[Tutorial] Membuat File Dll Injection (C++)

#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>
#include <tlhelp32.h>

// definisikan variable dengan 'window title', 'window classname' dan modul
char *pProcessWindowTitle = "Point Blank";
char *pProcessWindowClass = "I3VIEWER";
char *pProcessModuleName = "PointBlank.i3Exec";

// etc...
UINT_PTR uipUserRankValue = 35; // major?
UINT_PTR uipUserPointsValue = 999999; // OMG!

UINT_PTR uiptrFinalRank, uiptrFinalPoints;

bool isInitMmhMemory = true;

DWORD dwProcessID;
UINT_PTR uipMmhBaseAddress;
HANDLE hProcess;

DWORD GetModuleBase(LPSTR lpModuleName, DWORD dwProcessId)
{
MODULEENTRY32 lpModuleEntry = {0};
HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, dwProcessId);

if(!hSnapShot)
return NULL;
lpModuleEntry.dwSize = sizeof(lpModuleEntry);
BOOL bModule = Module32First( hSnapShot, &lpModuleEntry );
while(bModule)
{
if(!strcmp( lpModuleEntry.szModule, lpModuleName ) )
{
CloseHandle(hSnapShot);
return (DWORD)lpModuleEntry.modBaseAddr;
}
bModule = Module32Next( hSnapShot, &lpModuleEntry );
}
CloseHandle( hSnapShot );
return NULL;
}

// DeRef() = credit L. Spiro (MHS)
UINT_PTR DeRef( UINT_PTR _uiptrPointer ) {
UINT_PTR uiptrRet;
if (!::ReadProcessMemory(hProcess, reinterpret_cast<LPVOID>(_uiptrPointer), &uiptrRet, sizeof(uiptrRet), NULL)) { return 0UL; }
return uiptrRet;
}

// inisialisasi proses
void InitApplicationProcess()
{
bool isFindWindow = true;
HWND hWnd = NULL;

while(isFindWindow)
{
if((hWnd = FindWindowA(pProcessWindowClass, pProcessWindowTitle)) != NULL) // jika window ditemukan
{
isFindWindow = false;
}
Sleep(500);
}

GetWindowThreadProcessId(hWnd, &dwProcessID);
hProcess = OpenProcess(PROCESS_ALL_ACCESS|PROCESS_VM_OPERATION|PROCESS_VM_READ|PROCESS_VM_WRITE|PROCESS_QUERY_INFORMATION, FALSE, dwProcessID);
}

void MajorMissionHack()
{
if(isInitMmhMemory)
{
uipMmhBaseAddress = GetModuleBase(pProcessModuleName, dwProcessID);

// misal: pointer yang didapat = PointBlank.i3Exec+00471234 dengan offset 0xA12, tuliskan seperti di bawah!
uiptrFinalRank = DeRef(uipMmhBaseAddress + 0x4XXXXX) + 0xXXX; // User rank pointer - masked, sorry!
uiptrFinalPoints = DeRef(uipMmhBaseAddress + 0x4XXXXX) + 0xXXX; // User points pointer - masked, sorry!

isInitMmhMemory = false;
}

// WriteProcessMemory pada pointer 'rank', berikan nilai uipUserRankValue (35)
::WriteProcessMemory(hProcess, reinterpret_cast<LPVOID>(uiptrFinalRank), &uipUserRankValue, sizeof(uipUserRankValue), NULL);

// WriteProcessMemory pada pointer 'points', berikan nilai uipUserPointsValue (999999) LOL!
::WriteProcessMemory(hProcess, reinterpret_cast<LPVOID>(uiptrFinalPoints), &uipUserPointsValue, sizeof(uipUserPointsValue), NULL);
}

void LovelyLoopy()
{
// ok, berikan salam dulu!
MessageBox(0, "DLL berhasil di-inject. Lanjutkan!", "Hello World", MB_OK + MB_ICONASTERISK);

InitApplicationProcess();

while(1) // loop selamanya
{
if(GetAsyncKeyState(VK_F12)&1) // jika F12 ditekan
{
MajorMissionHack(); // panggil fungsi 'MajorMissionHack()'
Sleep(500);
}

Sleep(1);
}
}

BOOL WINAPI DllMain(HMODULE hDll, DWORD dwReason, LPVOID lpReserved)
{
DisableThreadLibraryCalls(hDll);

if(dwReason == DLL_PROCESS_ATTACH)
{
CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)LovelyLoopy, NULL, NULL, NULL);
}
else if(dwReason == DLL_PROCESS_DETACH)
{
CloseHandle(hProcess);
}

return TRUE;
}