------------------------------------------------------------------------------
BC++  （Borland C++ 1999）
00401000 > /EB 10          JMP SHORTXXXXXXX.00401012
00401002 |66:623A       BOUND DI,DWORD PTR DS:[EDX]
00401005 |43             INC EBX
00401006 |2B2B          SUB EBP,DWORD PTR DS:[EBX]
00401008 |48             DEC EAX
00401009 |4F             DEC EDI
0040100A |4F             DEC EDI
0040100B |4B             DEC EBX
0040100C |90             NOP
0040100D  -|E9 AC334800    JMP 008843BE
00401012 \A1 9F334800    MOV EAX,DWORD PTR DS:[48339F]
00401017 C1E0 02       SHL EAX,2
0040101A A3 A3334800    MOV DWORD PTR DS:[4833A3],EAX
0040101F 52             PUSH EDX
00401020 6A 00          PUSH 0
00401022 E8 11110800    CALL <JMP.&KERNEL32.GetModuleHandleA>
00401027 8BD0          MOV EDX,EAX
00401029 E8 3A1B0600    CALLXXXXXXX.00462B68
0040102E 5A             POP EDX
0040102F E8 981A0600    CALLXXXXXXX.00462ACC
00401034 E8 6F1B0600    CALLXXXXXXX.00462BA8
00401039 6A 00          PUSH 0
0040103B E8 782E0600    CALLXXXXXXX.00463EB8
00401040 59             POP ECX
00401041 68 48334800    PUSHXXXXXXX.00483348
00401046 6A 00          PUSH 0
00401048 E8 EB100800    CALL <JMP.&KERNEL32.GetModuleHandleA>
0040104D A3 A7334800    MOV DWORD PTR DS:[4833A7],EAX
00401052 6A 00          PUSH 0
00401054 E9 6B900600    JMPXXXXXXX.0046A0C4
00401059 >  E9 A62E0600    JMPXXXXXXX.00463F04

---------------------------------------------------------------------------------------------------------------------------------
Dasm:汇编
00401000 >/$  6A 00       PUSH 0                                  ; /pModule = NULL
00401002  |.  E8 C50A0000 CALL <JMP.&KERNEL32.GetModuleHandleA> ; \GetModuleHandleA
00401007  |.  A3 0C354000 MOV DWORD PTR DS:[40350C],EAX
0040100C  |.  E8 B50A0000 CALL <JMP.&KERNEL32.GetCommandLineA>    ; [GetCommandLineA
00401011  |.  A3 10354000 MOV DWORD PTR DS:[403510],EAX
00401016  |.  6A 0A       PUSH 0A                               ; /Arg4 = 0000000A
00401018  |.  FF35 10354000 PUSH DWORD PTR DS:[403510]             ; |Arg3 = 00000000
0040101E  |.  6A 00       PUSH 0                                  ; |Arg2 = 00000000
00401020  |.  FF35 0C354000 PUSH DWORD PTR DS:[40350C]             ; |Arg1 = 00000000
另一种：
00401025 >/$  6A F6          PUSH -0A
00401027  |.  E8 A0000000    CALL <JMP.&kernel32.GetStdHandle>
0040102C  |.  A3 00304000    MOV DWORD PTR DS:[403000],EAX
00401031  |.  6A F5             PUSH -0B
00401033  |.  E8 94000000    CALL <JMP.&kernel32.GetStdHandle>
00401038  |.  A3 04304000    MOV DWORD PTR DS:[403004],EAX
0040103D  |.  6A 01             PUSH 1
0040103F  |.  68 00104000    PUSH EchoLine.00401000
00401044  |.  E8 8F000000    CALL <JMP.&kernel32.SetConsoleCtrlHandle>
00401049  |.  6A 07             PUSH 7
0040104B  |.  FF35 00304000 PUSH DWORD PTR DS:[403000]

4957465 · 发表于 2012-3-25 13:58

太复杂了，，不懂，，

飞龙使者 · 发表于 2012-3-25 13:59

还有一个VC++8.0的

00403A30 > $  E8 6E270000   call VC8.004061A3
00403A35   .^ E9 79FEFFFF   jmp VC8.004038B3
00403A3A  /$  55            push ebp
00403A3B  |.  8BEC          mov ebp,esp
00403A3D  |.  83EC 08       sub esp,0x8
00403A40  |.  897D FC       mov [local.1],edi                        ;  ntdll.7C930228
00403A43  |.  8975 F8       mov [local.2],esi
00403A46  |.  8B75 0C       mov esi,[arg.2]
00403A49  |.  8B7D 08       mov edi,[arg.1]                          ;  VC8.<ModuleEntryPoint>
00403A4C  |.  8B4D 10       mov ecx,[arg.3]
00403A4F  |.  C1E9 07       shr ecx,0x7

wxc6688 · 发表于 2012-3-25 14:17

应该比较简单

76840041 · 发表于 2012-3-25 14:25

看不懂！！！！！！！

淡然出尘 · 发表于 2012-3-30 10:49

保存了，谢谢、

manbobo · 发表于 2012-3-30 22:03

MARK~~

pking5465 · 发表于 2012-3-31 10:24

这些多破就知道了现在正在进修中... 学习了

zlm110 · 发表于 2012-4-1 13:45

说声谢谢不算灌水吧？初学无罪

气煞山河 · 发表于 2012-4-3 17:00

不太明白．．．．

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[分享] 五种常用语言的OEP特征

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