#include <windows.h>

void SomeFunction(const LPCSTR sometext);

#include "main.h"

void SomeFunction(const LPCSTR sometext)
{
   MessageBoxA(0, sometext, "Message from DLL", MB_OK | MB_ICONINFORMATION);
}

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
   switch (fdwReason)
   {
       case DLL_PROCESS_ATTACH:
           // attach to process
           // return FALSE to fail DLL load
           SomeFunction("I just injected into our game oh em gee");
           break;

       case DLL_PROCESS_DETACH:
           // detach from process
           break;

       case DLL_THREAD_ATTACH:
           // attach to thread
           break;

       case DLL_THREAD_DETACH:
           // detach from thread
           break;
   }
   return TRUE; // succesful
}

#include <Windows.h>
#include <TlHelp32.h>
#include <stdio.h>

#define CREATE_THREAD_ACCESS (PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_VM_READ)

char FileToInject[] = "GameHack.dll";
char ProcessName[]  = "Game.exe";
char dllPath[255]   = "C:\\Users\\abduct\\Dekstop\\HACKS\\Test\\";
typedef HINSTANCE (*fpLoadLibrary)(char*);

BOOL InjectDLL(DWORD ProcessID);

int main()
{
   DWORD processId = 0;

   PROCESSENTRY32 pe32 = {sizeof(PROCESSENTRY32)};
   HANDLE hProcSnap;

   while(!processId)
   {
       system("cls");

       printf("Searching for: %s\n", ProcessName );
       printf("Make sure your game is running\n");

       hProcSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

       if(Process32First(hProcSnap, &pe32))
       {
           do
           {
               if(!strcmp(pe32.szExeFile, ProcessName))
               {
                   processId = pe32.th32ProcessID;
                   break;
               }
           }while(Process32Next(hProcSnap, &pe32));
       }
       Sleep(1000);
   }

   while(!InjectDLL(processId))
   {
       system("cls");
       printf("DLL Failed To Inject\n");
       Sleep(1000);
   }

   printf("DLL Injected successfully\n");
   printf("Closing Injector in 5 seconds");

   CloseHandle(hProcSnap);

   Sleep(5000);

   return 0;
}

BOOL InjectDLL(DWORD ProcessID)
{
   HANDLE hProc;
   LPVOID paramAddr;
   HINSTANCE hDLL = LoadLibraryA("KERNEL32");
   fpLoadLibrary LoadLibraryAddr = (fpLoadLibrary)GetProcAddress(hDLL, "LoadLibraryA");

   hProc = OpenProcess(CREATE_THREAD_ACCESS, FALSE, ProcessID);

   strcat(dllPath, FileToInject);

   paramAddr = VirtualAllocEx(hProc, 0, strlen(dllPath) + 1, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
   BOOL memoryWritten = WriteProcessMemory(hProc, paramAddr, dllPath, strlen(dllPath) +1, NULL);

   CreateRemoteThread(hProc, 0, 0, (LPTHREAD_START_ROUTINE)LoadLibraryAddr, paramAddr, 0, 0);
   CloseHandle(hProc);

   return memoryWritten;
}

#-mwindows -> removes console window
#-ld3d9 -> required for directx9

test: main.exe
 wine main.exe
main.exe: main.cpp
 i586-mingw32msvc-g++ -o main.exe main.cpp -ld3d9 -mwindows
clean:
 rm -f main.exe

sudo apt-get install mingw32 mingw32-runtime mingw32-binutils