Cheat Engine :: View topic - [SOLVED] Make a process call a function

Cheat Engine
The Official Site of Cheat Engine

FAQ

Memberlist

Usergroups

Profile

[SOLVED] Make a process call a function

Cheat Engine Forum Index -> General Gamehacking

View previous topic :: View next topic

Author

Message

aeree
Cheater

Reputation: 3

Joined: 23 Jan 2010
Posts: 42
Location: Germany

Posted: Thu Oct 10, 2013 8:32 am Post subject: [SOLVED] Make a process call a function

I'm trying to make Counter-Strike Source call the Msg() function which displays text in the console.

Is it possible for an external hack to make the game call this function?

If not are there any alternatives?

EDIT: Ok I figured it out myself. It is a dll tho..

Code:

#include <Windows.h>

DWORD Msg = NULL;

void MsgA(char* foo)
{
_asm{
   pushad
   pushfd

      push foo
      call Msg
      pop eax

   popfd
   popad
}

}

DWORD WINAPI Thread(LPVOID nothing)
{
MessageBoxA(0,"Injected","Yay",0);

Msg = (DWORD)GetModuleHandle("tier0.dll") + 0x3200;

while(1)
{
   if(GetAsyncKeyState('X'))
   {
      MsgA("test\n");
   }

}

}

void Message()
{
MessageBoxA(0,"Quit game","done",0);
}

BOOL WINAPI DllMain(HINSTANCE Hinst, DWORD Reason, LPVOID Somethingelse)
{
switch(Reason)
{
case DLL_PROCESS_ATTACH:
   CreateThread(0,0,Thread,0,0,0);
case DLL_PROCESS_DETACH:
   Message();
}

return 1;
}

I got the address of the module containing the function + the offset to the function. after that i simply created MsgA using inline assembly to call the function.

It works very well Very Happy

_________________

1 + 1 =

Display posts from previous:

	Cheat Engine Forum Index -> General Gamehacking	All times are GMT - 6 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum