/usr/lib/python2.7/dist-packages/rekall/plugins/windows/gui/win32k_core.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.
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# Copyright (C) 2007,2008 Volatile Systems
# Copyright (C) 2010,2011,2012 Michael Hale Ligh <michael.ligh@mnin.org>
# Copyright 2013 Google Inc. All Rights Reserved.
#
# 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 kb
from rekall import utils
from rekall import obj
from rekall.plugins.overlays.windows import pe_vtypes
from rekall.plugins.windows.gui import constants
from rekall.plugins.windows.gui.vtypes import xp
win32k_overlay = {
'_RTL_ATOM_TABLE_ENTRY': [None, {
'Name': [None, ['UnicodeString', dict(
encoding='utf16',
length=lambda x: x.NameLength * 2)]],
'ReferenceCount': lambda x: (x.m("ReferenceCount") or
x.m("Reference.ReferenceCount")),
'Pinned': lambda x: x.m("Flags") == 1 or x.m("Reference.Flags") == 1,
}],
'tagWINDOWSTATION': [None, {
'pGlobalAtomTable': [None, ['Pointer', dict(
target="_RTL_ATOM_TABLE"
)]],
'pClipBase': [None, ["Pointer", dict(
target="Array",
target_args=dict(
target='tagCLIP',
count=lambda x: x.cNumClipFormats
)
)]],
}],
'tagDESKTOP': [None, {
'pheapDesktop': [None, ['Pointer', dict(
target="_HEAP"
)]],
}],
'tagSHAREDINFO': [None, {
'aheList': [None, ['Pointer', dict(
target='Array',
target_args=dict(
target="_HANDLEENTRY",
count=lambda x: x.psi.cHandleEntries,
)
)]],
}],
'_HEAD': [None, {
'h': [None, ['unsigned int']],
}],
"tagTHREADINFO": [None, {
"pEThread": [None, ["Pointer", dict(
target="_ETHREAD")]],
}],
"tagHOOK": [None, {
"flags": [None, ["Flags", dict(
bitmap=utils.MaskMapFromDefines(
"""
// 9/18/2011
// http://forum.sysinternals.com/enumerate-windows-hooks_topic23877.html#122641
#define HF_GLOBAL 0x0001
#define HF_ANSI 0x0002
#define HF_NEEDHC_SKIP 0x0004
#define HF_HUNG 0x0008
#define HF_HOOKFAULTED 0x0010
#define HF_NOPLAYBACKDELAY 0x0020
#define HF_WX86KNOWINDOWLL 0x0040
#define HF_DESTROYED 0x0080
// mask for valid flags
#define HF_VALID 0x00FF
"""))
]],
}],
"_HANDLEENTRY": [None, {
"pOwner": [None, ["Pointer", dict(
target="tagTHREADINFO")]],
"bFlags": [None, ["Flags", dict(
target="byte",
bitmap=utils.MaskMapFromDefines("""
// 8/17/2011
// http://www.reactos.org/wiki/Techwiki:Win32k/HANDLEENTRY
// HANDLEENTRY.bFlags
#define HANDLEF_DESTROY 0x01
#define HANDLEF_INDESTROY 0x02
#define HANDLEF_INWAITFORDEATH 0x04
#define HANDLEF_FINALDESTROY 0x08
#define HANDLEF_MARKED_OK 0x10
#define HANDLEF_GRANTED 0x20
// mask for valid flags
#define HANDLEF_VALID 0x3F
"""),
)]],
'bType': [None, ['Enumeration', dict(
target='unsigned char',
choices=constants.HANDLE_TYPE_ENUM,
)]],
}],
'_THRDESKHEAD': [None, {
"h": [None, ["unsigned int"]],
}],
}
# Reference:
# http://reactos.org/wiki/Techwiki:Win32k/structures
win32k_undocumented_AMD64 = {
# TODO: This is a hack! I do not really understand why this struct is
# sometimes very different. I have an image with the Buckets field at offset
# 0x220. This needs to be implemented using generate_types.
# win32k defines NTOS_MODE_USER which makes this struct different from the
# nt kernel one.
# http://doxygen.reactos.org/d5/df7/ndk_2rtltypes_8h_source.html
'_RTL_ATOM_TABLE': [None, {
# Technically the number of buckets is specified by this field, but this
# field varies a lot between operating systems:
# - Win7: 0x18
# - Win8.1: 0x1c (like the kernel _RTL_ATOM_TABLE)
# It is usually around 25 - if we overestimate we just work through more
# buckets - it does not matter. If we underestimate however, we will
# miss some atoms. We just set it to a large enough value here.
'NumberOfBuckets': lambda x: 0x35, # Usually this is 0x25.
