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)

Buffer overflow

Buffer overflow can cause the program to crash or leak private information. A buffer in case of a running program, can be considered as a section in a computer's main memory with specific boundaries, so basically accessing any buffer outside this allocated region of memory space.

As the variables are stored together in stack/heap, accessing anything outside this boundary may cause read/write of some bytes of some other variables. But with a better understanding we can execute some attacks.

How to do it...

Follow the steps to generate an exploit code for buffer overflow attacks in Linux environment:

  1. We have to create a vulnerable application for the test. Create a bof.c file and add the following code...