mirror of
https://github.com/volatilityfoundation/volatility3.git
synced 2026-08-20 13:42:23 +02:00
Mike Auty
9824538bd9
This includes: * Better ways of checking empty lists * Not shadowing builtin functions like filter * Preventing invalid slash warnings by marking strings as regexps * Removing unnecessary brackets * Lowercase variable names * Adding/updating parameters in docstrings * Removing unused code (lines not chunks) * Change in not a member tests * Changing some methods to static * Shorting range membership checks * Missing parameters * Make some exception handlers more specific * Don't define a lambda to a variable * A few more instance checks to help type checkers
108 lines
4.5 KiB
Python
108 lines
4.5 KiB
Python
"""A module containing a collection of plugins that produce data
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typically found in Linux's /proc file system.
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"""
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import datetime
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import struct
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from typing import List
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from volatility.framework import constants, renderers, symbols, interfaces
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from volatility.framework.configuration import requirements
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from volatility.framework.interfaces import plugins
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from volatility.framework.layers import scanners
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from volatility.framework.objects import utility
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from volatility.framework.symbols.linux.bash import BashIntermedSymbols
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from volatility.plugins import timeliner
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from volatility.plugins.linux import pslist
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class Bash(plugins.PluginInterface, timeliner.TimeLinerInterface):
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"""Recovers bash command history from memory"""
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@classmethod
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def get_requirements(cls) -> List[interfaces.configuration.RequirementInterface]:
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return [requirements.TranslationLayerRequirement(name = 'primary',
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description = 'Kernel Address Space',
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architectures = ["Intel32", "Intel64"]),
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requirements.SymbolRequirement(name = "vmlinux",
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description = "Linux Kernel")]
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def _generator(self, tasks):
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is_32bit = not symbols.symbol_table_is_64bit(self.context, self.config["vmlinux"])
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if is_32bit:
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pack_format = "I"
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bash_json_file = "bash32"
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else:
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pack_format = "Q"
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bash_json_file = "bash64"
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bash_table_name = BashIntermedSymbols.create(self.context,
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self.config_path,
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"linux",
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bash_json_file)
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ts_offset = self.context.symbol_space.get_type(
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bash_table_name + constants.BANG + "hist_entry").relative_child_offset("timestamp")
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for task in tasks:
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task_name = utility.array_to_string(task.comm)
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if task_name not in ["bash", "sh", "dash"]:
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continue
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proc_layer_name = task.add_process_layer()
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if not proc_layer_name:
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continue
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proc_layer = self.context.memory[proc_layer_name]
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bang_addrs = []
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# find '#' values on the heap
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for address in proc_layer.scan(self.context,
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scanners.BytesScanner(b"#"),
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sections = task.get_process_memory_sections(heap_only = True)):
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bang_addrs.append(struct.pack(pack_format, address))
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history_entries = []
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for address, _ in proc_layer.scan(self.context,
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scanners.MultiStringScanner(bang_addrs),
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sections = task.get_process_memory_sections(heap_only = True)):
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hist = self.context.object(bash_table_name + constants.BANG + "hist_entry",
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offset = address - ts_offset,
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layer_name = proc_layer_name)
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if hist.is_valid():
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history_entries.append(hist)
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for hist in sorted(history_entries, key = lambda x: x.get_time_as_integer()):
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yield (0, (task.pid, task_name, hist.get_time_object(), hist.get_command()))
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def run(self):
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filt = pslist.PsList.create_filter([self.config.get('pid', None)])
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plugin = pslist.PsList.list_tasks
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return renderers.TreeGrid(
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[("PID", int),
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("Process", str),
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("CommandTime", datetime.datetime),
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("Command", str)],
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self._generator(plugin(self.context,
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self.config['primary'],
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self.config['vmlinux'],
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filter = filt)))
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def generate_timeline(self):
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filt = pslist.PsList.create_filter([self.config.get('pid', None)])
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plugin = pslist.PsList.list_tasks
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for row in self._generator(plugin(self.context,
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self.config['primary'],
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self.config['vmlinux'],
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filter = filt)):
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_depth, row_data = row
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description = "{} ({}): \"{}\"".format(row_data[0], row_data[1], row_data[3])
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yield (description, timeliner.TimeLinerType.CREATED, row_data[2])
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