# 'NumberOfBuckets': [0x18, ["unsigned long", {}]],
'Buckets': [0x20, ['Array', dict(
count=lambda x: x.NumberOfBuckets,
max_count=100,
target="Pointer",
target_args=dict(
target='_RTL_ATOM_TABLE_ENTRY')
)]],
}],
'tagEVENTHOOK' : [0x60, {
'phkNext' : [0x18, ['Pointer', dict(
target='tagEVENTHOOK'
)]],
'eventMin' : [0x20, ['Enumeration', dict(
target='unsigned long',
choices=constants.EVENT_ID_ENUM)]],
'eventMax' : [0x24, ['Enumeration', dict(
target='unsigned long',
choices=constants.EVENT_ID_ENUM)]],
'dwFlags' : [0x28, ['unsigned long']],
'idProcess' : [0x2C, ['unsigned long']],
'idThread' : [0x30, ['unsigned long']],
'offPfn' : [0x40, ['Pointer', dict(target="Void")]],
'ihmod' : [0x48, ['long']],
}],
'tagHANDLETYPEINFO' : [16, {
'fnDestroy' : [0, ['Pointer', dict(
target="Function"
)]],
'dwAllocTag' : [8, ['String', dict(length=4)]],
'bObjectCreateFlags' : [12, ['Flags', dict(
target='unsigned char',
bitmap={
'OCF_THREADOWNED': 0,
'OCF_PROCESSOWNED': 1,
'OCF_MARKPROCESS': 2,
'OCF_USEPOOLQUOTA': 3,
'OCF_DESKTOPHEAP': 4,
'OCF_USEPOOLIFNODESKTOP': 5,
'OCF_SHAREDHEAP': 6,
'OCF_VARIABLESIZE': 7}
)]],
}],
'tagCLIPDATA' : [None, {
'cbData' : [0x08, ['unsigned int']],
'abData' : [0x0C, ['Array', dict(
count=lambda x: x.cbData,
target='unsigned char')]],
}],
}
win32k_undocumented_I386 = {
'_RTL_ATOM_TABLE': [None, {
'NumberOfBuckets': [0xC, ['unsigned long']],
'Buckets': [0x10, ['Array', dict(
count=lambda x: x.NumberOfBuckets,
max_count=100,
target="Pointer",
target_args=dict(
target='_RTL_ATOM_TABLE_ENTRY')
)]],
}],
'tagEVENTHOOK' : [0x30, {
'phkNext' : [0xC, ['Pointer', dict(
target='tagEVENTHOOK'
)]],
'eventMin' : [0x10, ['Enumeration', dict(
target='unsigned long',
choices=constants.EVENT_ID_ENUM)]],
'eventMax' : [0x14, ['Enumeration', dict(
target='unsigned long',
choices=constants.EVENT_ID_ENUM)]],
'dwFlags' : [0x18, ['unsigned long']],
'idProcess' : [0x1C, ['unsigned long']],
'idThread' : [0x20, ['unsigned long']],
'offPfn' : [0x24, ['Pointer', dict(target="Void")]],
'ihmod' : [0x28, ['long']],
}],
'tagHANDLETYPEINFO' : [12, {
'fnDestroy' : [0, ['Pointer', dict(
target="Function"
)]],
'dwAllocTag' : [4, ['String', dict(length=4)]],
'bObjectCreateFlags' : [8, ['Flags', dict(
target='unsigned char',
bitmap={
'OCF_THREADOWNED': 0,
'OCF_PROCESSOWNED': 1,
'OCF_MARKPROCESS': 2,
'OCF_USEPOOLQUOTA': 3,
'OCF_DESKTOPHEAP': 4,
'OCF_USEPOOLIFNODESKTOP': 5,
'OCF_SHAREDHEAP': 6,
'OCF_VARIABLESIZE': 7}
)]],
}],
'tagCLIPDATA' : [None, {
'cbData' : [0x08, ['unsigned int']],
'abData' : [0x0C, ['Array', dict(
count=lambda x: x.cbData,
target='unsigned char')]],
}],
}
class _MM_SESSION_SPACE(obj.Struct):
"""A class for session spaces"""
def processes(self):
"""Generator for processes in this session.
