public bool DoLogin(string username, string password)
        {
            var data = new NameValueCollection { { "username", username } };
            // First get the RSA key with which we will encrypt our password.
            string response = Fetch("https://steamcommunity.com/login/getrsakey", "POST", data, false);
            GetRsaKey rsaJson = JsonConvert.DeserializeObject<GetRsaKey>(response);

            // Validate, if we could get the rsa key.
            if (!rsaJson.success)
            {
                return false;
            }

            // RSA Encryption.
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            RSAParameters rsaParameters = new RSAParameters
            {
                Exponent = HexToByte(rsaJson.publickey_exp),
                Modulus = HexToByte(rsaJson.publickey_mod)
            };

            rsa.ImportParameters(rsaParameters);

            // Encrypt the password and convert it.
            byte[] bytePassword = Encoding.ASCII.GetBytes(password);
            byte[] encodedPassword = rsa.Encrypt(bytePassword, false);
            string encryptedBase64Password = Convert.ToBase64String(encodedPassword);

            SteamResult loginJson = null;
            CookieCollection cookieCollection;
            string steamGuardText = "";
            string steamGuardId = "";
            string twofactorcode = "";

            // Do this while we need a captcha or need email authentification. Probably you have misstyped the captcha or the SteamGaurd code if this comes multiple times.
            do
            {
                Console.WriteLine("SteamWeb: Logging In...");

                bool captcha = loginJson != null && loginJson.captcha_needed;
                bool steamGuard = loginJson != null && loginJson.emailauth_needed;
                bool twofactor = loginJson != null && loginJson.requires_twofactor;

                string time = Uri.EscapeDataString(rsaJson.timestamp);

                string capGid = string.Empty;
                // Response does not need to send if captcha is needed or not.
                // ReSharper disable once MergeSequentialChecks
                if (loginJson != null && loginJson.captcha_gid != null)
                {
                    capGid = Uri.EscapeDataString(loginJson.captcha_gid);
                }

                data = new NameValueCollection { { "password", encryptedBase64Password }, { "username", username } };

                // Captcha Check.
                string capText = "";
                if (captcha)
                {
                    Console.WriteLine("SteamWeb: Captcha is needed.");
                    System.Diagnostics.Process.Start("https://steamcommunity.com/public/captcha.php?gid=" + loginJson.captcha_gid);
                    Console.WriteLine("SteamWeb: Type the captcha:");
                    string consoleText = Console.ReadLine();
                    if (!string.IsNullOrEmpty(consoleText))
                    {
                        capText = Uri.EscapeDataString(consoleText);
                    }
                }

                data.Add("captchagid", captcha ? capGid : "-1");
                data.Add("captcha_text", captcha ? capText : "");
                // Captcha end.

                if (twofactor)
                {
                    Console.WriteLine("SteamWeb: TwoFactor is needed.");
                    Console.WriteLine("SteamWeb: Type the code displayed on your mobile authenticator");
                    string consoleText = Console.ReadLine();
                    if (!string.IsNullOrEmpty(consoleText))
                    {
                        twofactorcode = Uri.EscapeDataString(consoleText);
                    }
                }

                // Added Header for two factor code.
                data.Add("twofactorcode", twofactor ? twofactorcode : "");

                // Added Header for remember login. It can also set to true.
                data.Add("remember_login", "false");

                // SteamGuard check. If SteamGuard is enabled you need to enter it. Care probably you need to wait 7 days to trade.
                // For further information about SteamGuard see: https://support.steampowered.com/kb_article.php?ref=4020-ALZM-5519&l=english.
                if (steamGuard)
                {
                    Console.WriteLine("SteamWeb: SteamGuard is needed.");
                    Console.WriteLine("SteamWeb: Type the code:");
                    string consoleText = Console.ReadLine();
                    if (!string.IsNullOrEmpty(consoleText))
                    {
                        steamGuardText = Uri.EscapeDataString(consoleText);
                    }
                    steamGuardId = loginJson.emailsteamid;

                    // Adding the machine name to the NameValueCollection, because it is requested by steam.
                    Console.WriteLine("SteamWeb: Type your machine name:");
                    consoleText = Console.ReadLine();
                    var machineName = string.IsNullOrEmpty(consoleText) ? "" : Uri.EscapeDataString(consoleText);
                    data.Add("loginfriendlyname", machineName != "" ? machineName : "defaultSteamBotMachine");
                }

                data.Add("emailauth", steamGuardText);
                data.Add("emailsteamid", steamGuardId);
                // SteamGuard end.

                // Added unixTimestamp. It is included in the request normally.
                var unixTimestamp = (int)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
                // Added three "0"'s because Steam has a weird unix timestamp interpretation.
                data.Add("donotcache", unixTimestamp + "000");

                data.Add("rsatimestamp", time);

                // Sending the actual login.
                using (HttpWebResponse webResponse = Request("https://steamcommunity.com/login/dologin/", "POST", data, false))
                {
                    var stream = webResponse.GetResponseStream();
                    if (stream == null)
                    {
                        return false;
                    }
                    using (StreamReader reader = new StreamReader(stream))
                    {
                        string json = reader.ReadToEnd();
                        loginJson = JsonConvert.DeserializeObject<SteamResult>(json);
                        cookieCollection = webResponse.Cookies;
                    }
                }
            } while (loginJson.captcha_needed || loginJson.emailauth_needed || loginJson.requires_twofactor);

            // If the login was successful, we need to enter the cookies to steam.
            if (loginJson.success)
            {
                _cookies = new CookieContainer();
                foreach (Cookie cookie in cookieCollection)
                {
                    _cookies.Add(cookie);
                }
                SubmitCookies(_cookies);
                return true;
            }
            else
            {
                Console.WriteLine("SteamWeb Error: " + loginJson.message);
                return false;
            }

        }