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bettersmbserver.py
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# Copyright (c) 2003-2016 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.
#
# Author: Alberto Solino (@agsolino)
#
# TODO:
# [-] Functions should return NT error codes
# [-] Handling errors in all situations, right now it's just raising exceptions.
# [*] Standard authentication support
# [ ] Organize the connectionData stuff
# [*] Add capability to send a bad user ID if the user is not authenticated,
# right now you can ask for any command without actually being authenticated
# [ ] PATH TRAVERSALS EVERYWHERE.. BE WARNED!
# [ ] Check the credentials.. now we're just letting everybody to log in.
# [ ] Check error situation (now many places assume the right data is coming)
# [ ] Implement IPC to the main process so the connectionData is on a single place
# [ ] Hence.. implement locking
# estamos en la B
from __future__ import with_statement
import calendar
import socket
import time
import datetime
import struct
import ConfigParser
import SocketServer
import threading
import logging
import logging.config
import ntpath
import os
import fnmatch
import errno
import sys
import random
import shutil
import string
import hashlib
import hmac
from colorama import Fore, Back, Style
from binascii import unhexlify, hexlify, a2b_hex
# For signing
from impacket import smb, nmb, ntlm, uuid, LOG
from impacket import smb3structs as smb2
from impacket.spnego import SPNEGO_NegTokenInit, TypesMech, MechTypes, SPNEGO_NegTokenResp, ASN1_AID, ASN1_SUPPORTED_MECH
from impacket.nt_errors import STATUS_NO_MORE_FILES, STATUS_NETWORK_NAME_DELETED, STATUS_INVALID_PARAMETER, \
STATUS_FILE_CLOSED, STATUS_MORE_PROCESSING_REQUIRED, STATUS_OBJECT_PATH_NOT_FOUND, STATUS_DIRECTORY_NOT_EMPTY, \
STATUS_FILE_IS_A_DIRECTORY, STATUS_NOT_IMPLEMENTED, STATUS_INVALID_HANDLE, STATUS_OBJECT_NAME_COLLISION, \
STATUS_NO_SUCH_FILE, STATUS_CANCELLED, STATUS_OBJECT_NAME_NOT_FOUND, STATUS_SUCCESS, STATUS_ACCESS_DENIED, \
STATUS_NOT_SUPPORTED, STATUS_INVALID_DEVICE_REQUEST, STATUS_FS_DRIVER_REQUIRED, STATUS_INVALID_INFO_CLASS, \
STATUS_LOGON_FAILURE
# Setting LOG to current's module name
LOG = logging.getLogger(__name__)
# These ones not defined in nt_errors
STATUS_SMB_BAD_UID = 0x005B0002
STATUS_SMB_BAD_TID = 0x00050002
# Utility functions
# and general functions.
# There are some common functions that can be accessed from more than one SMB
# command (or either TRANSACTION). That's why I'm putting them here
# TODO: Return NT ERROR Codes
def computeNTLMv2(identity, lmhash, nthash, serverChallenge, authenticateMessage, ntlmChallenge, type1):
# Let's calculate the NTLMv2 Response
responseKeyNT = ntlm.NTOWFv2(identity, '', authenticateMessage['domain_name'].decode('utf-16le'), nthash)
responseKeyLM = ntlm.LMOWFv2(identity, '', authenticateMessage['domain_name'].decode('utf-16le'), lmhash)
ntProofStr = authenticateMessage['ntlm'][:16]
temp = authenticateMessage['ntlm'][16:]
ntProofStr2 = ntlm.hmac_md5(responseKeyNT, serverChallenge + temp)
lmChallengeResponse = authenticateMessage['lanman']
sessionBaseKey = ntlm.hmac_md5(responseKeyNT, ntProofStr)
responseFlags = type1['flags']
# Let's check the return flags
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY) == 0:
# No extended session security, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_128) == 0:
# No support for 128 key len, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_128
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_KEY_EXCH) == 0:
# No key exchange supported, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_KEY_EXCH
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_SEAL) == 0:
# No sign available, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_SEAL
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_SIGN) == 0:
# No sign available, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_SIGN
if (ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_ALWAYS_SIGN) == 0:
# No sign available, taking it out
responseFlags &= 0xffffffff ^ ntlm.NTLMSSP_NEGOTIATE_ALWAYS_SIGN
keyExchangeKey = ntlm.KXKEY(ntlmChallenge['flags'], sessionBaseKey, lmChallengeResponse,
ntlmChallenge['challenge'], '',
lmhash, nthash, True)
# If we set up key exchange, let's fill the right variables
if ntlmChallenge['flags'] & ntlm.NTLMSSP_NEGOTIATE_KEY_EXCH:
exportedSessionKey = authenticateMessage['session_key']
exportedSessionKey = ntlm.generateEncryptedSessionKey(keyExchangeKey, exportedSessionKey)
else:
