Question

im trying to learn to modify games in C++ not the game just the memory its using to get ammo whatnot so can someone point me to books

Answer 1

The most convenient way to manipulate a remote process’ memory is to create a thread within the context of that program. This is usually accomplished by forcibly injecting a dll into the target process. Once you have code executing inside the target application you are free to use standard memory routines. e.g (memcpy, malloc, memset).

I can tell you right now that the most convenient and easy to implement method is the CreateRemoteThread / LoadLibrary trick.

As other people have mentioned, simple hacks can be performed by scanning memory for known values. But if you want to perform anything more advanced you will need to look into debugging and dead-list analysis. (Tools: ollydbg and IDA pro, respectively).

You have scratched the surface of a very expansive hacking topic, there is a wealth of knowledge out there..

First a few internet resources:

gamedeception.net – A community dedicated to game RE (Reverse Engineering) and hacking.

http://www.edgeofnowhere.cc/viewtopic.php?p=2483118 – An excellent tutorial on various DLL injection methods.

Openrce.org – Community for reverse code engineering.

I can also recommend a book to you – http://www.exploitingonlinegames.com/

Windows API Routines you should research (msdn.com):

CreateRemoteThread LoadLibraryA VirtualAllocEx VirtualProtectEx WriteProcessMemory ReadProcessMemory CreateToolhelp32Snapshot Process32First Process32Next