mirror of
https://github.com/volatilityfoundation/volatility3.git
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117 lines
3.9 KiB
Python
117 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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"""In-memory artifacts from OSX systems."""
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from typing import Iterator, Tuple, Any, Generator, List
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from volatility3.framework import exceptions, renderers, interfaces
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from volatility3.framework.configuration import requirements
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from volatility3.framework.interfaces import plugins
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from volatility3.framework.objects import utility
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from volatility3.plugins.mac import pslist
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class Psaux(plugins.PluginInterface):
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"""Recovers program command line arguments."""
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_required_framework_version = (2, 0, 0)
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@classmethod
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def get_requirements(cls) -> List[interfaces.configuration.RequirementInterface]:
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return [
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requirements.ModuleRequirement(
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name="kernel",
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description="Kernel module for the OS",
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architectures=["Intel32", "Intel64"],
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),
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requirements.PluginRequirement(
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name="pslist", plugin=pslist.PsList, version=(3, 0, 0)
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),
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requirements.ListRequirement(
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name="pid",
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description="Filter on specific process IDs",
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element_type=int,
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optional=True,
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),
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]
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def _generator(
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self, tasks: Iterator[Any]
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) -> Generator[Tuple[int, Tuple[int, str, int, str]], None, None]:
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for task in tasks:
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proc_layer_name = task.add_process_layer()
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if proc_layer_name is None:
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continue
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proc_layer = self.context.layers[proc_layer_name]
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argsstart = task.user_stack - task.p_argslen
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if (
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not proc_layer.is_valid(argsstart)
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or task.p_argslen == 0
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or task.p_argc == 0
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):
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continue
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# Add one because the first two are usually duplicates
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argc = task.p_argc + 1
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# smear protection
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if argc > 1024:
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continue
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task_name = utility.array_to_string(task.p_comm)
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args: List[bytes] = []
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while argc > 0:
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try:
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arg = proc_layer.read(argsstart, 256)
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except exceptions.InvalidAddressException:
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break
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idx = arg.find(b"\x00")
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if idx != -1:
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arg = arg[:idx]
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argsstart += len(str(arg)) + 1
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# deal with the stupid alignment (leading nulls) and arg duplication
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if len(args) == 0:
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while argsstart < task.user_stack:
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try:
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check = proc_layer.read(argsstart, 1)
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except exceptions.InvalidAddressException:
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break
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if check != b"\x00":
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break
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argsstart = argsstart + 1
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args.append(arg)
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# also check for initial duplicates since OS X is painful
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elif arg != args[0]:
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args.append(arg)
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argc = argc - 1
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args_str = " ".join([s.decode("utf-8", errors="replace") for s in args])
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yield (0, (task.p_pid, task_name, task.p_argc, args_str))
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def run(self) -> renderers.TreeGrid:
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filter_func = pslist.PsList.create_pid_filter(self.config.get("pid", None))
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list_tasks = pslist.PsList.get_list_tasks(
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self.config.get("pslist_method", pslist.PsList.pslist_methods[0])
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)
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return renderers.TreeGrid(
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[("PID", int), ("Process", str), ("Argc", int), ("Arguments", str)],
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self._generator(
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list_tasks(self.context, self.config["kernel"], filter_func=filter_func)
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),
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)
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