A process is always associated with exactly
one session.
"""
for p in self.ProcessList.list_of_type(
"_EPROCESS", "SessionProcessLinks"):
yield p
@utils.safe_property
def Win32KBase(self):
"""Get the base address of the win32k.sys as mapped
into this session's memory.
Since win32k.sys is always the first image to be
mapped, we can just grab the first list entry."""
## An exception may be generated when a process from a terminated
## session still exists in the active process list.
try:
return list(self.images())[0].Address
except IndexError:
return obj.NoneObject("No images mapped in this session")
def images(self):
"""Generator for images (modules) loaded into
this session's space"""
for i in self.ImageList.list_of_type("_IMAGE_ENTRY_IN_SESSION", "Link"):
yield i
def _section_chunks(self, sec_name):
"""Get the win32k.sys section as an array of
32-bit unsigned longs.
@param sec_name: name of the PE section in win32k.sys
to search for.
@returns all chunks on a 4-byte boundary.
"""
## In the rare case when win32k.sys PE header is paged or corrupted
## thus preventing us from parsing the sections, use the fallback
## mechanism of just reading 5 MB (max size of win32k.sys) from the
## base of the kernel module.
section_base = self.Win32KBase
section_size = 0x500000
dos_header = self.obj_profile._IMAGE_DOS_HEADER(
offset=self.Win32KBase, vm=self.obj_vm)
for section in dos_header.NTHeader.Sections:
if section.Name == sec_name:
section_base = section.VirtualAddress
section_size = section.Misc.VirtualSize / 4
break
return self.obj_profile.Array(targetType="unsigned long",
offset=section_base,
count=section_size, vm=self.obj_vm)
def find_gahti(self):
"""Find this session's gahti.
This can potentially be much faster by searching for
'\0' * sizeof(tagHANDLETYPEINFO) instead
of moving on a dword aligned boundary through
the section.
"""
for chunk in self._section_chunks(".rdata"):
if not chunk.is_valid():
continue
gahti = obj.Object("gahti", offset=chunk.obj_offset,
vm=self.obj_vm)
## The sanity check here is based on the fact that the first entry
## in the gahti is always for TYPE_FREE. The fnDestroy pointer will
## be NULL, the alloc tag will be an empty string, and the creation
## flags will be zero. We also then check the alloc tag of the first
## USER handle type which should be Uswd (TYPE_WINDOW).
if (gahti.types[0].fnDestroy == 0 and
str(gahti.types[0].dwAllocTag) == '' and
gahti.types[0].bObjectCreateFlags == 0 and
str(gahti.types[1].dwAllocTag) == "Uswd"):
return gahti
return obj.NoneObject("Cannot find win32k!_gahti")
class _HANDLEENTRY(obj.Struct):
"""A for USER handle entries"""
def reference_object(self):
"""Reference the object this handle represents.
If the object's type is not in our map, we don't know
what type of object to instantiate so its filled with
obj.NoneObject() instead.
"""
object_map = dict(
TYPE_WINDOW="tagWND",
TYPE_HOOK="tagHOOK",
TYPE_CLIPDATA="tagCLIPDATA",
TYPE_WINEVENTHOOK="tagEVENTHOOK",
TYPE_TIMER="tagTIMER",
)
object_type = object_map.get(str(self.bType))
if object_type is None:
return obj.NoneObject("Cannot reference object type")
return self.obj_profile.Object(
object_type, offset=self.phead, vm=self.obj_vm)
@utils.safe_property
def Free(self):
"""Check if the handle has been freed"""
return str(self.bType) == "TYPE_FREE"
@utils.safe_property
def ThreadOwned(self):
"""Handles of these types are always thread owned"""
return str(self.bType) in [
'TYPE_WINDOW', 'TYPE_SETWINDOWPOS', 'TYPE_HOOK',
'TYPE_DDEACCESS', 'TYPE_DDECONV', 'TYPE_DDEXACT',
'TYPE_WINEVENTHOOK', 'TYPE_INPUTCONTEXT', 'TYPE_HIDDATA',
'TYPE_TOUCH', 'TYPE_GESTURE']
@utils.safe_property
def ProcessOwned(self):
"""Handles of these types are always process owned"""
return str(self.bType) in [
'TYPE_MENU', 'TYPE_CURSOR', 'TYPE_TIMER',
'TYPE_CALLPROC', 'TYPE_ACCELTABLE']
@utils.safe_property
def Thread(self):
"""Return the ETHREAD if its thread owned"""
if self.ThreadOwned:
return self.pOwner.\
dereference_as("tagTHREADINFO").\
pEThread.dereference()
return obj.NoneObject("Cannot find thread")
@utils.safe_property
def Process(self):
"""Return the _EPROCESS if its process or thread owned"""
if self.ProcessOwned:
return (self.pOwner.
