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Nmap: Network Exploration and Security Auditing Cookbook

You're reading from   Nmap: Network Exploration and Security Auditing Cookbook Network discovery and security scanning at your fingertips

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Product type Paperback
Published in May 2017
Publisher
ISBN-13 9781786467454
Length 416 pages
Edition 2nd Edition
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Author (1):
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Paulino Calderon Paulino Calderon
Author Profile Icon Paulino Calderon
Paulino Calderon
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Toc

Table of Contents (18) Chapters Close

Preface 1. Nmap Fundamentals 2. Network Exploration FREE CHAPTER 3. Reconnaissance Tasks 4. Scanning Web Servers 5. Scanning Databases 6. Scanning Mail Servers 7. Scanning Windows Systems 8. Scanning ICS SCADA Systems 9. Optimizing Scans 10. Generating Scan Reports 11. Writing Your Own NSE Scripts 12. HTTP, HTTP Pipelining, and Web Crawling Configuration Options 13. Brute Force Password Auditing Options 14. NSE Debugging 15. Additional Output Options 16. Introduction to Lua 17. References and Additional Reading

Sending UDP payloads using NSE sockets

The Nmap Scripting Engine offers a robust library for handling networking I/O operations by providing an interface to Nsock. Nsock is Nmap's optimized parallel sockets library, and its flexibility allows developers to handle raw packets and decide whether to use blocking or nonblocking network I/O operations.

This recipe will go through the process of writing an NSE script that reads a payload from a file and sends a UDP packet to exploit a vulnerability in Huawei HG5xx routers, to highlight how straightforward NSE sockets can be.

How to do it...

Huawei HG5xx routers reveal sensitive information when they receive a special packet to UDP port 43690. This vulnerability caught my attention because this is a very popular device...

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