# 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 FileScan(interfaces.plugins.PluginInterface):
"""Scans for file objects present in a particular windows memory image."""
_required_framework_version = (2, 0, 0)
[docs] @classmethod
def get_requirements(cls):
return [
requirements.ModuleRequirement(
name="kernel",
description="Windows kernel",
architectures=["Intel32", "Intel64"],
),
requirements.PluginRequirement(
name="poolscanner", plugin=poolscanner.PoolScanner, version=(1, 0, 0)
),
]
[docs] @classmethod
def scan_files(
cls,
context: interfaces.context.ContextInterface,
layer_name: str,
symbol_table: str,
) -> Iterable[interfaces.objects.ObjectInterface]:
"""Scans for file objects 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 File objects as found from the `layer_name` layer based on File pool signatures
"""
constraints = poolscanner.PoolScanner.builtin_constraints(
symbol_table, [b"Fil\xe5", b"File"]
)
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):
kernel = self.context.modules[self.config["kernel"]]
for fileobj in self.scan_files(
self.context, kernel.layer_name, kernel.symbol_table_name
):
try:
file_name = fileobj.FileName.String
except exceptions.InvalidAddressException:
continue
yield (0, (format_hints.Hex(fileobj.vol.offset), file_name, fileobj.Size))
[docs] def run(self):
return renderers.TreeGrid(
[("Offset", format_hints.Hex), ("Name", str), ("Size", int)],
self._generator(),
)