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Kali Linux Intrusion and Exploitation Cookbook

You're reading from Kali Linux Intrusion and Exploitation Cookbook Powerful recipes to detect vulnerabilities and perform security assessments

Product type Paperback

Published in Apr 2017

Publisher

ISBN-13 9781783982165

Length 512 pages

Edition 1st Edition

Tools

Kali Linux

Concepts

Penetration Testing

Authors (2):

Dhruv Shah

Ishan Girdhar

View More author details

Table of Contents (18) Chapters

Title Page

Credits

About the Authors

About the Reviewers

www.PacktPub.com

Customer Feedback

Preface

1. Getting Started - Setting Up an Environment

2. Network Information Gathering FREE CHAPTER

3. Network Vulnerability Assessment

4. Network Exploitation

5. Web Application Information Gathering

6. Web Application Vulnerability Assessment

7. Web Application Exploitation

8. System and Password Exploitation

9. Privilege Escalation and Exploitation

10. Wireless Exploitation

Pen Testing 101 Basics

Cracking password hashes

In this recipe, we are to see how we can crack the hashes for a clear-text password. We will be using John the Ripper. John the Ripper (JTR) is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt (3) password hash types most commonly found on various Unix systems, supported out of the box are Windows LM hashes, plus lots of other hashes and ciphers in the community-enhanced version.

Getting ready

We will require the hash obtained on the Windows machine to be ported to our Kali machine, after which we can commence with a comparison of the hashes.

How to do it...

Let us begin with one of the most efficient tools when it comes to cracking passwords, JTR. For the given example, we have taken the hash dump received previously. The file has been renamed crackme for ease of readability.
Enter the following command in the terminal:

john crackme

The output...

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Authors (2)

Ishan Girdhar

Ishan Girdhar

Ishan Girdhar is a senior pentester and DevSecOps engineer. With over 7 years of work experience, he has been vigorously involved in building application security and bug bounty programs, in his current and previous roles, helping businesses and organizations to be more secure ad aware. He is currently working with Southeast Asia's biggest ride-hailing platform, Grab. Previously, he has worked with organizations such as InMobi and one of

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Dhruv Shah

Dhruv Shah

Dhruv Shah holds a Masters degree in IT and has 7 years of experience as a specialist in Information Security. He started off as a trainer sensitizing staff in private sector organizations about security issues and what hackers look for when they launch attacks on networks. He, later on, switched his job to carry out penetration testing for Indian government agencies and then for banking clients in the Middle East. He now has extensive experience in penetration testing for Fortune 500 companies involving web and mobile applications, networks, Infra, and Red Team work. In his spare time, he co-authored the book Kali Linux Intrusion and Exploitation and is an active member and moderator of one of the Null chapters in India.

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