dereference_as("tagPROCESSINFO").
Process.dereference())
elif self.ThreadOwned:
return (
self.m("pOwner.pEThread.ThreadsProcess").deref() or
self.pOwner.ppi.Process.dereference() or
self.pOwner.pEThread.Tcb.Process.dereference_as(
"_EPROCESS"))
return obj.NoneObject("Cannot find process")
class tagWINDOWSTATION(obj.Struct):
"""A class for Windowstation objects"""
def is_valid(self):
return (super(tagWINDOWSTATION, self).is_valid() and
self.dwSessionId < 0xFF)
@utils.safe_property
def LastRegisteredViewer(self):
"""The EPROCESS of the last registered clipboard viewer"""
return self.m("spwndClipViewer.head.pti.ppi.Process")
@utils.safe_property
def Interactive(self):
"""Check if a window station is interactive"""
return not self.dwWSF_Flags & 4 # WSF_NOIO
@utils.safe_property
def Name(self):
"""Get the window station name.
Since window stations are securable objects, and are managed by the same
object manager as processes, threads, etc, there is an object header
which stores the name.
"""
object_hdr = self.obj_session.profile._OBJECT_HEADER(
vm=self.obj_vm,
offset=self.obj_offset - self.obj_session.profile.get_obj_offset(
'_OBJECT_HEADER', 'Body')
)
return object_hdr.NameInfo.Name
def desktops(self):
"""A generator that yields the window station's desktops"""
return self.rpdeskList.walk_list("rpdeskNext")
class tagDESKTOP(tagWINDOWSTATION):
"""A class for Desktop objects"""
def is_valid(self):
return obj.Struct.is_valid(self) and self.dwSessionId < 0xFF
@utils.safe_property
def WindowStation(self):
"""Returns this desktop's parent window station"""
return self.rpwinstaParent.dereference()
@utils.safe_property
def DeskInfo(self):
"""Returns the desktop info object"""
return self.pDeskInfo.dereference()
def threads(self):
"""Generator for _EPROCESS objects attached to this desktop"""
for ti in self.PtiList.list_of_type("tagTHREADINFO", "PtiLink"):
yield ti
def hooks(self):
"""Generator for tagHOOK info."""
fsHooks = self.DeskInfo.fsHooks
for pos, (name, value) in enumerate(constants.MESSAGE_TYPES):
# Is the bit for this message type WH_* value set ?
if fsHooks & (1 << value + 1):
for hook in self.DeskInfo.aphkStart[pos].walk_list("phkNext"):
yield name, hook
def windows(self, win, filter=lambda x: True, level=0):
"""Traverses windows in their Z order, bottom to top.
@param win: an HWND to start. Usually this is the desktop
window currently in focus.
