Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By : Paulino Calderon
Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By: Paulino Calderon

Overview of this book

Nmap is one of the most powerful tools for network discovery and security auditing used by millions of IT professionals, from system administrators to cybersecurity specialists. This third edition of the Nmap: Network Exploration and Security Auditing Cookbook introduces Nmap and its family - Ncat, Ncrack, Ndiff, Zenmap, and the Nmap Scripting Engine (NSE) - and guides you through numerous tasks that are relevant to security engineers in today’s technology ecosystems. The book discusses some of the most common and useful tasks for scanning hosts, networks, applications, mainframes, Unix and Windows environments, and ICS/SCADA systems. Advanced Nmap users can benefit from this book by exploring the hidden functionalities within Nmap and its scripts as well as advanced workflows and configurations to fine-tune their scans. Seasoned users will find new applications and third-party tools that can help them manage scans and even start developing their own NSE scripts. Practical examples featured in a cookbook format make this book perfect for quickly remembering Nmap options, scripts and arguments, and more. By the end of this Nmap book, you will be able to successfully scan numerous hosts, exploit vulnerable areas, and gather valuable information.
Table of Contents (22 chapters)
Appendix A: HTTP, HTTP Pipelining, and Web Crawling Configuration Options
Appendix Β: Brute-Force Password Auditing Options
Appendix F: References and Additional Reading

Brute forcing Oracle SID names

Oracle SID names are used to identify database instances. The TNS listener service can be abused to find valid SID names. If the SID name is known, dictionary attacks can be performed to attempt to guess valid credentials.

This recipe shows how to brute-force Oracle SID names with Nmap.

How to do it...

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

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

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

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

How it works...

The -sV --script oracle-sid-brute options tell Nmap to initiate service detection (-sV) and use the oracle-sid-brute NSE script. The oracle-sid-brute NSE script was submitted by...