main.cpp -> 0xSA

/*
    0xSA
    By Michael
    _________________

    Date: 08.02.2010
    Time: 16:11
    _________________

    http://forum.sa-mp.de
*/

// Includes

#include <Windows.h>
#include <cstdio>
#include <d3d9.h>
#include <d3dx9.h>
#include "menu.h"

// Pragma

#pragma once
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "d3dx9.lib")

// Declarations

CD3DMenu menu(10, 40, 300, 500, "0xSA", VK_INSERT, L"Arial") ;

MENU_ENTRY health ;
MENU_ENTRY armor ;
MENU_ENTRY money ;

typedef HRESULT(__stdcall* tEndScene)(LPDIRECT3DDEVICE9) ;

tEndScene pEndScene ;

DWORD dwEndScene ;

int firstrun = 1 ;

// Functions

void *DetourFunc(BYTE *src, const BYTE *dst, const int len) {
    BYTE *jmp = (BYTE*)malloc(len+5) ;
    DWORD dwback ;

    VirtualProtect(src, len, PAGE_READWRITE, &dwback) ;
    memcpy(jmp, src, len); jmp += len ;
    jmp[0] = 0xE9 ;
    *(DWORD*)(jmp+1) = (DWORD)(src+len - jmp) - 5 ;
    src[0] = 0xE9 ;
    *(DWORD*)(src+1) = (DWORD)(dst - src) - 5 ;
    VirtualProtect(src, len, dwback, &dwback) ;

    return (jmp-len) ;
}

bool bDataCompare(const BYTE* pData, const BYTE* bMask, const char* szMask) {
    for(;*szMask;++szMask, ++pData, ++bMask)
    if(*szMask=='x' && *pData != *bMask )
    return false ;
    return (*szMask) == NULL ;
}

DWORD dwFindPattern(DWORD dwAddress, DWORD dwLen, BYTE *bMask, char * szMask) {
    for(DWORD i=0; i < dwLen; i++)
    if(bDataCompare((BYTE*)(dwAddress+i), bMask, szMask))
    return (DWORD)(dwAddress+i) ;
    return 0 ;
}

// Hooks

HRESULT __stdcall hkEndScene(LPDIRECT3DDEVICE9 pDevice) {
    if(firstrun != 0) {
         menu.init(pDevice) ;

        health = menu.addMenuPointBool("Unl. HP", false) ;
        armor = menu.addMenuPointBool("Unl. Armor", false) ;
        money = menu.addMenuPointBool("Unl. Money", false) ;

        firstrun = 0 ;
    }

    if(menu.entrys[health].valBool == true) {
        *(float*)(*(DWORD*)0xB6F5F0 + 0x540) = 100.0f ;
    }

    if(menu.entrys[armor].valBool == true) {
        *(float*)(*(DWORD*)0xB6F5F0 + 0x548) = 100.0f ;
    }

    if(menu.entrys[money].valBool == true) {
        *(DWORD*)0xB7CE50 = 999999999 ;
    }

    menu.heartbeat() ;

    return pEndScene(pDevice) ;
}

// Initialise

void Init() {
    HMODULE hmodule = NULL ;

    while(!hmodule) {
        hmodule = GetModuleHandleA("d3d9.dll") ;
        Sleep(100) ;
    }

    DWORD* VTableStart = 0;
    DWORD FoundPointer = dwFindPattern((DWORD)hmodule, 0x128000, (PBYTE)"\xC7\x06\x00\x00\x00\x00\x89\x86\x00\x00\x00\x00\x89\x86", "xx????xx????xx") ;

    memcpy(&VTableStart, (void*)(FoundPointer+2), 4) ;

    dwEndScene = (DWORD)VTableStart[42] ;
    pEndScene = (tEndScene)DetourFunc((PBYTE) dwEndScene, (PBYTE)hkEndScene, 5) ;
}

int WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) {
    switch(reason) {
    case DLL_PROCESS_ATTACH:
        CreateThread(0, 0, (LPTHREAD_START_ROUTINE) Init, 0, 0, 0) ;
        break ;
    }
}