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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
Languages
Tools
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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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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

Querying Shodan to obtain target information


Shodan is a search engine for Internet-connected devices. It is a useful source of information where we can find port and banner information of remote targets. One of the advantages is that we don't even need to send a single packet directly to the target to obtain juicy host information, including port number, protocol, and service banner.

In this recipe, you will learn how to use Shodan to obtain port and version information from a remote host with Nmap.

Getting ready

The NSE script shodan-api needs an API key before it can be used. Shodan offers a free developer API that you can obtain from 

https://developer.shodan.io/.

Make sure that you have your Shodan API key at hand before continuing.

How to do it...

To obtain host information of a remote target from Shodan, use the following command:

$nmap -sn -Pn -n --script shodan-api --script-args shodan-api.apikey=<ShodanAPI KEY> <target>

The results will contain all the host information available...

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