# This file is opyright 2020 Volatility Foundation and licensed under the Volatility Software License 1.0
# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
#
import logging
from typing import Iterable, Callable
from volatility3.framework import renderers, interfaces
from volatility3.framework.configuration import requirements
from volatility3.framework.objects import utility
from volatility3.framework.renderers import format_hints
from volatility3.framework.symbols import mac
from volatility3.plugins.mac import lsmod
vollog = logging.getLogger(__name__)
[docs]class Kauth_scopes(interfaces.plugins.PluginInterface):
""" Lists kauth scopes and their status """
_version = (2, 0, 0)
_required_framework_version = (2, 0, 0)
[docs] @classmethod
def get_requirements(cls):
return [
requirements.ModuleRequirement(name = 'kernel', description = 'Kernel module for the OS',
architectures = ["Intel32", "Intel64"]),
requirements.VersionRequirement(name = 'macutils', component = mac.MacUtilities, version = (1, 1, 0)),
requirements.PluginRequirement(name = 'lsmod', plugin = lsmod.Lsmod, version = (2, 0, 0))
]
[docs] @classmethod
def list_kauth_scopes(cls,
context: interfaces.context.ContextInterface,
kernel_module_name: str,
filter_func: Callable[[int], bool] = lambda _: False) -> \
Iterable[interfaces.objects.ObjectInterface]:
"""
Enumerates the registered kauth scopes and yields each object
Uses smear-safe enumeration API
"""
kernel = context.modules[kernel_module_name]
scopes = kernel.object_from_symbol("kauth_scopes")
for scope in mac.MacUtilities.walk_tailq(scopes, "ks_link"):
if not filter_func(scope):
yield scope
def _generator(self):
kernel = self.context.modules[self.config['kernel']]
mods = lsmod.Lsmod.list_modules(self.context, self.config['kernel'])
handlers = mac.MacUtilities.generate_kernel_handler_info(self.context, kernel.layer_name, kernel, mods)
for scope in self.list_kauth_scopes(self.context, self.config['kernel']):
callback = scope.ks_callback
if callback == 0:
continue
module_name, symbol_name = mac.MacUtilities.lookup_module_address(self.context, handlers, callback,
self.config['kernel'])
identifier = utility.pointer_to_string(scope.ks_identifier, 128)
yield (0, (identifier, format_hints.Hex(scope.ks_idata), len([l for l in scope.get_listeners()]),
format_hints.Hex(callback), module_name, symbol_name))
[docs] def run(self):
return renderers.TreeGrid([("Name", str), ("IData", format_hints.Hex), ("Listeners", int),
("Callback Address", format_hints.Hex), ("Module", str), ("Symbol", str)],
self._generator())