/usr/lib/python2.7/dist-packages/rekall/plugins/tools/live_windows.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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# Rekall Memory Forensics
# Copyright 2015 Google Inc. All Rights Reserved.
#
# Author: Michael Cohen scudette@google.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
#
__author__ = "Michael Cohen <scudette@google.com>"
"""A plugin to install relevant kernel modules to enable live analysis.
The intention is to allow the user to launch:
rekall live
and have Rekall install the right kernel module and connect to the driver on all
supported operating systems.
"""
import os
import platform
import re
import win32service
from rekall import session
from rekall import resources
from rekall import plugin
from rekall import obj
from rekall.plugins.addrspaces import win32
class Live(plugin.TypedProfileCommand,
plugin.ProfileCommand):
"""Launch a Rekall shell for live analysis on the current system."""
name = "live"
PROFILE_REQUIRED = False
__args = [
dict(name="mode", default="Memory", type="Choices",
choices=session.LIVE_MODES,
help="Mode for live analysis."),
dict(name="driver",
help="Driver file to load"),
dict(name="device", default=r"\\.\pmem",
help="Device name to use"),
dict(name="service_name", default=r"pmem",
help="Service name to use")
]
table_header = [
dict(name="Message")
]
def __init__(self, *args, **kw):
super(Live, self).__init__(*args, **kw)
# It is OK for non privileged sessions to use the default drivers.
if not self.session.privileged and self.plugin_args.driver:
raise plugin.PluginError(
"Installing arbitrary drivers is only available for "
"interactive or privileged sessions.")
# Did we start the service? If so we need to clean up.
self.we_started_service = False
self.hScm = None
self.hSvc = None
exception_format_regex = re.compile(r": \((\d+),")
def parse_exception(self, e):
"""Yes! seriously there is no way to get at the real error code."""
# We often see code like if "Access Denied" in str(e):... but
# this is unreliable since the message will be different when
# different language packs are used. The best way is to
# compare the numeric error code, but this is not exported. In
# our testing e.errno is not being set properly by pywin32.
m = self.exception_format_regex.search(str(e))
if m:
return int(m.group(1))
def load_driver(self):
"""Load the driver if possible."""
# Check the driver is somewhere accessible.
if self.plugin_args.driver is None:
# Valid values
# http://superuser.com/questions/305901/possible-values-of-processor-architecture
machine = platform.machine()
if machine == "AMD64":
driver = "winpmem_x64.sys"
elif machine == "x86":
driver = "winpmem_x86.sys"
else:
raise plugin.PluginError("Unsupported architecture")
self.plugin_args.driver = resources.get_resource(
"WinPmem/%s" % driver)
# Try the local directory
if self.plugin_args.driver is None:
self.plugin_args.driver = os.path.join(
os.getcwd(), "WinPmem", driver)
self.session.logging.debug("Loading driver from %s",
self.plugin_args.driver)
if not os.access(self.plugin_args.driver, os.R_OK):
raise plugin.PluginError(
"Driver file %s is not accessible." % self.plugin_args.driver)
self.hScm = win32service.OpenSCManager(
None, None, win32service.SC_MANAGER_CREATE_SERVICE)
# First uninstall the driver
self.remove_service(also_close_as=False)
try:
self.hSvc = win32service.CreateService(
self.hScm, self.plugin_args.service_name,
self.plugin_args.service_name,
win32service.SERVICE_ALL_ACCESS,
win32service.SERVICE_KERNEL_DRIVER,
win32service.SERVICE_DEMAND_START,
win32service.SERVICE_ERROR_IGNORE,
self.plugin_args.driver,
None, 0, None, None, None)
self.session.logging.debug("Created service %s",
self.plugin_args.service_name)
# Remember to cleanup afterwards.
self.we_started_service = True
except win32service.error as e:
# Service is already there, try to open it instead.
self.hSvc = win32service.OpenService(
self.hScm, self.plugin_args.service_name,
win32service.SERVICE_ALL_ACCESS)
# Make sure the service is stopped.
try:
win32service.ControlService(
self.hSvc, win32service.SERVICE_CONTROL_STOP)
except win32service.error:
pass
try:
win32service.StartService(self.hSvc, [])
except win32service.error, e:
self.session.logging.debug("%s: will try to continue", e)
try:
return win32.WinPmemAddressSpace(
session=self.session, filename=self.plugin_args.device)
except IOError as e:
raise plugin.PluginError(*e.args)
def live(self):
if self.plugin_args.mode == "Memory":
phys_as = obj.NoneObject("Unable to access physical memory")
try:
phys_as = win32.WinPmemAddressSpace(
session=self.session, filename=self.plugin_args.device)
self.session.logging.debug("Using PMEM driver at %s",
self.plugin_args.device)
except IOError as e:
self.session.logging.debug("%s", e)
errno = self.parse_exception(e)
if errno == 5: # Access Denied.
self.session.logging.error(
"%s. Are you running as Administrator?" % e)
elif errno == 2: # File not found
try:
phys_as = self.load_driver()
except plugin.PluginError:
self.session.logging.error(
"Unable to load driver: %s." % e)
else:
self.session.logging.error(
"Unable to access physical memory: %s." % e)
self.session.physical_address_space = phys_as
with self.session:
self.session.SetParameter("live_mode", self.plugin_args.mode)
self.session.SetParameter("session_name", "Live (%s)" %
self.plugin_args.mode)
def remove_service(self, also_close_as=True):
self.session.logging.debug("Removing service %s",
self.plugin_args.service_name)
# Make sure the handle is closed.
if also_close_as:
self.session.physical_address_space.close()
# Stop the service if it's running.
if not self.hSvc:
try:
self.hSvc = win32service.OpenService(
self.hScm, self.plugin_args.service_name,
win32service.SERVICE_ALL_ACCESS)
except win32service.error:
self.session.logging.debug("%s service does not exist.",
self.plugin_args.service_name)
if self.hSvc:
self.session.logging.debug("Stopping service: %s",
self.plugin_args.service_name)
try:
win32service.ControlService(
self.hSvc, win32service.SERVICE_CONTROL_STOP)
except win32service.error as e:
self.session.logging.debug("Error stopping service: %s", e)
self.session.logging.debug("Deleting service: %s",
self.plugin_args.service_name)
try:
win32service.DeleteService(self.hSvc)
except win32service.error as e:
self.session.logging.debug("Error deleting service: %s", e)
win32service.CloseServiceHandle(self.hSvc)
def close(self):
if self.we_started_service:
self.remove_service()
def __enter__(self):
self.live()
return self
def __exit__(self, exc_type, exc_value, trace):
self.close()
def collect(self):
yield ("Launching live memory analysis\n",)
try:
self.live()
renderer = self.session.GetRenderer()
# Launch the shell.
shell = self.session.plugins.shell()
shell.render(renderer)
finally:
self.close()
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