/usr/share/pyshared/impacket/smb3.py is in python-impacket 0.9.10-1.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 | # Copyright (c) 2003-2012 CORE Security Technologies)
#
# This software is provided under under a slightly modified version
# of the Apache Software License. See the accompanying LICENSE file
# for more information.
#
# $Id: smb3.py 741 2013-04-25 22:07:46Z bethus@gmail.com $
#
# Author: Alberto Solino (beto@coresecurity.com)
#
# Description:
# [MS-SMB2] Protocol Implementation (SMB2 and SMB3)
# As you might see in the code, it's implemented strictly following
# the structures defined in the protocol specification. This may
# not be the most efficient way (e.g. self._Connection is the
# same to self._Session in the context of this library ) but
# it certainly helps following the document way easier.
#
# ToDo:
# [X] Implement SMB2_CHANGE_NOTIFY
# [X] Implement SMB2_QUERY_INFO
# [X] Implement SMB2_SET_INFO
# [ ] Implement SMB2_OPLOCK_BREAK
# [X] Implement SMB3 signing
# [ ] Implement SMB3 encryption
# [ ] Add more backward compatible commands from the smb.py code
# [ ] Fix up all the 'ToDo' comments inside the code
#
import socket, string, ntpath
from impacket import nmb, smb3structs, nt_errors, spnego, ntlm, uuid, crypto
from impacket.smb3structs import *
from impacket.nt_errors import *
from impacket.spnego import *
from binascii import a2b_hex
from contextlib import contextmanager
# For signing
import hashlib, hmac, copy
# Structs to be used
TREE_CONNECT = {
'ShareName' : '',
'TreeConnectId' : 0,
'Session' : 0,
'IsDfsShare' : False,
# If the client implements the SMB 3.0 dialect,
# the client MUST also implement the following
'IsCAShare' : False,
'EncryptData' : False,
'IsScaleoutShare' : False,
# Outside the protocol
'NumberOfUses' : 0,
}
FILE = {
'OpenTable' : [],
'LeaseKey' : '',
'LeaseState' : 0,
'LeaseEpoch' : 0,
}
OPEN = {
'FileID' : '',
'TreeConnect' : 0,
'Connection' : 0, # Not Used
'Oplocklevel' : 0,
'Durable' : False,
'FileName' : '',
'ResilientHandle' : False,
'LastDisconnectTime' : 0,
'ResilientTimeout' : 0,
'OperationBuckets' : [],
# If the client implements the SMB 3.0 dialect,
# the client MUST implement the following
'CreateGuid' : '',
'IsPersistent' : False,
'DesiredAccess' : '',
'ShareMode' : 0,
'CreateOption' : '',
'FileAttributes' : '',
'CreateDisposition' : '',
}
REQUEST = {
'CancelID' : '',
'Message' : '',
'Timestamp' : 0,
}
CHANNEL = {
'SigningKey' : '',
'Connection' : 0,
}
class SessionError(Exception):
def __init__( self, error = 0, packet=0):
Exception.__init__(self)
self.error = error
self.packet = packet
def get_error_code( self ):
return self.error
def get_error_packet( self ):
return self.packet
def __str__( self ):
return 'SMB SessionError: %s(%s)' % (ERROR_MESSAGES[self.error])
class SMB3:
def __init__(self, remote_name, remote_host, my_name = None, host_type = nmb.TYPE_SERVER, sess_port = 445, timeout=10, UDP = 0, preferredDialect = None, session = None):
# [MS-SMB2] Section 3
self.RequireMessageSigning = False #
self.ConnectionTable = {}
self.GlobalFileTable = {}
self.ClientGuid = '' #
# Only for SMB 3.0
self.EncryptionAlgorithmList = ['AES-CCM']
self.MaxDialect = []
self.RequireSecureNegotiate = False
# Per Transport Connection Data
self._Connection = {
# Indexed by SessionID
#'SessionTable' : {},
# Indexed by MessageID
'OutstandingRequests' : {},
'OutstandingResponses' : {}, #
'SequenceWindow' : 0, #
'GSSNegotiateToken' : '', #
'MaxTransactSize' : 0, #
'MaxReadSize' : 0, #
'MaxWriteSize' : 0, #
'ServerGuid' : '', #
'RequireSigning' : False, #
'ServerName' : '', #
# If the client implements the SMB 2.1 or SMB 3.0 dialects, it MUST
# also implement the following
'Dialect' : '', #
'SupportsFileLeasing' : False, #
'SupportsMultiCredit' : False, #
# If the client implements the SMB 3.0 dialect,
# it MUST also implement the following
'SupportsDirectoryLeasing' : False, #
'SupportsMultiChannel' : False, #
'SupportsPersistentHandles': False, #
'SupportsEncryption' : False, #
'ClientCapabilities' : 0,
'ServerCapabilities' : 0, #
'ClientSecurityMode' : 0, #
'ServerSecurityMode' : 0, #
# Outside the protocol
'ServerIP' : '', #
}
self._Session = {
'SessionID' : 0, #
'TreeConnectTable' : {}, #
'SessionKey' : '', #
'SigningRequired' : False, #
'Connection' : 0, #
'UserCredentials' : '', #
'OpenTable' : {}, #
# If the client implements the SMB 3.0 dialect,
# it MUST also implement the following
'ChannelList' : [],
'ChannelSequence' : 0,
'EncryptData' : False,
'EncryptionKey' : '',
'DecryptionKey' : '',
'SigningKey' : '',
'ApplicationKey' : '',
# Outside the protocol
'SessionFlags' : 0, #
'ServerName' : '', #
'ServerDomain' : '', #
'ServerOS' : '', #
'SigningActivated' : False, #
}
self.SMB_PACKET = SMB2Packet
self._timeout = timeout
self._Connection['ServerIP'] = remote_host
self._NetBIOSSession = None
if sess_port == 445 and remote_name == '*SMBSERVER':
self._Connection['ServerName'] = remote_host
else:
self._Connection['ServerName'] = remote_name
if session is None:
if not my_name:
my_name = socket.gethostname()
i = string.find(my_name, '.')
