Nmap nessus-xmlrpc-brute NSE Script


This page contains detailed information about how to use the nessus-xmlrpc-brute NSE script. For list of all NSE scripts, visit the Nmap NSE Library.

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Overview
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Script Overview

Script source code: https://github.com/nmap/nmap/tree/master/scripts/nessus-xmlrpc-brute.nse
Script categories: intrusive, brute
Target service / protocol: ssl/http, tcp
Target network port(s): 8834
List of CVEs: -

Script Description

The nessus-xmlrpc-brute.nse script performs brute force password auditing against a Nessus vulnerability scanning daemon using the XMLRPC protocol.

Nessus-xmlrpc-brute NSE Script Arguments

This is a full list of arguments supported by the nessus-xmlrpc-brute.nse script:

nessus-xmlrpc-brute.threads

Sets the number of threads.

nessus-xmlrpc-brute.timeout

Socket timeout for connecting to Nessus (default 5s)

creds.global

Credentials to be returned by Credentials.getCredentials regardless of the service.

creds.[service]

Credentials to be returned by Credentials.getCredentials for [service]. E.g. creds.http=admin:password

passdb

The filename of an alternate password database. Default: nselib/data/passwords.lst

unpwdb.passlimit

The maximum number of passwords passwords will return (default unlimited).

unpwdb.timelimit

The maximum amount of time that any iterator will run before stopping. The value is in seconds by default and you can follow it with ms, s, m, or h for milliseconds, seconds, minutes, or hours. For example, unpwdb.timelimit=30m or unpwdb.timelimit=.5h for 30 minutes. The default depends on the timing template level (see the module description). Use the value 0 to disable the time limit.

unpwdb.userlimit

The maximum number of usernames usernames will return (default unlimited).

userdb

The filename of an alternate username database. Default: nselib/data/usernames.lst

brute.credfile

A file containing username and password pairs delimited by '/'

brute.delay

The number of seconds to wait between guesses (default: 0)

brute.emptypass

Guess an empty password for each user (default: false)

brute.firstonly

Stop guessing after first password is found (default: false)

brute.guesses

The number of guesses to perform against each account. (default: 0 (unlimited)). The argument can be used to prevent account lockouts.

brute.mode

Can be user, pass or creds and determines what mode to run the engine in.

  • user - the unpwdb library is used to guess passwords, every password Password is tried for each user. (The user iterator is in the outer loop)
  • pass - the unpwdb library is used to guess passwords, each password Is tried for every user. (The password iterator is in the outer loop)
  • creds - a set of credentials (username and password pairs) are Guessed against the service. This allows for lists of known or common username and password combinations to be tested. If no mode is specified and the script has not added any custom iterator the pass mode will be enabled.

brute.passonly

Iterate over passwords only for services that provide only a password for authentication. (default: false)

brute.retries

The number of times to retry if recoverable failures occur. (default: 2)

brute.start

The number of threads the engine will start with. (default: 5).

brute.threads

The number of initial worker threads, the number of active threads will be automatically adjusted.

brute.unique

Make sure that each password is only guessed once (default: true)

brute.useraspass

Guess the username as password for each user (default: true)

creds.[service]

Credentials to be returned by Credentials.getCredentials for [service]. E.g. creds.http=admin:password

- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=nessus-xmlrpc-brute --script-args nessus-xmlrpc-brute.threads=value,nessus-xmlrpc-brute.timeout=value <target>

Nessus-xmlrpc-brute NSE Script Example Usage

Here's an example of how to use the nessus-xmlrpc-brute.nse script:

nmap --script=nessus-xmlrpc-brute <target>

Nessus-xmlrpc-brute NSE Script Example Output

Here's a sample output from the nessus-xmlrpc-brute.nse script:

PORT     STATE SERVICE REASON
8834/tcp open  unknown syn-ack
| nessus-xmlrpc-brute:
|   Accounts
|     nessus:nessus - Valid credentials
|   Statistics
|_    Performed 1933 guesses in 26 seconds, average tps: 73

Nessus-xmlrpc-brute NSE Script Example XML Output

There is no sample XML output for this module. However, by providing the -oX <file> option, Nmap will produce a XML output and save it in the file.xml file.

