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

Chapter 13: Writing Your Own NSE Scripts

In this chapter, we will cover the following recipes to get you started on writing the Nmap Scripting Engine (NSE) scripts:

  • Making HTTP requests to identify vulnerable Supermicro IPMI/BMC controllers
  • Sending UDP payloads using NSE sockets
  • Generating vulnerability reports in NSE scripts
  • Exploiting an SMB vulnerability
  • Writing brute-force password auditing scripts
  • Crawling web servers to detect vulnerabilities
  • Working with NSE threads, condition variables, and mutexes in NSE
  • Writing a new NSE library in Lua
  • Writing a new NSE library in C/C++
  • Getting your scripts ready for submission

NSE was introduced in 2007 in version 4.5, and it extended its functionality to a whole new level using the information gathered during a network scan and performing additional tasks powered by the scripting language Lua. This feature has become a whole arsenal by itself, with more than 600 scripts distributed officially...