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121 lines
3.9 KiB
Python
121 lines
3.9 KiB
Python
# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
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# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
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#
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from typing import Iterable
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from volatility3.framework import renderers, interfaces, exceptions
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from volatility3.framework.configuration import requirements
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from volatility3.framework.renderers import format_hints
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from volatility3.plugins.windows import poolscanner
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class DriverScan(interfaces.plugins.PluginInterface):
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"""Scans for drivers present in a particular windows memory image."""
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_required_framework_version = (2, 0, 0)
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_version = (1, 0, 0)
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@classmethod
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def get_requirements(cls):
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return [
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requirements.ModuleRequirement(
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name="kernel",
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description="Windows kernel",
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architectures=["Intel32", "Intel64"],
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),
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requirements.PluginRequirement(
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name="poolscanner", plugin=poolscanner.PoolScanner, version=(1, 0, 0)
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),
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]
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@classmethod
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def scan_drivers(
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cls,
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context: interfaces.context.ContextInterface,
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layer_name: str,
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symbol_table: str,
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) -> Iterable[interfaces.objects.ObjectInterface]:
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"""Scans for drivers using the poolscanner module and constraints.
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Args:
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context: The context to retrieve required elements (layers, symbol tables) from
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layer_name: The name of the layer on which to operate
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symbol_table: The name of the table containing the kernel symbols
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Returns:
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A list of Driver objects as found from the `layer_name` layer based on Driver pool signatures
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"""
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constraints = poolscanner.PoolScanner.builtin_constraints(
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symbol_table, [b"Dri\xf6", b"Driv"]
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)
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for result in poolscanner.PoolScanner.generate_pool_scan(
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context, layer_name, symbol_table, constraints
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):
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_constraint, mem_object, _header = result
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yield mem_object
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@classmethod
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def get_names_for_driver(cls, driver):
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"""
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Convenience method for getting the commonly used
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names associated with a driver
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Args:
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driver: A Driver object
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Returns:
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A tuple of strings of (driver name, service key, driver alt. name)
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"""
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try:
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driver_name = driver.get_driver_name()
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except (ValueError, exceptions.InvalidAddressException):
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driver_name = renderers.NotApplicableValue()
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try:
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service_key = driver.DriverExtension.ServiceKeyName.String
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except exceptions.InvalidAddressException:
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service_key = renderers.NotApplicableValue()
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try:
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name = driver.DriverName.String
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except exceptions.InvalidAddressException:
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name = renderers.NotApplicableValue()
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return driver_name, service_key, name
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def _generator(self):
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kernel = self.context.modules[self.config["kernel"]]
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for driver in self.scan_drivers(
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self.context, kernel.layer_name, kernel.symbol_table_name
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):
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driver_name, service_key, name = self.get_names_for_driver(driver)
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yield (
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0,
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(
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format_hints.Hex(driver.vol.offset),
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format_hints.Hex(driver.DriverStart),
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format_hints.Hex(driver.DriverSize),
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service_key,
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driver_name,
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name,
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),
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)
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def run(self):
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return renderers.TreeGrid(
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[
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("Offset", format_hints.Hex),
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("Start", format_hints.Hex),
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("Size", format_hints.Hex),
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("Service Key", str),
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("Driver Name", str),
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("Name", str),
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],
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self._generator(),
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)
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