/usr/lib/python2.7/dist-packages/rekall/plugins/overlays/windows/win8.py is in python-rekall-core 1.6.0+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 | # Rekall Memory Forensics
# Copyright (c) 2008-2011 Volatile Systems
# Copyright 2013 Google Inc. All Rights Reserved.
# Author: Michael Cohen <scudette@gmail.com>
#
# 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
#
# pylint: disable=protected-access
from rekall import addrspace
from rekall import kb
from rekall import obj
from rekall import utils
from rekall.plugins.overlays.windows import common
from rekall.plugins.overlays.windows import win7
def TagOffset(x):
if x.obj_profile.metadata("arch") == "AMD64":
return x.obj_offset - 12
return x.obj_offset - 4
# In windows 8 the VadRoot is actually composed from _MM_AVL_NODE instead of
# _MMVAD structs or _MMADDRESS_NODE. The structs appear to be organised by
# functional order - the _MM_AVL_NODE is always the first member of the struct,
# then the _MMVAD_SHORT, then the _MMVAD. For example, the tree traversal code,
# simply casts all objects to an _MM_AVL_NODE without caring what they actually
# are, then depending on the vad tag, they get casted to different structs.
# Additionally in windows 8.1 there are new fields StartingVpnHigh and
# EndingVpnHigh which are chars representing the high part of the PFN. Therefore
# the real PFN is (StartingVpnHigh << 32) | StartingVpn. The below overlay
# gracefully falls back to the old profiles (where StartingVpnHigh does not
# exist).
win8_overlays = {
'_EPROCESS': [None, {
# A symbolic link to the real vad root.
'RealVadRoot': lambda x: x.VadRoot.BalancedRoot
}],
'_MM_AVL_NODE': [None, {
'Tag': [TagOffset, ['String', dict(length=4)]],
}],
'_RTL_BALANCED_NODE': [None, {
'Tag': [TagOffset, ['String', dict(length=4)]],
}],
'_MMVAD_SHORT': [None, {
'Tag': [TagOffset, ['String', dict(length=4)]],
'Start': lambda x: (
x.StartingVpn + ((x.m("StartingVpnHigh") or 0) << 32)) << 12,
'End': lambda x: (
(x.EndingVpn + ((x.m("EndingVpnHigh") or 0) << 32))<<12)+0xFFF,
'Length': lambda x: x.End - x.Start + 1,
'CommitCharge': lambda x: x.u1.VadFlags1.CommitCharge,
'LeftChild': lambda x: x.VadNode.Left,
'RightChild': lambda x: x.VadNode.Right,
}],
'_MMVAD': [None, {
'Tag': [TagOffset, ['String', dict(length=4)]],
'ControlArea': lambda x: x.Subsection.ControlArea,
# The following members proxy the embedded _MMVAD_SHORT in .Core.
'Start': lambda x: x.Core.Start,
'End': lambda x: x.Core.End,
'Length': lambda x: x.Core.Length,
'CommitCharge': lambda x: x.Core.CommitCharge,
'u': lambda x: x.Core.u,
'LeftChild': lambda x: x.Core.LeftChild,
'RightChild': lambda x: x.Core.RightChild,
}],
'_MMVAD_LONG': [None, {
'Tag': [TagOffset, ['String', dict(length=4)]],
'ControlArea': lambda x: x.Subsection.ControlArea,
# The following members proxy the embedded _MMVAD_SHORT in .Core.
'Start': lambda x: x.Core.Start,
'End': lambda x: x.Core.End,
'Length': lambda x: x.Core.Length,
'CommitCharge': lambda x: x.Core.CommitCharge,
'u': lambda x: x.Core.u,
'LeftChild': lambda x: x.Core.LeftChild,
'RightChild': lambda x: x.Core.RightChild,
}],
"_CONTROL_AREA": [None, {
'FilePointer': [None, ['_EX_FAST_REF', dict(
target="_FILE_OBJECT"
)]],
}],
'_HANDLE_TABLE_ENTRY' : [None, {
# In Windows 8 the Object pointer is replaced with a bitfield.
'Object': lambda x: x.obj_profile.Pointer(
target="_OBJECT_HEADER",
value=(x.ObjectPointerBits << 4 | 0xFFFFE00000000000),
vm=x.obj_vm, parent=x)
