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55 lines
1.3 KiB
Lua
55 lines
1.3 KiB
Lua
local nmap = require "nmap"
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local shortport = require "shortport"
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local sip = require "sip"
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local stdnse = require "stdnse"
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local table = require "table"
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description = [[
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Enumerates a SIP Server's allowed methods.
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The script works by sending an OPTION request to the server and checking for
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the value of the Allow header in the response.
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]]
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---
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-- @usage
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-- nmap --script=sip-methods -sU -p 5060 <targets>
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--
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--@output
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-- 5060/udp open sip
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-- | sip-methods:
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-- |_ INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
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author = "Hani Benhabiles"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"default", "safe", "discovery"}
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portrule = shortport.port_or_service(5060, "sip", {"tcp", "udp"})
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action = function(host, port)
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local status, session, response
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session = sip.Session:new(host, port)
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status = session:connect()
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if not status then
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return "ERROR: Failed to connect to the SIP server."
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end
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status, response = session:options()
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if status then
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-- If port state not set to open, set it to open.
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if nmap.get_port_state(host, port) ~= "open" then
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nmap.set_port_state(host, port, "open")
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end
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-- Check if allow header exists in response
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local allow = response:getHeader("allow")
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if allow then
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return stdnse.format_output(true, allow)
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end
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end
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end
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