encryptedRandomSessionKey = None
# [MS-NLMP] page 46
exportedSessionKey = keyExchangeKey
# Do they match?
if ntProofStr == ntProofStr2:
# Yes!, process login
return STATUS_SUCCESS, exportedSessionKey
else:
return STATUS_LOGON_FAILURE, exportedSessionKey
def outputToJohnFormat(challenge, username, domain, lmresponse, ntresponse):
# We don't want to add a possible failure here, since this is an
# extra bonus. We try, if it fails, returns nothing
ret_value = ''
try:
if len(ntresponse) > 24:
# Extended Security - NTLMv2
ret_value = {'hash_string':'%s::%s:%s:%s:%s' % (username.decode('utf-16le'), domain.decode('utf-16le'), hexlify(challenge), hexlify(ntresponse)[:32], hexlify(ntresponse)[32:]), 'hash_version':'ntlmv2'}
else:
# NTLMv1
ret_value = {'hash_string':'%s::%s:%s:%s:%s' % (username.decode('utf-16le'), domain.decode('utf-16le'), hexlify(lmresponse), hexlify(ntresponse), hexlify(challenge)), 'hash_version':'ntlm'}
except:
# Let's try w/o decoding Unicode
try:
if len(ntresponse) > 24:
# Extended Security - NTLMv2
ret_value = {'hash_string':'%s::%s:%s:%s:%s' % (username, domain, hexlify(challenge), hexlify(ntresponse)[:32], hexlify(ntresponse)[32:]), 'hash_version':'ntlmv2'}
else:
# NTLMv1
ret_value = {'hash_string':'%s::%s:%s:%s:%s' % (username, domain, hexlify(lmresponse), hexlify(ntresponse), hexlify(challenge)), 'hash_version':'ntlm'}
except Exception, e:
LOG.error("outputToJohnFormat: %s" % e)
pass
return ret_value
def writeJohnOutputToFile(hash_string, hash_version, file_name):
fn_data = os.path.splitext(file_name)
if hash_version == "ntlmv2":
output_filename = fn_data[0] + "_ntlmv2" + fn_data[1]
else:
output_filename = fn_data[0] + "_ntlm" + fn_data[1]
with open(output_filename,"a") as f:
f.write(hash_string)
f.write('\n')
def decodeSMBString( flags, text ):
if flags & smb.SMB.FLAGS2_UNICODE:
return text.decode('utf-16le')
else:
return text
def encodeSMBString( flags, text ):
if flags & smb.SMB.FLAGS2_UNICODE:
return (text).encode('utf-16le')
else:
return text
def getFileTime(t):
t *= 10000000
t += 116444736000000000
return t
def getUnixTime(t):
t -= 116444736000000000
t /= 10000000
return t
def getSMBDate(t):
# TODO: Fix this :P
d = datetime.date.fromtimestamp(t)
year = d.year - 1980
ret = (year << 8) + (d.month << 4) + d.day
return ret
def getSMBTime(t):
# TODO: Fix this :P
d = datetime.datetime.fromtimestamp(t)
return (d.hour << 8) + (d.minute << 4) + d.second
def getShares(connId, smbServer):
config = smbServer.getServerConfig()
sections = config.sections()
# Remove the global one
del(sections[sections.index('global')])
shares = {}
for i in sections:
shares[i] = dict(config.items(i))
return shares
def searchShare(connId, share, smbServer):
config = smbServer.getServerConfig()
if config.has_section(share):
return dict(config.items(share))
else:
return None
def openFile(path,fileName, accessMode, fileAttributes, openMode):
fileName = os.path.normpath(fileName.replace('\\','/'))
errorCode = 0
if len(fileName) > 0 and (fileName[0] == '/' or fileName[0] == '\\'):
# strip leading '/'
fileName = fileName[1:]
pathName = os.path.join(path,fileName)
mode = 0
# Check the Open Mode
if openMode & 0x10:
# If the file does not exist, create it.
mode = os.O_CREAT
else:
# If file does not exist, return an error
if os.path.exists(pathName) is not True:
errorCode = STATUS_NO_SUCH_FILE
return 0,mode, pathName, errorCode
if os.path.isdir(pathName) and (fileAttributes & smb.ATTR_DIRECTORY) == 0:
# Request to open a normal file and this is actually a directory
errorCode = STATUS_FILE_IS_A_DIRECTORY
return 0, mode, pathName, errorCode
# Check the Access Mode
if accessMode & 0x7 == 1:
mode |= os.O_WRONLY
elif accessMode & 0x7 == 2:
mode |= os.O_RDWR
else:
mode = os.O_RDONLY
try:
if sys.platform == 'win32':
mode |= os.O_BINARY
fid = os.open(pathName, mode)
except Exception, e:
LOG.error("openFile: %s,%s" % (pathName, mode) ,e)
fid = 0
errorCode = STATUS_ACCESS_DENIED
return fid, mode, pathName, errorCode
def queryFsInformation(path, filename, level=0):
if isinstance(filename,unicode):
encoding = 'utf-16le'
flags = smb.SMB.FLAGS2_UNICODE
else:
encoding = 'ascii'
flags = 0
fileName = os.path.normpath(filename.replace('\\','/'))
if len(fileName) > 0 and (fileName[0] == '/' or fileName[0] == '\\'):
# strip leading '/'
fileName = fileName[1:]
pathName = os.path.join(path,fileName)
fileSize = os.path.getsize(pathName)
(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime) = os.stat(pathName)
if level == smb.SMB_QUERY_FS_ATTRIBUTE_INFO or level == smb2.SMB2_FILESYSTEM_ATTRIBUTE_INFO:
data = smb.SMBQueryFsAttributeInfo()
data['FileSystemAttributes'] = smb.FILE_CASE_SENSITIVE_SEARCH | smb.FILE_CASE_PRESERVED_NAMES
data['MaxFilenNameLengthInBytes'] = 255
data['LengthOfFileSystemName'] = len('XTFS')*2
data['FileSystemName'] = 'XTFS'.encode('utf-16le')
return data.getData()
elif level == smb.SMB_INFO_VOLUME:
data = smb.SMBQueryFsInfoVolume( flags = flags )
data['VolumeLabel'] = 'SHARE'.encode(encoding)
return data.getData()
elif level == smb.SMB_QUERY_FS_VOLUME_INFO or level == smb2.SMB2_FILESYSTEM_VOLUME_INFO:
data = smb.SMBQueryFsVolumeInfo()
data['VolumeLabel'] = ''
data['VolumeCreationTime'] = getFileTime(ctime)
return data.getData()
elif level == smb.SMB_QUERY_FS_SIZE_INFO:
data = smb.SMBQueryFsSizeInfo()
return data.getData()
elif level == smb.FILE_FS_FULL_SIZE_INFORMATION:
data = smb.SMBFileFsFullSizeInformation()
return data.getData()
elif level == smb.FILE_FS_SIZE_INFORMATION:
data = smb.FileFsSizeInformation()
return data.getData()
else:
lastWriteTime = mtime
attribs = 0
if os.path.isdir(pathName):
attribs |= smb.SMB_FILE_ATTRIBUTE_DIRECTORY
if os.path.isfile(pathName):
attribs |= smb.SMB_FILE_ATTRIBUTE_NORMAL
fileAttributes = attribs
return fileSize, lastWriteTime, fileAttributes
def findFirst2(path, fileName, level, searchAttributes, isSMB2 = False):
# TODO: Depending on the level, this could be done much simpler
#print "FindFirs2 path:%s, filename:%s" % (path, fileName)
fileName = os.path.normpath(fileName.replace('\\','/'))
# Let's choose the right encoding depending on the request
if isinstance(fileName,unicode):
encoding = 'utf-16le'
flags = smb.SMB.FLAGS2_UNICODE
else:
encoding = 'ascii'
flags = 0
if len(fileName) > 0 and (fileName[0] == '/' or fileName[0] == '\\'):
# strip leading '/'
fileName = fileName[1:]
pathName = os.path.join(path,fileName)
files = []
if pathName.find('*') == -1 and pathName.find('?') == -1:
# No search patterns
pattern = ''
else:
pattern = os.path.basename(pathName)
dirName = os.path.dirname(pathName)
# Always add . and .. Not that important for Windows, but Samba whines if
# not present (for * search only)
if pattern == '*':
files.append(os.path.join(dirName,'.'))
