Book Image

Hands-On Bug Hunting for Penetration Testers

By : Joe Marshall, Himanshu Sharma
Book Image

Hands-On Bug Hunting for Penetration Testers

By: Joe Marshall, Himanshu Sharma

Overview of this book

Bug bounties have quickly become a critical part of the security economy. This book shows you how technical professionals with an interest in security can begin productively—and profitably—participating in bug bounty programs. You will learn about SQli, NoSQLi, XSS, XXE, and other forms of code injection. You’ll see how to create CSRF PoC HTML snippets, how to discover hidden content (and what to do with it once it’s found), and how to create the tools for automated pentesting work?ows. Then, you’ll format all of this information within the context of a bug report that will have the greatest chance of earning you cash. With detailed walkthroughs that cover discovering, testing, and reporting vulnerabilities, this book is ideal for aspiring security professionals. You should come away from this work with the skills you need to not only find the bugs you're looking for, but also the best bug bounty programs to participate in, and how to grow your skills moving forward in freelance security research.
Table of Contents (16 chapters)

CSRF – An End-to-End Example

Let's take another look at a CSRF vulnerability on webscantest.com. Here's the form we'll be testing:

Simple enough. Fire up the Burp proxy and make sure the Intercept feature is on, let's fill in the form with a nice test value:

As a sidenote, Cyan is really cool in the subtractive color system, Cyan is a primary color and can be created by removing red from white light. Let's submit this form and then check back with Burp to see the intercepted request:

OK, noting the important information the HTTP request method, the form encoding, the field data, and so on let's take a look at what happens when we turn Intercept off and allow the POST request to resolve:

Here's what a successful submission looks like. Critically for us, we can see what value the form submitted through the...