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

CSRF attacks


Cross-Site Request Forgery (CSRF) attacks deceive the victim's browser into sending a manipulated request to the vulnerable application while the victim is logged in. So, an application should make sure the request is legitimate.

As a CSRF attack is an attack on a logged-in user, we have to send the session cookie with the request. We can use cookielib to remember cookies between sessions:

import mechanize 
 
 
cookies = mechanize.CookieJar() 
 
cookie_opener = mechanize.build_opener(mechanize.HTTPCookieProcessor(cookies)) 
mechanize.install_opener(cookie_opener)  
 
url = "http://www.webscantest.com/crosstraining/aboutyou.php" 
 
 
 
res = mechanize.urlopen(url) 
 
content = res.read()    

To test for CSRF, we have to submit the form from a page other than the actual page. We could also check the form for a CSRF token. If such a token exists in the form, manipulate the values and make sure the form fails...