Modding a license key apk

[Kira0640]

Hello everyone! Im using a "bot" for an mmorpg... this bot is an apk and doesnt modify the main game. Next month it will not be free anymore and they will charge insane amount of money to use it.
The type of protection will be a licence key.
I dont need future updates so : would it be possible to bypass this licence key and make a "mod apk" of this type of application?
What should i start learning to be able to solve this task, if this is even possible!

tnx everyone for the replyes

 

[0x90]

You'd have to analyze the apk both statically and dynamically and reverse their whole authentication system, even if you do this, the apk might just download the files it needs only when you log in (only if you have a valid active user, checked against their server), and even if you got around all this, they might still have a heartbeat to re-validate their auth. They could also be packing the apk, obfuscating it, doing crc checks and a lot more.

You should start modding simpler apks (you can make your own apks and reverse them, that would be quicker, or try modding games) and at least have a basic knowledge about arm architecture (the instructions, what's a stack, function calling conventions, stack frames, etc) because you will be needing it when you are either doing dynamic or static analysis.