files.append(os.path.join(dirName,'..'))
if pattern != '':
for file in os.listdir(dirName):
if fnmatch.fnmatch(file.lower(),pattern.lower()):
entry = os.path.join(dirName, file)
if os.path.isdir(entry):
if searchAttributes & smb.ATTR_DIRECTORY:
files.append(entry)
else:
files.append(entry)
else:
if os.path.exists(pathName):
files.append(pathName)
searchResult = []
searchCount = len(files)
errorCode = STATUS_SUCCESS
for i in files:
if level == smb.SMB_FIND_FILE_BOTH_DIRECTORY_INFO or level == smb2.SMB2_FILE_BOTH_DIRECTORY_INFO:
item = smb.SMBFindFileBothDirectoryInfo( flags = flags )
elif level == smb.SMB_FIND_FILE_DIRECTORY_INFO or level == smb2.SMB2_FILE_DIRECTORY_INFO:
item = smb.SMBFindFileDirectoryInfo( flags = flags )
elif level == smb.SMB_FIND_FILE_FULL_DIRECTORY_INFO or level == smb2.SMB2_FULL_DIRECTORY_INFO:
item = smb.SMBFindFileFullDirectoryInfo( flags = flags )
elif level == smb.SMB_FIND_INFO_STANDARD:
item = smb.SMBFindInfoStandard( flags = flags )
elif level == smb.SMB_FIND_FILE_ID_FULL_DIRECTORY_INFO or level == smb2.SMB2_FILE_ID_FULL_DIRECTORY_INFO:
item = smb.SMBFindFileIdFullDirectoryInfo( flags = flags )
elif level == smb.SMB_FIND_FILE_ID_BOTH_DIRECTORY_INFO or level == smb2.SMB2_FILE_ID_BOTH_DIRECTORY_INFO:
item = smb.SMBFindFileIdBothDirectoryInfo( flags = flags )
elif level == smb.SMB_FIND_FILE_NAMES_INFO or level == smb2.SMB2_FILE_NAMES_INFO:
item = smb.SMBFindFileNamesInfo( flags = flags )
else:
LOG.error("Wrong level %d!" % level)
return searchResult, searchCount, STATUS_NOT_SUPPORTED
(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime) = os.stat(i)
if os.path.isdir(i):
item['ExtFileAttributes'] = smb.ATTR_DIRECTORY
else:
item['ExtFileAttributes'] = smb.ATTR_NORMAL | smb.ATTR_ARCHIVE
item['FileName'] = os.path.basename(i).encode(encoding)
if level == smb.SMB_FIND_FILE_BOTH_DIRECTORY_INFO or level == smb.SMB_FIND_FILE_ID_BOTH_DIRECTORY_INFO or level == smb2.SMB2_FILE_ID_BOTH_DIRECTORY_INFO or level == smb2.SMB2_FILE_BOTH_DIRECTORY_INFO:
item['EaSize'] = 0
item['EndOfFile'] = size
item['AllocationSize'] = size
item['CreationTime'] = getFileTime(ctime)
item['LastAccessTime'] = getFileTime(atime)
item['LastWriteTime'] = getFileTime(mtime)
item['LastChangeTime'] = getFileTime(mtime)
item['ShortName'] = '\x00'*24
item['FileName'] = os.path.basename(i).encode(encoding)
padLen = (8-(len(item) % 8)) % 8
item['NextEntryOffset'] = len(item) + padLen
elif level == smb.SMB_FIND_FILE_DIRECTORY_INFO:
item['EndOfFile'] = size
item['AllocationSize'] = size
item['CreationTime'] = getFileTime(ctime)
item['LastAccessTime'] = getFileTime(atime)
item['LastWriteTime'] = getFileTime(mtime)
item['LastChangeTime'] = getFileTime(mtime)
item['FileName'] = os.path.basename(i).encode(encoding)
padLen = (8-(len(item) % 8)) % 8
item['NextEntryOffset'] = len(item) + padLen
elif level == smb.SMB_FIND_FILE_FULL_DIRECTORY_INFO or level == smb.SMB_FIND_FILE_ID_FULL_DIRECTORY_INFO or level == smb2.SMB2_FULL_DIRECTORY_INFO:
item['EaSize'] = 0
item['EndOfFile'] = size
