Script smtp-brute

Script types: portrule
Categories: brute, intrusive
Download: https://svn.nmap.org/nmap/scripts/smtp-brute.nse

Script Summary

Performs brute force password auditing against SMTP servers using either LOGIN, PLAIN, CRAM-MD5, DIGEST-MD5 or NTLM authentication.

Script Arguments

smtp-brute.auth

authentication mechanism to use LOGIN, PLAIN, CRAM-MD5, DIGEST-MD5 or NTLM

creds.[service], creds.global

See the documentation for the creds library.

smbdomain, smbhash, smbnoguest, smbpassword, smbtype, smbusername

See the documentation for the smbauth library.

brute.credfile, brute.delay, brute.emptypass, brute.firstonly, brute.guesses, brute.mode, brute.passonly, brute.retries, brute.start, brute.threads, brute.unique, brute.useraspass

See the documentation for the brute library.

smtp.domain

See the documentation for the smtp library.

passdb, unpwdb.passlimit, unpwdb.timelimit, unpwdb.userlimit, userdb

See the documentation for the unpwdb library.

Example Usage

nmap -p 25 --script smtp-brute <host>

Script Output 

PORT    STATE SERVICE REASON
25/tcp  open  stmp    syn-ack
| smtp-brute:
|   Accounts
|     braddock:jules - Valid credentials
|     lane:sniper - Valid credentials
|     parker:scorpio - Valid credentials
|   Statistics
|_    Performed 1160 guesses in 41 seconds, average tps: 33

Requires

Author:

  • Patrik Karlsson

License: Same as Nmap--See https://nmap.org/book/man-legal.html