Intro;
In this tut I'll try to explain how Winlicense checks if the app has been
tampered with and how to patch it.
The checking;
Winlicense his anti patching procedure only holds an simple checksum check, it
uses imagehlp.CheckSumMappedFile to compute this checksum and then compares it
to the one stored by Winlicense and if it isn't the same it fails.