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108 lines
2.9 KiB
Lua
108 lines
2.9 KiB
Lua
description=[[
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Performs brute force password auditing against a OpenVAS vulnerability scanner daemon using the OTP 1.0 protocol.
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]]
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---
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-- @output
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-- PORT STATE SERVICE REASON VERSION
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-- 9391/tcp open ssl/openvas syn-ack
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-- | openvas-otp-brute:
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-- | Accounts
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-- | openvas:openvas - Valid credentials
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-- | Statistics
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-- |_ Performed 4 guesses in 4 seconds, average tps: 1
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--
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-- @args openvas-otp-brute.threads sets the number of threads. Default: 4
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author = "Vlatko Kosturjak"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"intrusive", "brute"}
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require "shortport"
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require "brute"
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require "comm"
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require "stdnse"
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stdnse.silent_require('openssl')
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portrule = shortport.port_or_service({9390,9391}, "openvas", "tcp")
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Driver =
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{
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new = function (self, host, port)
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local o = { host = host, port = port }
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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.socket = nmap.new_socket()
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if ( not(self.socket:connect(self.host, self.port, "ssl")) ) then
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return false
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end
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return true
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end,
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login = function( self, username, password )
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local status, err = self.socket:send("< OTP/1.0 >\n")
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if ( not ( status ) ) then
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local err = brute.Error:new( "Unable to send handshake" )
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err:setAbort(true)
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return false, err
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end
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local response
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status, response = self.socket:receive_buf("\r?\n", false)
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if ( not(status) or response ~= "< OTP/1.0 >" ) then
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local err = brute.Error:new( "Bad handshake from server: "..response )
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err:setAbort(true)
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return false, err
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end
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status, err = self.socket:send(username.."\n")
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if ( not(status) ) then
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local err = brute.Error:new( "Couldn't send user: "..username )
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err:setAbort( true )
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return false, err
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end
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status, err = self.socket:send(password.."\n")
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if ( not(status) ) then
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local err = brute.Error:new( "Couldn't send password: "..password )
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err:setAbort( true )
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return false, err
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end
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-- Create a buffer and receive the first line
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status, line = self.socket:receive_buf("\r?\n", false)
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if (line == nil or string.match(line,"Bad login")) then
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stdnse.print_debug(2, "openvas-otp-brute: Bad login: %s/%s", username, password)
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return false, brute.Error:new( "Bad login" )
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elseif (string.match(line,"SERVER <|>")) then
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stdnse.print_debug(1, "openvas-otp-brute: Good login: %s/%s", username, password)
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return true, brute.Account:new(username, password, creds.State.VALID)
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end
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stdnse.print_debug(1, "openvas-otp-brute: WARNING: Unhandled response: %s", line)
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return false, brute.Error:new( "unhandled response" )
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end,
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disconnect = function( self )
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self.socket:close()
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end,
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}
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action = function(host, port)
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local engine = brute.Engine:new(Driver, host, port)
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engine:setMaxThreads(1)
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engine.options.script_name = SCRIPT_NAME
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status, result = engine:start()
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return result
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end
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