mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
mike.auty@gmail.com
99 lines
3.4 KiB
Python
99 lines
3.4 KiB
Python
# Volatility
|
|
#
|
|
# Authors:
|
|
# Michael Cohen <scudette@users.sourceforge.net>
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or (at
|
|
# your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
#
|
|
|
|
""" This plugin contains CORE classes used by lots of other plugins """
|
|
import volatility.scan as scan
|
|
import volatility.obj as obj
|
|
import volatility.debug as debug #pylint: disable-msg=W0611
|
|
|
|
#pylint: disable-msg=C0111
|
|
|
|
## The following are checks for pool scanners.
|
|
|
|
class PoolTagCheck(scan.ScannerCheck):
|
|
""" This scanner checks for the occurance of a pool tag """
|
|
def __init__(self, address_space, tag = None, **kwargs):
|
|
scan.ScannerCheck.__init__(self, address_space, **kwargs)
|
|
self.tag = tag
|
|
|
|
def skip(self, data, offset):
|
|
try:
|
|
nextval = data.index(self.tag, offset + 1)
|
|
return nextval - offset
|
|
except ValueError:
|
|
## Substring is not found - skip to the end of this data buffer
|
|
return len(data) - offset
|
|
|
|
def check(self, offset):
|
|
data = self.address_space.read(offset, len(self.tag))
|
|
return data == self.tag
|
|
|
|
class CheckPoolSize(scan.ScannerCheck):
|
|
""" Check pool block size """
|
|
def __init__(self, address_space, condition = (lambda x: x == 8), **kwargs):
|
|
scan.ScannerCheck.__init__(self, address_space, **kwargs)
|
|
self.condition = condition
|
|
|
|
def check(self, offset):
|
|
pool_hdr = obj.Object('_POOL_HEADER', vm = self.address_space,
|
|
offset = offset - 4)
|
|
|
|
block_size = pool_hdr.BlockSize.v()
|
|
|
|
pool_align = obj.VolMagic(self.address_space).PoolAlignment.v()
|
|
|
|
return self.condition(block_size * pool_align)
|
|
|
|
class CheckPoolType(scan.ScannerCheck):
|
|
""" Check the pool type """
|
|
def __init__(self, address_space, paged = False,
|
|
non_paged = False, free = False, **kwargs):
|
|
scan.ScannerCheck.__init__(self, address_space, **kwargs)
|
|
self.non_paged = non_paged
|
|
self.paged = paged
|
|
self.free = free
|
|
|
|
def check(self, offset):
|
|
pool_hdr = obj.Object('_POOL_HEADER', vm = self.address_space,
|
|
offset = offset - 4)
|
|
|
|
ptype = pool_hdr.PoolType.v()
|
|
|
|
if self.non_paged and (ptype % 2) == 1:
|
|
return True
|
|
|
|
if self.free and ptype == 0:
|
|
return True
|
|
|
|
if self.paged and (ptype % 2) == 0 and ptype > 0:
|
|
return True
|
|
|
|
class CheckPoolIndex(scan.ScannerCheck):
|
|
""" Checks the pool index """
|
|
def __init__(self, address_space, value = 0, **kwargs):
|
|
scan.ScannerCheck.__init__(self, address_space, **kwargs)
|
|
self.value = value
|
|
|
|
def check(self, offset):
|
|
pool_hdr = obj.Object('_POOL_HEADER', vm = self.address_space,
|
|
offset = offset - 4)
|
|
|
|
return pool_hdr.PoolIndex == self.value
|