Memory Hacking with C and CheatEngine, writing to Process Memory

Grooguz · 2011-12-13, 09:25 AM

Learn to create a trainer (a program that writes to remote process memory) in C++ using a Calculator as an example. There are also references to cheat engine.

Source Code

#include <iostream>

#include <windows.h>

 

// FindWindow();

// GetWindowThreadProcessId();

// OpenProcess();

 

// WriteProcessMemory();

 

// CloseHandle();

 

using namespace std;

 

int main()

{

    int newValue = 500;

 

    HWND hWnd = FindWindow(0, "Calculator");

 

    if (hWnd == 0) {

        cerr << "Cannot find window." << endl;

    } else {

        DWORD pId;

        GetWindowThreadProcessId(hWnd, &pId);

        HANDLE hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pId);

 

        if (!hProc) {

            cerr << "Cannot open process." << endl;

        } else {

            int isSuccessful = WriteProcessMemory(hProc, (LPVOID)0x000AFCC4, &newValue, (DWORD)sizeof(newValue), NULL);

 

            if (isSuccessful > 0) {

                clog << "Process memory written." << endl;

            } else {

                cerr << "Cannot write process memory." << endl;

            }

 

            CloseHandle(hProc);

        }

    }

 

    return 0;

}

by Hero

sh1ft · 2011-12-25, 10:39 AM

I had try to hack my hp in online games before.The hp is 100 and I hacked its to 1000 but the hp still decrease like a normal hp.For example if someone hit me1k damage its will decrease half of my hp (100) but the same goes to my hacked hp (1000).

My question is does the number only virtual ( I mean only an image, nothing more )?

Or can the hp actually be hacked with the amount of number we want?

Btw,im using both C++(noob programmer) and Cheat Engine.

annnnndre · 2011-12-25, 12:11 PM

AWESOME VIDEO! I have download then on max resolution and already watch; I learn a lot with this; thanks!

stdio.h · 2012-06-28, 10:40 AM

That was a great tutorial; Thank you very much for the link.
That's the most informative video I have seen on this topic. Are you the maker of the video? I've subscribed anyway. Oh, and I turned it into C code, as it looks better imo.

Code:

#include <stdio.h>
#include <windows.h>

int main()
{
    int newValue = 500;
    HWND hWnd = FindWindow(0, "Calculator");

    if (hWnd == 0) {
        fprintf(stderr, "Cannot find window.");
    } else {
        DWORD pId;
        GetWindowThreadProcessId(hWnd, &pId);
        HANDLE hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pId);

        if (!hProc) {
            fprintf(stderr, "Cannot open process.");
        } else {
            int isSuccessful = WriteProcessMemory(hProc, (LPVOID)0x000AFCC4, &newValue, (DWORD)sizeof(newValue), NULL);

            if (isSuccessful > 0) {
                puts("Process memory written.");
            } else {
                fprintf(stderr, "Cannot write process memory.");
            }

            CloseHandle(hProc);
        }
    }
    getchar();
    return 0;
}

Schoktra · 2013-06-30, 12:30 PM

Okay, I've followed this tutorial and wrote to a memory location and was quite elated. Then I close process, and open a new process for calculator and tried to run the program again which then it fails to write the memory. How can we change this code to make it always work? Like find memory address of start of program + the offset in the program memory so that it will always work even if we close and reopen the program many times? Otherwise if we use this to try to make game trainer it will only work the first time we run the game and no other time.

reehfilho · 2013-10-11, 03:40 AM

Very good guy, was exactly what I needed, I was confused by a lot more already gave it to lighten

------------------------------------------------------------

CAra muito bom, era exatamente o que eu precisava, tava confuso com muita coisa, mais ja deu pra clarear

lanceaurion · 2013-10-11, 04:04 AM

what programs are you using Grooguz ?

agescop · 2013-10-12, 08:15 PM

Thanks be congratulated'll test here

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