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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::TNS
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Oracle TNS Listener Command Issuer',
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      'Description'    => %q{
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        This module allows for the sending of arbitrary TNS commands in order
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        to gather information.
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        Inspired from tnscmd.pl from www.jammed.com/~jwa/hacks/security/tnscmd/tnscmd
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      },
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      'Author'         => ['MC'],
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      'License'        => MSF_LICENSE,
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      'DisclosureDate' => '2009-02-01'
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    ))
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    register_options(
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      [
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        Opt::RPORT(1521),
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        OptString.new('CMD', [ false, 'Something like ping, version, status, etc..', '(CONNECT_DATA=(COMMAND=VERSION))']),
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      ])
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  end
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  def run
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    begin
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      connect
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      command = datastore['CMD']
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      pkt = tns_packet(command)
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      print_status("Sending '#{command}' to #{rhost}:#{rport}")
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      sock.put(pkt)
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      print_status("writing #{pkt.length} bytes.")
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      select(nil,nil,nil,0.5)
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      print_status("reading")
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      res = sock.get_once(-1,5) || ''
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      res = res.tr("[\200-\377]","[\000-\177]")
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      res = res.tr("[\000-\027\]",".")
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      res = res.tr("\177",".")
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      print_status(res)
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      disconnect
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    end
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    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout => e
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      print_error e.message
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    rescue ::Timeout::Error, ::Errno::EPIPE,Errno::ECONNRESET => e
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      print_error e.message
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  end
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end
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