mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Andrew C
111 lines
4.1 KiB
Python
111 lines
4.1 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 Version 2 as
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# published by the Free Software Foundation. You may not use, modify or
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# distribute this program under any other version of the GNU General
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# Public License.
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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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import volatility.obj as obj
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import volatility.debug as debug
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import volatility.plugins.mac.common as mac_common
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import volatility.plugins.mac.pslist as mac_pslist
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class mac_bash_hash(mac_pslist.mac_pslist):
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"""Recover bash hash table from bash process memory"""
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def __init__(self, config, *args, **kwargs):
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mac_pslist.mac_pslist.__init__(self, config, *args, **kwargs)
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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_pslist.mac_pslist(self._config).calculate()
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nbuckets_offset = self.addr_space.profile.get_obj_offset("_bash_hash_table", "nbuckets")
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for task in tasks:
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proc_as = task.get_process_address_space()
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# In cases when mm is an invalid pointer
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if not proc_as:
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continue
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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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proc_as = task.get_process_address_space()
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for map in task.get_proc_maps():
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if map.get_path() != "":
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continue
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off = map.start
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while off < map.end:
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# test the number of buckets
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dr = proc_as.read(off + nbuckets_offset, 4)
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if dr == None:
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new_off = (off & ~0xfff) + 0xfff + 1
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off = new_off
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continue
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test = struct.unpack("<I", dr)[0]
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if test != 64:
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off = off + 1
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continue
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htable = obj.Object("_bash_hash_table", offset = off, vm = proc_as)
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if htable.is_valid():
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bucket_array = obj.Object(theType="Array", targetType="Pointer", offset = htable.bucket_array, vm = htable.nbuckets.obj_vm, count = 64)
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for bucket_ptr in bucket_array:
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bucket = bucket_ptr.dereference_as("bucket_contents")
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while bucket.times_found > 0 and bucket.data.is_valid() and bucket.key.is_valid():
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pdata = bucket.data
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if pdata.path.is_valid() and (0 <= pdata.flags <= 2):
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yield task, bucket
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bucket = bucket.next
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off = off + 1
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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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("Hits", "6"),
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("Command", "25"),
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("Full Path", "")])
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for task, bucket in data:
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self.table_row(outfd, task.p_pid, task.p_comm,
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bucket.times_found,
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str(bucket.key.dereference()),
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str(bucket.data.path.dereference()))
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