I was playing one mobile game for some time and one day I wanted to check how something is done in this game. That day I didn’t know that my curiosity will start long adventure full of interesting discoveries. And I decided to share it as whole thing was quite interesting and surprising (at least for me).

As everybody knows applications for Android are supplied in form of single file with APK extension and it is actually zip file. And my initial thought was extract content of APK file and check it. Quick search revealed many sites that have APK file for that game. So, I downloaded it and extracted. Then was first surprise. Pretty much everything interesting was encrypted.