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"}
require "comm"
require "shortport"
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, "hardmatched")
return
end
return
end
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