##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Auxiliary::Report
  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::Scanner

  def initialize
    super(
      'Name'        => 'Oracle XML DB SID Discovery',
      'Description' => %q{
          This module simply makes an authenticated request to retrieve
          the sid from the Oracle XML DB httpd server.
      },
      'References'  =>
        [
          [ 'URL', 'http://dsecrg.com/files/pub/pdf/Different_ways_to_guess_Oracle_database_SID_(eng).pdf' ],
        ],
      'Author'      => [ 'MC' ],
      'License'     => MSF_LICENSE
    )

    register_options(
        [
          Opt::RPORT(8080),
          OptString.new('DBUSER', [ false, 'The db user to authenticate with.',  'scott']),
          OptString.new('DBPASS', [ false, 'The db pass to authenticate with.',  'tiger']),
        ])
  end

  def run_host(ip)
    begin

      user_pass = "#{datastore['DBUSER']}:#{datastore['DBPASS']}"

      res = send_request_raw({
        'uri'     => '/oradb/PUBLIC/GLOBAL_NAME',
        'version' => '1.0',
        'method'  => 'GET',
        'headers' =>
        {
          'Authorization' => "Basic #{Rex::Text.encode_base64(user_pass)}"
        }
      }, 5)

        if( not res )
          vprint_error("Unable to retrieve SID for #{ip}:#{datastore['RPORT']} with #{datastore['DBUSER']} / #{datastore['DBPASS']}...")
          return
        end

        if (res.code == 200)
          if (not res.body.length > 0)
          # sometimes weird bug where body doesn't have value yet
            res.body = res.bufq
          end
          sid = res.body.scan(/<GLOBAL_NAME>(\S+)<\/GLOBAL_NAME>/)
            report_note(
              :host	=> ip,
              :port => datastore['RPORT'],
              :proto	=> 'tcp',
              :type	=> 'oracle_sid',
              :data	=> sid,
              :update => :unique_data
            )
          print_status("Discovered SID: '#{sid}' for host #{ip}:#{datastore['RPORT']} with #{datastore['DBUSER']} / #{datastore['DBPASS']}")
        else
          print_error("Unable to retrieve SID for #{ip}:#{datastore['RPORT']} with #{datastore['DBUSER']} / #{datastore['DBPASS']}...")
        end
    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
    rescue ::Timeout::Error, ::Errno::EPIPE
    end
  end
end