I've been looking into hacking Payday 2, and almost all the important information in the memory of Payday 2 is encrypted and to find values is a matter of searching for changed/unchanged values only.

If you can trace back the op codes to before the real value is encrypted, (using an AOB injection in Cheat Engine for example) then you can safely modify the value. But what if I wanted to create a fully external hack for the game without any injection... is it possible/easy to do so even if all the values are encrypted?