[CoD4] Code

#include <windows.h>

bool bWallHack=false;
bool bNoRecoil=false;
bool bNameTags=false;

unsigned char *playerFlag = (unsigned char*)0x00445480;
unsigned char xwallhackpatch[2] = { 0x6a, 0x12 }; // push 12, patched
unsigned char owallhackpatch[2];// copy unpatched

unsigned long fireRecoil = (unsigned long)0x00457D2E;
unsigned char oRecoilPatch[5];

unsigned long xTeamcheck = (unsigned long)0x0042E1AC; //Orig 0x0F 0x85 0xCE 0x00 0x00 0x00
unsigned long xVisible = (unsigned long)0x0042E1CE; //Orig 0x74 0x25
unsigned char oTeamCheckPatch[6] = { 0x0F, 0x85, 0xCE, 0x00, 0x00, 0x00 };
unsigned char oVisiblePatch[2] = { 0x74, 0x25 };

void doWallhack(void)
{
	unsigned long orig;
	if(bWallhack==false)
	{
		VirtualProtect(playerFlag, sizeof(xwallhackpatch), PAGE_EXECUTE_READWRITE, &orig);
		memcpy(playerFlag, &xwallhackpatch, sizeof(xwallhackpatch));
		VirtualProtect(playerFlag, sizeof(xwallhackpatch), orig, &orig);
		bWallHack=true;
	}
	else
	{
		VirtualProtect(playerFlag, sizeof(owallhackpatch), PAGE_EXECUTE_READWRITE, &orig);
		memcpy(playerFlag, &owallhackpatch, sizeof(owallhackpatch));
		VirtualProtect(playerFlag, sizeof(owallhackpatch), orig, &orig);
		bWallHack=false;
	}
}

void doNoRecoil(void)
{
	if(bNoRecoil==false)
	{
		//nop 5 bytes @ fireRecoil
		bNoRecoil=true;
	}
	else
	{
		VirtualProtect(fireRecoil, sizeof(oRecoilPatch), PAGE_EXECUTE_READWRITE, &orig);
		memcpy(fireRecoil, &oRecoilPatch, sizeof(oRecoilPatch));
		VirtualProtect(fireRecoil, sizeof(oRecoilPatch), orig, &orig);
		bNoRecoil=false;
	}
}

void doNametags(void)
{
	if(bNameTags==false)
	{
		//nop 6 bytes @ xTeamCheck
		//nop 2 bytes @ xVisible
	}
	else
	{
		VirtualProtect(xTeamcheck, sizeof(oTeamCheckPatch), PAGE_EXECUTE_READWRITE, &orig);
		memcpy(xTeamcheck, &oTeamCheckPatch, sizeof(oTeamCheckPatch));
		VirtualProtect(xTeamcheck, sizeof(oTeamCheckPatch), orig, &orig);
		VirtualProtect(xVisible, sizeof(oVisiblePatch), PAGE_EXECUTE_READWRITE, &orig);
		memcpy(xVisible, &oVisiblePatch, sizeof(oVisiblePatch));
		VirtualProtect(xVisible, sizeof(oVisiblePatch), orig, &orig);
	}
}

void InitBackups(void)
{
	unsigned long orig;
	VirtualProtect(playerFlag, sizeof(owallhackpatch), PAGE_EXECUTE_READWRITE, &orig);
	memcpy(owallhackpatch, playerFlag, sizeof(owallhackpatch));
	VirtualProtect(playerFlag, sizeof(owallhackpatch), orig, &orig);

	VirtualProtect(fireRecoil, sizeof(oRecoilPatch), PAGE_EXECUTE_READWRITE, &orig);
	memcpy(oRecoilPatch, fireRecoil, sizeof(oRecoilPatch));
	VirtualProtect(fireRecoil, sizeof(oRecoilPatch), orig, &orig);
}

void HackThread(void)
{
	InitBackups();
	while(1)
	{
		if(GetAsyncKeyState(VK_NUMPAD0)&1) // Panic key
		{
			DisableAll();
		}
		if(GetAsyncKeyState(VK_NUMPAD1)&1)
		{
			doWallhack();
		}
		if(GetAsyncKeyState(VK_NUMPAD2)&1)
		{
			doNametags();
		}
		if(GetAsyncKeyState(VK_NUMPAD3)&1)
		{
			doNoRecoil();
		}
		Sleep(1);
	}
}

BOOL __stdcall DllMain(HMODULE hinst, DWORD reason, void *useless)
{
	DisableThreadLibraryCalls(hinst);
	if(reason == 1)
	{
		CreateThread(0, 0, (LPTHREAD_START_ROUTINE)HackThread, 0, 0, 0);
	}
	return TRUE;
}