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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

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Product type Paperback
Published in Apr 2017
Publisher
ISBN-13 9781783982165
Length 512 pages
Edition 1st Edition
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Authors (2):
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Dhruv Shah Dhruv Shah
Author Profile Icon Dhruv Shah
Dhruv Shah
Ishan Girdhar Ishan Girdhar
Author Profile Icon Ishan Girdhar
Ishan Girdhar
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Toc

Table of Contents (18) Chapters Close

Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
1. Getting Started - Setting Up an Environment FREE CHAPTER 2. Network Information Gathering 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...

  1. 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.
  2. Enter the following command in the terminal:
john crackme

The output...

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