Auth_Form.cs

using System;
using System.IO;
using System.Text;
using System.Media;
using System.Drawing;
using System.Threading;
using System.Management;
using System.Diagnostics;
using System.Windows.Forms;
using MetroFramework.Forms;
using System.ComponentModel;
using System.Security.Cryptography;
using System.Text.RegularExpressions;

namespace Rio_External_Csgo_Cheat
{
    public partial class Auth_Form : MetroForm
    {
        private static readonly byte[] SALT = new byte[] { 0x26, 0xdc, 0xff, 0x00, 0xad, 0xed, 0x7a, 0xee, 0xc5, 0xfe, 0x07, 0xaf, 0x4d, 0x08, 0x22, 0x21 };

        private static readonly uint[] Table = {
            0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
            0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
            0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
            0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
            0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
            0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
            0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
            0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
            0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
            0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
            0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
            0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
            0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
            0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
            0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
            0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
            0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
            0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
            0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
            0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
            0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
            0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
            0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
            0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
            0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
            0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
            0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
            0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
            0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
            0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
            0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
            0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
            0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
            0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
            0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
            0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
            0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
            0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
            0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
            0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
            0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
            0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
            0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
        };


        private Version thisVersion = new Version(Application.ProductVersion);

        private string DB = "";
        private bool DbFailed = false;

        public string Access = "NOPE";
        public bool AccessGranted = false;
        public bool FakeAccess = true;



        //Наш CRC32 системы
        private uint CRC = 0;
        public string CrcStr => CRC.ToString("X2").ToUpper();



        public Auth_Form()
        {
            InitializeComponent();

            key_metroTextBox.Text = Properties.Settings.Default.KeySaved;

            //ВЫЧИСЛЯЕМ НАШ CRC32 СИСТЕМЫ
            {
                //Вычисляем хеш CRC32 кол. процессоров в системе
                byte[] processorsCount = BitConverter.GetBytes(Environment.ProcessorCount);
                for (int j = 0; j < processorsCount.Length; j++)
                    CRC = Table[(byte)(CRC ^ processorsCount[j])] ^ (CRC >> 8);

                //Получаем секретные данные о системе
                ManagementObjectCollection osDetailsCollection = new ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem").Get();
                foreach (ManagementObject mo in osDetailsCollection)
                {
                    foreach (PropertyData prop in mo.Properties)
                    {
                        if (prop.Name == "InstallDate") //20161119192430.000000+120
                        {
                            byte[] installDate = Encoding.UTF8.GetBytes(prop.Value.ToString());
                            for (int j = 0; j < installDate.Length; j++)
                                CRC = Table[(byte)(CRC ^ installDate[j])] ^ (CRC >> 8);
                        }
                        else if (prop.Name == "Name") //Microsoft Windows 7 Максимальная |C:\Windows|\Device\Harddisk0\Partition2
                        {
                            byte[] name = Encoding.UTF8.GetBytes(prop.Value.ToString());
                            for (int j = 0; j < name.Length; j++)
                                CRC = Table[(byte)(CRC ^ name[j])] ^ (CRC >> 8);
                        }
                        else if (prop.Name == "OSArchitecture") //64-bit
                        {
                            byte[] osArch = Encoding.UTF8.GetBytes(prop.Value.ToString());
                            for (int j = 0; j < osArch.Length; j++)
                                CRC = Table[(byte)(CRC ^ osArch[j])] ^ (CRC >> 8);
                        }
                        else if (prop.Name == "Version") //6.1.7601
                        {
                            byte[] version = Encoding.UTF8.GetBytes(prop.Value.ToString());
                            for (int j = 0; j < version.Length; j++)
                                CRC = Table[(byte)(CRC ^ version[j])] ^ (CRC >> 8);
                        }
                    }
                }
            }

            //Пишем наш CRC32 в заголовке формы
            this.Text = $"Авторизация - ID: {CrcStr}";
        }



        private void Auth_Form_Shown(object sender, EventArgs e)
        {
            this.TopMost = true;
            dbDownloader_backgroundWorker.RunWorkerAsync();
            this.TopMost = false;
        }


        private void dbDownloader_backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            Thread.Sleep(500);

            try
            {
                DB = Tools.DownloadHtml("https://github.com/TheRioMiner/RECC/master/Version%26DB.txt");
            }
            catch
            {
                DbFailed = true;

                this.BeginInvoke(new MethodInvoker(delegate
                {
                    status_metroLabel.Text = "Ошибка соединения, убедитесь в наличии интернета!";
                    status_metroLabel.BackColor = Color.Red;
                }));
            }

            //Если все скачалось нормально
            if (DB != "" && !DbFailed)
            {
                Version latestVersion = new Version("0.0.0.0");
                try
                {
                    var versionMatch = new Regex(@"\B(!Version=)(\d+\.\d+\.\d+\.\d)\b", RegexOptions.IgnoreCase).Match(DB);
                    if (versionMatch.Success)
                        latestVersion = new Version(versionMatch.Groups[2].Value);
                    else
                        throw new Exception("Version regex not success");
                }
                catch
                {
                    this.BeginInvoke(new MethodInvoker(delegate
                    {
                        status_metroLabel.Text = "Ошибка извлечения версии!";
                        status_metroLabel.BackColor = Color.Red;
                    }));