}],
'_OBJECT_HEADER': [None, {
"InfoMask": [None, ["Flags", dict(
maskmap=utils.Invert({
0x1: "CreatorInfo",
0x2: "NameInfo",
0x4: "HandleInfo",
0x8: "QuotaInfo",
0x10: "ProcessInfo",
0x20: "AuditInfo",
0x40: "PaddingInfo",
}),
target="unsigned char",
)]],
'GrantedAccess': lambda x: x.obj_parent.GrantedAccessBits
}],
'_MM_SESSION_SPACE': [None, {
# Specialized iterator to produce all the _IMAGE_ENTRY_IN_SESSION
# records.
'ImageIterator': lambda x: x.ImageList.list_of_type(
"_IMAGE_ENTRY_IN_SESSION", "Link")
}],
'_IMAGE_ENTRY_IN_SESSION': [None, {
'ImageBase': lambda x: x.Address.v() & ~7
}],
}
win8_1_overlays = {
'_EPROCESS': [None, {
# A symbolic link to the real vad root.
'RealVadRoot': lambda x: x.VadRoot.Root
}],
'_HANDLE_TABLE': [None, {
'HandleCount': lambda x: obj.NoneObject("Unknown")
}],
}
win8_undocumented_amd64 = {
# win8.1.raw 18:05:45> dis "nt!MiSessionInsertImage"
# 0xf802d314344a 4E e871030300 CALL 0xf802d31737c0 nt!memset
# ...
# 0xf802d314345a 5E 48897b20 MOV [RBX+0x20], RDI
'_IMAGE_ENTRY_IN_SESSION': [None, {
'Link': [0, ['_LIST_ENTRY']],
'Address': [0x20, ["Pointer"]],
}],
}
win8_undocumented_i386 = {
'_IMAGE_ENTRY_IN_SESSION': [None, {
'Link': [0, ['_LIST_ENTRY']],
'Address': [0x10, ["Pointer"]],
}],
}
class ObpInfoMaskToOffsetHook(kb.ParameterHook):
"""By caching this map we can speed up lookups significantly."""
name = "ObpInfoMaskToOffset"
def calculate(self):
table_offset = self.session.profile.get_constant(
"ObpInfoMaskToOffset", True)
# We use a temporary buffer for the object to save reads of the image.
cached_vm = addrspace.BufferAddressSpace(
data=self.session.kernel_address_space.read(table_offset, 0x100),
session=self.session)
return [int(x) for x in self.session.profile.Array(
target="byte", vm=cached_vm, count=0x100)]
class _PSP_CID_TABLE(common._HANDLE_TABLE):
"""Subclass the Windows handle table object for parsing PspCidTable"""
def get_item(self, entry):
p = entry.Object.v()
handle = self.obj_profile.Object(
"_OBJECT_HEADER",
offset=(p & ~7) - self.obj_profile.get_obj_offset(
'_OBJECT_HEADER', 'Body'),
vm=self.obj_vm)
return handle
class _MM_AVL_NODE(common.VadTraverser):
"""All nodes in the Vad tree are treated as _MM_AVL_NODE.
The Vad structures can be either _MMVAD_SHORT or _MMVAD. At the
base of each struct there is an _MM_AVL_NODE which contains the LeftChild
and RightChild members. In order to traverse the tree, we follow the
_MM_AVL_NODE and create the required _MMVAD type at each point.
In Windows 8 these behave the same as windows 7's _MMADDRESS_NODE.
"""
## The actual type depends on this tag value. Windows 8 does not have an
## _MMVAD_LONG.
tag_map = {'Vadl': '_MMVAD',
'VadS': '_MMVAD_SHORT',
'Vad ': '_MMVAD',
'VadF': '_MMVAD_SHORT',
'Vadm': '_MMVAD',
}
class _RTL_BALANCED_NODE(_MM_AVL_NODE):
"""Win8.1 renames this type."""
left = "Left"
right = "Right"
def InitializeWindows8Profile(profile):
"""Initialize windows 8 and 8.1 profiles."""
profile.add_overlay(win8_overlays)
if profile.metadata("arch") == "AMD64":
profile.add_overlay(win8_undocumented_amd64)
else:
profile.add_overlay(win8_undocumented_i386)
# Win8.1 changed the vad data structures.
if profile.metadata("version") >= 6.3:
profile.add_overlay(win8_1_overlays)
profile.add_classes(dict(
_OBJECT_HEADER=win7._OBJECT_HEADER,
_PSP_CID_TABLE=_PSP_CID_TABLE,
_MM_AVL_NODE=_MM_AVL_NODE,
_RTL_BALANCED_NODE=_RTL_BALANCED_NODE,
_POOL_HEADER=win7._POOL_HEADER,
))
# Windows 8 changes many of the pool tags. These come from windbg's
# pooltag.txt.
profile.add_constants(dict(
DRIVER_POOLTAG="Driv",
EPROCESS_POOLTAG="Proc",
FILE_POOLTAG="File",
SYMLINK_POOLTAG="Symb",
MODULE_POOLTAG="MmLd",
MUTANT_POOLTAG="Muta",
THREAD_POOLTAG='Thre',
))
|