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ac5a89a8e1
for lib in nselib/*.lua*; do l=${lib#*/}; l=${l%.lua*}; find . -name \
\*.lua -o -name \*.nse | xargs grep -l "require .$l\>" | xargs grep \
-c "\<$l\." | grep ':0$' | awk -F: '{print "'$l'", $1}'; done
Did not remove calls to stdnse.silent_require since these can be used to
abort script execution if OpenSSL is not included, even if the script
does not directly call openssl.* (perhaps it uses comm.tryssl instead,
for instance).
Also did not remove require "strict", since that library is special and
modifies the environment.
64 lines
1.5 KiB
Lua
64 lines
1.5 KiB
Lua
local nmap = require "nmap"
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local shortport = require "shortport"
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local formulas = require "formulas"
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description = [[
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Detects the CCcam service (software for sharing subscription TV among
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multiple receivers).
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The service normally runs on port 12000. It distinguishes
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itself by printing 16 random-looking bytes upon receiving a
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connection.
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Because the script attempts to detect "random-looking" bytes, it has a small
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chance of failing to detect the service when the data do not seem random
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enough.]]
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categories = {"version"}
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author = "David Fifield"
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local NUM_TRIALS = 2
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local function trial(host, port)
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local status, data, s
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s = nmap.new_socket()
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status, data = s:connect(host, port)
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if not status then
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return
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end
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status, data = s:receive_bytes(0)
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if not status then
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s:close()
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return
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end
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s:close()
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return data
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end
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portrule = shortport.version_port_or_service({10000, 10001, 12000, 12001, 16000, 16001}, "cccam")
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function action(host, port)
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local seen = {}
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-- Try a couple of times to see that the response isn't constant. (But
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-- more trials also increase the chance that we will reject a legitimate
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-- cccam service.)
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for i = 1, NUM_TRIALS do
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local data
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data = trial(host, port)
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if not data or seen[data] or #data ~= 16 or not formulas.looksRandom(data) then
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return
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end
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seen[data] = true
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end
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port.version.name = "cccam"
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port.version.version = "CCcam DVR card sharing system"
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nmap.set_port_version(host, port)
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end
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