Book Image

Web Penetration Testing with Kali Linux

Book Image

Web Penetration Testing with Kali Linux

Overview of this book

Kali Linux is built for professional penetration testing and security auditing. It is the next-generation of BackTrack, the most popular open-source penetration toolkit in the world. Readers will learn how to think like real attackers, exploit systems, and expose vulnerabilities. Even though web applications are developed in a very secure environment and have an intrusion detection system and firewall in place to detect and prevent any malicious activity, open ports are a pre-requisite for conducting online business. These ports serve as an open door for attackers to attack these applications. As a result, penetration testing becomes essential to test the integrity of web-applications. Web Penetration Testing with Kali Linux is a hands-on guide that will give you step-by-step methods on finding vulnerabilities and exploiting web applications. "Web Penetration Testing with Kali Linux" looks at the aspects of web penetration testing from the mind of an attacker. It provides real-world, practical step-by-step instructions on how to perform web penetration testing exercises. You will learn how to use network reconnaissance to pick your targets and gather information. Then, you will use server-side attacks to expose vulnerabilities in web servers and their applications. Client attacks will exploit the way end users use web applications and their workstations. You will also learn how to use open source tools to write reports and get tips on how to sell penetration tests and look out for common pitfalls. On the completion of this book, you will have the skills needed to use Kali Linux for web penetration tests and expose vulnerabilities on web applications and clients that access them.
Table of Contents (15 chapters)
Web Penetration Testing with Kali Linux
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Man-in-the-middle defense


Man-in-the-middle attacks are difficult to protect against. The attack happens outside of the victim's controlled environment, and when executed properly, doesn't leave an obvious signature that alert the victims involved. MITM is typically the first step of a more sinister attack such as SSL strip. One common way to protect against MITM is ensuring websites use SSL/TLS 3.0. In other words, make sure the websites are accessed using HTTPS or HTTP secure connections. Verifying HTTPS is not as easy as looking for a little green address bar with a lock symbol, because attackers can serve victims certificates to make it appear like the session is secure.

To properly test a HTTP session, examine the certificate and look at the certificate authority. This additional effort discourages many users from verifying a secured session, which makes this attack method very effective.

The previous screenshot shows a SSL certificate for Gmail was issued by the Google Internet Authority...