if i > -1:
my_name = my_name[:i]
if UDP:
self._NetBIOSSession = nmb.NetBIOSUDPSession(my_name, self._Connection['ServerName'], remote_host, host_type, sess_port, self._timeout)
else:
self._NetBIOSSession = nmb.NetBIOSTCPSession(my_name, self._Connection['ServerName'], remote_host, host_type, sess_port, self._timeout)
self.negotiateSession(preferredDialect)
else:
self._NetBIOSSession = session
# We should increase the SequenceWindow since a packet was already received.
self._Connection['SequenceWindow'] += 1
# Let's negotiate again using the same connection
self.negotiateSession(preferredDialect)
def printStatus(self):
print "CONNECTION"
for i in self._Connection.items():
print "%-40s : %s" % i
print
print "SESSION"
for i in self._Session.items():
print "%-40s : %s" % i
def getServerName(self):
return self._Session['ServerName']
def getServerIP(self):
return self._Connection['ServerIP']
def getServerDomain(self):
return self._Session['ServerDomain']
def getServerOS(self):
return self._Session['ServerOS']
def isGuestSession(self):
return self._Session['SessionFlags'] & SMB2_SESSION_FLAG_IS_GUEST
def setTimeout(self, timeout):
self._timeout = timeout
@contextmanager
def useTimeout(self, timeout):
prev_timeout = self.setTimeout(timeout)
try:
yield
finally:
self.setTimeout(prev_timeout)
def getDialect(self):
return self._Connection['Dialect']
def signSMB(self, packet):
packet['Signature'] = '\x00'*16
if self._Connection['Dialect'] == SMB2_DIALECT_21 or self._Connection['Dialect'] == SMB2_DIALECT_002:
if len(self._Session['SessionKey']) > 0:
signature = hmac.new(self._Session['SessionKey'], str(packet), hashlib.sha256).digest()
packet['Signature'] = signature[:16]
else:
if len(self._Session['SessionKey']) > 0:
p = str(packet)
signature = crypto.AES_CMAC(self._Session['SigningKey'], p, len(p))
packet['Signature'] = signature
def sendSMB(self, packet):
# The idea here is to receive multiple/single commands and create a compound request, and send it
# Should return the MessageID for later retrieval. Implement compounded related requests.
# If Connection.Dialect is equal to "3.000" and if Connection.SupportsMultiChannel or
# Connection.SupportsPersistentHandles is TRUE, the client MUST set ChannelSequence in the
# SMB2 header to Session.ChannelSequence
# Check this is not a CANCEL request. If so, don't consume sequece numbers
if packet['Command'] is not SMB2_CANCEL:
packet['MessageID'] = self._Connection['SequenceWindow']
self._Connection['SequenceWindow'] += 1
packet['SessionID'] = self._Session['SessionID']
# Default the credit charge to 1 unless set by the caller
if packet.fields.has_key('CreditCharge') is False:
packet['CreditCharge'] = 1
# Standard credit request after negotiating protocol
if self._Connection['SequenceWindow'] > 3:
packet['CreditRequestResponse'] = 127
if self._Session['SigningActivated'] is True and self._Connection['SequenceWindow'] > 3:
if packet['TreeID'] > 0 and self._Session['TreeConnectTable'].has_key(packet['TreeID']) is True:
if self._Session['TreeConnectTable'][packet['TreeID']]['EncryptData'] is False:
packet['Flags'] = SMB2_FLAGS_SIGNED
self.signSMB(packet)
elif packet['TreeID'] == 0:
packet['Flags'] = SMB2_FLAGS_SIGNED
self.signSMB(packet)
self._NetBIOSSession.send_packet(str(packet))
return packet['MessageID']
def recvSMB(self, packetID = None):
# First, verify we don't have the packet already
if self._Connection['OutstandingResponses'].has_key(packetID):
return self._Connection['OutstandingResponses'].pop(packetID)
data = self._NetBIOSSession.recv_packet(self._timeout)
# In all SMB dialects for a response this field is interpreted as the Status field.
# This field can be set to any value. For a list of valid status codes,
# see [MS-ERREF] section 2.3.
packet = SMB2Packet(data.get_trailer())
# Loop while we receive pending requests
if packet['Status'] == STATUS_PENDING:
status = STATUS_PENDING
while status == STATUS_PENDING:
data = self._NetBIOSSession.recv_packet(self._timeout)
packet = SMB2Packet(data.get_trailer())
status = packet['Status']
if packet['MessageID'] == packetID or packetID is None:
# if self._Session['SigningRequired'] is True:
# self.signSMB(packet)
# Let's update the sequenceWindow based on the CreditsCharged
self._Connection['SequenceWindow'] += (packet['CreditCharge'] - 1)
return packet
else:
self._Connection['OutstandingResponses'][packet['MessageID']] = packet
return self.recvSMB(packetID)
def negotiateSession(self, preferredDialect = None):
packet = self.SMB_PACKET()
packet['Command'] = SMB2_NEGOTIATE
negSession = SMB2Negotiate()
negSession['SecurityMode'] = SMB2_NEGOTIATE_SIGNING_ENABLED
if self.RequireMessageSigning is True:
negSession['SecurityMode'] |= SMB2_NEGOTIATE_SIGNING_REQUIRED
negSession['Capabilities'] = 0
negSession['ClientGuid'] = self.ClientGuid
if preferredDialect is not None:
negSession['Dialects'] = [preferredDialect]
else:
negSession['Dialects'] = [SMB2_DIALECT_002, SMB2_DIALECT_21, SMB2_DIALECT_30]
negSession['DialectCount'] = len(negSession['Dialects'])
packet['Data'] = negSession
# Storing this data for later use
self._Connection['ClientSecurityMode'] = negSession['SecurityMode']
self._Connection['Capabilities'] = negSession['Capabilities']
