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File http-form-brute

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

User Summary

Performs brute force password auditing against http form-based authentication.

Script Arguments

http-form-brute.path

points to the path protected by authentication

http-form-brute.onfailure

(optional) sets the message to expect on unsuccessful authentication

http-form-brute.passvar

sets the http-variable name that holds the password used to authenticate. A simple autodetection of this variable is attempted.

http-form-brute.onsuccess

(optional) sets the message to expect on successful authentication

http-form-brute.uservar

(optional) sets the http-variable name that holds the username used to authenticate. A simple autodetection of this variable is attempted.

http-form-brute.hostname

sets the host header in case of virtual hosting

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

See the documentation for the unpwdb library.

http.max-cache-size, http.max-pipeline, http.pipeline, http.useragent

See the documentation for the http library.

smbdomain, smbhash, smbnoguest, smbpassword, smbtype, smbusername

See the documentation for the smbauth library.

unittest.run

See the documentation for the unittest library.

Example Usage

nmap --script http-form-brute -p 80 <host>

This script uses the unpwdb and brute libraries to perform password
guessing. Any successful guesses are stored in the nmap registry, under
the nmap.registry.credentials.http key for other scripts to use.

The script automatically attempts to discover the form field names to
use in order to perform password guessing. If it fails doing so the form
parameters can be supplied using the uservar and passvar arguments.

After attempting to authenticate using a HTTP POST request the script
analyzes the response and attempt to determine whether authentication was
successful or not. The script analyzes this by checking the response using
the following rules:
   1. If the response was empty the authentication was successful
   2. If the response contains the message passed in the onsuccess
      argument the authentication was successful
   3. If no onsuccess argument was passed, and if the response
      does not contain the message passed in the onfailure argument the
      authentication was successful
   4. If neither the onsuccess or onfailure argument was passed and the
      response does not contain a password form field authentication
      was successful
   5. Authentication failed

Script Output

PORT     STATE SERVICE REASON
80/tcp   open  http    syn-ack
| http-brute:
|   Accounts
|     Patrik Karlsson:secret => Login correct
|   Statistics
|_    Perfomed 60023 guesses in 467 seconds, average tps: 138

Summary
-------
  x The Driver class contains the driver implementation used by the brute
    library

Requires


Author: Patrik Karlsson

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

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