@param filter: a callable (usually lambda) to use for filtering
the results. See below for examples:
# only print subclassed windows
filter = lambda x : x.lpfnWndProc == x.pcls.lpfnWndProc
# only print processes named csrss.exe
filter = lambda x : str(x.head.pti.ppi.Process.ImageFileName).lower() \
== "csrss.exe" if x.head.pti.ppi else False
# only print processes by pid
filter = lambda x : x.head.pti.pEThread.Cid.UniqueThread == 0x1020
# only print visible windows
filter = lambda x : 'WS_VISIBLE' not in x.get_flags()
"""
seen = set()
wins = []
cur = win
while cur.is_valid() and cur.v() != 0:
if cur in seen:
break
seen.add(cur)
wins.append(cur)
cur = cur.spwndNext.dereference()
while wins:
cur = wins.pop()
if not filter(cur):
continue
yield cur, level
if cur.spwndChild.is_valid() and cur.spwndChild.v() != 0:
for info in self.windows(
cur.spwndChild, filter=filter, level=level+1):
yield info
def heaps(self):
"""Generator for the desktop heaps"""
for segment in self.pheapDesktop.Heap.segments():
for entry in segment.heap_entries():
yield entry
def traverse(self, vm=None):
"""Generator for next desktops in the list"""
# Include this object in the results
yield self
# Now walk the singly-linked list
nextdesk = self.rpdeskNext.dereference(vm=vm)
while nextdesk.is_valid() and nextdesk.v() != 0:
yield nextdesk
nextdesk = nextdesk.rpdeskNext.dereference(vm=vm)
class tagWND(obj.Struct):
"""A class for window structures"""
@utils.safe_property
def IsClipListener(self):
"""Check if this window listens to clipboard changes"""
return self.bClipboardListener.v()
@utils.safe_property
def ClassAtom(self):
"""The class atom for this window"""
return self.pcls.atomClassName
@utils.safe_property
def SuperClassAtom(self):
"""The window's super class"""
return self.pcls.atomNVClassName
@utils.safe_property
def Process(self):
"""The EPROCESS that owns the window"""
return self.head.pti.ppi.Process.dereference()
@utils.safe_property
def Thread(self):
"""The ETHREAD that owns the window"""
return self.head.pti.pEThread.dereference()
@utils.safe_property
def Visible(self):
"""Is this window visible on the desktop"""
return 'WS_VISIBLE' in self.style
def _get_flags(self, member, flags):
if flags.has_key(member):
return flags[member]
return ','.join([n for (n, v) in flags.items() if member & v == v])
@utils.safe_property
def style(self):
"""The basic style flags as a string"""
return self._get_flags(self.m('style').v(), constants.WINDOW_STYLES)
@utils.safe_property
def ExStyle(self):
"""The extended style flags as a string"""
return self._get_flags(
self.m('ExStyle').v(), constants.WINDOW_STYLES_EX)
class tagRECT(obj.Struct):
"""A class for window rects"""
def get_tup(self):
"""Return a tuple of the rect's coordinates"""
return (self.left, self.top, self.right, self.bottom)
class tagCLIPDATA(obj.Struct):
"""A class for clipboard objects"""
def as_string(self, fmt):
"""Format the clipboard data as a string.
@param fmt: the clipboard format.
Note: we cannot simply override __str__ for this
purpose, because the clipboard format is not a member
of (or in a parent-child relationship with) the
tagCLIPDATA structure, so we must pass it in as
an argument.
"""
if fmt == "CF_UNICODETEXT":
encoding = "utf16"
else:
encoding = "utf8"
return obj.String(
offset=self.abData.obj_offset,
vm=self.obj_vm, encoding=encoding,
length=self.cbData)
def as_hex(self):
"""Format the clipboard contents as a hexdump"""
data = ''.join([chr(c) for c in self.abData])
return "".join(["{0:#x} {1:<48} {2}\n".format(
self.abData.obj_offset + o, h, ''.join(c))
for o, h, c in utils.Hexdump(data)])
class tagTHREADINFO(obj.Struct):
"""A class for thread information objects"""
def hooks(self):
"""Generator for tagHOOK info."""
fsHooks = self.fsHooks
for pos, (name, value) in enumerate(constants.MESSAGE_TYPES):
# Is the bit for this message type WH_* value set ?
if fsHooks & (1 << value + 1):
for hook in self.aphkStart[pos].walk_list("phkNext"):
yield name, hook
class tagEVENTHOOK(obj.Struct):
"""A class for event hooks"""
@utils.safe_property
def dwFlags(self):
"""Event hook flags need special handling so we can't use vtypes"""
# First we shift the value
f = self.m('dwFlags') >> 1
flags = [
name for (val, name) in constants.EVENT_FLAGS.items() if f & val]
return '|'.join(flags)
class _RTL_ATOM_TABLE(obj.Struct):
"""A class for atom tables"""
def __init__(self, **kwargs):
"""Give ourselves an atom cache for quick lookups"""
self.atom_cache = {}
super(_RTL_ATOM_TABLE, self).__init__(**kwargs)
def is_valid(self):
"""Check for validity based on the atom table signature
and the maximum allowed number of buckets"""
return (super(_RTL_ATOM_TABLE, self).is_valid() and
self.Signature == 0x6d6f7441 and
self.NumberOfBuckets < 0xFFFF)
def atoms(self, vm=None):
"""Carve all atoms out of this atom table"""
for bucket in self.Buckets:
for entry in bucket.deref(vm=vm).walk_list("HashLink"):
if entry.Atom < 0xf000:
yield entry
def find_atom(self, atom_to_find, use_cache=False):
"""Find an atom by its ID.
