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)

XML injection vectors

XML injection and XML parsing-related vulnerabilities aren't always observable from the client-side code the XML part of the processing chain could be occurring within the server formatting your client-side input.

Following an OWASP XML injection example, the client-side form (assuming, for argument's sake, that it's making a GET request) will create an HTTP request that looks like this:

Username: james
Password: Thew45p!
E-mail: [email protected]

Then, before inserting itself into an XML-document-like-database, the application will build an individual XML node:

<user> 
<username>james</username>
<password>Thew45p!</password>
<userid>500</userid>
<mail>[email protected]</mail>
</user>

You can exploit this behavior to do different kinds of injection, including...