using System;

using System.IO;

using System.Linq;

using System.Text;

​

public class Program

{

    public static void Main(string[] args)

    {

        byte[] keyTable = GenerateXORKey(

            "020000002d916f2384f7857f30110170d58035e2b638d2e928251db7b8b30cea47110a330259d430bf5dc0609bd0a1d701d2192c3f983916cb480f1339fec51d1b01bc0467c954d8fad613d91495919d9a6f73e5", /* Packed Path */

            @"E:\Users\ObsidianMinor\Music"); /* Known Path */

​

        string key = GetHex(keyTable).ToLower();

        Console.WriteLine(key);

    }

​

    public static string GetHex(byte[] data)

    {

        return BitConverter.ToString(

            data).Replace("-", string.Empty);

    }

    public static byte[] GetBytes(string hex)

    {

        return Enumerable.Range(0, hex.Length)

                         .Where(x => x % 2 == 0)

                         .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))

                         .ToArray();

    }

​

    public static byte[] GenerateXORKey(string packedHex, string expectedUTF8)

    {

        byte[] packedData = GetBytes(packedHex);

        using (var packedStream = new MemoryStream(packedData))

        using (var inPacked = new BinaryReader(packedStream))

        {

            inPacked.BaseStream.Position += 16;

            byte[] decipherableData = inPacked.ReadBytes(

                ((int)inPacked.BaseStream.Length) - 16);

​

            byte[] expectedData = Encoding.UTF8.GetBytes(expectedUTF8);

            byte[] keyTable = new byte[expectedData.Length];

​

            for (int i = 0; i < expectedData.Length; i++)

            {

                for (byte b = 0; b < byte.MaxValue; b++)

                {

                    if (expectedData[i] ==

                        (decipherableData[i] ^ b))

                    {

                        keyTable[i] = b;

                        break;

                    }

                }

            }

            return keyTable;

        }

    }

}