Enhancements for SMB2 support in NMAP Script Engine

Why

The smb2 implementation that is part of NMAP lacks support for parsing
NEGOTIATE_CONTEXT structures that can be used to determine hosts
that might be vulnerable to CVE-2020-0796. The code in this repository
adds that functionality.

Usage

The modified smb2.lua library and the modified
smb2-capabilities.nse sript are intended to be used with NMAP 7.70.

Copy or symlink smb2.lua to ~/.nmap/nselib/ and use the NSE script
on a host:

nmap --script=`pwd`/smb2-capabilities.nse $IP

Author

Hilko Bengen <bengen@hilluzination.de>