Book Image

Kali Linux Web Penetration Testing Cookbook

By : Gilberto Najera-Gutierrez
Book Image

Kali Linux Web Penetration Testing Cookbook

By: Gilberto Najera-Gutierrez

Overview of this book

Web applications are a huge point of attack for malicious hackers and a critical area for security professionals and penetration testers to lock down and secure. Kali Linux is a Linux-based penetration testing platform and operating system that provides a huge array of testing tools, many of which can be used specifically to execute web penetration testing. This book will teach you, in the form step-by-step recipes, how to detect a wide array of vulnerabilities, exploit them to analyze their consequences, and ultimately buffer attackable surfaces so applications are more secure, for you and your users. Starting from the setup of a testing laboratory, this book will give you the skills you need to cover every stage of a penetration test: from gathering information about the system and the application to identifying vulnerabilities through manual testing and the use of vulnerability scanners to both basic and advanced exploitation techniques that may lead to a full system compromise. Finally, we will put this into the context of OWASP and the top 10 web application vulnerabilities you are most likely to encounter, equipping you with the ability to combat them effectively. By the end of the book, you will have the required skills to identify, exploit, and prevent web application vulnerabilities.
Table of Contents (17 chapters)
Kali Linux Web Penetration Testing Cookbook
About the Author
About the Reviewers

Cracking password hashes by brute force using oclHashcat/cudaHashcat

In recent years, the development of graphics cards has evolved enormously, the chips they include now have hundreds or thousands of processors inside them and all of them work in parallel. This, when applied to password cracking, means that, if a single processor can calculate ten thousand hashes in a second, one GPU with a thousand cores can do ten million. That means reducing cracking times by a thousand or more.

Now we will use Hashcat in its GPU version to crack hashes by brute force. If you have Kali Linux installed on a computer with an Nvidia chip, you will need cudaHashcat. If it has an ATI chip, oclHashcat will be your choice. If you have Kali Linux on a virtual machine, GPU cracking may not work, but you can always install it on your host machine, there are versions for both Windows and Linux.

In this recipe, we will use oclHashcat, there is no difference in the use of the commands between that and cudaHashcat,...