/usr/lib/python2.7/dist-packages/rekall/plugins/hypervisors.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 | """Implements scanners and plugins to find hypervisors in memory."""
from itertools import groupby
import struct
from rekall import plugin
from rekall import obj
from rekall import utils
from rekall import scan
from rekall import session as session_module
from rekall.plugins.addrspaces import amd64
from rekall.plugins.addrspaces import intel
from rekall.plugins.overlays import basic
KNOWN_REVISION_IDS = {
# Nested hypervisors
# VMware Workstation 10.X
0x01: "VMWARE_NESTED",
# KVM
0x11e57ed0: "KVM_NESTED",
# XEN
0xda0400: "XEN_NESTED",
# Intel VT-x microarchitectures.
0x0d: "PENRYN",
0x0e: "NEHALEM",
0x0f: "WESTMERE",
0x10: "SANDYBRIDGE",
0x12: "HASWELL",
}
# TODO: Find more abort codes.
KNOWN_ABORT_INDICATOR_CODES = {
'\x00\x00\x00\x00': "NO ABORT",
'\x05\x00\x00\x00': "MACHINE CHECK DURING VM EXIT",
'\x0d\x00\x00\x00': "TXT SHUTDOWN",
}
vmcs_overlay = {
'NEHALEM_VMCS' : [None, {
'IS_NESTED': lambda x: False,
}],
'SANDYBRIDGE_VMCS' : [None, {
'IS_NESTED': lambda x: False,
}],
'HASWELL_VMCS' : [None, {
'IS_NESTED': lambda x: False,
}],
'WESTMERE_VMCS' : [None, {
'IS_NESTED': lambda x: False,
}],
'PENRYN_VMCS' : [None, {
'IS_NESTED': lambda x: False,
}],
'VMWARE_NESTED_VMCS' : [None, {
'IS_NESTED': lambda x: True,
}],
'KVM_NESTED_VMCS' : [None, {
'IS_NESTED': lambda x: True,
}],
'XEN_NESTED_VMCS' : [None, {
'IS_NESTED': lambda x: True,
}],
}
class Error(Exception):
"""Base exception."""
class UnrelatedVmcsError(Error):
"""The provided VMCS is unrelated to the VM."""
class IncompatibleASError(Error):
"""An attempt was done at comparing VMCS from different address spaces."""
class InvalidVM(Error):
"""The provided VM is invalid."""
class VMCSProfile(basic.ProfileLP64):
"""Profile to parse hypervisor control structures.
We use the basic profile for 64 bit Linux systems to get the expected width
for each data type.
"""
@classmethod
def Initialize(cls, profile):
super(VMCSProfile, cls).Initialize(profile)
profile.add_overlay(vmcs_overlay)
class VMCSCheck(scan.ScannerCheck):
def check(self, buffer_as, offset):
# CHECK 1: Verify that the VMX-Abort indicator has a known value.
#
# The VMX-Abort indicator field is always at offset 4 in the VMCS
# and is a 32-bit field.
# This field should be 0 unless the memory image was taken while a
# VMX-abort occurred, which is fairly unlikely. Also, if a VMX-abort
# occurs, only a set of values are supposed to be set.
if buffer_as.read(offset+4, 4) not in KNOWN_ABORT_INDICATOR_CODES:
return False
# Obtain the Revision ID
(revision_id,) = struct.unpack_from("<I", buffer_as.read(offset, 4))
revision_id = revision_id & 0x7FFFFFFF
# Obtain a VMCS object based on the revision_id
platform = KNOWN_REVISION_IDS.get(revision_id)
if platform is None:
return False
try:
vmcs_obj = self.profile.Object("%s_VMCS" % platform,
offset=offset,
vm=buffer_as)
except (AttributeError, TypeError):
return False
# CHECK 2: Verify that the VMCS has the VMX flag enabled.
if not vmcs_obj.HOST_CR4 & 0x2000:
return False
# CHECK 3: Verify that VMCS_LINK_POINTER is
# 0xFFFFFFFFFFFFFFFF.
if vmcs_obj.VMCS_LINK_PTR_FULL != 0xFFFFFFFFFFFFFFFF:
return False
return True
class VMCSScanner(scan.BaseScanner):
"""Scans the memory attempting to find VMCS structures.
Uses the techniques discussed on "Hypervisor Memory Forensics"
(http://s3.eurecom.fr/docs/raid13_graziano.pdf) with slight changes
to identify VT-x hypervisors.
"""
overlap = 0
checks = [["VMCSCheck", {}]]
def __init__(self, **kwargs):
super(VMCSScanner, self).__init__(**kwargs)
self.profile = self.session.LoadProfile("VMCS")
def scan(self, offset=0, end=None, **_):
"""Returns instances of VMCS objects found."""
for offset in super(VMCSScanner, self).scan(offset=offset, end=end):
(revision_id,) = struct.unpack("<I",
self.address_space.read(offset, 4))
revision_id = revision_id & 0x7FFFFFFF
vmcs_obj = self.profile.Object(
"%s_VMCS" % KNOWN_REVISION_IDS.get(revision_id),
offset=offset, vm=self.address_space)
yield vmcs_obj
def skip(self, buffer_as, offset):
return 0x1000
class VirtualMachine(object):
"""Represents a virtual machine.
A virtual machine is made of VMCS. In Intel processors, each CPU that runs
a VM will have its own VMCS.
"""
def __init__(self, host_rip=None, ept=None, parent=None, name=None,
session=None):
self.ept = long(ept)
self.host_rip = long(host_rip)
self.parent = parent
self.name = name
self.base_session = session
self.vmcss = set()
# Dictionary where the key is a VMCS object and the value
# represents whether the VMCS is valid, or not.
self.vmcs_validation = dict()
self.virtual_machines = set()
@utils.safe_property
def is_valid(self):
"""A VM is valid if at least one of its VMCS is valid."""
if any([self.vmcs_validation.get(vmcs, False) for vmcs in self.vmcss]):
return True
return False
@utils.safe_property
def is_nested(self):
"""A VM is nested if it has a parent or all its VMCS are nested."""
return self.parent != None
@utils.safe_property
def hostname(self):
try:
session = self.GetSession()
return session.plugins.hostname().get_hostname()
except AttributeError:
return obj.NoneObject()
except InvalidVM:
return obj.NoneObject("**INVALID VM**")
@utils.safe_property
def num_cores(self):
"""The number of virtual cores of this VM."""
valid_vmcss = filter(self.is_valid_vmcs, self.vmcss)
# Count only unique VPIDs if the hypervisor uses them.
uniq_vpids = set([v.VPID for v in valid_vmcss])
if len(uniq_vpids) != 1:
return len(uniq_vpids)
else:
return len(valid_vmcss)
@utils.safe_property
def host_arch(self):
"""The architecture of the host that started this VM."""
all_host_as = set([self.get_vmcs_host_as_type(v) for v in self.vmcss
if self.is_valid_vmcs(v)])
if len(all_host_as) == 1:
return all_host_as.pop()
return "???"
@utils.safe_property
def guest_arch(self):
"""The architecture of the guest OS of the VM."""
all_guest_as = set([self.get_vmcs_guest_as_type(v) for v in self.vmcss
if self.is_valid_vmcs(v)])
if len(all_guest_as) == 1:
return all_guest_as.pop()
return "???"
@utils.safe_property
def ept_list(self):
"""The list of EPT values needed to instantiate VM guest physical AS.
This is used in conjunction with the VTxPagedMemory AS.
"""
if isinstance(self.parent, VirtualMachine):
ept_list = self.parent.ept_list
ept_list.extend([self.ept])
else:
ept_list = [self.ept]
return ept_list
@utils.safe_property
def physical_address_space(self):
"""The physical address space of this VM's guest."""
if self.is_nested:
base_as = self.parent.physical_address_space
else:
base_as = self.base_session.physical_address_space
return amd64.VTxPagedMemory(
session=self.base_session, ept=self.ept_list, base=base_as)
@classmethod
def get_vmcs_guest_as_type(cls, vmcs):
"""Returns the address space type of the guest of a VMCS.
One of I386, I386+PAE, AMD64 or None.
"""
if not vmcs.GUEST_CR4 & (1 << 5): # PAE bit
# No PAE
return "I386"
elif not vmcs.ENTRY_CONTROLS & (1 << 9): # long mode bit
# PAE and no long mode = 32bit PAE
return "I386+PAE"
elif vmcs.ENTRY_CONTROLS & (1 << 9): # long mode bit
# Long mode AND PAE = IA-32e
return "AMD64"
else:
# We don't have an address space for other paging modes
return None
@classmethod
def get_vmcs_host_as_type(cls, vmcs):
"""Returns the address space type of the host of a VMCS.
One of I386, I386+PAE, AMD64 or None.
"""
if not vmcs.HOST_CR4 & (1 << 5): # PAE bit
# No PAE
return "I386"
elif not vmcs.EXIT_CONTROLS & (1 << 9): # long mode bit
# PAE and no long mode = 32bit PAE
return "I386+PAE"
elif vmcs.EXIT_CONTROLS & (1 << 9): # long mode bit
# Long mode AND PAE = IA-32e
return "AMD64"
else:
# We don't have an address space for other paging modes
return None
@classmethod
def get_vmcs_host_address_space(cls, vmcs, base_as=None):
"""Returns the address_space of the host of the VMCS."""
return cls.get_vmcs_address_space(vmcs, host=True, base_as=base_as)
@classmethod
def get_vmcs_guest_address_space(cls, vmcs, base_as=None):
"""Returns the address_space of the guest of the VMCS."""
return cls.get_vmcs_address_space(vmcs, host=False, base_as=base_as)
@classmethod
def get_vmcs_address_space(cls, vmcs, host=True, base_as=None):
"""Returns the address_space of the host or guest process of a VMCS."""
address_space = None
base_as = base_as or vmcs.obj_vm
if host:
cr4 = vmcs.HOST_CR4
cr3 = vmcs.HOST_CR3
controls = vmcs.EXIT_CONTROLS
else:
cr4 = vmcs.GUEST_CR4
cr3 = vmcs.GUEST_CR3
controls = vmcs.ENTRY_CONTROLS
if not cr4 & (1 << 5): # PAE bit
# No PAE
address_space = intel.IA32PagedMemory(dtb=cr3, base=base_as)
elif not controls & (1 << 9): # long mode bit
# PAE and no long mode = 32bit PAE
address_space = intel.IA32PagedMemoryPae(dtb=cr3, base=base_as)
elif controls & (1 << 9): # long mode bit
# Long mode AND PAE = IA-32e
address_space = amd64.AMD64PagedMemory(dtb=cr3, base=base_as)
return address_space
def add_vmcs(self, vmcs, validate=True):
"""Add a VMCS to this virtual machine.
Raises:
UnrelatedVmcsError if the VMCS doesn't match the VM's HOST_RIP or EPT.
"""
if self.host_rip == None:
self.host_rip = long(vmcs.HOST_RIP)
if self.ept == None:
self.ept = long(vmcs.m("EPT_POINTER_FULL"))
if self.host_rip != vmcs.HOST_RIP:
raise UnrelatedVmcsError("VMCS HOST_RIP differ from the VM's")
if vmcs.m("EPT_POINTER_FULL") != self.ept:
raise UnrelatedVmcsError("VMCS EPT differs from the VM's")
if validate:
self.validate_vmcs(vmcs)
self.vmcss.add(vmcs)
def set_parent(self, parent):
"""Sets the parent of this VM and resets the validation cache."""
if self.parent != parent:
self.parent = parent
self.vmcs_validation.clear()
def unset_parent(self):
self.set_parent(None)
def validate_vmcs(self, vmcs):
"""Validates a VMCS and returns if it's valid in this VM's context.
A VMCS is valid if the page where it's mapped is found in the HOST_CR3
that it points to. The result of this validation is cached. Use
the _reset_validation_state method if you need to invalidate cache
entries.
