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upnp-info.nse
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2009-07-06
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163 lines
description = [[
Attempts to extract system information from the UPnP service.
]]
---
-- @output
-- | upnp-info: System/1.0 UPnP/1.0 IGD/1.0
-- |_ Location: http://192.168.1.1:80/UPnP/IGD.xml
author = "Thomas Buchanan <tbuchanan@thecompassgrp.net>"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"default", "safe"}
require("stdnse")
require("shortport")
require("strbuf")
---
-- Runs on UDP port 1900
portrule = shortport.portnumber(1900, "udp", {"open", "open|filtered"})
---
-- Sends UPnP discovery packet to host,
-- and extracts service information from results
action = function(host, port)
-- create the socket used for our connection
local socket = nmap.new_socket()
-- set a reasonable timeout value
socket:set_timeout(5000)
-- do some exception handling / cleanup
local catch = function()
socket:close()
end
local try = nmap.new_try(catch)
-- connect to the potential UPnP system
try(socket:connect(host.ip, port.number, "udp"))
local payload = strbuf.new()
-- for details about the UPnP message format, see http://upnp.org/resources/documents.asp
payload = payload .. "M-SEARCH * HTTP/1.1\r\n"
payload = payload .. "Host:239.255.255.250:1900\r\n"
payload = payload .. "ST:upnp:rootdevice\r\n"
payload = payload .. "Man:\"ssdp:discover\"\r\n"
payload = payload .. "MX:3\r\n\r\n"
try(socket:send(strbuf.dump(payload)))
local status
local response
-- read in any response we might get
status, response = socket:receive_bytes(1)
if (not status) or (response == "TIMEOUT") then
socket:close()
return
end
-- since we got something back, the port is definitely open
nmap.set_port_state(host, port, "open")
-- buffer to hold script output
local output
if response ~= nil then
-- We should get a response back that has contains one line for the server, and one line for the xml file location
-- these match any combination of upper and lower case responses
local server, location
server = string.match(response, "[Ss][Ee][Rr][Vv][Ee][Rr]:(.-)\010")
if server ~= nil then output = server .. "\n" end
location = string.match(response, "[Ll][Oo][Cc][Aa][Tt][Ii][Oo][Nn]:(.-)\010")
if location ~= nil then
output = output .. "Location: " .. location
local v = nmap.verbosity()
-- the following check can output quite a lot of information, so we require at least one -v flag
if v > 0 then
-- split the location into an IP address, port, and path name for the xml file
local xhost, xport, xfile
xhost = string.match(location, "http://(.-)/")
-- check to see if the host portionof the location specifies a port
-- if not, use port 80 as a standard web server port
if xhost ~= nil and string.match(xhost, ":") then
xport = string.match(xhost, ":(.*)")
xhost = string.match(xhost, "(.*):")
end
if xport == nil then
xport = 80
end
-- check if the IP address in the location matches the IP address we're scanning
-- if not, alert the user, but continue to scan the IP address we're interested in
if xhost ~= host.ip then
output = output .. "\n !! Location did not match target IP address !! "
-- return output
xhost = host.ip
end
-- extract the path name from the location field, but strip off the \r that HTTP servers return
xfile = string.match(location, "http://.-/(.-)\013")
if xfile ~= nil then
strbuf.clear(payload)
-- create an HTTP request for the file, using the host and port we extracted earlier
payload = payload .. "GET /" .. xfile .. " HTTP/1.1\r\n"
payload = payload .. "Accept: text/xml, application/xml, text/html\r\n"
payload = payload .. "User-Agent: Mozilla/5.0 (compatible; Nmap Scripting Engine; http://nmap.org/book/nse.html)\r\n"
payload = payload .. "Host: " .. xhost .. ":" .. xport .. "\r\n"
payload = payload .. "Connection: Keep-Alive\r\n"
payload = payload .. "Cache-Control: no-cache\r\n"
payload = payload .. "Pragma: no-cache\r\n\r\n"
socket = nmap.new_socket()
socket:set_timeout(5000)
try(socket:connect(xhost, xport, "tcp"))
try(socket:send(strbuf.dump(payload)))
-- we're expecting an xml file, and for UPnP purposes it should end in </root>
status, response = socket:receive_buf("</root>", true)
if (status) and (response ~= "TIMEOUT") then
if string.match(response, "HTTP/1.%d 200") then
local webserver
-- extract information about the webserver that is handling responses for the UPnP system
webserver = string.match(response, "[Ss][Ee][Rr][Vv][Ee][Rr]:(.-)\010")
if webserver ~= nil then output = output .. "\nWebserver: " .. webserver end
-- the schema for UPnP includes a number of <device> entries, which can a number of interesting fields
for device in string.gmatch(response, "<deviceType>(.-)</UDN>") do
local fn, mnf, mdl, nm, ver
fn = string.match(device, "<friendlyName>(.-)</friendlyName>")
mnf = string.match(device, "<manufacturer>(.-)</manufacturer>")
mdl = string.match(device, "<modelDescription>(.-)</modelDescription>")
nm = string.match(device, "<modelName>(.-)</modelName>")
ver = string.match(device, "<modelNumber>(.-)</modelNumber>")
if fn ~= nil then output = output .. "\n Name: " .. fn end
if mnf ~= nil then output = output .. "\n Manufacturer: " .. mnf end
if mdl ~= nil then output = output .. "\n Model Descr: " .. mdl end
if nm ~= nil then output = output .. "\n Model Name: " .. nm end
if ver ~= nil then output = output .. "\n Model Version: " .. ver end
end
end
end
socket:close()
end
end
end
return output
end
end