@param atom_to_find: the atom ID (ushort) to find
@returns an _RTL_ATOM_TALE_ENTRY object
"""
atom_to_find = int(atom_to_find)
not_found = obj.NoneObject("Atom not found")
# Use the cached results if they exist
if use_cache:
if self.atom_cache:
return self.atom_cache.get(atom_to_find, not_found)
# Build the atom cache
self.atom_cache = dict(
(int(atom.Atom), atom) for atom in self.atoms())
return self.atom_cache.get(atom_to_find, not_found)
else:
# We often instantiate this atom table once - in this case its not
# worth caching it.
for atom in self.atoms():
if atom.Atom == atom_to_find:
return atom
return not_found
class _RTL_ATOM_TABLE_ENTRY(obj.Struct):
"""A class for atom table entries"""
def is_string_atom(self):
"""Returns True if the atom is a string atom
based on its atom ID.
A string atom has ID 0xC000 - 0xFFFF
"""
return self.Atom >= 0xC000 and self.Atom <= 0xFFFF
def is_valid(self):
"""Perform some sanity checks on the Atom"""
if not super(_RTL_ATOM_TABLE_ENTRY, self).is_valid():
return False
# There is only one flag (and zero)
if self.Flags not in (0, 1):
return False
# There is a maximum name length enforced
return self.NameLength <= 255
class Win32kPluginMixin(object):
"""A mixin which loads the relevant win32k profile."""
@classmethod
def args(cls, parser):
super(Win32kPluginMixin, cls).args(parser)
parser.add_argument("--win32k_profile", default=None,
help="Force this profile to be used for Win32k.")
def _is_valid(self, profile):
"""Returns true if the profile is a valid win32k one."""
return profile.get_constant("grpWinStaList")
def __init__(self, win32k_profile=None, **kwargs):
super(Win32kPluginMixin, self).__init__(**kwargs)
# For the address resolver to load this GUID.
if win32k_profile:
self.session.SetCache("win32k_profile", win32k_profile)
# Ask the address resolver to load this profile.
module = self.session.address_resolver.GetModuleByName("win32k")
self.win32k_profile = module.profile
# If the resolver loads the dummy profile this is not good enough.
if not self._is_valid(self.win32k_profile):
raise RuntimeError("Unable to load the profile for Win32k.sys")
class Win32k(pe_vtypes.BasicPEProfile):
"""A profile for the Win32 GUI system."""
guessed_types = False
@staticmethod
def _LoadExempler(profile):
# Prior to Windows 7, Microsoft did not release symbols for win32k
# structs. However, we know that these are basically the same across
# different versions. Here we just copy them from the windows 7
# profiles.
arch = profile.metadata("arch")
if arch == "AMD64":
exempler = ("win32k/GUID/"
"99227A2085CE41969CD5A06F7CC20F522")
else:
exempler = ("win32k/GUID/"
"18EB20F5448A47F5B850023FEE0B24D62")
result = profile.session.LoadProfile(exempler)
if result == None:
raise RuntimeError("Unable to load exempler profile %s" % exempler)
return result
@classmethod
def Initialize(cls, profile):
super(Win32k, cls).Initialize(profile)
# Merge the kernel's symbols for _RTL_ATOM_TABLE etc.
profile.merge(profile.session.profile)