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
# ToDo this:
# If the DialectRevision in the SMB2 NEGOTIATE Response is 0x02FF, the client MUST issue a new
# SMB2 NEGOTIATE request as described in section 3.2.4.2.2.2 with the only exception
# that the client MUST allocate sequence number 1 from Connection.SequenceWindow, and MUST set
# MessageId field of the SMB2 header to 1. Otherwise, the client MUST proceed as follows.
negResp = SMB2Negotiate_Response(ans['Data'])
self._Connection['MaxTransactSize'] = negResp['MaxTransactSize']
self._Connection['MaxReadSize'] = negResp['MaxReadSize']
self._Connection['MaxWriteSize'] = negResp['MaxWriteSize']
self._Connection['ServerGuid'] = negResp['ServerGuid']
self._Connection['GSSNegotiateToken'] = negResp['Buffer']
self._Connection['Dialect'] = negResp['DialectRevision']
if (negResp['SecurityMode'] & SMB2_NEGOTIATE_SIGNING_REQUIRED) == SMB2_NEGOTIATE_SIGNING_REQUIRED:
self._Connection['RequireSigning'] = True
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_LEASING) == SMB2_GLOBAL_CAP_LEASING:
self._Connection['SupportsFileLeasing'] = True
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_LARGE_MTU) == SMB2_GLOBAL_CAP_LARGE_MTU:
self._Connection['SupportsMultiCredit'] = True
if self._Connection['Dialect'] == SMB2_DIALECT_30:
# Switching to the right packet format
self.SMB_PACKET = SMB3Packet
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) == SMB2_GLOBAL_CAP_DIRECTORY_LEASING:
self._Connection['SupportsDirectoryLeasing'] = True
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_MULTI_CHANNEL) == SMB2_GLOBAL_CAP_MULTI_CHANNEL:
self._Connection['SupportsMultiChannel'] = True
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_PERSISTENT_HANDLES) == SMB2_GLOBAL_CAP_PERSISTENT_HANDLES:
self._Connection['SupportsPersistentHandles'] = True
if (negResp['Capabilities'] & SMB2_GLOBAL_CAP_ENCRYPTION) == SMB2_GLOBAL_CAP_ENCRYPTION:
self._Connection['SupportsEncryption'] = True
self._Connection['ServerCapabilities'] = negResp['Capabilities']
self._Connection['ServerSecurityMode'] = negResp['SecurityMode']
def login(self, user, password, domain = '', lmhash = '', nthash = ''):
# If we have hashes, normalize them
if ( lmhash != '' or nthash != ''):
if len(lmhash) % 2: lmhash = '0%s' % lmhash
if len(nthash) % 2: nthash = '0%s' % nthash
try: # just in case they were converted already
lmhash = a2b_hex(lmhash)
nthash = a2b_hex(nthash)
except:
pass
sessionSetup = SMB2SessionSetup()
if self.RequireMessageSigning is True:
sessionSetup['SecurityMode'] = SMB2_NEGOTIATE_SIGNING_REQUIRED
else:
sessionSetup['SecurityMode'] = SMB2_NEGOTIATE_SIGNING_ENABLED
sessionSetup['Flags'] = 0
#sessionSetup['Capabilities'] = SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_DFS
# Let's build a NegTokenInit with the NTLMSSP
# TODO: In the future we should be able to choose different providers
blob = SPNEGO_NegTokenInit()
# NTLMSSP
blob['MechTypes'] = [TypesMech['NTLMSSP - Microsoft NTLM Security Support Provider']]
auth = ntlm.getNTLMSSPType1('',domain, self._Connection['RequireSigning'])
blob['MechToken'] = str(auth)
sessionSetup['SecurityBufferLength'] = len(blob)
sessionSetup['Buffer'] = blob.getData()
# ToDo:
# If this authentication is for establishing an alternative channel for an existing Session, as specified
# in section 3.2.4.1.7, the client MUST also set the following values:
# The SessionId field in the SMB2 header MUST be set to the Session.SessionId for the new
# channel being established.
# The SMB2_SESSION_FLAG_BINDING bit MUST be set in the Flags field.
# The PreviousSessionId field MUST be set to zero.
packet = self.SMB_PACKET()
packet['Command'] = SMB2_SESSION_SETUP
packet['Data'] = sessionSetup
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_MORE_PROCESSING_REQUIRED):
self._Session['SessionID'] = ans['SessionID']
self._Session['SigningRequired'] = self._Connection['RequireSigning']
self._Session['UserCredentials'] = (user, password, domain, lmhash, nthash)
self._Session['Connection'] = self._NetBIOSSession.get_socket()
sessionSetupResponse = SMB2SessionSetup_Response(ans['Data'])
respToken = SPNEGO_NegTokenResp(sessionSetupResponse['Buffer'])
# Let's parse some data and keep it to ourselves in case it is asked
ntlmChallenge = ntlm.NTLMAuthChallenge(respToken['ResponseToken'])
if ntlmChallenge['TargetInfoFields_len'] > 0:
infoFields = ntlmChallenge['TargetInfoFields']
av_pairs = ntlm.AV_PAIRS(ntlmChallenge['TargetInfoFields'][:ntlmChallenge['TargetInfoFields_len']])
if av_pairs[ntlm.NTLMSSP_AV_HOSTNAME] is not None:
try:
self._Session['ServerName'] = av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1].decode('utf-16le')
except:
# For some reason, we couldn't decode Unicode here.. silently discard the operation
pass
if av_pairs[ntlm.NTLMSSP_AV_DOMAINNAME] is not None:
try:
if self._Session['ServerName'] != av_pairs[ntlm.NTLMSSP_AV_DOMAINNAME][1].decode('utf-16le'):
self._Session['ServerDomain'] = av_pairs[ntlm.NTLMSSP_AV_DOMAINNAME][1].decode('utf-16le')
except:
# For some reason, we couldn't decode Unicode here.. silently discard the operation
pass
# Parse Version to know the target Operating system name. Not provided elsewhere anymore
if ntlmChallenge.fields.has_key('Version'):
version = ntlmChallenge['Version']
self._Session['ServerOS'] = "Windows %d.%d Build %d" % (ord(version[0]), ord(version[1]), struct.unpack('<H',version[2:4])[0])
type3, exportedSessionKey = ntlm.getNTLMSSPType3(auth, respToken['ResponseToken'], user, password, domain, lmhash, nthash)
if exportedSessionKey is not None:
self._Session['SessionKey'] = exportedSessionKey
if self._Session['SigningRequired'] is True and self._Connection['Dialect'] == SMB2_DIALECT_30:
self._Session['SigningKey'] = crypto.KDF_CounterMode(exportedSessionKey, "SMB2AESCMAC\x00", "SmbSign\x00", 128)
respToken2 = SPNEGO_NegTokenResp()
respToken2['ResponseToken'] = str(type3)
# Reusing the previous structure
sessionSetup['SecurityBufferLength'] = len(respToken2)
sessionSetup['Buffer'] = respToken2.getData()
packetID = self.sendSMB(packet)
packet = self.recvSMB(packetID)
try:
if packet.isValidAnswer(STATUS_SUCCESS):
sessionSetupResponse = SMB2SessionSetup_Response(ans['Data'])
self._Session['SessionFlags'] = sessionSetupResponse['SessionFlags']
# Calculate the key derivations for dialect 3.0
if self._Session['SigningRequired'] is True:
self._Session['SigningActivated'] = True
if self._Connection['Dialect'] == SMB2_DIALECT_30:
self._Session['ApplicationKey'] = crypto.KDF_CounterMode(exportedSessionKey, "SMB2APP\x00", "SmbRpc\x00", 128)
if self._Session['EncryptData'] is True:
self._Session['EncryptionKey'] = crypto.KDF_CounterMode(exportedSessionKey, "SMB2AESCCM\x00", "ServerIn \x00", 128)
self._Session['DecryptionKey'] = crypto.KDF_CounterMode(exportedSessionKey, "SMB2AESCCM\x00", "ServerOut\x00", 128)
return True
except:
# We clean the stuff we used in case we want to authenticate again
# within the same connection
self._Session['UserCredentials'] = ''
self._Session['Connection'] = 0
self._Session['SessionID'] = 0
self._Session['SigningRequired'] = False
self._Session['SigningKey'] = ''
self._Session['SessionKey'] = ''
self._Session['SigningActivated'] = False
raise
def connectTree(self, share):
# Just in case this came with the full path (maybe an SMB1 client), let's just leave
# the sharename, we'll take care of the rest
#print self._Session['TreeConnectTable']
share = share.split('\\')[-1]
if self._Session['TreeConnectTable'].has_key(share):
# Already connected, no need to reconnect
treeEntry = self._Session['TreeConnectTable'][share]
treeEntry['NumberOfUses'] += 1
self._Session['TreeConnectTable'][treeEntry['TreeConnectId']]['NumberOfUses'] += 1
return treeEntry['TreeConnectId']
#path = share
path = '\\\\' + self._Connection['ServerName'] + '\\' +share
treeConnect = SMB2TreeConnect()
treeConnect['Buffer'] = path.encode('utf-16le')
treeConnect['PathLength'] = len(path)*2
packet = self.SMB_PACKET()
packet['Command'] = SMB2_TREE_CONNECT
packet['Data'] = treeConnect
packetID = self.sendSMB(packet)
packet = self.recvSMB(packetID)
if packet.isValidAnswer(STATUS_SUCCESS):
treeConnectResponse = SMB2TreeConnect_Response(packet['Data'])
treeEntry = copy.deepcopy(TREE_CONNECT)
treeEntry['ShareName'] = share
treeEntry['TreeConnectId'] = packet['TreeID']
treeEntry['Session'] = packet['SessionID']
treeEntry['NumberOfUses'] += 1
if (treeConnectResponse['Capabilities'] & SMB2_SHARE_CAP_DFS) == SMB2_SHARE_CAP_DFS:
treeEntry['IsDfsShare'] = True
if (treeConnectResponse['Capabilities'] & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) == SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY:
treeEntry['IsCAShare'] = True
if self._Connection['Dialect'] == SMB2_DIALECT_30:
if (self._Connection['SupportsEncryption'] is True) and ((treeConnectResponse['ShareFlags'] & SMB2_SHAREFLAG_ENCRYPT_DATA) == SMB2_SHAREFLAG_ENCRYPT_DATA):
treeEntry['EncryptData'] = True
# ToDo: This and what follows
# If Session.EncryptData is FALSE, the client MUST then generate an encryption key, a
# decryption key as specified in section 3.1.4.2, by providing the following inputs and store
# them in Session.EncryptionKey and Session.DecryptionKey:
if (treeConnectResponse['Capabilities'] & SMB2_SHARE_CAP_SCALEOUT) == SMB2_SHARE_CAP_SCALEOUT:
treeEntry['IsScaleoutShare'] = True
self._Session['TreeConnectTable'][packet['TreeID']] = treeEntry
self._Session['TreeConnectTable'][share] = treeEntry
return packet['TreeID']
def disconnectTree(self, treeId):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['TreeConnectTable'].has_key(treeId):
# More than 1 use? descrease it and return, if not, send the packet
if self._Session['TreeConnectTable'][treeId]['NumberOfUses'] > 1:
treeEntry = self._Session['TreeConnectTable'][treeId]
treeEntry['NumberOfUses'] -= 1
self._Session['TreeConnectTable'][treeEntry['ShareName']]['NumberOfUses'] -= 1
return True
packet = self.SMB_PACKET()
packet['Command'] = SMB2_TREE_DISCONNECT
packet['TreeID'] = treeId
treeDisconnect = SMB2TreeDisconnect()
packet['Data'] = treeDisconnect
packetID = self.sendSMB(packet)
packet = self.recvSMB(packetID)
if packet.isValidAnswer(STATUS_SUCCESS):
shareName = self._Session['TreeConnectTable'][treeId]['ShareName']
del(self._Session['TreeConnectTable'][shareName])
del(self._Session['TreeConnectTable'][treeId])
return True
def create(self, treeId, fileName, desiredAccess, shareMode, creationOptions, creationDisposition, fileAttributes, impersonationLevel = SMB2_IL_IMPERSONATION, securityFlags = 0, oplockLevel = SMB2_OPLOCK_LEVEL_NONE, createContexts = None):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
fileName = string.replace(fileName, '/', '\\')
if len(fileName) > 0:
fileName = ntpath.normpath(fileName)
if fileName[0] == '\\':
fileName = fileName[1:]
if self._Session['TreeConnectTable'][treeId]['IsDfsShare'] is True:
pathName = fileName
else:
pathName = '\\\\' + self._Connection['ServerName'] + '\\' + fileName
fileEntry = copy.deepcopy(FILE)
fileEntry['LeaseKey'] = uuid.generate()
fileEntry['LeaseState'] = SMB2_LEASE_NONE
self.GlobalFileTable[pathName] = fileEntry
if self._Connection['Dialect'] == SMB2_DIALECT_30 and self._Connection['SupportsDirectoryLeasing'] is True:
# Is this file NOT on the root directory?
if len(fileName.split('\\')) > 2:
parentDir = ntpath.dirname(pathName)
if self.GlobalFileTable.has_key(parentDir):
print "Don't know what to do now! :-o"
raise
else:
parentEntry = copy.deepcopy(FILE)
parentEntry['LeaseKey'] = uuid.generate()
parentEntry['LeaseState'] = SMB2_LEASE_NONE
self.GlobalFileTable[parentDir] = parentEntry
packet = self.SMB_PACKET()
packet['Command'] = SMB2_CREATE
packet['TreeID'] = treeId
if self._Session['TreeConnectTable'][treeId]['IsDfsShare'] is True:
packet['Flags'] = SMB2_FLAGS_DFS_OPERATIONS
smb2Create = SMB2Create()
smb2Create['SecurityFlags'] = 0
smb2Create['RequestedOplockLevel'] = oplockLevel
smb2Create['ImpersonationLevel'] = impersonationLevel
smb2Create['DesiredAccess'] = desiredAccess
smb2Create['FileAttributes'] = fileAttributes
smb2Create['ShareAccess'] = shareMode
smb2Create['CreateDisposition'] = creationDisposition
smb2Create['CreateOptions'] = creationOptions
smb2Create['NameLength'] = len(fileName)*2
if fileName != '':
smb2Create['Buffer'] = fileName.encode('utf-16le')
else:
smb2Create['Buffer'] = '\x00'
if createContexts is not None:
smb2Create['Buffer'] += createContexts
else:
smb2Create['CreateContextsOffset'] = 0
smb2Create['CreateContextsLength'] = 0
packet['Data'] = smb2Create
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
createResponse = SMB2Create_Response(ans['Data'])
openFile = copy.deepcopy(OPEN)
openFile['FileID'] = createResponse['FileID']
openFile['TreeConnect'] = treeId
openFile['Oplocklevel'] = oplockLevel
openFile['Durable'] = False
openFile['ResilientHandle'] = False
openFile['LastDisconnectTime'] = 0
openFile['FileName'] = pathName
# ToDo: Complete the OperationBuckets
if self._Connection['Dialect'] == SMB2_DIALECT_30:
openFile['DesiredAccess'] = oplockLevel
openFile['ShareMode'] = oplockLevel
openFile['CreateOptions'] = oplockLevel
openFile['FileAttributes'] = oplockLevel
openFile['CreateDisposition'] = oplockLevel
# ToDo: Process the contexts
self._Session['OpenTable'][str(createResponse['FileID'])] = openFile
# The client MUST generate a handle for the Open, and it MUST
# return success and the generated handle to the calling application.
# In our case, str(FileID)
return str(createResponse['FileID'])
def close(self, treeId, fileId):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_CLOSE
packet['TreeID'] = treeId
smbClose = SMB2Close()
smbClose['Flags'] = 0
smbClose['FileID'] = fileId
packet['Data'] = smbClose
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
del(self.GlobalFileTable[self._Session['OpenTable'][fileId]['FileName']])
del(self._Session['OpenTable'][fileId])
# ToDo Remove stuff from GlobalFileTable
return True
def read(self, treeId, fileId, offset = 0, bytesToRead = 0, waitAnswer = True):
# IMPORTANT NOTE: As you can see, this was coded as a recursive function
# Hence, you can exhaust the memory pretty easy ( large bytesToRead )
# This function should NOT be used for reading files directly, but another higher
# level function should be used that will break the read into smaller pieces
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_READ
packet['TreeID'] = treeId
if self._Connection['MaxReadSize'] < bytesToRead:
maxBytesToRead = self._Connection['MaxReadSize']
else:
maxBytesToRead = bytesToRead
if self._Connection['Dialect'] != SMB2_DIALECT_002 and self._Connection['SupportsMultiCredit'] is True:
packet['CreditCharge'] = ( 1 + (maxBytesToRead - 1) / 65536)
else:
maxBytesToRead = min(65536,bytesToRead)
smbRead = SMB2Read()
smbRead['Padding'] = 0x50
smbRead['FileID'] = fileId
smbRead['Length'] = maxBytesToRead
smbRead['Offset'] = offset
packet['Data'] = smbRead
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
readResponse = SMB2Read_Response(ans['Data'])
retData = readResponse['Buffer']
if readResponse['DataRemaining'] > 0:
retData += self.read(treeId, fileId, offset+len(retData), readResponse['DataRemaining'], waitAnswer)
return retData
def write(self, treeId, fileId, data, offset = 0, bytesToWrite = 0, waitAnswer = True):
# IMPORTANT NOTE: As you can see, this was coded as a recursive function
# Hence, you can exhaust the memory pretty easy ( large bytesToWrite )
# This function should NOT be used for writing directly to files, but another higher
# level function should be used that will break the writes into smaller pieces
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_WRITE
packet['TreeID'] = treeId
if self._Connection['MaxWriteSize'] < bytesToWrite:
maxBytesToWrite = self._Connection['MaxWriteSize']
else:
maxBytesToWrite = bytesToWrite
if self._Connection['Dialect'] != SMB2_DIALECT_002 and self._Connection['SupportsMultiCredit'] is True:
packet['CreditCharge'] = ( 1 + (maxBytesToWrite - 1) / 65536)
else:
maxBytesToWrite = min(65536,bytesToWrite)
smbWrite = SMB2Write()
smbWrite['FileID'] = fileId
smbWrite['Length'] = maxBytesToWrite
smbWrite['Offset'] = offset
smbWrite['WriteChannelInfoOffset'] = 0
smbWrite['Buffer'] = data[:maxBytesToWrite]
packet['Data'] = smbWrite
packetID = self.sendSMB(packet)
if waitAnswer == True:
ans = self.recvSMB(packetID)
else:
return maxBytesToWrite
if ans.isValidAnswer(STATUS_SUCCESS):
writeResponse = SMB2Write_Response(ans['Data'])
bytesWritten = writeResponse['Count']
if bytesWritten < bytesToWrite:
bytesWritten += self.write(treeId, fileId, data[bytesWritten:], offset+bytesWritten, bytesToWrite-bytesWritten, waitAnswer)
return bytesWritten
def queryDirectory(self, treeId, fileId, searchString = '*', resumeIndex = 0, informationClass = FILENAMES_INFORMATION, maxBufferSize = None, enumRestart = False, singleEntry = False):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_QUERY_DIRECTORY
packet['TreeID'] = treeId
queryDirectory = SMB2QueryDirectory()
queryDirectory['FileInformationClass'] = informationClass
if resumeIndex != 0 :
queryDirectory['Flags'] = SMB2_INDEX_SPECIFIED
queryDirectory['FileIndex'] = resumeIndex
queryDirectory['FileID'] = fileId
if maxBufferSize is None:
maxBufferSize = self._Connection['MaxReadSize']
queryDirectory['OutputBufferLength'] = maxBufferSize
queryDirectory['FileNameLength'] = len(searchString)*2
queryDirectory['Buffer'] = searchString.encode('utf-16le')
packet['Data'] = queryDirectory
if self._Connection['Dialect'] != SMB2_DIALECT_002 and self._Connection['SupportsMultiCredit'] is True:
packet['CreditCharge'] = ( 1 + (maxBufferSize - 1) / 65536)
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
queryDirectoryResponse = SMB2QueryDirectory_Response(ans['Data'])
return queryDirectoryResponse['Buffer']
def echo(self):
packet = self.SMB_PACKET()
packet['Command'] = SMB2_ECHO
smbEcho = SMB2Echo()
packet['Data'] = smbEcho
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
return True
def cancel(self, packetID):
packet = self.SMB_PACKET()
packet['Command'] = SMB2_CANCEL
packet['MessageID'] = packetID
smbCancel = SMB2Cancel()
packet['Data'] = smbCancel
packetID = self.sendSMB(packet)
def ioctl(self, treeId, fileId = None, ctlCode = -1, flags = 0, inputBlob = '', maxInputResponse = None, maxOutputResponse = None, waitAnswer = 1):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if fileId is None:
fileId = '\xff'*16
else:
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_IOCTL
packet['TreeID'] = treeId
smbIoctl = SMB2Ioctl()
smbIoctl['FileID'] = fileId
smbIoctl['CtlCode'] = ctlCode
smbIoctl['MaxInputResponse'] = maxInputResponse
smbIoctl['MaxOutputResponse'] = maxOutputResponse
smbIoctl['InputCount'] = len(inputBlob)
if len(inputBlob) == 0:
smbIoctl['InputOffset'] = 0
smbIoctl['Buffer'] = '\x00'
else:
smbIoctl['Buffer'] = inputBlob
smbIoctl['OutputOffset'] = 0
smbIoctl['MaxOutputResponse'] = maxOutputResponse
smbIoctl['Flags'] = flags
packet['Data'] = smbIoctl
packetID = self.sendSMB(packet)
if waitAnswer == 0:
return True
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
smbIoctlResponse = SMB2Ioctl_Response(ans['Data'])
return smbIoctlResponse['Buffer']
def flush(self,treeId, fileId):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_FLUSH
packet['TreeID'] = treeId
smbFlush = SMB2Flush()
smbFlush['FileID'] = fileId
packet['Data'] = smbFlush
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
smbFlushResponse = SMB2Flush_Response(ans['Data'])
return True
def lock(self, treeId, fileId, locks, lockSequence = 0):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_LOCK
packet['TreeID'] = treeId
smbLock = SMB2Lock()
smbLock['FileID'] = fileId
smbLock['LockCount'] = len(locks)
smbLock['LockSequence'] = lockSequence
smbLock['Locks'] = ''.join(str(x) for x in locks)
packet['Data'] = smbLock
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
smbFlushResponse = SMB2Lock_Response(ans['Data'])
return True
# ToDo:
# If Open.ResilientHandle is TRUE or Connection.SupportsMultiChannel is TRUE, the client MUST
# do the following:
# The client MUST scan through Open.OperationBuckets and find an element with its Free field
# set to TRUE. If no such element could be found, an implementation-specific error MUST be
# returned to the application.
# Let the zero-based array index of the element chosen above be referred to as BucketIndex, and
# let BucketNumber = BucketIndex +1.
# Set Open.OperationBuckets[BucketIndex].Free = FALSE
# Let the SequenceNumber of the element chosen above be referred to as BucketSequence.
# The LockSequence field of the SMB2 lock request MUST be set to (BucketNumber<< 4) +
# BucketSequence.
# Increment the SequenceNumber of the element chosen above using MOD 16 arithmetic.
def logoff(self):
packet = self.SMB_PACKET()
packet['Command'] = SMB2_LOGOFF
smbLogoff = SMB2Logoff()
packet['Data'] = smbLogoff
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
return True
def queryInfo(self, treeId, fileId, inputBlob = '', infoType = SMB2_0_INFO_FILE, fileInfoClass = SMB2_FILE_STANDARD_INFO, additionalInformation = 0, flags = 0 ):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_QUERY_INFO
packet['TreeID'] = treeId
queryInfo = SMB2QueryInfo()
queryInfo['FileID'] = fileId
queryInfo['InfoType'] = SMB2_0_INFO_FILE
queryInfo['FileInfoClass'] = fileInfoClass
queryInfo['OutputBufferLength'] = 65535
queryInfo['AdditionalInformation'] = additionalInformation
if len(inputBlob) == 0:
queryInfo['InputBufferOffset'] = 0
queryInfo['Buffer'] = '\x00'
else:
queryInfo['InputBufferLength'] = len(inputBlob)
queryInfo['Buffer'] = inputBlob
queryInfo['Flags'] = flags
packet['Data'] = queryInfo
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
queryResponse = SMB2QueryInfo_Response(ans['Data'])
return queryResponse['Buffer']
def setInfo(self, treeId, fileId, inputBlob = '', infoType = SMB2_0_INFO_FILE, fileInfoClass = SMB2_FILE_STANDARD_INFO, additionalInformation = 0 ):
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if self._Session['OpenTable'].has_key(fileId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
packet = self.SMB_PACKET()
packet['Command'] = SMB2_SET_INFO
packet['TreeID'] = treeId
setInfo = SMB2SetInfo()
setInfo['InfoType'] = SMB2_0_INFO_FILE
setInfo['FileInfoClass'] = fileInfoClass
setInfo['BufferLength'] = len(inputBlob)
setInfo['AdditionalInformation'] = additionalInformation
setInfo['FileID'] = fileId
setInfo['Buffer'] = inputBlob
packet['Data'] = setInfo
packetID = self.sendSMB(packet)
ans = self.recvSMB(packetID)
if ans.isValidAnswer(STATUS_SUCCESS):
return True
######################################################################
# Higher level functions
def rename(self, shareName, oldPath, newPath):
oldPath = string.replace(oldPath,'/', '\\')
oldPath = ntpath.normpath(oldPath)
if len(oldPath) > 0 and oldPath[0] == '\\':
oldPath = oldPath[1:]
newPath = string.replace(newPath,'/', '\\')
newPath = ntpath.normpath(newPath)
if len(newPath) > 0 and newPath[0] == '\\':
newPath = newPath[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
fileId = self.create(treeId, oldPath, MAXIMUM_ALLOWED ,FILE_SHARE_READ | FILE_SHARE_WRITE |FILE_SHARE_DELETE, 0x200020, FILE_OPEN, 0)
renameReq = FILE_RENAME_INFORMATION_TYPE_2()
renameReq['ReplaceIfExists'] = 1
renameReq['RootDirectory'] = '\x00'*8
renameReq['FileNameLength'] = len(newPath)*2
renameReq['FileName'] = newPath.encode('utf-16le')
self.setInfo(treeId, fileId, renameReq, infoType = SMB2_0_INFO_FILE, fileInfoClass = SMB2_FILE_RENAME_INFO)
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
return True
def writeFile(self, treeId, fileId, data, offset = 0):
finished = False
writeOffset = offset
while not finished:
if len(data) == 0:
break
writeData = data[:self._Connection['MaxWriteSize']]
data = data[self._Connection['MaxWriteSize']:]
written = self.write(treeId, fileId, writeData, writeOffset, len(writeData))
writeOffset += written
return writeOffset - offset
def listPath(self, shareName, path, password = None):
# ToDo: Handle situations where share is password protected
path = string.replace(path,'/', '\\')
path = ntpath.normpath(path)
if len(path) > 0 and path[0] == '\\':
path = path[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
# ToDo, we're assuming it's a directory, we should check what the file type is
fileId = self.create(treeId, ntpath.dirname(path), FILE_READ_ATTRIBUTES | FILE_READ_DATA ,FILE_SHARE_READ | FILE_SHARE_WRITE |FILE_SHARE_DELETE, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT, FILE_OPEN, 0)
res = ''
files = []
from impacket import smb
while True:
try:
res = self.queryDirectory( treeId, fileId, ntpath.basename(path), maxBufferSize = 65535 )
nextOffset = 1
while nextOffset != 0:
fileInfo = smb.SMBFindFileNamesInfo(smb.SMB.FLAGS2_UNICODE)
fileInfo.fromString(res)
files.append(smb.SharedFile(0,0,0,0,0,0,fileInfo['FileName'].decode('utf-16le'), fileInfo['FileName'].decode('utf-16le')))
nextOffset = fileInfo['NextEntryOffset']
res = res[nextOffset:]
except SessionError, e:
if (e.get_error_code()) != STATUS_NO_MORE_FILES:
raise
break
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
return files
def mkdir(self, shareName, pathName, password = None):
# ToDo: Handle situations where share is password protected
pathName = string.replace(pathName,'/', '\\')
pathName = ntpath.normpath(pathName)
if len(pathName) > 0 and pathName[0] == '\\':
pathName = pathName[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
fileId = self.create(treeId, pathName,GENERIC_ALL ,FILE_SHARE_READ | FILE_SHARE_WRITE |FILE_SHARE_DELETE, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT, FILE_CREATE, 0)
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
return True
def rmdir(self, shareName, pathName, password = None):
# ToDo: Handle situations where share is password protected
pathName = string.replace(pathName,'/', '\\')
pathName = ntpath.normpath(pathName)
if len(pathName) > 0 and pathName[0] == '\\':
pathName = pathName[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
fileId = self.create(treeId, pathName,GENERIC_ALL | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE |FILE_SHARE_DELETE, FILE_DIRECTORY_FILE | FILE_DELETE_ON_CLOSE, FILE_OPEN, 0)
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
return True
def remove(self, shareName, pathName, password = None):
# ToDo: Handle situations where share is password protected
pathName = string.replace(pathName,'/', '\\')
pathName = ntpath.normpath(pathName)
if len(pathName) > 0 and pathName[0] == '\\':
pathName = pathName[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
fileId = self.create(treeId, pathName,GENERIC_ALL | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE |FILE_SHARE_DELETE, FILE_NON_DIRECTORY_FILE | FILE_DELETE_ON_CLOSE, FILE_OPEN, 0)
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
return True
def retrieveFile(self, shareName, path, callback, mode = FILE_OPEN, offset = 0, password = None):
# ToDo: Handle situations where share is password protected
path = string.replace(path,'/', '\\')
path = ntpath.normpath(path)
if len(path) > 0 and path[0] == '\\':
path = path[1:]
treeId = self.connectTree(shareName)
fileId = None
from impacket import smb
try:
fileId = self.create(treeId, path, FILE_READ_DATA, FILE_SHARE_READ, FILE_NON_DIRECTORY_FILE, mode, 0 )
res = self.queryInfo(treeId, fileId)
fileInfo = smb.SMBQueryFileStandardInfo(res)
fileSize = fileInfo['EndOfFile']
if (fileSize-offset) < self._Connection['MaxReadSize']:
# Skip reading 0 bytes files.
if (fileSize-offset) > 0:
data = self.read(treeId, fileId, offset, fileSize-offset)
callback(data)
else:
written = 0
toBeRead = fileSize-offset
while written < (toBeRead):
data = self.read(treeId, fileId, offset, self._Connection['MaxReadSize'])
written += len(data)
offset += len(data)
callback(data)
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
def storeFile(self, shareName, path, callback, mode = FILE_OVERWRITE_IF, offset = 0, password = None):
# ToDo: Handle situations where share is password protected
path = string.replace(path,'/', '\\')
path = ntpath.normpath(path)
if len(path) > 0 and path[0] == '\\':
path = path[1:]
treeId = self.connectTree(shareName)
fileId = None
try:
fileId = self.create(treeId, path, FILE_WRITE_DATA, FILE_SHARE_WRITE, FILE_NON_DIRECTORY_FILE, mode, 0 )
finished = False
writeOffset = offset
while not finished:
data = callback(self._Connection['MaxWriteSize'])
if len(data) == 0:
break
written = self.write(treeId, fileId, data, writeOffset, len(data))
writeOffset += written
finally:
if fileId is not None:
self.close(treeId, fileId)
self.disconnectTree(treeId)
def waitNamedPipe(self, treeId, pipename, timeout = 5):
pipename = ntpath.basename(pipename)
if self._Session['TreeConnectTable'].has_key(treeId) is False:
raise SessionError(STATUS_INVALID_PARAMETER)
if len(pipename) > 0xffff:
raise SessionError(STATUS_INVALID_PARAMETER)
pipeWait = FSCTL_PIPE_WAIT_STRUCTURE()
pipeWait['Timeout'] = timeout*100000
pipeWait['NameLength'] = len(pipename)*2
pipeWait['TimeoutSpecified'] = 1
pipeWait['Name'] = pipename.encode('utf-16le')
return self.ioctl(treeId, None, FSCTL_PIPE_WAIT,flags=SMB2_0_IOCTL_IS_FSCTL, inputBlob=pipeWait, maxInputResponse = 0, maxOutputResponse=0)
######################################################################
# Backward compatibility functions and alias for SMB1 and DCE Transports
# NOTE: It is strongly recommended not to use these commands
# when implementing new client calls.
get_server_name = getServerName
get_server_domain = getServerDomain
get_remote_name = getServerName
get_remote_host = getServerIP
get_server_os = getServerOS
tree_connect_andx = connectTree
tree_connect = connectTree
connect_tree = connectTree
disconnect_tree = disconnectTree
set_timeout = setTimeout
use_timeout = useTimeout
stor_file = storeFile
retr_file = retrieveFile
list_path = listPath
def __del__(self):
if self._NetBIOSSession:
self._NetBIOSSession.close()
def doesSupportNTLMv2(self):
# Always true :P
return True
def is_login_required(self):
# Always true :P
return True
def nt_create_andx(self, treeId, fileName, smb_packet=None, cmd = None):
if len(fileName) > 0 and fileName[0] == '\\':
fileName = fileName[1:]
if cmd is not None:
from impacket import smb
ntCreate = smb.SMBCommand(data = str(cmd))
params = smb.SMBNtCreateAndX_Parameters(ntCreate['Parameters'])
return self.create(treeId, fileName, params['AccessMask'], params['ShareAccess'],
params['CreateOptions'], params['Disposition'], params['FileAttributes'],
params['Impersonation'], params['SecurityFlags'])
else:
return self.create(treeId, fileName,
FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA | FILE_READ_EA |
FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES | FILE_READ_ATTRIBUTES | READ_CONTROL,
FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_NON_DIRECTORY_FILE, FILE_OPEN, 0 )
def get_socket(self):
return self._NetBIOSSession.get_socket()
def write_andx(self,tid,fid,data, offset = 0, wait_answer=1, write_pipe_mode = False, smb_packet=None):
# ToDo: Handle the custom smb_packet situation
return self.write(tid, fid, data, offset, len(data))
def TransactNamedPipe(self, tid, fid, data, noAnswer = 0, waitAnswer = 1, offset = 0):
return self.ioctl(tid, fid, FSCTL_PIPE_TRANSCEIVE, SMB2_0_IOCTL_IS_FSCTL, data, maxOutputResponse = 65535, waitAnswer = noAnswer | waitAnswer)
def TransactNamedPipeRecv(self):
ans = self.recvSMB()
if ans.isValidAnswer(STATUS_SUCCESS):
smbIoctlResponse = SMB2Ioctl_Response(ans['Data'])
return smbIoctlResponse['Buffer']
def read_andx(self, tid, fid, offset=0, max_size = None, wait_answer=1, smb_packet=None):
# ToDo: Handle the custom smb_packet situation
if max_size is None:
max_size = self._Connection['MaxReadSize']
return self.read(tid, fid, offset, max_size, wait_answer)
def list_shared(self):
# In the context of SMB2/3, forget about the old LANMAN, throw NOT IMPLEMENTED
raise SessionError(STATUS_NOT_IMPLEMENTED)
def open_andx(self, tid, fileName, open_mode, desired_access):
# ToDo Return all the attributes of the file
if len(fileName) > 0 and fileName[0] == '\\':
fileName = fileName[1:]
fileId = self.create(tid,fileName,desired_access, open_mode, FILE_NON_DIRECTORY_FILE, open_mode, 0)
return fileId, 0, 0, 0, 0, 0, 0, 0, 0
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