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|
local brute = require "brute"
local coroutine = require "coroutine"
local creds = require "creds"
local shortport = require "shortport"
local stdnse = require "stdnse"
local xmpp = require "xmpp"
description = [[
Performs brute force password auditing against XMPP (Jabber) instant messaging servers.
]]
---
-- @usage
-- nmap -p 5222 --script xmpp-brute <host>
--
-- @output
-- PORT STATE SERVICE
-- 5222/tcp open xmpp-client
-- | xmpp-brute:
-- | Accounts
-- | CampbellJ:arthur321 - Valid credentials
-- | CampbellA:joan123 - Valid credentials
-- | WalkerA:auggie123 - Valid credentials
-- | Statistics
-- |_ Performed 6237 guesses in 5 seconds, average tps: 1247
--
-- @args xmpp-brute.auth authentication mechanism to use LOGIN, PLAIN, CRAM-MD5
-- or DIGEST-MD5
-- @args xmpp-brute.servername needed when host name cannot be automatically
-- determined (eg. when running against an IP,
-- instead of hostname)
--
-- Version 0.1
-- Created 07/21/2011 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"brute", "intrusive"}
portrule = shortport.port_or_service(5222, {"jabber", "xmpp-client"})
local mech
ConnectionPool = {}
Driver =
{
-- Creates a new driver instance
-- @param host table as received by the action method
-- @param port table as received by the action method
-- @param pool an instance of the ConnectionPool
new = function(self, host, port, options )
local o = { host = host, port = port, options = options }
setmetatable(o, self)
self.__index = self
return o
end,
-- Connects to the server (retrieves a connection from the pool)
connect = function( self )
self.helper = ConnectionPool[coroutine.running()]
if ( not(self.helper) ) then
self.helper = xmpp.Helper:new( self.host, self.port, self.options )
local status, err = self.helper:connect(brute.new_socket())
if ( not(status) ) then return false, err end
ConnectionPool[coroutine.running()] = self.helper
end
return true
end,
-- Attempts to login to the server
-- @param username string containing the username
-- @param password string containing the password
-- @return status true on success, false on failure
-- @return brute.Error on failure and creds.Account on success
login = function( self, username, password )
local status, err = self.helper:login( username, password, mech )
if ( status ) then
self.helper:close()
self.helper:connect()
return true, creds.Account:new(username, password, creds.State.VALID)
end
if ( err:match("^ERROR: Failed to .* data$") ) then
self.helper:close()
self.helper:connect()
local err = brute.Error:new( err )
-- This might be temporary, set the retry flag
err:setRetry( true )
return false, err
end
return false, brute.Error:new( "Incorrect password" )
end,
-- Disconnects from the server (release the connection object back to
-- the pool)
disconnect = function( self )
return true
end,
}
local function fail(err) return stdnse.format_output(false, err) end
action = function(host, port)
local options = { servername = stdnse.get_script_args("xmpp-brute.servername") }
local helper = xmpp.Helper:new(host, port, options)
local status, err = helper:connect()
if ( not(status) ) then
return fail("Failed to connect to XMPP server")
end
local mechs = helper:getAuthMechs()
if ( not(mechs) ) then
return fail("Failed to retrieve authentication mechs from XMPP server")
end
local mech_prio = stdnse.get_script_args("xmpp-brute.auth")
mech_prio = ( mech_prio and { mech_prio } ) or { "PLAIN", "LOGIN", "CRAM-MD5", "DIGEST-MD5"}
for _, mp in ipairs(mech_prio) do
for m, _ in pairs(mechs) do
if ( mp == m ) then mech = m; break end
end
if ( mech ) then break end
end
if ( not(mech) ) then
return fail("Failed to find suitable authentication mechanism")
end
local engine = brute.Engine:new(Driver, host, port, options)
engine.options.script_name = SCRIPT_NAME
local result
status, result = engine:start()
return result
end
|
