Last December I wrote a blog post explaining how some of the AU2 dance games were protected. Apparently, the protection author read the blog post and updated his protection. smile This blog post will explain how the protection was changed and suggest several ways of dealing with the new features.

This analysis covers:

• AU2 Mobile(EN)-Lovely Babies
• AU2 Mobile-ID

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Today's story is about dancing games. Specifically, about

Au 2 - Chuẩn Style Audition - VTC Game

AU2 Mobile-EN

These games employ some tricks in the APK file structure as well as modified libmono.so. I will go through each of the protection mechanisms step-by-step and explain how it works. In the end, you will have all the necessary information to implement your own decryption tool that can decrypt AU2 protected DLL files.

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