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Nmap 6: Network Exploration and Security Auditing Cookbook

Nmap 6: Network Exploration and Security Auditing Cookbook

4.7 (9)
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Nmap 6: Network Exploration and Security Auditing Cookbook

Nmap 6: Network Exploration and Security Auditing Cookbook

4.7 (9)

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)
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Nmap 6: Network Exploration and Security Auditing Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
References
Index

Abusing mod_userdir to enumerate user accounts


Apache's module UserDir provides access to the user directories by using URIs with the syntax /~username/. With Nmap we can perform dictionary attacks and determine a list of valid usernames on the web server.

This recipe shows you how to make Nmap perform brute force attacks to enumerate user accounts in Apache web servers, with mod_userdir enabled.

How to do it...

To try to enumerate valid users in a web server with mod_userdir; use Nmap with these arguments:

$ nmap -p80 --script http-userdir-enum <target>

All of the usernames that were found will be included in the results:

PORT   STATE SERVICE
80/tcp open  http
|_http-userdir-enum: Potential Users: root, web, test

How it works...

The argument -p80 --script http-userdir-enum launches the NSE script http-userdir-enum if a web server is found on port 80 (-p80). Apache web servers with mod_userdir allow access to user directories by using URIs such as http://domain.com/~root/, and this script...

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