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Kali Linux Web Penetration Testing Cookbook

You're reading from   Kali Linux Web Penetration Testing Cookbook Over 80 recipes on how to identify, exploit, and test web application security with Kali Linux 2

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Product type Paperback
Published in Feb 2016
Publisher
ISBN-13 9781784392918
Length 296 pages
Edition 1st Edition
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Author (1):
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Gilberto Najera-Gutierrez Gilberto Najera-Gutierrez
Author Profile Icon Gilberto Najera-Gutierrez
Gilberto Najera-Gutierrez
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Toc

Table of Contents (12) Chapters Close

Preface 1. Setting Up Kali Linux FREE CHAPTER 2. Reconnaissance 3. Crawlers and Spiders 4. Finding Vulnerabilities 5. Automated Scanners 6. Exploitation – Low Hanging Fruits 7. Advanced Exploitation 8. Man in the Middle Attacks 9. Client-Side Attacks and Social Engineering 10. Mitigation of OWASP Top 10 Index

Using Tamper Data add-on to intercept and modify requests

Sometimes, applications have client-side input validation mechanisms through JavaScript, hidden forms, or POST parameters that one doesn't know or can't see or manipulate directly in the address bar; to test these and other kind of variables, we need to intercept the requests the browser sends and modify them before they reach the server. In this recipe, we will use a Firefox add-on called Tamper Data to intercept the submission of a form and alter some values before it leaves our computer.

How to do it...

  1. Go to Mantra's menu and navigate to Tools | Application Auditing | Tamper Data.
    How to do it...
  2. Tamper Data's window will appear. Now, let's browse to http://192.168.56.102/dvwa/login.php. We can see the requests section in the add-on populating:
    How to do it...

    Note

    Every request we make in the browser will go through Tamper Data while it is active.

  3. To intercept a request and change its values, we need to start the tampering by clicking on...
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