# Some constants - These will probably change in win8 which does not
# allow non ascii tags.
profile.add_constants(dict(PoolTag_WindowStation="Win\xe4",
PoolTag_Atom="AtmT"))
profile.add_classes({
'tagWINDOWSTATION': tagWINDOWSTATION,
'tagDESKTOP': tagDESKTOP,
'_RTL_ATOM_TABLE': _RTL_ATOM_TABLE,
'_RTL_ATOM_TABLE_ENTRY': _RTL_ATOM_TABLE_ENTRY,
'tagTHREADINFO': tagTHREADINFO,
'tagWND': tagWND,
'_HANDLEENTRY': _HANDLEENTRY,
'tagEVENTHOOK': tagEVENTHOOK,
'tagRECT': tagRECT,
'tagCLIPDATA': tagCLIPDATA,
})
profile.add_overlay(win32k_overlay)
if profile.metadata("arch") == "AMD64":
profile.add_overlay(win32k_undocumented_AMD64)
else:
profile.add_overlay(win32k_undocumented_I386)
exempler = None
required_types = ["tagWINDOWSTATION", "tagDESKTOP", "tagTHREADINFO",
"tagWND", "tagDESKTOPINFO", "tagPROCESSINFO",
"tagSHAREDINFO", "_HANDLEENTRY", "_HEAD", "tagHOOK",
"_THRDESKHEAD", "_WNDMSG", "tagSERVERINFO"]
for item in required_types:
if not profile.has_type(item):
# Mark the profile as guessed - its not as good as the real
# thing, but its a starting point where win32k_autodetect can
# start with.
profile.guessed_types = True
if exempler is None:
win7_profile = cls._LoadExempler(profile)
profile.vtypes[item] = win7_profile.vtypes[item]
# Specific support for xp types.
version = profile.metadata('version')
arch = profile.metadata("arch")
if version < 6.0:
if arch == "I386":
profile.add_types(xp.vtypes_xp_32)
else:
profile.add_types(xp.vtypes_xp_64)
if profile.guessed_types:
profile.session.logging.debug(
"Win32k profile is incomplete - attempting autodetection.")
profile.add_overlay(
profile.session.plugins.win32k_autodetect().GetWin32kOverlay(
profile))
# The below code needs refactoring.
return profile
# Add autogenerated vtypes for the different versions.
if version.startswith("6.1"): # Windows 7
from rekall.plugins.windows.gui.vtypes import win7
profile = win7.Win32GUIWin7.modify(profile)
else:
profile = xp.XP2003x86BaseVTypes.modify(profile)
# The type we want to use is not the same as the one already defined
# see http://code.google.com/p/volatility/issues/detail?id=131
profile.add_overlay({
'gahti': [None, {
'types': [0, ['Array', dict(
count=num_handles,
target='tagHANDLETYPEINFO')]],
}],
'tagWIN32HEAP': [None, {
'Heap': [0, ['_HEAP']],
}],
'tagCLIPDATA' : [None, {
'cbData' : [0x08, ['unsigned int']],
'abData' : [0x0C, ['Array', dict(
count=lambda x: x.cbData,
target='unsigned char')]],
}],
})
# The 64 bit versions of these structs just have their members in
# different offsets.
if architecture == "AMD64":
profile.add_overlay({
'_RTL_ATOM_TABLE': [None, {
'NumberOfBuckets': [0x18, ['unsigned long']],
'Buckets': [0x20, ['Array', dict(
count=lambda x: x.NumBuckets,
target="Pointer",
target_args=dict(
target='_RTL_ATOM_TABLE_ENTRY')
)]],
}],
'tagCLIPDATA' : [None, {
'cbData' : [0x10, None],
'abData' : [0x14, None],
}],
'tagEVENTHOOK' : [0x60, {
'phkNext' : [0x18, None],
'eventMin' : [0x20, None],
'eventMax' : [0x24, None],
'dwFlags' : [0x28, None],
'idProcess' : [0x2C, None],
'idThread' : [0x30, None],
'offPfn' : [0x40, None],
'ihmod' : [0x48, None],
}],
'tagHANDLETYPEINFO' : [16, {
'dwAllocTag' : [8, None],
'bObjectCreateFlags' : [12, None],
}],
})
# This field appears in the auto-generated vtypes for all OS except XP
if architecture == "I386" and version[:2] == (5, 1):
profile.add_overlay({
'_MM_SESSION_SPACE': [None, {
# nt!MiDereferenceSession
'ResidentProcessCount': [0x248, ['long']],
}]})
return profile
class Win32kHook(kb.ParameterHook):
"""Guess the version of win32k.sys from the index.
NOTE: Win32k needs special attention because it is often not easily
detected.
"""
name = "win32k_profile"
def calculate(self):
# Require at least 3 comparison points to be matched.
for _, guess in self.session.plugins.guess_guid(
module="win32k", minimal_match=3).GuessProfiles():
return guess
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