A VMCS object will only validate properly if its defined in the context
of the address space of the physical AS of the parent of the VM.
"""
if vmcs in self.vmcs_validation:
return self.vmcs_validation.get(vmcs)
validated = False
# EPTP bits 11:6 are reserved and must be set to 0
# and the page_walk_length, bits 5:3, must be 3 (4 - 1)
#
# Ref: Intel(r) 64 and IA-32 Architectures Software Developer's Manual -
# System Programming Guide Volume 3B, 21-20, 21.6.11
page_walk_length = (vmcs.EPT_POINTER_FULL & 0b111000) >> 3
if (vmcs.EPT_POINTER_FULL & 0b111111000000 or
page_walk_length != 3):
self.vmcs_validation[vmcs] = validated
return validated
# If we are dealing with L1 VMCS, the address space to validate
# is the same as the VMCS.
try:
validation_as = self.get_vmcs_host_address_space(vmcs)
except TypeError:
return False
for run in validation_as.get_mappings():
if self.base_session:
self.base_session.report_progress(
"Validating VMCS %08X @ %08X" % (
vmcs.obj_offset, run.start))
if (vmcs.obj_offset >= run.file_offset and
vmcs.obj_offset < run.file_offset + run.length):
validated = True
break
self.vmcs_validation[vmcs] = validated
return validated
def is_valid_vmcs(self, vmcs):
"""Returns whether the vmcs is valid or None if it wasn't validated.
Doesn't force validation.
"""
return self.vmcs_validation.get(vmcs)
def GetSession(self):
"""Returns a session valid for this VM."""
if not self.is_valid:
raise InvalidVM()
session_override = {
"ept": self.ept_list,
"profile": None,
"session_name": u"VM %s" % u','.join(
[u'0x%X' % s for s in self.ept_list]),
}
return self.base_session.clone(**session_override)
def RunPlugin(self, plugin_name, *args, **kwargs):
"""Runs a plugin in the context of this virtual machine."""
vm_sess = self.GetSession()
return vm_sess.RunPlugin(plugin_name, *args, **kwargs)
def add_nested_vms(self, vm_list, validate_all=True):
"""Tries to add the list of VMs as nested VMs of this one.
To validate nested VMs, we need to see if its identifying VMCS are
mapped in our physical AS and then try to validate them via HOST_CR3
in our context.
"""
_ = validate_all # TODO: Not currently implemented.
if not vm_list:
return
# If a VM is running under us, its VMCS has to be mapped in our
# physical address space.
phys_as = self.physical_address_space
for run in phys_as.get_mappings():
for vm in vm_list:
if self.base_session:
self.base_session.report_progress(
u"Validating VM(%X) > VM(%X) @ %#X",
self.ept, vm.ept, run.file_offset)
for vmcs in vm.vmcss:
# Skip VMCS that we already validated
if vm.is_valid_vmcs(vmcs):
continue
# This step makes sure the VMCS is mapped in the
# Level1 guest physical memory (us).
if (run.file_offset <= vmcs.obj_offset and
vmcs.obj_offset < run.file_offset + run.length):
# Now we need to validate the VMCS under our context.
# For this we need to fix the VMCS AS and its offset.
vm.set_parent(self)
vmcs_stored_vm = vmcs.obj_vm
vmcs_stored_offset = vmcs.obj_offset
# Change the VMCS to be mapped in this VM's physical AS.
vmcs.obj_vm = self.physical_address_space
# The new offset is the run.start + the offset within
# the physical page. We need to do this when we're
# dealing with large/huge pages.
# Note that run.start here really means the physical
# address of the L1 guest. run.file_offset means the
# physical address of the base AS (the host).
vmcs.obj_offset = (run.start +
(run.file_offset - vmcs.obj_offset))
if vm.validate_vmcs(vmcs):
# This steps validates that the VMCS is mapped in
# the Level1 guest hypervisor AS.
self.virtual_machines.update([vm])
else:
# Reset the VMCS settings
vmcs.obj_vm = vmcs_stored_vm
vmcs.obj_offset = vmcs_stored_offset
# If any of the VMs was found to be nested, remove it from the vm_list
for vm in self.virtual_machines:
try:
vm_list.remove(vm)
except ValueError:
pass
def _reset_validation_state(self, vmcs):
"""Invalidates the vmcs validation cache entry for vmcs."""
