vmauthd-brute
NSE detection rule by Patrik Karlsson · Same as Nmap--See https://nmap.org/book/man-legal.html
Performs brute force password auditing against the VMWare Authentication Daemon (vmware-authd).
local brute = require "brute"
local creds = require "creds"
local match = require "match"
local nmap = require "nmap"
local shortport = require "shortport"
local stdnse = require "stdnse"
description = [[
Performs brute force password auditing against the VMWare Authentication Daemon (vmware-authd).
]]
---
-- @usage
-- nmap -p 902 <ip> --script vmauthd-brute
--
-- @output
-- PORT STATE SERVICE
-- 902/tcp open iss-realsecure
-- | vmauthd-brute:
-- | Accounts
-- | root:00000 - Valid credentials
-- | Statistics
-- |_ Performed 183 guesses in 40 seconds, average tps: 4
--
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"brute", "intrusive"}
portrule = shortport.port_or_service(902, {"ssl/vmware-auth", "vmware-auth"}, "tcp")
local function fail(err) return stdnse.format_output(false, err) end
Driver = {
new = function(self, host, port, options)
local o = { host = host, port = port }
setmetatable(o, self)
self.__index = self
return o
end,
connect = function(self)
self.socket = brute.new_socket()
return self.socket:connect(self.host, self.port)
end,
login = function(self, username, password)
local status, line = self.socket:receive_buf(match.pattern_limit("\r\n", 2048), false)
if ( line:match("^220 VMware Authentication Daemon.*SSL Required") ) then
self.socket:reconnect_ssl()
end
status = self.socket:send( ("USER %s\r\n"):format(username) )
if ( not(status) ) then
local err = brute.Error:new( "Failed to send data to server" )
err:setRetry( true )
return false, err
end
local status, response = self.socket:receive_buf(match.pattern_limit("\r\n", 2048), false)
if ( not(status) or not(response:match("^331") ) ) then
local err = brute.Error:new( "Received unexpected response from server" )
err:setRetry( true )
return false, err
end
status = self.socket:send( ("PASS %s\r\n"):format(password) )
if ( not(status) ) then
local err = brute.Error:new( "Failed to send data to server" )
err:setRetry( true )
return false, err
end
status, response = self.socket:receive_buf(match.pattern_limit("\r\n", 2048), false)
if ( response:match("^230") ) then
return true, creds.Account:new(username, password, creds.State.VALID)
end
return false, brute.Error:new( "Login incorrect" )
end,
disconnect = function(self)
return self.socket:close()
end
}
local function checkAuthd(host, port)
local socket = nmap.new_socket()
local status = socket:connect(host, port)
if( not(status) ) then
return false, "Failed to connect to server"
end
local status, line = socket:receive_buf(match.pattern_limit("\r\n", 2048), false)
socket:close()
if ( not(status) ) then
return false, "Failed to receive response from server"
end
if ( not( line:match("^220 VMware Authentication Daemon") ) ) then
return false, "Failed to detect VMWare Authentication Daemon"
end
return true
end
action = function(host, port)
local status, err = checkAuthd(host, port)
if ( not(status) ) then
return fail(err)
end
local engine = brute.Engine:new(Driver, host, port)
engine.options.script_name = SCRIPT_NAME
local result
status, result = engine:start()
return result
end