114 lines
2.8 KiB
Lua
114 lines
2.8 KiB
Lua
local brute = require "brute"
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local creds = require "creds"
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local membase = require "membase"
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local shortport = require "shortport"
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local stdnse = require "stdnse"
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description = [[
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Performs brute force password auditing against Couchbase Membase servers.
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]]
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---
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-- @usage
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-- nmap -p 11211 --script membase-brute
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--
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-- @output
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-- PORT STATE SERVICE
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-- 11211/tcp open unknown
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-- | membase-brute:
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-- | Accounts
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-- | buckettest:toledo - Valid credentials
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-- | Statistics
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-- |_ Performed 5000 guesses in 2 seconds, average tps: 2500
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--
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-- @args membase-brute.bucketname if specified, password guessing is performed
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-- only against this bucket.
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--
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author = "Patrik Karlsson"
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license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
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categories = {"intrusive", "brute"}
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portrule = shortport.port_or_service({11210,11211}, "couchbase-tap", "tcp")
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local arg_bucketname = stdnse.get_script_args(SCRIPT_NAME..".bucketname")
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Driver = {
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new = function(self, host, port, options)
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local o = { host = host, port = port, options = options }
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setmetatable(o, self)
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self.__index = self
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return o
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end,
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connect = function(self)
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self.helper = membase.Helper:new(self.host, self.port)
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return self.helper:connect(brute.new_socket())
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end,
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login = function(self, username, password)
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local status, response = self.helper:login(arg_bucketname or username, password)
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if ( not(status) and "Auth failure" == response ) then
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return false, brute.Error:new( "Incorrect password" )
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elseif ( not(status) ) then
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local err = brute.Error:new( response )
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err:setRetry( true )
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return false, err
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end
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return true, creds.Account:new( arg_bucketname or username, password, creds.State.VALID)
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end,
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disconnect = function(self)
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return self.helper:close()
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end
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}
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local function fail(err) return stdnse.format_output(false, err) end
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local function getMechs(host, port)
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local helper = membase.Helper:new(host, port)
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local status, err = helper:connect()
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if ( not(status) ) then
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return false, "Failed to connect to server"
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end
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local status, response = helper:getSASLMechList()
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if ( not(status) ) then
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stdnse.debug2("Received unexpected response: %s", response)
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return false, "Received unexpected response"
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end
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helper:close()
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return true, response.mechs
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end
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action = function(host, port)
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local status, mechs = getMechs(host, port)
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if ( not(status) ) then
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return fail(mechs)
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end
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if ( not(mechs:match("PLAIN") ) ) then
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return fail("Unsupported SASL mechanism")
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end
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local result
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local engine = brute.Engine:new(Driver, host, port )
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engine.options.script_name = SCRIPT_NAME
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engine.options.firstonly = true
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if ( arg_bucketname ) then
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engine.options:setOption( "passonly", true )
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end
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status, result = engine:start()
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return result
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end
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