self.vmcs_validation.pop(vmcs, None)
def __str__(self):
return "VirtualMachine(Hypervisor=%#X, EPT=%#X)" % (
self.host_rip, self.ept)
class VmScan(plugin.PhysicalASMixin,
plugin.TypedProfileCommand, plugin.Command):
"""Scan the physical memory attempting to find hypervisors.
Once EPT values are found, you can use them to inspect virtual machines
with any of the rekall modules by using the --ept parameter and
specifying the guest virtual machine profile.
Supports the detection of the following virtualization techonlogies:
* Intel VT-X with EPT. Microarchitectures:
+ Westmere
+ Nehalem
+ Sandybridge
+ Ivy Bridge
+ Haswell
* Intel VT-X without EPT (unsupported page translation in rekall).
+ Penryn
For the specific processor models that support EPT, please check:
http://ark.intel.com/products/virtualizationtechnology.
"""
__name = "vmscan"
__args = [
dict(name="quick", type="Boolean",
help="Perform quick VM detection."),
dict(name="no_nested", type="Boolean",
help="Don't do nested VM detection."),
dict(name="offset", type="IntParser", default=0,
help="Offset in the physical image to start the scan."),
dict(name="show_all", default=False, type="Boolean",
help="Also show VMs that failed validation."),
dict(name="image_is_guest", default=False, type="Boolean",
help="The image is for a guest VM, not the host."),
dict(name="no_validation", default=False, type="Boolean",
help="[DEBUG SETTING] Disable validation of VMs.")
]
def __init__(self, *args, **kwargs):
super(VmScan, self).__init__(*args, **kwargs)
if self.plugin_args.no_validate:
self.plugin_args.show_all = True
def get_vms(self):
"""Finds virtual machines in physical memory and returns a list of them.
"""
all_vmcs = VMCSScanner(
address_space=self.physical_address_space,
session=self.session,
profile=obj.NoneObject).scan(
offset=self.plugin_args.offset,
end=self.physical_address_space.end())
host_vms = []
nested_vms = []
# == HOST VM validation
# Group the host VMCSs by (HOST_RIP, EPTP) and validate if requested.
# You could use (HOST_RIP, HOST_CR3), but VMWare 10.X uses a different
# HOST_CR3 per core. The EPTP, however, is the same and hardly any
# virtualization product would ever want to have different EPTP's per
# core because more page tables would have to be maintained for the
# same VM.
for host_rip, rip_vmcs_list in groupby(
sorted(all_vmcs, key=lambda x: long(x.HOST_RIP)),
lambda x: long(x.HOST_RIP)):
sorted_rip_vmcs_list = sorted(
rip_vmcs_list, key=lambda x: long(x.m("EPT_POINTER_FULL")))
for ept, rip_ept_vmcs_list in groupby(
sorted_rip_vmcs_list,
lambda x: long(x.m("EPT_POINTER_FULL"))):
vm = VirtualMachine(host_rip=host_rip, ept=ept,
session=self.session)
for vmcs in rip_ept_vmcs_list:
try:
# If a VMCS is nested we cannot do validation at this
# step unless the memory image is for a guest VM or the
# physical address_space is a VTxPagedMemory. The
# physical AS is a VTxPagedMemory when you specify the
# --ept parameter on the command line.
if vmcs.IS_NESTED:
if (self.plugin_args.image_is_guest or
self.physical_address_space.metadata(
"ept")):
vm.add_vmcs(
vmcs,
validate=not self.plugin_args.no_validate)
else:
vm.add_vmcs(vmcs, validate=False)
else:
vm.add_vmcs(
vmcs,
validate=not self.plugin_args.no_validate)
if vm.is_valid_vmcs(vmcs):
if self.plugin_args.quick:
break
except UnrelatedVmcsError:
# This may happen when we analyze live memory. When
# the HOST_RIP/EPT that we grouped with has changed
# between finding it and adding it to a vm, add_vmcs
# may raise an UnrelatedVmcsError.
# Not much we can do other than skipping this VMCS.
continue
# Discard empty VMs, which can happen if we skipped vmcss.
if not vm.vmcss:
continue
# We need to split nested and host VMs here. However, we
# cannot use the is_nested method of VirtualMachine, because the
# potentially nested VMs aren't technically nested yet
# (i.e: don't have a parent). So we resort to checking if
# all the VMCSs are of nested-type.
may_be_nested = all([v.IS_NESTED for v in vm.vmcss])
if may_be_nested and not vm.is_valid:
# Only add as nested VMs ones that haven't been validated
# yet. This covers the case there image_is_guest is True
# and they were validated as hosts.
nested_vms.append(vm)
else:
host_vms.append(vm)
if self.plugin_args.no_nested:
return host_vms
# == NESTED VM validation
# Only 1 level of nesting supported at the moment.
#
# TODO: Detect turtles-type VMCSs and relate them to the proper VM.
# https://www.usenix.org/event/osdi10/tech/full_papers/Ben-Yehuda.pdf
#
# These should show up as another valid VM.
if not self.plugin_args.no_validate:
candidate_hosts = [vm for vm in host_vms if vm.is_valid]
else:
candidate_hosts = []
# This step validates nested VMs. We try all candidate nested vms
# against all candidate hosts.
for candidate_host_vm in candidate_hosts:
candidate_host_vm.add_nested_vms(
nested_vms, validate_all=not self.plugin_args.quick)
# Add all remaining VMs that we weren't able to guess the hierarchy of
# to the output vm list.
host_vms.extend(nested_vms)
return host_vms
def render(self, renderer=None):
renderer.table_header([
dict(name="Description", type="TreeNode", max_depth=5, child=dict(
type="VirtualizationNode", style="light",
quick=self.plugin_args.quick)),
("Type", "type", ">20s"),
("Valid", "valid", ">8s"),
("EPT", "ept", "s")
])
virtual_machines = self.get_vms()
# At this point the hierarchy has been discovered.
for vm in virtual_machines:
# Skip invalid VMs.
if not self.plugin_args.show_all and not vm.is_valid:
continue
self.render_vm(renderer, vm, indent_level=0)
if self.plugin_args.verbosity > 2:
for vm in virtual_machines:
for vmcs in vm.vmcss:
if (not self.plugin_args.show_all and
not vm.is_valid_vmcs(vmcs)):
continue
renderer.section("VMCS @ %#x" % vmcs.obj_offset)
renderer.table_header([("Details", "details", "s")])
self.session.plugins.p(vmcs).render(renderer)
for nested_vm in vm.virtual_machines:
for vmcs in nested_vm.vmcss:
if (not self.plugin_args.show_all and
not vm.is_valid_vmcs(vmcs)):
continue
renderer.section("VMCS @ %#x" % vmcs.obj_offset)
renderer.table_header([("Details", "details", "s")])
self.session.plugins.p(vmcs).render(renderer)
def render_vm(self, renderer, vm, indent_level=0):
vm_ept = ','.join(["0x%X" % e for e in vm.ept_list])
renderer.table_row(vm, 'VM', vm.is_valid, vm_ept, depth=indent_level)
if vm.is_valid and isinstance(
self.session, session_module.InteractiveSession):
self.session.session_list.append(vm.GetSession())
if self.plugin_args.verbosity > 1:
for vmcs in sorted(vm.vmcss,
key=lambda x: x.m("VPID")):
if not self.plugin_args.show_all and not vm.is_valid_vmcs(vmcs):
continue
valid = vm.is_valid_vmcs(vmcs)
renderer.table_row(
vmcs,
vmcs.obj_name, valid, '', depth=indent_level+1)
for nested_vm in vm.virtual_machines:
if not self.plugin_args.show_all and not nested_vm.is_valid:
continue
self.render_vm(renderer, nested_vm, indent_level=indent_level+1)
|