Book Image

Web Penetration Testing with Kali Linux - Third Edition

By : Gilberto Najera-Gutierrez, Juned Ahmed Ansari
Book Image

Web Penetration Testing with Kali Linux - Third Edition

By: Gilberto Najera-Gutierrez, Juned Ahmed Ansari

Overview of this book

Web Penetration Testing with Kali Linux - Third Edition shows you how to set up a lab, helps you understand the nature and mechanics of attacking websites, and explains classical attacks in great depth. This edition is heavily updated for the latest Kali Linux changes and the most recent attacks. Kali Linux shines when it comes to client-side attacks and fuzzing in particular. From the start of the book, you'll be given a thorough grounding in the concepts of hacking and penetration testing, and you'll see the tools used in Kali Linux that relate to web application hacking. You'll gain a deep understanding of classicalSQL, command-injection flaws, and the many ways to exploit these flaws. Web penetration testing also needs a general overview of client-side attacks, which is rounded out by a long discussion of scripting and input validation flaws. There is also an important chapter on cryptographic implementation flaws, where we discuss the most recent problems with cryptographic layers in the networking stack. The importance of these attacks cannot be overstated, and defending against them is relevant to most internet users and, of course, penetration testers. At the end of the book, you'll use an automated technique called fuzzing to identify flaws in a web application. Finally, you'll gain an understanding of web application vulnerabilities and the ways they can be exploited using the tools in Kali Linux.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
Packt Upsell

Considerations before using an automated scanner

Web application vulnerability scanners operate a little differently than other types of scanners, such as OpenVAS or Nessus. The latter typically connects to a port on a host, obtain the type and version of the service running on such ports, and then check this information against their vulnerability database. On the contrary, a web application scanner identifies input parameters within the application's pages and submits a multitude of requests probing different payloads on each parameter.

As a result of operating in this manner, an automated scan will almost certainly record information in the database, generate activity logs, alter existing information, and if the application has delete or restore functionality, it may even erase the database.

The following are the key considerations a penetration tester must take into account before including a web vulnerability scanner as a means for testing:

  • Check the scope and project documentation to...