# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
#
from typing import Iterable
from volatility3.framework import renderers, interfaces, exceptions
from volatility3.framework.configuration import requirements
from volatility3.framework.renderers import format_hints
from volatility3.plugins.windows import poolscanner
[docs]class DriverScan(interfaces.plugins.PluginInterface):
"""Scans for drivers present in a particular windows memory image."""
_required_framework_version = (1, 0, 0)
_version = (1, 0, 0)
[docs] @classmethod
def get_requirements(cls):
return [
requirements.TranslationLayerRequirement(name = 'primary',
description = 'Memory layer for the kernel',
architectures = ["Intel32", "Intel64"]),
requirements.SymbolTableRequirement(name = "nt_symbols", description = "Windows kernel symbols"),
requirements.PluginRequirement(name = 'poolscanner', plugin = poolscanner.PoolScanner, version = (1, 0, 0)),
]
[docs] @classmethod
def scan_drivers(cls,
context: interfaces.context.ContextInterface,
layer_name: str,
symbol_table: str) -> \
Iterable[interfaces.objects.ObjectInterface]:
"""Scans for drivers using the poolscanner module and constraints.
Args:
context: The context to retrieve required elements (layers, symbol tables) from
layer_name: The name of the layer on which to operate
symbol_table: The name of the table containing the kernel symbols
Returns:
A list of Driver objects as found from the `layer_name` layer based on Driver pool signatures
"""
constraints = poolscanner.PoolScanner.builtin_constraints(symbol_table, [b'Dri\xf6', b'Driv'])
for result in poolscanner.PoolScanner.generate_pool_scan(context, layer_name, symbol_table, constraints):
_constraint, mem_object, _header = result
yield mem_object
def _generator(self):
for driver in self.scan_drivers(self.context, self.config['primary'], self.config['nt_symbols']):
try:
driver_name = driver.get_driver_name()
except (ValueError, exceptions.InvalidAddressException):
driver_name = renderers.NotApplicableValue()
try:
service_key = driver.DriverExtension.ServiceKeyName.String
except exceptions.InvalidAddressException:
service_key = renderers.NotApplicableValue()
try:
name = driver.DriverName.String
except exceptions.InvalidAddressException:
name = renderers.NotApplicableValue()
yield (0, (format_hints.Hex(driver.vol.offset), format_hints.Hex(driver.DriverStart),
format_hints.Hex(driver.DriverSize), service_key, driver_name, name))
[docs] def run(self):
return renderers.TreeGrid([("Offset", format_hints.Hex),
("Start", format_hints.Hex), ("Size", format_hints.Hex), ("Service Key", str),
("Driver Name", str), ("Name", str)], self._generator())