                    Thread.Sleep(1000);
                    return;
                }


                //Новая версия?
                if (latestVersion > thisVersion)
                {
                    this.BeginInvoke(new MethodInvoker(delegate
                    {
                        var dialResult = MessageBox.Show(this, "Обнаружена новая версия чита!\nОткрыть и скачать в браузере?", "Обновление", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
                        if (dialResult == DialogResult.Yes)
                            Process.Start("https://github.com/TheRioMiner/RECC/master/Latest%20Version.rar");
                    }));
                }
                else
                {
                    //Если из будущего :D
                    this.BeginInvoke(new MethodInvoker(delegate
                    {
                        if (thisVersion > latestVersion)
                            MessageBox.Show(this, "Да я вижу ты из будущего :D", "Рио", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

                        status_metroLabel.Text = "Готово!";
                    }));
                }

                Thread.Sleep(822);

                //Показываем форму авторизации
                this.BeginInvoke(new MethodInvoker(delegate
                {
                    loading_metroPanel.Visible = false;
                    auth_metroPanel.Visible = true;
                }));
            }
        }



        public static string Decrypt(string cryptedStr, int i)
        {
            using (DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider())
            using (MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(cryptedStr)))
            using (CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoProvider.CreateDecryptor(BitConverter.GetBytes(-7941422581687446222 + (i * 2)), BitConverter.GetBytes(2213677935941854222 + i * 7)), CryptoStreamMode.Read))
            using (StreamReader reader = new StreamReader(cryptoStream))
            {
                return reader.ReadToEnd();
            }
        }



        private void auth_metroButton_Click(object sender, EventArgs e)
        {
            string key = key_metroTextBox.Text.ToLower();

            string[] db = DB.Split('\n');
            if (!DbFailed && db.Length > 2)
            {
                for (int i = 0; i < db.Length; i++)
                {
                    try
                    {
                        string line = db[i].Trim();
                        if (!string.IsNullOrEmpty(line) && !line.StartsWith("!"))
                        {
                            string decrypted = Decrypt(line, i);
                            if (decrypted.Contains("|~|"))
                            {
                                string[] keyAndHash = decrypted.Split(new string[] { "|~|" }, StringSplitOptions.None);
                                if (keyAndHash[0].Trim().ToLower() == key)
                                {
                                    if (keyAndHash[1].Trim().ToUpper() == CrcStr)
                                    {
                                        //Удаляем из памяти важные данные от кулхацкеров с CheatEngine
                                        line = "";
                                        decrypted = "";
                                        keyAndHash[0] = "";
                                        keyAndHash[1] = "";
                                        for (int z = 0; z < 4; z++)
                                        {
                                            line = "";
                                            decrypted = "";
                                            keyAndHash[0] = "";
                                            keyAndHash[1] = "";
                                        }

                                        //Имитируем загрузку
                                        Thread.Sleep(new Random().Next(896, 1512));

                                        //Оповещаем звуком об успехе
                                        SystemSounds.Asterisk.Play();

                                        auth_metroButton.Enabled = false;
                                        FakeAccess = false;
                                        AccessGranted = true;
                                        Access = "YEP!";
                                        this.Close();
                                        return;
                                    }
                                    else
                                    {
                                        //Удаляем из памяти важные данные от кулхацкеров с CheatEngine
                                        line = "";
                                        decrypted = "";
                                        keyAndHash[0] = "";
                                        keyAndHash[1] = "";
                                        for (int z = 0; z < 4; z++)
                                        {
                                            line = "";
                                            decrypted = "";
                                            keyAndHash[0] = "";
                                            keyAndHash[1] = "";
                                        }

                                        //Имитируем загрузку
                                        Thread.Sleep(new Random().Next(896, 1512));

                                        MessageBox.Show(this, "На этот ключ зарегистрирован другой пользователь!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                                        authButtonReload_timer.Enabled = true;
                                        FakeAccess = true;
                                        Access = "NOPE";
                                        AccessGranted = false;
                                        this.Close();
                                        return;
                                    }
                                }
                            }
                        }
                    }
                    catch
                    {
                        SystemSounds.Exclamation.Play();
                        Thread.Sleep(1000);
                    }
                }

                //Имитируем загрузку
                Thread.Sleep(new Random().Next(896, 1512));

                //Херня
                MessageBox.Show(this, "Неверный ключ!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                auth_metroButton.Enabled = false;
                authButtonReload_timer.Enabled = true;
            }
        }



        //Сбросить кнопку в нормальное состояние через 1 сек
        private void authButtonReload_timer_Tick(object sender, EventArgs e)
        {
            auth_metroButton.Enabled = true;
        }
    }
}