BruteForceWem.cs

using System;
using System.Collections.Generic;
using System.Data.HashFunction;
using System.Data.HashFunction.FNV;
using System.IO;
using System.Threading.Tasks;

namespace WemFNVBrute
{
    class Program
    {
        public static HashSet<ulong> testList = new HashSet<ulong>();
        public static HashSet<string> stringList = new HashSet<string>();
        public static List<string> resultsList = new List<string>();
        public static IFNVConfig config = FNVConfig.GetPredefinedConfig(64);
        public static IFNV1a hash = FNV1aFactory.Instance.Create(config);

        static void Main(string[] args)
        {
            // Test out a known value first.
            var dingdongHash = hash.ComputeHash("base\\characters\\common\\skin\\character_mat_instance\\female\\penis\\female_penis_01_ca_pale.mi");
            ulong dingDong = BitConverter.ToUInt64(dingdongHash.Hash, 0);
            if (dingDong != 5872448753792831583)
            {
                System.Console.WriteLine("Hash error?");
                Environment.Exit(0);
            }
            else
            {
                Console.WriteLine("Test Hash OK, starting");
            }

            foreach (string line in File.ReadLines("missinghashes.txt"))
            {
                ulong newHash = ulong.Parse(line);
                testList.Add(newHash);
            }

            ulong total = 1500000000;
            ulong totalthreads = 4;

            Task[] taskArray = new Task[totalthreads];

            for (ulong i = 0; i < (ulong)taskArray.Length; i++)
            {
                ulong v = (total / totalthreads);
                ulong taskmin = i * v;
                ulong taskmax = taskmin + v;

                taskArray[i] = Task<bool>.Factory.StartNew(() => DoBrute(taskmin, taskmax));
                System.Console.WriteLine("Starting thread {0} from {1} to {2}", i, taskmin, taskmax);
            }

            foreach (var i in taskArray)
            {
                i.Wait();
            }

            File.WriteAllLines("Cyberpunk2077.log", resultsList);

        }

        public static bool DoBrute(ulong min, ulong max)
        {
            ulong progress = 0;
            ulong total = max - min;

            for (ulong i = min; i < max; i++)
            {
                if (progress % 10000000 == 0)
                {
                    Console.WriteLine("{0} of {1}", progress, total);
                }
                var testPath = String.Format("base\\sound\\soundbanks\\{0}.wem", i);
                var testHash = hash.ComputeHash(testPath);
                ulong testHashLong = BitConverter.ToUInt64(testHash.Hash, 0);
                if (testList.Contains(testHashLong))
                {
                    var successString = String.Format("{0},{1}", testPath, testHashLong);
                    Console.WriteLine(successString);
                    resultsList.Add(successString);
                }
                progress++;
            }
            return true;
        }
    }
}