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Kali Linux Wireless Penetration Testing Beginner???s Guide

Kali Linux Wireless Penetration Testing Beginner???s Guide

By : Dieterle, Cameron Buchanan, Vivek Ramachandran
4.6 (12)
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Kali Linux Wireless Penetration Testing Beginner???s Guide

Kali Linux Wireless Penetration Testing Beginner???s Guide

4.6 (12)
By: Dieterle, Cameron Buchanan, Vivek Ramachandran

Overview of this book

As wireless networks become ubiquitous in our lives, wireless penetration testing has become a key skill in the repertoire of the professional penetration tester. This has been highlighted again recently with the discovery of the KRACK attack which enables attackers to potentially break into Wi-Fi networks encrypted with WPA2. The Kali Linux security distribution comes with a myriad of tools used for networking attacks and detecting security loopholes. Kali Linux Wireless Penetration Testing Beginner's Guide, Third Edition has been updated to Kali Linux 2017.3 with the latest methodologies, including full coverage of the KRACK attack and how to defend against it. The book presents wireless pentesting from the ground up, introducing all elements of penetration testing with each new technology. You'll learn various wireless testing methodologies by example, from the basics of wireless routing and encryption through to detailed coverage of hacking methods and attacks such as the Hirte and Caffe Latte.
Table of Contents (14 chapters)
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13
Index

The four-way handshake KRACK attack


Keeping in mind what we just discussed, you may now be surprised to find that this process is vulnerable to attack! However, the issue is not the core concept, but the practical implementation of the standard. As with most technical standards, sacrifices were made to the security of the solution in order to make it user-friendly. In specific, the sacrifice that was made to make the solution usable was making certain stages in the handshake replayable in the event of a missed message.

While this is not a huge issue for most of the process, Stage 3 is replayable and can have a dramatic effect on the security of the overall solution. By placing themselves in a Man-in-the-Middle (MITM) position during the authentication process, an attacker can block the correctly negotiated PTK and install their own in certain circumstances. The Key Replay Counter and associated nonce values are reset when a key is negotiated. So by blocking certain packets, an MITM attacker...

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