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 (18 chapters)
13
Brute Force Password Auditing Options
17
References and Additional Reading

Brute forcing Oracle passwords


System administrators managing several databases often need to check for weak passwords as part of the organization's policy. Penetration testers also take advantage of weak passwords to gain unauthorized access. Conveniently, Nmap NSE offers a way of performing remote brute force password auditing against Oracle database servers.

This recipe shows how to perform brute force password auditing against Oracle with Nmap.

How to do it...

Open a terminal and run Nmap with the following command:

$ nmap -sV --script oracle-brute --script-args oracle-brute.sid=TEST <target>

Any valid credentials found will be included in the results in the script output section:

   PORT     STATE  SERVICE REASON 
   1521/tcp open  oracle  syn-ack 
   | oracle-brute:   
   |   Accounts 
   |     system:system => Valid credentials 
   |   Statistics 
   |_    Perfomed 103 guesses in 6 seconds, average tps: 17

How it works...

The argument -sV --script oracle-brute --script-args oracle...