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58 lines
1.5 KiB
Lua
58 lines
1.5 KiB
Lua
description = [[
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Queries a VNC server for its protocol version and supported security types.
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]]
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author = "Patrik Karlsson"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"default", "discovery", "safe"}
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---
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-- @output
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-- PORT STATE SERVICE
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-- 5900/tcp open vnc
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-- | vnc-info:
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-- | Protocol version: 3.889
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-- | Security types:
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-- | Mac OS X security type (30)
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-- |_ Mac OS X security type (35)
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--
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-- Version 0.2
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-- Created 07/07/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
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-- Revised 08/14/2010 - v0.2 - changed so that errors are reported even without debugging
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require 'shortport'
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require 'vnc'
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portrule = shortport.port_or_service( {5900, 5901, 5902} , "vnc", "tcp", "open")
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action = function(host, port)
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local vnc = vnc.VNC:new( host.ip, port.number )
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local status, data
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local result = {}
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status, data = vnc:connect()
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if ( not(status) ) then return " \n ERROR: " .. data end
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status, data = vnc:handshake()
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if ( not(status) ) then return " \n ERROR: " .. data end
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status, data = vnc:getSecTypesAsStringTable()
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if ( not(status) ) then return " \n ERROR: " .. data end
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table.insert(result, ("Protocol version: %s"):format(vnc:getProtocolVersion()) )
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if ( data and #data ~= 0 ) then
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data.name = "Security types:"
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table.insert( result, data )
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end
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if ( vnc:supportsSecType(vnc.sectypes.NONE) ) then
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table.insert(result, "WARNING: Server does not require authentication")
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end
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return stdnse.format_output(status, result)
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end
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