local ipOps = require "ipOps" local nmap = require "nmap" local packet = require "packet" local stdnse = require "stdnse" local string = require "string" local target = require "target" description = [[ Discovers Sonicwall firewalls which are directly attached (not routed) using the same method as the manufacturers own 'SetupTool'. An interface needs to be configured, as the script broadcasts a UDP packet. The script needs to be run as a privileged user, typically root. References: * https://support.software.dell.com/kb/sw3677) ]] --- -- @usage -- nmap -e eth0 --script broadcast-sonicwall-discover -- -- @output -- | broadcast-sonicwall-discover: -- | 192.168.5.1 -- | MAC/Serial: 0006B1001122 -- | Subnetmask: 255.255.255.0 -- | Firmware: 3.9.1.2 -- |_ ROM: 14.0.1.1 -- -- @args broadcast-sonicwall-discover.timeout time in seconds to wait for a response -- (default: 1s) author = "Raphael Hoegger" license = "Same as Nmap--See http://nmap.org/book/man-legal.html" categories = {"broadcast", "safe"} -- preliminary checks local interface = stdnse.get_script_args(SCRIPT_NAME .. ".interface") or nmap.get_interface() prerule = function() if not nmap.is_privileged() then stdnse.print_verbose("%s not running for lack of privileges.", SCRIPT_NAME) return false end local has_interface = ( interface ~= nil ) if ( not(has_interface) ) then stdnse.print_verbose("%s no network interface was supplied, aborting ...", SCRIPT_NAME) return false end return true end action = function(host, port) local sock, co sock = nmap.new_socket() local timeout = stdnse.parse_timespec(stdnse.get_script_args(SCRIPT_NAME .. ".timeout")) timeout = (timeout or 1) * 1000 -- listen for a response sock:set_timeout(timeout) sock:pcap_open(interface, 1500, false, "ip && udp && port 26214 && greater 57") send_discover() local start_time = nmap.clock_ms() local results = stdnse.output_table() while( nmap.clock_ms() - start_time < timeout ) do local status, plen, _, layer3 = sock:pcap_receive() -- stop once we picked up our response if ( status ) then sock:close() local p = packet.Packet:new( layer3, #layer3) if ( p and p.udp_dport ) then -- parsing the result local IP = string.sub(layer3:sub(41), 0,4) IP = ipOps.str_to_ip(IP) local Netmask = string.sub(layer3:sub(45), 0,4) Netmask = ipOps.str_to_ip(Netmask) local Serial = string.sub(layer3:sub(49), 0,6) Serial = stdnse.tohex(Serial) local Romversion = string.sub(layer3:sub(55), 0,2) local ROMM = stdnse.tohex(Romversion, {separator=".", group=1}) ROMM = string.gsub(ROMM, "[0-9a-f]", function(n) return tonumber(n, 16) end) local Firmwareversion = string.sub(layer3:sub(57), 0,2) local FIRMM = stdnse.tohex(Firmwareversion, {separator=".", group=1}) FIRMM = string.gsub(FIRMM, "[0-9a-f]", function(n) return tonumber(n, 16) end) -- add nodes if target.ALLOW_NEW_TARGETS then target.add(IP) end local output = stdnse.output_table() output['MAC/Serial'] = Serial output['Subnetmask'] = Netmask output['Firmware'] = FIRMM output['ROM Version'] = ROMM results[IP] = output end end sock:close() end if #results > 0 then return results end end function send_discover() local host="255.255.255.255" local port="26214" local socket = nmap.new_socket("udp") local status = socket:sendto(host, port, "ackfin ping\00") if not status then return end socket:close() return true end