Author

  • Patrik Karlsson

References

See Also

Related NSE scripts to the nessus-xmlrpc-brute.nse script:

Visit Nmap NSE Library for more scripts.

The nessus-xmlrpc-brute.nse script may fail with the following error messages. Check for the possible causes by using the code snippets highlighted below found in the script source code. This can often times help in identifying the root cause of the problem.

Failed to connect to server

Here is a relevant code snippet related to the "Failed to connect to server" error message:

51:	  local socket = brute.new_socket()
52:	  socket:set_timeout(arg_timeout)
53:	
54:	  local status, err = socket:connect(host, port)
55:	  if ( not(status) ) then
56:	    return false, "Failed to connect to server"
57:	  end
58:	  local status, err = socket:send(data)
59:	  if ( not(status) ) then
60:	    return false, "Failed to send request to server"
61:	  end

Failed to send request to server

Here is a relevant code snippet related to the "Failed to send request to server" error message:

55:	  if ( not(status) ) then
56:	    return false, "Failed to connect to server"
57:	  end
58:	  local status, err = socket:send(data)
59:	  if ( not(status) ) then
60:	    return false, "Failed to send request to server"
61:	  end
62:	  local status, response = socket:receive()
63:	  socket:close()
64:	  if ( not(status) ) then
65:	    return false, "Failed to receive response from server"

Failed to receive response from server

Here is a relevant code snippet related to the "Failed to receive response from server" error message:

60:	    return false, "Failed to send request to server"
61:	  end
62:	  local status, response = socket:receive()
63:	  socket:close()
64:	  if ( not(status) ) then
65:	    return false, "Failed to receive response from server"
66:	  end
67:	  return status, response
68:	end
69:	
70:	Driver =

^HTTP/1.1 200 OK.*<status>ERROR</status>

Here is a relevant code snippet related to the "^HTTP/1.1 200 OK.*<status>ERROR</status>" error message:

82:	
83:	    local status, response = authenticate(self.host, self.port, username, password)
84:	    if ( status and response ) then
85:	      if ( response:match("^HTTP/1.1 200 OK.*<status>OK</status>") ) then
86:	        return true, creds.Account:new(username, password, creds.State.VALID)
87:	      elseif ( response:match("^HTTP/1.1 200 OK.*<status>ERROR</status>") ) then
88:	        return false, brute.Error:new("incorrect login")
89:	      end
90:	    end
91:	    local err = brute.Error:new( "incorrect response from server" )
92:	    err:setRetry(true)

incorrect login

Here is a relevant code snippet related to the "incorrect login" error message:

83:	    local status, response = authenticate(self.host, self.port, username, password)
84:	    if ( status and response ) then
85:	      if ( response:match("^HTTP/1.1 200 OK.*<status>OK</status>") ) then
86:	        return true, creds.Account:new(username, password, creds.State.VALID)
87:	      elseif ( response:match("^HTTP/1.1 200 OK.*<status>ERROR</status>") ) then
88:	        return false, brute.Error:new("incorrect login")
89:	      end
90:	    end
91:	    local err = brute.Error:new( "incorrect response from server" )
92:	    err:setRetry(true)
93:	    return false, err

incorrect response from server

Here is a relevant code snippet related to the "incorrect response from server" error message:

86:	        return true, creds.Account:new(username, password, creds.State.VALID)
87:	      elseif ( response:match("^HTTP/1.1 200 OK.*<status>ERROR</status>") ) then
88:	        return false, brute.Error:new("incorrect login")
89:	      end
90:	    end
91:	    local err = brute.Error:new( "incorrect response from server" )
92:	    err:setRetry(true)
93:	    return false, err
94:	  end,
95:	
96:	  disconnect = function( self ) return true end,

Failed to detect Nessus Web server

Here is a relevant code snippet related to the "Failed to detect Nessus Web server" error message:

114:	      return fail(response)
115:	    end
116:	  end
117:	
118:	  if ( not(response:match("^HTTP/1.1 200 OK.*Server: NessusWWW.*<status>ERROR</status>")) ) then
119:	    return fail("Failed to detect Nessus Web server")
120:	  end
121:	
122:	  local engine = brute.Engine:new(Driver, host, port)
123:	  if ( arg_threads ) then
124:	    engine:setMaxThreads(arg_threads)

Version

This page has been created based on Nmap version 7.92.

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