Book Image

Python Penetration Testing Cookbook

By : Rejah Rehim
Book Image

Python Penetration Testing Cookbook

By: Rejah Rehim

Overview of this book

Penetration testing is the use of tools and code to attack a system in order to assess its vulnerabilities to external threats. Python allows pen testers to create their own tools. Since Python is a highly valued pen-testing language, there are many native libraries and Python bindings available specifically for pen-testing tasks. Python Penetration Testing Cookbook begins by teaching you how to extract information from web pages. You will learn how to build an intrusion detection system using network sniffing techniques. Next, you will find out how to scan your networks to ensure performance and quality, and how to carry out wireless pen testing on your network to avoid cyber attacks. After that, we’ll discuss the different kinds of network attack. Next, you’ll get to grips with designing your own torrent detection program. We’ll take you through common vulnerability scenarios and then cover buffer overflow exploitation so you can detect insecure coding. Finally, you’ll master PE code injection methods to safeguard your network.
Table of Contents (15 chapters)

Using a regular expression to get the information from the downloaded web pages

The regular expression (re) module helps to find specific patterns of text from the downloaded web page. Regular expressions can be used to parse data from the web pages.

For instance, we can try to download all images in a web page with the help of the regular expression module.

How to do it...

For this, we can write a Python script that can download all JPG images in a web page:

  1. Create a file named in your working directory.
  2. Open this file in a text editor. You could use sublime text3.
  3. As usual, import the required modules:
import urllib2
import re
from os.path import basename
from urlparse import urlsplit  
  1. Download the...