- Game Name
- Assault Cube
- Anticheat
- none
- How long you been coding/hacking?
- 5 years
- Coding Language
- C++
Learn how to render text, draw rectangles and outlines in an OpenGL Swap Buffers hook.
The goal of this video tutorial is to teach you how to do this in an OpenGL Hook:
We won't be making an ESP itself, just all the rendering stuff you need to make one and how to make the box itself.
The previous video teaches you how to hook SwapBuffers: Source Code - Simple x86 C++ Trampoline Hook
This video will build upon that, if you're following along, make sure you do the previous video first.
We will make a hook class, teach you how to draw in OpenGL with filled rectangles, outline rectangles & text. Special thank you to @c5 for sharing his OpenGL Font class which this is based on.
OpenGL Hooking, Drawing & Text Rendering Tutorial
dllmain.cpp looks like this:
We have a complete guide to OpenGL here
Guide - How to get started with OpenGL Hacks
Previous Video
After you do this video, do the next one:
Full project in the attachment
The goal of this video tutorial is to teach you how to do this in an OpenGL Hook:
We won't be making an ESP itself, just all the rendering stuff you need to make one and how to make the box itself.
The previous video teaches you how to hook SwapBuffers: Source Code - Simple x86 C++ Trampoline Hook
This video will build upon that, if you're following along, make sure you do the previous video first.
We will make a hook class, teach you how to draw in OpenGL with filled rectangles, outline rectangles & text. Special thank you to @c5 for sharing his OpenGL Font class which this is based on.
OpenGL Hooking, Drawing & Text Rendering Tutorial
dllmain.cpp looks like this:
C++:
#include "stdafx.h"
#include <iostream>
#include "mem.h"
#include "hook.h"
#include "glDraw.h"
#include "gltext.h"
//https://guidedhacking.com/threads/opengl-hooking-drawing-text-rendering.14460/
uintptr_t moduleBase = (uintptr_t)GetModuleHandle(L"ac_client.exe");
bool bHealth = false, bAmmo = false, bRecoil = false;
typedef BOOL(__stdcall* twglSwapBuffers) (HDC hDc);
twglSwapBuffers owglSwapBuffers;
twglSwapBuffers wglSwapBuffersGateway;
GL::Font glFont;
const int FONT_HEIGHT = 15;
const int FONT_WIDTH = 9;
const char* example = "ESP Box";
const char* example2 = "I'm inside fam";
void Draw()
{
HDC currentHDC = wglGetCurrentDC();
if (!glFont.bBuilt || currentHDC != glFont.hdc)
{
glFont.Build(FONT_HEIGHT);
}
GL::SetupOrtho();
GL::DrawOutline(300, 300, 200, 200, 2.0f, rgb::red);
float textPointX = glFont.centerText(300, 200, strlen(example) * FONT_WIDTH);
float textPointY = 300 - FONT_HEIGHT / 2;
glFont.Print(textPointX, textPointY, rgb::green, "%s", example);
vec3 insideTextPoint = glFont.centerText(300, 300 + 100, 200, 200, strlen(example2) * FONT_WIDTH, FONT_HEIGHT);
glFont.Print(insideTextPoint.x, insideTextPoint.y, rgb::green, "%s", example2);
GL::RestoreGL();
}
BOOL __stdcall hkwglSwapBuffers(HDC hDc)
{
if (GetAsyncKeyState(VK_NUMPAD1) & 1)
bHealth = !bHealth;
if (GetAsyncKeyState(VK_NUMPAD2) & 1)
{
bAmmo = !bAmmo;
}
//no recoil NOP
if (GetAsyncKeyState(VK_NUMPAD3) & 1)
{
bRecoil = !bRecoil;
if (bRecoil)
{
mem::Nop((BYTE*)(moduleBase + 0x63786), 10);
}
else
{
//50 8D 4C 24 1C 51 8B CE FF D2 the original stack setup and call
mem::Patch((BYTE*)(moduleBase + 0x63786), (BYTE*)"\x50\x8D\x4C\x24\x1C\x51\x8B\xCE\xFF\xD2", 10);
}
}
//need to use uintptr_t for pointer arithmetic later
uintptr_t* localPlayerPtr = (uintptr_t*)(moduleBase + 0x10F4F4);
//continuous writes / freeze
if (localPlayerPtr)
{
if (bHealth)
{
*(int*)(*localPlayerPtr + 0xF8) = 1337;
}
if (bAmmo)
{
*(int*)mem::FindDMAAddy(moduleBase + 0x10F4F4, { 0x374, 0x14, 0x0 }) = 1337;
}
}
Draw();
return wglSwapBuffersGateway(hDc);
}
DWORD WINAPI HackThread(HMODULE hModule)
{
//Create Console
AllocConsole();
FILE* f;
freopen_s(&f, "CONOUT$", "w", stdout);
std::cout << "OG for a fee, stay sippin' fam\n";
// Hook
Hook SwapBuffersHook("wglSwapBuffers", "opengl32.dll", (BYTE*)hkwglSwapBuffers, (BYTE*)&wglSwapBuffersGateway, 5);
SwapBuffersHook.Enable();
//Sleep(10000);
//SwapBuffersHook.Disable();
//
fclose(f);
FreeConsole();
FreeLibraryAndExitThread(hModule, 0);
return 0;
}
BOOL APIENTRY DllMain(HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
CloseHandle(CreateThread(nullptr, 0, (LPTHREAD_START_ROUTINE)HackThread, hModule, 0, nullptr));
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}Guide - How to get started with OpenGL Hacks
Previous Video
After you do this video, do the next one:
Full project in the attachment
Last edited:
