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GeezerVison is showing github.com — PythonMemoryModule/pythonmemorymodule/windows/alpc.py at main · ASkyeye/PythonMemoryModule Expand file tree/ Copy pathalpc.pyMore file actions 541 lines (443 loc) · 23.8 KB / Copy pathalpc.pyFile metadata and controls541 lines (443 loc) · 23.8 KB 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 import sys import ctypes from collections import namedtuple import windows from windows import winproxy from windows import generated_def as gdef import windows.pycompat ## For 64b python # 0x1f: 0x80000000: ALPC_MESSAGE_SECURITY_ATTRIBUTE(0x80000000) : size=0x18? # 0x1e: 0x40000000: ALPC_MESSAGE_VIEW_ATTRIBUTE(0x40000000): size=0x20 # 0x1d: 0x20000000: ALPC_MESSAGE_CONTEXT_ATTRIBUTE(0x20000000): size=0x20 # 0x1c: 0x10000000: ALPC_MESSAGE_HANDLE_ATTRIBUTE(0x10000000): size=0x18 # 0x1b: 0x8000000: ALPC_MESSAGE_TOKEN_ATTRIBUTE(0x8000000): size=0x18 # 0x1a: 0x4000000: ALPC_MESSAGE_DIRECT_ATTRIBUTE(0x4000000) size=0x8 # 0x19: 0x2000000: ALPC_MESSAGE_WORK_ON_BEHALF_ATTRIBUTE(0x2000000) size=0x8 DEFAULT_MESSAGE_SIZE = 0x1000 class AlpcMessage(object): """Represent a full ALPC Message: a :class:`AlpcMessagePort` and a :class:`MessageAttribute`""" # PORT_MESSAGE + MessageAttribute def __init__(self, msg_or_size=DEFAULT_MESSAGE_SIZE, attributes=None): # Init the PORT_MESSAGE if isinstance(msg_or_size, windows.pycompat.int_types): self.port_message_buffer_size = msg_or_size self.port_message_raw_buffer = ctypes.c_buffer(msg_or_size) self.port_message = AlpcMessagePort.from_buffer(self.port_message_raw_buffer) self.port_message.set_datalen(0) elif isinstance(msg_or_size, AlpcMessagePort): self.port_message = msg_or_size self.port_message_raw_buffer = self.port_message.raw_buffer self.port_message_buffer_size = len(self.port_message_raw_buffer) else: raise NotImplementedError("Uneexpected type for <msg_or_size>: {0}".format(msg_or_size)) # Init the MessageAttributes if attributes is None: # self.attributes = MessageAttribute.with_all_attributes() self.attributes = MessageAttribute.with_all_attributes() ## Testing else: self.attributes = attributes # PORT_MESSAGE wrappers @property def type(self): """The type of the message (``PORT_MESSAGE.u2.s2.Type``)""" return self.port_message.u2.s2.Type def get_port_message_data(self): return self.port_message.data def set_port_message_data(self, data): self.port_message.data = data data = property(get_port_message_data, set_port_message_data) "The data of the message (located after the PORT_MESSAGE header)" # MessageAttributes wrappers ## Low level attributes access @property def security_attribute(self): """The :data:`~windows.generated_def.ALPC_MESSAGE_SECURITY_ATTRIBUTE` of the message :type: :class:`ALPC_SECURITY_ATTR` """ return self.attributes.get_attribute(gdef.ALPC_MESSAGE_SECURITY_ATTRIBUTE) @property def view_attribute(self): """The :data:`~windows.generated_def.ALPC_MESSAGE_VIEW_ATTRIBUTE` of the message: :type: :class:`ALPC_DATA_VIEW_ATTR` """ return self.attributes.get_attribute(gdef.ALPC_MESSAGE_VIEW_ATTRIBUTE) @property def context_attribute(self): """The :data:`~windows.generated_def.ALPC_MESSAGE_CONTEXT_ATTRIBUTE` of the message: :type: :class:`ALPC_CONTEXT_ATTR` """ return self.attributes.get_attribute(gdef.ALPC_MESSAGE_CONTEXT_ATTRIBUTE) @property def handle_attribute(self): """The :data:`~windows.generated_def.ALPC_MESSAGE_HANDLE_ATTRIBUTE` of the message: :type: :class:`ALPC_HANDLE_ATTR` """ return self.attributes.get_attribute(gdef.ALPC_MESSAGE_HANDLE_ATTRIBUTE) ## Low level validity check (Test) @property def view_is_valid(self): # Change the name ? """True if :data:`~windows.generated_def.ALPC_MESSAGE_VIEW_ATTRIBUTE` is a ValidAttributes""" return self.attributes.is_valid(gdef.ALPC_MESSAGE_VIEW_ATTRIBUTE) @property def security_is_valid(self): # Change the name ? """True if :data:`~windows.generated_def.ALPC_MESSAGE_SECURITY_ATTRIBUTE` is a ValidAttributes""" return self.attributes.is_valid(gdef.ALPC_MESSAGE_SECURITY_ATTRIBUTE) @property def handle_is_valid(self): # Change the name ? """True if :data:`~windows.generated_def.ALPC_MESSAGE_HANDLE_ATTRIBUTE` is a ValidAttributes""" return self.attributes.is_valid(gdef.ALPC_MESSAGE_HANDLE_ATTRIBUTE) @property def context_is_valid(self): # Change the name ? """True if :data:`~windows.generated_def.ALPC_MESSAGE_CONTEXT_ATTRIBUTE` is a ValidAttributes""" return self.attributes.is_valid(gdef.ALPC_MESSAGE_CONTEXT_ATTRIBUTE) @property def valid_attributes(self): """The list of valid attributes :type: [:class:`~windows.generated_def.Flag`] """ return self.attributes.valid_list @property def allocated_attributes(self): """The list of allocated attributes :type: [:class:`~windows.generated_def.Flag`] """ return self.attributes.allocated_list ## High level setup (Test) def setup_view(self, size, section_handle=0, flags=None): raise NotImplementedError(self.setup_view) class AlpcMessagePort(gdef.PORT_MESSAGE): """The effective ALPC Message composed of a ``PORT_MESSAGE`` structure followed by the data""" # Constructeur @classmethod def from_buffer(self, buffer): # A sort of super(AlpcMessagePort).from_buffer # But from_buffer is from the Metaclass of AlpcMessagePort so we use 'type(AlpcMessagePort)' # To access the standard version of from_buffer. self = type(AlpcMessagePort).from_buffer(AlpcMessagePort, buffer) self.buffer_size = len(buffer) self.raw_buffer = buffer self.header_size = ctypes.sizeof(self) self.max_datasize = self.buffer_size - self.header_size return self @classmethod def from_buffer_size(cls, buffer_size): buffer = ctypes.c_buffer(buffer_size) return cls.from_buffer(buffer) def read_data(self): return self.raw_buffer[ctypes.sizeof(self):ctypes.sizeof(self) + self.u1.s1.DataLength] def write_data(self, data): if len(data) > self.max_datasize: import pdb; pdb.set_trace() raise ValueError("Cannot write data of len <{0}> (raw_buffer size == <{1}>)".format(len(data), self.buffer_size)) self.raw_buffer[self.header_size: self.header_size + len(data)] = data self.set_datalen(len(data)) data = property(read_data, write_data) "The data of the message (located after the header)" def set_datalen(self, datalen): self.u1.s1.TotalLength = self.header_size + datalen self.u1.s1.DataLength = datalen def get_datalen(self): return self.u1.s1.DataLength datalen = property(get_datalen, set_datalen) """The length of the data""" KNOWN_ALPC_ATTRIBUTES = (gdef.ALPC_MESSAGE_SECURITY_ATTRIBUTE, gdef.ALPC_MESSAGE_VIEW_ATTRIBUTE, gdef.ALPC_MESSAGE_CONTEXT_ATTRIBUTE, gdef.ALPC_MESSAGE_HANDLE_ATTRIBUTE, gdef.ALPC_MESSAGE_TOKEN_ATTRIBUTE, gdef.ALPC_MESSAGE_DIRECT_ATTRIBUTE, gdef.ALPC_MESSAGE_WORK_ON_BEHALF_ATTRIBUTE) KNOWN_ALPC_ATTRIBUTES_MAPPING = gdef.FlagMapper(*KNOWN_ALPC_ATTRIBUTES) class MessageAttribute(gdef.ALPC_MESSAGE_ATTRIBUTES): """The attributes of an ALPC message""" ATTRIBUTE_BY_FLAG = [(gdef.ALPC_MESSAGE_SECURITY_ATTRIBUTE, gdef.ALPC_SECURITY_ATTR), (gdef.ALPC_MESSAGE_VIEW_ATTRIBUTE, gdef.ALPC_DATA_VIEW_ATTR), (gdef.ALPC_MESSAGE_CONTEXT_ATTRIBUTE, gdef.ALPC_CONTEXT_ATTR), (gdef.ALPC_MESSAGE_HANDLE_ATTRIBUTE, gdef.ALPC_HANDLE_ATTR), (gdef.ALPC_MESSAGE_TOKEN_ATTRIBUTE, gdef.ALPC_TOKEN_ATTR), (gdef.ALPC_MESSAGE_DIRECT_ATTRIBUTE, gdef.ALPC_DIRECT_ATTR), (gdef.ALPC_MESSAGE_WORK_ON_BEHALF_ATTRIBUTE, gdef.ALPC_WORK_ON_BEHALF_ATTR), ] @classmethod def with_attributes(cls, attributes): """Create a new :class:`MessageAttribute` with ``attributes`` allocated :returns: :class:`MessageAttribute` """ size = cls._get_required_buffer_size(attributes) buffer = ctypes.c_buffer(size) self = cls.from_buffer(buffer) self.raw_buffer = buffer res = gdef.DWORD() winproxy.AlpcInitializeMessageAttribute(attributes, self, len(self.raw_buffer), res) return self @classmethod def with_all_attributes(cls): """Create a new :class:`MessageAttribute` with the following attributes allocated: - :class:`ALPC_MESSAGE_SECURITY_ATTRIBUTE` - :class:`ALPC_MESSAGE_VIEW_ATTRIBUTE` - :class:`ALPC_MESSAGE_CONTEXT_ATTRIBUTE` - :class:`ALPC_MESSAGE_HANDLE_ATTRIBUTE` - :class:`ALPC_MESSAGE_TOKEN_ATTRIBUTE` - :class:`ALPC_MESSAGE_DIRECT_ATTRIBUTE` - :class:`ALPC_MESSAGE_WORK_ON_BEHALF_ATTRIBUTE` :returns: :class:`MessageAttribute` """ return cls.with_attributes(gdef.ALPC_MESSAGE_SECURITY_ATTRIBUTE | gdef.ALPC_MESSAGE_VIEW_ATTRIBUTE | gdef.ALPC_MESSAGE_CONTEXT_ATTRIBUTE | gdef.ALPC_MESSAGE_HANDLE_ATTRIBUTE | gdef.ALPC_MESSAGE_TOKEN_ATTRIBUTE | gdef.ALPC_MESSAGE_DIRECT_ATTRIBUTE | gdef.ALPC_MESSAGE_WORK_ON_BEHALF_ATTRIBUTE) @staticmethod def _get_required_buffer_size(flags): res = gdef.DWORD() try: windows.winproxy.AlpcInitializeMessageAttribute(flags, None, 0, res) except windows.generated_def.ntstatus.NtStatusException as e: # Buffer too small: osef return res.value return res.value def is_allocated(self, attribute): """Return ``True`` if ``attribute`` is allocated""" return bool(self.AllocatedAttributes & attribute) def is_valid(self, attribute): """Return ``True`` if ``attribute`` is valid""" return bool(self.ValidAttributes & attribute) def get_attribute(self, attribute): if not self.is_allocated(attribute): raise ValueError("Cannot get non-allocated attribute <{0}>".format(attribute)) offset = ctypes.sizeof(self) for sflag, struct in self.ATTRIBUTE_BY_FLAG: if sflag == attribute: # print("Attr {0:#x} was at offet {1:#x}".format(attribute, offset)) return struct.from_address(ctypes.addressof(self) + offset) elif self.is_allocated(sflag): offset += ctypes.sizeof(struct) raise ValueError("ALPC Attribute <{0}> not found :(".format(attribute)) def _extract_alpc_attributes_values(self, value): attrs = [] for mask in (1 << i for i in range(64)): if value & mask: attrs.append(mask) return [KNOWN_ALPC_ATTRIBUTES_MAPPING[x] for x in attrs] @property def valid_list(self): """The list of valid attributes :type: [:class:`~windows.generated_def.Flag`] """ return self._extract_alpc_attributes_values(self.ValidAttributes) @property def allocated_list(self): """The list of allocated attributes :type: [:class:`~windows.generated_def.Flag`] """ return self._extract_alpc_attributes_values(self.AllocatedAttributes) AlpcSection = namedtuple("AlpcSection", ["handle", "size"]) class AlpcTransportBase(object): def send_receive(self, alpc_message, receive_msg=None, flags=gdef.ALPC_MSGFLG_SYNC_REQUEST, timeout=None): """Send and receive a message with ``flags``. :param alpc_message: The message to send. If ``alpc_message`` is a :class:`str` it build an AlpcMessage with the message as data. :type alpc_message: AlpcMessage or str :param receive_msg: The message to send. If ``receive_msg`` is a ``None`` it create and return a simple :class:`AlpcMessage` :type receive_msg: AlpcMessage or None :param int flags: The flags for :func:`NtAlpcSendWaitReceivePort` """ if isinstance(alpc_message, windows.pycompat.anybuff): raw_alpc_message = alpc_message alpc_message = AlpcMessage(max(0x1000, len(alpc_message) + 0x200)) alpc_message.port_message.data = raw_alpc_message if receive_msg is None: receive_msg = AlpcMessage(DEFAULT_MESSAGE_SIZE) receive_size = gdef.SIZE_T(receive_msg.port_message_buffer_size) winproxy.NtAlpcSendWaitReceivePort(self.handle, flags, alpc_message.port_message, alpc_message.attributes, receive_msg.port_message, receive_size, receive_msg.attributes, timeout) return receive_msg def send(self, alpc_message, flags=0): """Send the ``alpc_message`` with ``flags`` :param alpc_message: The message to send. If ``alpc_message`` is a :class:`str` it build an AlpcMessage with the message as data. :type alpc_message: AlpcMessage or str :param int flags: The flags for :func:`NtAlpcSendWaitReceivePort` """ if isinstance(alpc_message, windows.pycompat.anybuff): raw_alpc_message = alpc_message alpc_message = AlpcMessage(max(0x1000, len(alpc_message) + 0x200)) alpc_message.port_message.data = raw_alpc_message winproxy.NtAlpcSendWaitReceivePort(self.handle, flags, alpc_message.port_message, alpc_message.attributes, None, None, None, None) def recv(self, receive_msg=None, flags=0): """Receive a message into ``alpc_message`` with ``flags``. :param receive_msg: The message to send. If ``receive_msg`` is a ``None`` it create and return a simple :class:`AlpcMessage` :type receive_msg: AlpcMessage or None :param int flags: The flags for :func:`NtAlpcSendWaitReceivePort` """ if receive_msg is None: receive_msg = AlpcMessage(DEFAULT_MESSAGE_SIZE) receive_size = gdef.SIZE_T(receive_msg.port_message_buffer_size) winproxy.NtAlpcSendWaitReceivePort(self.handle, flags, None, None, receive_msg.port_message, receive_size, receive_msg.attributes, None) return receive_msg def _close_port(self, port_handle): windows.winproxy.NtAlpcDisconnectPort(port_handle, 0) windows.winproxy.CloseHandle(port_handle) class AlpcClient(AlpcTransportBase): "An ALPC client able to connect to a port and send/receive messages" def __init__(self, port_name=None): """Init the :class:`AlpcClient` automatically connect to ``port_name`` using default values if given""" self.handle = None self.port_name = None #: The name of the ALPC port the client is connect to. if port_name is not None: x = self.connect_to_port(port_name, "") def _alpc_port_to_unicode_string(self, name): return gdef.UNICODE_STRING.from_string(name) def connect_to_port(self, port_name, connect_message=None, port_attr=None, port_attr_flags=0x10000, obj_attr=None, flags=gdef.ALPC_MSGFLG_SYNC_REQUEST, timeout=None): """Connect to the ALPC port ``port_name``. Most of the parameters have defauls value is ``None`` is passed. :param AlpcMessage connect_message: The message send with the connection request, if not ``None`` the function will return an :class:`AlpcMessage` :param ALPC_PORT_ATTRIBUTES port_attr: The port attributes, one with default value will be used if this parameter is ``None`` :param int port_attr_flags: ``ALPC_PORT_ATTRIBUTES.Flags`` used if ``port_attr`` is ``None`` (MUTUALY EXCLUSINVE WITH ``port_attr``) :param OBJECT_ATTRIBUTES obj_attr: The attributes of the port (can be None) :param int flags: The flags for :func:`NtAlpcConnectPort` :param int timeout: The timeout of the request """ # TODO raise on mutual exclusive parameter if self.handle is not None: raise ValueError("Client already connected") handle = gdef.HANDLE() port_name_unicode = self._alpc_port_to_unicode_string(port_name) if port_attr is None: port_attr = gdef.ALPC_PORT_ATTRIBUTES() port_attr.Flags = port_attr_flags # Flag qui fonctionne pour l'UAC port_attr.MaxMessageLength = DEFAULT_MESSAGE_SIZE port_attr.MemoryBandwidth = 0 port_attr.MaxPoolUsage = 0xffffffff port_attr.MaxSectionSize = 0xffffffff port_attr.MaxViewSize = 0xffffffff port_attr.MaxTotalSectionSize = 0xffffffff port_attr.DupObjectTypes = 0xffffffff port_attr.SecurityQos.Length = ctypes.sizeof(port_attr.SecurityQos) port_attr.SecurityQos.ImpersonationLevel = gdef.SecurityImpersonation port_attr.SecurityQos.ContextTrackingMode = 0 port_attr.SecurityQos.EffectiveOnly = 0 if connect_message is None: send_msg = None send_msg_attr = None buffersize = None elif isinstance(connect_message, windows.pycompat.anybuff): buffersize = gdef.DWORD(len(connect_message) + 0x1000) send_msg = AlpcMessagePort.from_buffer_size(buffersize.value) send_msg.data = connect_message send_msg_attr = MessageAttribute.with_all_attributes() elif isinstance(connect_message, AlpcMessage): send_msg = connect_message.port_message send_msg_attr = connect_message.attributes buffersize = gdef.DWORD(connect_message.port_message_buffer_size) else: raise ValueError("Don't know how to send <{0!r}> as connect message".format(connect_message)) receive_attr = MessageAttribute.with_all_attributes() winproxy.NtAlpcConnectPort(handle, port_name_unicode, obj_attr, port_attr, flags, None, send_msg, buffersize, send_msg_attr, receive_attr, timeout) # If send_msg is not None, it contains the ClientId.UniqueProcess : PID of the server :) self.handle = handle.value self.port_name = port_name return AlpcMessage(send_msg, receive_attr) if send_msg is not None else None def create_port_section(self, Flags, SectionHandle, SectionSize): AlpcSectionHandle = gdef.HANDLE() ActualSectionSize = gdef.SIZE_T() # RPCRT4 USE FLAGS 0x40000 ALPC_VIEWFLG_NOT_SECURE ? winproxy.NtAlpcCreatePortSection(self.handle, Flags, SectionHandle, SectionSize, AlpcSectionHandle, ActualSectionSize) return AlpcSection(AlpcSectionHandle.value, ActualSectionSize.value) def map_section(self, section_handle, size, flags=0): view_attributes = gdef.ALPC_DATA_VIEW_ATTR() view_attributes.Flags = 0 view_attributes.SectionHandle = section_handle view_attributes.ViewBase = 0 view_attributes.ViewSize = size r = winproxy.NtAlpcCreateSectionView(self.handle, flags, view_attributes) return view_attributes def disconnect(self): if self.handle: self._close_port(self.handle) def __del__(self): if sys.path is not None: self.disconnect() class AlpcServer(AlpcTransportBase): """An ALPC server able to create a port, accept connections and send/receive messages""" def __init__(self, port_name=None): self.port_name = None self.communication_port_list = [] self.handle = None if port_name is not None: self.create_port(port_name) def _alpc_port_to_unicode_string(self, name): return gdef.UNICODE_STRING.from_string(name) def create_port(self, port_name, msglen=None, port_attr_flags=0, obj_attr=None, port_attr=None): """Create the ALPC port ``port_name``. Most of the parameters have defauls value is ``None`` is passed. :param str port_name: The port's name to create. :param int msglen: ``ALPC_PORT_ATTRIBUTES.MaxMessageLength`` used if ``port_attr`` is ``None`` (MUTUALY EXCLUSINVE WITH ``port_attr``) :param int port_attr_flags: ``ALPC_PORT_ATTRIBUTES.Flags`` used if ``port_attr`` is ``None`` (MUTUALY EXCLUSINVE WITH ``port_attr``) :param OBJECT_ATTRIBUTES obj_attr: The attributes of the port, one with default value will be used if this parameter is ``None`` :param ALPC_PORT_ATTRIBUTES port_attr: The port attributes, one with default value will be used if this parameter is ``None`` """ # TODO raise on mutual exclusive parameter (port_attr + port_attr_flags | obj_attr + msglen) handle = gdef.HANDLE() raw_name = port_name if not raw_name.startswith("\\"): raw_name = "\\" + port_name port_name = self._alpc_port_to_unicode_string(raw_name) if msglen is None: msglen = DEFAULT_MESSAGE_SIZE if obj_attr is None: obj_attr = gdef.OBJECT_ATTRIBUTES() obj_attr.Length = ctypes.sizeof(obj_attr) obj_attr.RootDirectory = None obj_attr.ObjectName = ctypes.pointer(port_name) obj_attr.Attributes = 0 obj_attr.SecurityDescriptor = None obj_attr.SecurityQualityOfService = None if port_attr is None: port_attr = gdef.ALPC_PORT_ATTRIBUTES() port_attr.Flags = port_attr_flags # port_attr.Flags = 0x2080000 # port_attr.Flags = 0x90000 port_attr.MaxMessageLength = msglen port_attr.MemoryBandwidth = 0 port_attr.MaxPoolUsage = 0xffffffff port_attr.MaxSectionSize = 0xffffffff port_attr.MaxViewSize = 0xffffffff port_attr.MaxTotalSectionSize = 0xffffffff port_attr.DupObjectTypes = 0xffffffff # windows.utils.print_ctypes_struct(port_attr, " - PORT_ATTR", hexa=True) winproxy.NtAlpcCreatePort(handle, obj_attr, port_attr) self.port_name = raw_name self.handle = handle.value def accept_connection(self, msg, port_attr=None, port_context=None): """Accept the connection for a ``LPC_CONNECTION_REQUEST`` message. ``msg.MessageId`` must be the same as the connection requesting message. :param AlpcMessage msg: The response message. :param ALPC_PORT_ATTRIBUTES port_attr: The attributes of the port, one with default value will be used if this parameter is ``None`` :param PVOID port_context: A value that will be copied in ``ALPC_CONTEXT_ATTR.PortContext`` of every message on this connection. """ rhandle = gdef.HANDLE() if port_attr is None: port_attr = gdef.ALPC_PORT_ATTRIBUTES() port_attr.Flags = 0x80000 # port_attr.Flags = 0x80000 + 0x2000000 # port_attr.Flags = 0x2000000 port_attr.MaxMessageLength = DEFAULT_MESSAGE_SIZE port_attr.MemoryBandwidth = 0 port_attr.MaxPoolUsage = 0xffffffff port_attr.MaxSectionSize = 0xffffffff port_attr.MaxViewSize = 0xffffffff port_attr.MaxTotalSectionSize = 0xffffffff port_attr.DupObjectTypes = 0xffffffff # windows.utils.print_ctypes_struct(port_attr, " - CONN_PORT_ATTR", hexa=True) winproxy.NtAlpcAcceptConnectPort(rhandle, self.handle, 0, None, port_attr, port_context, msg.port_message, None, True) self.communication_port_list.append(rhandle.value) return msg def disconnect(self): if self.handle: self._close_port(self.handle) for com_port_handle in self.communication_port_list: self._close_port(com_port_handle) # TODO: add an API to close a communication port ? def __del__(self): if sys.path is not None: self.disconnect() |
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