local comm = require "comm" local nmap = require "nmap" local shortport = require "shortport" local string = require "string" description = [[ Detects the Skype version 2 service. ]] --- -- @output -- PORT STATE SERVICE VERSION -- 80/tcp open skype2 Skype author = "Brandon Enright" license = "Same as Nmap--See http://nmap.org/book/man-legal.html" categories = {"version"} portrule = function(host, port) return (port.number == 80 or port.number == 443 or port.service == nil or port.service == "" or port.service == "unknown") and port.protocol == "tcp" and port.state == "open" and port.service ~= "http" and port.service ~= "ssl/http" and not(shortport.port_is_excluded(port.number,port.protocol)) end action = function(host, port) local status, result = comm.exchange(host, port, "GET / HTTP/1.0\r\n\r\n", {bytes=26, proto=port.protocol}) if (not status) then return end if (result ~= "HTTP/1.0 404 Not Found\r\n\r\n") then return end -- So far so good, now see if we get random data for another request status, result = comm.exchange(host, port, "random data\r\n\r\n", {bytes=15, proto=port.protocol}) if (not status) then return end if string.match(result, "[^%s!-~].*[^%s!-~].*[^%s!-~]") then -- Detected port.version.name = "skype2" port.version.product = "Skype" nmap.set_port_version(host, port) return end return end