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

Brute forcing Oracle SID names


Oracle servers have SID names, and penetration testers need to find them. Thanks to Nmap we can attempt to list them by performing a dictionary attack against the TNS listener.

This recipe shows how to brute force Oracle SID names by using Nmap.

How to do it...

To brute force Oracle SID names, use the following Nmap command:

$ nmap -sV --script oracle-sid-brute <target>

All of the SIDs found will be included in the NSE script output section for oracle-sid-brute:

PORT     STATE SERVICE REASON
1521/tcp open  oracle  syn-ack
| oracle-sid-brute:  
|   orcl
|   prod
|_  devel

How it works...

The argument -sV --script oracle-sid-brute tells Nmap to initiate service detection (-sV) and use the NSE script oracle-sid-brute.

The NSE script oracle-sid-brute was submitted by Patrik Karlsson to help penetration testers enumerate Oracle SIDs by performing a dictionary attack against Oracle's TNS. This script will be executed if a host has a running service oracle-tns, or...