using System;

using System.Security.Cryptography;

public class Program

{

    public static void Main()

    {

        using (SHA256 mySHA256 = SHA256.Create())

        {

            //string salt = System.Text.Encoding.UTF8.GetString(FromHex("8a 29 bd f3 f1 43 fa 96 f6 58 8d c0 5b 7c 52 b8 e8 6d f5 2c f4 51 7d 46 69 3c 05 2f 54 b3 66 fb"));

            //string salt = System.Text.Encoding.UTF8.GetString(Convert.FromHexString("8a 29 bd f3 f1 43 fa 96 f6 58 8d c0 5b 7c 52 b8 e8 6d f5 2c f4 51 7d 46 69 3c 05 2f 54 b3 66 fb".Replace(" ", "")));

            string pwd_plaintext = "%Al1442500";

            //Console.WriteLine(Convert.ToHexString(System.Text.Encoding.UTF8.GetBytes(pwd_plaintext)));

            //string combined = salt + pwd_plaintext;

            var saltBinary = Convert.FromHexString("6f 31 54 b2 b9 59 93 6a af 0a 3d d0 b0 0e 29 6d fb 7e d5 73 d3 30 2e a7 08 1a 3f fe 20 ad 74 de".Replace(" ", ""));

            var pwdPlainBinary = System.Text.Encoding.UTF8.GetBytes(pwd_plaintext);

            byte[] hashValue = mySHA256.ComputeHash(Combine(saltBinary, pwdPlainBinary));

            //byte[] hashValue = mySHA256.ComputeHash(System.Text.Encoding.UTF8.GetBytes(combined));

            Console.WriteLine(Convert.ToHexString(hashValue));

            //8a b2 35 a6 d8 15 11 0e ef d3 91 23 80 7e e7 1f 06 6b c6 bc ce 2e b7 0f 62 fc d7 e6 e3 8b 60 fe

        }

    }

    ///HELPERS

    public static byte[] Combine(byte[] first, byte[] second)

{

    byte[] bytes = new byte[first.Length + second.Length];

    Buffer.BlockCopy(first, 0, bytes, 0, first.Length);

    Buffer.BlockCopy(second, 0, bytes, first.Length, second.Length);

    return bytes;

}

    public static byte[] FromHex(string hex)

{

    hex = hex.Replace(" ", "");

    byte[] raw = new byte[hex.Length / 2];

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

    {

        raw[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);

    }

    return raw;

}

}