// Inject the dll with by creating a remote thread on LoadLibraryW
public void Inject(Process p)
{
Kernel32.SafeHPROCESS proc = Kernel32.OpenProcess(new ACCESS_MASK(Kernel32.ProcessAccess.PROCESS_ALL_ACCESS), false, (uint)p.Id);
if (!proc.IsNull && !proc.IsInvalid)
{
IntPtr loadLib = Kernel32.GetProcAddress(Kernel32.LoadLibrary("kernel32.dll"), "LoadLibraryW");
if (loadLib == IntPtr.Zero)
{
Console.WriteLine("LoadLibaryW not found");
return;
}
byte[] DllPathBytes = DllPath.GetBytes(true, CharSet.Unicode); // Unicode for wide chars
IntPtr alloc = Kernel32.VirtualAllocEx(proc, IntPtr.Zero, DllPathBytes.Length, Kernel32.MEM_ALLOCATION_TYPE.MEM_COMMIT, Kernel32.MEM_PROTECTION.PAGE_EXECUTE_READWRITE);
if (alloc == IntPtr.Zero)
{
Console.WriteLine("Couldn't allocate");
return;
}
if (!Kernel32.WriteProcessMemory(proc, alloc, DllPathBytes, DllPathBytes.Length, out _))
{
Console.WriteLine("Couldn't write " + Kernel32.GetLastError());
return;
}
Kernel32.SafeHTHREAD thread = Kernel32.CreateRemoteThread(proc, null, 0, loadLib, alloc, 0, out _);
if (!thread.IsNull && !thread.IsInvalid)
{
Console.WriteLine("Injected!");
Kernel32.WaitForSingleObject(thread, Kernel32.INFINITE); // Wait until the dll is injected, so the path can be freed later
thread.Close();
}
Kernel32.VirtualFreeEx(proc, alloc, 0, Kernel32.MEM_ALLOCATION_TYPE.MEM_RELEASE); // Free path from the target's memory (alloc's existence is ensured above)
}
proc.Close();
}
internal static void Thread_Wait(Kernel32.SafeHTHREAD /*Thread*/ thread, out uint /*ThreadStatus*/ status)
{
Kernel32.WaitForSingleObject(thread, Kernel32.INFINITE);
Kernel32.GetExitCodeThread(thread, out status);
Kernel32.CloseHandle(thread.DangerousGetHandle());
}