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https://github.com/volatilityfoundation/volatility3.git
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100 lines
3.8 KiB
Python
100 lines
3.8 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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import logging
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from typing import Callable, Iterable, List, Dict
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from volatility.framework import renderers, interfaces, contexts, exceptions
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from volatility.framework.automagic import mac
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from volatility.framework.configuration import requirements
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from volatility.framework.objects import utility
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vollog = logging.getLogger(__name__)
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class PsList(interfaces.plugins.PluginInterface):
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"""Lists the processes present in a particular mac memory image."""
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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.TranslationLayerRequirement(name = 'primary',
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description = 'Memory layer for the kernel',
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architectures = ["Intel32", "Intel64"]),
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requirements.SymbolTableRequirement(name = "darwin", description = "Mac kernel symbols")
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]
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@classmethod
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def create_pid_filter(cls, pid_list: List[int] = None) -> Callable[[int], bool]:
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filter_func = lambda _: False
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# FIXME: mypy #4973 or #2608
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pid_list = pid_list or []
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filter_list = [x for x in pid_list if x is not None]
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if filter_list:
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def list_filter(x):
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return x.pid not in filter_list
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filter_func = list_filter
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return filter_func
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def _generator(self):
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for task in self.list_tasks(self.context,
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self.config['primary'],
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self.config['darwin'],
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filter_func = self.create_pid_filter([self.config.get('pid', None)])):
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pid = task.p_pid
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ppid = task.p_ppid
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name = utility.array_to_string(task.p_comm)
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yield (0, (pid, ppid, name))
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@classmethod
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def list_tasks(cls,
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context: interfaces.context.ContextInterface,
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layer_name: str,
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darwin_symbols: str,
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filter_func: Callable[[int], bool] = lambda _: False) -> \
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Iterable[interfaces.objects.ObjectInterface]:
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"""Lists all the processes in the primary layer.
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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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darwin_symbols: The name of the table containing the kernel symbols
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filter_func: A function which takes a process object and returns True if the process should be ignored/filtered
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Returns:
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The list of process objects from the processes linked list after filtering
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"""
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mac.MacUtilities.aslr_mask_symbol_table(context, darwin_symbols, layer_name)
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kernel = contexts.Module(context, darwin_symbols, layer_name, 0)
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kernel_as = context.layers[layer_name]
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proc = kernel.object_from_symbol(symbol_name = "allproc").lh_first
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seen = {} # type: Dict[int, int]
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while proc is not None and proc.vol.offset != 0:
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if proc.vol.offset in seen:
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vollog.log(logging.INFO, "Recursive process list detected (a result of non-atomic acquisition).")
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break
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else:
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seen[proc.vol.offset] = 1
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if not filter_func(proc) and kernel_as.is_valid(proc.vol.offset, proc.vol.size):
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yield proc
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try:
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proc = proc.p_list.le_next.dereference()
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except exceptions.InvalidAddressException:
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break
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def run(self):
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return renderers.TreeGrid([("PID", int), ("PPID", int), ("COMM", str)], self._generator())
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