Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By : Paulino Calderon
Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By: Paulino Calderon

Overview of this book

This is the second edition of ‘Nmap 6: Network Exploration and Security Auditing Cookbook’. A book aimed for anyone who wants to master Nmap and its scripting engine through practical tasks for system administrators and penetration testers. Besides introducing the most powerful features of Nmap and related tools, common security auditing tasks for local and remote networks, web applications, databases, mail servers, Microsoft Windows machines and even ICS SCADA systems are explained step by step with exact commands and argument explanations. The book starts with the basic usage of Nmap and related tools like Ncat, Ncrack, Ndiff and Zenmap. The Nmap Scripting Engine is thoroughly covered through security checks used commonly in real-life scenarios applied for different types of systems. New chapters for Microsoft Windows and ICS SCADA systems were added and every recipe was revised. This edition reflects the latest updates and hottest additions to the Nmap project to date. The book will also introduce you to Lua programming and NSE script development allowing you to extend further the power of Nmap.
Table of Contents (25 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
13
Brute Force Password Auditing Options
17
References and Additional Reading

Brute forcing MySQL passwords


There are several methods to obtain valid MySQL usernames. For example, web servers sometimes return database connection errors that reveal the MySQL username used by the web application. Penetration testers could use this information to perform brute force password auditing attacks and obtain access to sensitive information.

This recipe describes how to launch dictionary attacks against MySQL servers with Nmap.

How to do it...

To perform brute force password auditing against MySQL servers, use the following command:

$ nmap -p3306 --script mysql-brute <target>

If valid credentials are found, they will be included in the mysql-brute output section:

   3306/tcp open  mysql 
   | mysql-brute:   
   |   root:<empty> => Valid credentials 
   |_  test:test => Valid credentials 

How it works...

The mysql-brute script was written by Patrik Karlsson, and it is helpful when auditing MySQL servers for weak passwords. It performs dictionary attacks to find valid...