# 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())