sha1calc

gistfile1.cs

using System;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace shacalc
{
    class Program
    {
        public static string Encode(string input, byte[] key)
        {
            HMACSHA1 myhmacsha1 = new HMACSHA1(key);
            byte[] byteArray = Encoding.ASCII.GetBytes(input.ToUpper());
            MemoryStream stream = new MemoryStream(byteArray);
            return (myhmacsha1.ComputeHash(stream).Aggregate("", (s, e) => s + String.Format("{0:x2}", e), s => s)).ToUpper();
        }

        static void Main(string[] args)
        {
            //MODULE_CHECK: HMACSHA1(random_seed).ComputeHash(GetBytes(UPPER_CASE("some.dll")))
            //PAGE_CHECK:     HMACSHA1(random_seed).ComputeHash(baseAddress + address, length) can be used for dll checks..

            string str = "4D5A"; // data
            UInt32 rand = 0xFFFFFFFF; // random shit
            byte[] seed = BitConverter.GetBytes(rand);
            string result = Encode(str, seed);

            // generate txt
            string path = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);
            path = path.Substring(6, path.Length-6);
            System.Console.WriteLine(path + "\\sha1.txt");
            System.Console.WriteLine(result);
            System.IO.StreamWriter file = new System.IO.StreamWriter(path + "\\sha1.txt", false);
            file.WriteLine(result);
            file.Close();
            System.Console.ReadLine();
        }
    }
}