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scripts/cccam-version.nse
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dmiller
Remove unused NSE library requires
13 фев 2014, 20:39
13 фев 2014, 20:39
ac5a89a
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local nmap = require "nmap" local shortport = require "shortport" local formulas = require "formulas" description = [[ Detects the CCcam service (software for sharing subscription TV among multiple receivers). The service normally runs on port 12000. It distinguishes itself by printing 16 random-looking bytes upon receiving a connection. Because the script attempts to detect "random-looking" bytes, it has a small chance of failing to detect the service when the data do not seem random enough.]] categories = {"version"} author = "David Fifield" local NUM_TRIALS = 2 local function trial(host, port) local status, data, s s = nmap.new_socket() status, data = s:connect(host, port) if not status then return end status, data = s:receive_bytes(0) if not status then s:close() return end s:close() return data end portrule = shortport.version_port_or_service({10000, 10001, 12000, 12001, 16000, 16001}, "cccam") function action(host, port) local seen = {} -- Try a couple of times to see that the response isn't constant. (But -- more trials also increase the chance that we will reject a legitimate -- cccam service.) for i = 1, NUM_TRIALS do local data data = trial(host, port) if not data or seen[data] or #data ~= 16 or not formulas.looksRandom(data) then return end seen[data] = true end port.version.name = "cccam" port.version.version = "CCcam DVR card sharing system" nmap.set_port_version(host, port) end