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

Enumerating SMB sessions

SMB sessions reflect people connected to file shares or making RPC calls and they can provide invaluable information that can be used to profile users and machines. The SMB session information includes usernames, origin IP addresses, and even idle time. Because this information can be used to launch other attacks, listing SMB sessions remotely can be very handy as a penetration tester.

This recipe shows how to enumerate SMB sessions of Windows machines with Nmap.

How to do it...

Open your terminal and enter the following Nmap command:

$ nmap -p445 --script smb-enum-sessions <target>  

Local users on the system will be listed, as well as the SMB connections detected:

   Host script results: 
| smb-enum-sessions:
| Users...