Some time ago I found this app called "GameCih" which lets you modify values of some of your games. Now I was wondering - like the title is already saying - how this app gets access to the mobile's memory.
I have not developed anything like GameCih, but I do know a little bit on how it works.
Explanation :
Scanning and Editing Android App Memory Values Programmatically
Basically it is more towards assembly language, flag controls, etc on the memory in Android with NDK, so that you could use native languages like C++ to modify / read / write .