Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

Overview of this book

Nmap is a well known security tool used by penetration testers and system administrators. The Nmap Scripting Engine (NSE) has added the possibility to perform additional tasks using the collected host information. Tasks like advanced fingerprinting and service discovery, information gathering, and detection of security vulnerabilities."Nmap 6: Network exploration and security auditing cookbook" will help you master Nmap and its scripting engine. You will learn how to use this tool to do a wide variety of practical tasks for pentesting and network monitoring. Finally, after harvesting the power of NSE, you will also learn how to write your own NSE scripts."Nmap 6: Network exploration and security auditing cookbook" is a book full of practical knowledge for every security consultant, administrator or enthusiast looking to master Nmap. The book overviews the most important port scanning and host discovery techniques supported by Nmap. You will learn how to detect mis-configurations in web, mail and database servers and also how to implement your own monitoring system. The book also covers tasks for reporting, scanning numerous hosts, vulnerability detection and exploitation, and its strongest aspect; information gathering.
Table of Contents (18 chapters)
Nmap 6: Network Exploration and Security Auditing Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
References
Index

Finding sysadmin accounts with empty passwords on MS SQL servers


Penetration testers often need to check that no administrative account has a weak password. With some help from Nmap NSE, we can easily check that no host (or hosts) has a sysadmin account with an empty password.

This recipe teaches us how to use Nmap to find MS SQL servers with an empty sysadmin password.

How to do it...

To find MS SQL servers with an empty sa account, open your terminal and enter the following Nmap command:

$ nmap -p1433 --script ms-sql-empty-password -v <target>

If an account with an empty password is found, it will be included in the script output section:

PORT     STATE SERVICE 
1433/tcp open  ms-sql-s 
| ms-sql-empty-password: 
|   [192.168.1.102:1433] 
|_    sa:<empty> => Login Success 

How it works...

The parameter -p1433 --script ms-sql-empty-password makes Nmap initiate the NSE script ms-sql-empty-password if an MS SQL server is found running on port 1433.

The script ms-sql-empty-password...