File smb-flood
Script types:
hostrule
Categories:
intrusive, dos
Download: http://nmap.org/svn/scripts/smb-flood.nse
User Summary
Exhausts a remote SMB server's connection limit by by opening as many connections as we can. Most implementations of SMB have a hard global limit of 11 connections for user accounts and 10 connections for anonymous. Once that limit is reached, further connections are denied. This script exploits that limit by taking up all the connections and holding them.
This works better with a valid user account, because Windows reserves one slot for valid users. So, no matter how many anonymous connections are taking up spaces, a single valid user can still log in.
This is *not* recommended as a general purpose script, because a) it is designed to harm the server and has no useful output, and b) it never ends (until timeout).
Script Arguments
randomseed, smbbasic, smbport, smbsign
See the documentation for the smb library.smbdomain, smbhash, smbnoguest, smbpassword, smbtype, smbusername
See the documentation for the smbauth library.Example Usage
nmap --script smb-flood.nse -p445 <host> sudo nmap -sU -sS --script smb-flood.nse -p U:137,T:139 <host>
Script Output
n/a
Requires
Author: Ron Bowes
License: Same as Nmap--See http://nmap.org/book/man-legal.html