mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Andrew C
124 lines
5.2 KiB
Python
124 lines
5.2 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0
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@contact: atcuno@gmail.com
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@organization:
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"""
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import struct
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from operator import attrgetter
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import volatility.obj as obj
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import volatility.debug as debug
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import volatility.addrspace as addrspace
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import volatility.plugins.mac.common as mac_common
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import volatility.plugins.mac.pstasks as mac_tasks
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class mac_bash(mac_tasks.mac_tasks):
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"""Recover bash history from bash process memory"""
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def __init__(self, config, *args, **kwargs):
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mac_tasks.mac_tasks.__init__(self, config, *args, **kwargs)
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self._config.add_option('PRINTUNALLOC', short_option = 'P', default = None, help = 'print unallocated entries, please redirect to a file', action = 'store_true')
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self._config.add_option('HISTORY_LIST', short_option = 'H', default = None, help = 'address from history_list - see the Volatility wiki', action = 'store', type = 'long')
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self._config.add_option('SCAN_ALL', short_option = 'A', default = False, help = 'scan all processes, not just those named bash', action = 'store_true')
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def calculate(self):
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mac_common.set_plugin_members(self)
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tasks = mac_tasks.mac_tasks(self._config).calculate()
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for task in tasks:
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proc_as = task.get_process_address_space()
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if not self._config.HISTORY_LIST:
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# Do we scan everything or just /bin/bash instances?
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if not (self._config.SCAN_ALL or str(task.p_comm) == "bash"):
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continue
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# Keep a bucket of history objects so we can order them
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history_entries = []
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# Brute force the history list of an address isn't provided
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ts_offset = proc_as.profile.get_obj_offset("_hist_entry", "timestamp")
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# Are we dealing with 32 or 64-bit pointers
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if proc_as.profile.metadata.get('memory_model', '32bit') == '32bit':
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pack_format = "I"
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else:
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pack_format = "Q"
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# Look for strings that begin with pound/hash on the process heap
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for ptr_hash in task.search_process_memory_rw_nofile(["#"]):
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# Find pointers to this strings address, also on the heap
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addr = struct.pack(pack_format, ptr_hash)
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for ptr_string in task.search_process_memory_rw_nofile([addr]):
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# Check if we found a valid history entry object
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hist = obj.Object("_hist_entry",
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offset = ptr_string - ts_offset,
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vm = proc_as)
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if hist.is_valid():
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history_entries.append(hist)
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# We can terminate this inner loop now
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break
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# Report everything we found in order
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for hist in sorted(history_entries, key = attrgetter('time_as_integer')):
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yield task, hist
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else:
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the_history_addr = the_history_addr = self._config.HISTORY_LIST
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the_history = obj.Object("Pointer", vm = proc_as, offset = the_history_addr)
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max_ents = 2001
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the_history = obj.Object(theType = 'Array', offset = the_history,
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vm = proc_as, targetType = 'Pointer',
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count = max_ents)
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for ptr in the_history:
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if not ptr:
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if self._config.PRINTUNALLOC:
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continue
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else:
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break
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hist = ptr.dereference_as("_hist_entry")
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if hist.is_valid():
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yield task, hist
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def render_text(self, outfd, data):
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self.table_header(outfd, [("Pid", "8"),
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("Name", "20"),
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("Command Time", "30"),
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("Command", ""),])
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for task, hist_entry in data:
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self.table_row(outfd, task.p_pid, task.p_comm,
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hist_entry.time_object(),
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hist_entry.line.dereference())
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