/// <summary>
/// Injects a dll into a process by creating a remote thread on LoadLibrary.
/// </summary>
/// <param name="hProcess">Handle to the process into which dll will be injected.</param>
/// <param name="szDllPath">Full path of the dll that will be injected.</param>
/// <returns>Returns the base address of the injected dll on success, zero on failure.</returns>
public static uint InjectDllCreateThread(IntPtr hProcess, string szDllPath)
{
if (hProcess == IntPtr.Zero)
{
throw new ArgumentNullException("hProcess");
}
if (szDllPath.Length == 0)
{
throw new ArgumentNullException("szDllPath");
}
if (!szDllPath.Contains("\\"))
{
szDllPath = System.IO.Path.GetFullPath(szDllPath);
}
if (!System.IO.File.Exists(szDllPath))
{
throw new ArgumentException("DLL not found.", "szDllPath");
}
uint dwBaseAddress = RETURN_ERROR;
uint lpLoadLibrary;
uint lpDll;
IntPtr hThread;
lpLoadLibrary = (uint)Imports.GetProcAddress(Imports.GetModuleHandle("kernel32.dll"), "LoadLibraryA");
if (lpLoadLibrary > 0)
{
lpDll = SMemory.AllocateMemory(hProcess);
if (lpDll > 0)
{
if (SMemory.WriteASCIIString(hProcess, lpDll, szDllPath))
{
hThread = SThread.CreateRemoteThread(hProcess, lpLoadLibrary, lpDll);
//wait for thread handle to have signaled state
//exit code will be equal to the base address of the dll
if (SThread.WaitForSingleObject(hThread, 5000) == WaitValues.WAIT_OBJECT_0)
{
dwBaseAddress = SThread.GetExitCodeThread(hThread);
}
Imports.CloseHandle(hThread);
}
SMemory.FreeMemory(hProcess, lpDll);
}
}
return(dwBaseAddress);
}
/// <summary>
/// Creates a thread inside another process' context.
/// </summary>
/// <param name="dwStartAddress">Address at which thread will start.</param>
/// <param name="dwParameter">Parameter that will be passed to the thread.</param>
/// <param name="dwCreationFlags">Flags that control creation of the thread.</param>
/// <param name="dwThreadId">[Out] The id of the created thread.</param>
/// <returns>Returns the handle of the created thread.</returns>
public IntPtr CreateRemoteThread(uint dwStartAddress, uint dwParameter, uint dwCreationFlags,
out uint dwThreadId)
{
if (m_bProcessOpen)
{
return(SThread.CreateRemoteThread(m_hProcess, dwStartAddress, dwParameter, dwCreationFlags,
out dwThreadId));
}
dwThreadId = 0;
return(IntPtr.Zero);
}