item['AllocationSize'] = size
item['CreationTime'] = getFileTime(ctime)
item['LastAccessTime'] = getFileTime(atime)
item['LastWriteTime'] = getFileTime(mtime)
item['LastChangeTime'] = getFileTime(mtime)
padLen = (8-(len(item) % 8)) % 8
item['NextEntryOffset'] = len(item) + padLen
elif level == smb.SMB_FIND_INFO_STANDARD:
item['EaSize'] = size
item['CreationDate'] = getSMBDate(ctime)
item['CreationTime'] = getSMBTime(ctime)
item['LastAccessDate'] = getSMBDate(atime)
item['LastAccessTime'] = getSMBTime(atime)
item['LastWriteDate'] = getSMBDate(mtime)
item['LastWriteTime'] = getSMBTime(mtime)
searchResult.append(item)
# No more files
if (level >= smb.SMB_FIND_FILE_DIRECTORY_INFO or isSMB2 == True) and searchCount > 0:
searchResult[-1]['NextEntryOffset'] = 0
return searchResult, searchCount, errorCode
def queryFileInformation(path, filename, level):
#print "queryFileInfo path: %s, filename: %s, level:0x%x" % (path,filename,level)
return queryPathInformation(path,filename, level)
def queryPathInformation(path, filename, level):
# TODO: Depending on the level, this could be done much simpler
#print "queryPathInfo path: %s, filename: %s, level:0x%x" % (path,filename,level)
try:
errorCode = 0
fileName = os.path.normpath(filename.replace('\\','/'))
if len(fileName) > 0 and (fileName[0] == '/' or fileName[0] == '\\') and path != '':
# strip leading '/'
fileName = fileName[1:]
pathName = os.path.join(path,fileName)
if os.path.exists(pathName):
(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime) = os.stat(pathName)
if level == smb.SMB_QUERY_FILE_BASIC_INFO:
infoRecord = smb.SMBQueryFileBasicInfo()
infoRecord['CreationTime'] = getFileTime(ctime)
infoRecord['LastAccessTime'] = getFileTime(atime)
infoRecord['LastWriteTime'] = getFileTime(mtime)
infoRecord['LastChangeTime'] = getFileTime(mtime)
if os.path.isdir(pathName):
infoRecord['ExtFileAttributes'] = smb.ATTR_DIRECTORY
else:
infoRecord['ExtFileAttributes'] = smb.ATTR_NORMAL | smb.ATTR_ARCHIVE
elif level == smb.SMB_QUERY_FILE_STANDARD_INFO:
infoRecord = smb.SMBQueryFileStandardInfo()
infoRecord['AllocationSize'] = size
infoRecord['EndOfFile'] = size
if os.path.isdir(pathName):
infoRecord['Directory'] = 1
else:
infoRecord['Directory'] = 0
elif level == smb.SMB_QUERY_FILE_ALL_INFO or level == smb2.SMB2_FILE_ALL_INFO:
infoRecord = smb.SMBQueryFileAllInfo()
infoRecord['CreationTime'] = getFileTime(ctime)
infoRecord['LastAccessTime'] = getFileTime(atime)
infoRecord['LastWriteTime'] = getFileTime(mtime)
infoRecord['LastChangeTime'] = getFileTime(mtime)
if os.path.isdir(pathName):
infoRecord['ExtFileAttributes'] = smb.ATTR_DIRECTORY
else:
infoRecord['ExtFileAttributes'] = smb.ATTR_NORMAL | smb.ATTR_ARCHIVE
infoRecord['AllocationSize'] = size
infoRecord['EndOfFile'] = size
if os.path.isdir(pathName):
infoRecord['Directory'] = 1
else:
infoRecord['Directory'] = 0
infoRecord['FileName'] = filename.encode('utf-16le')
elif level == smb2.SMB2_FILE_NETWORK_OPEN_INFO:
infoRecord = smb.SMBFileNetworkOpenInfo()
infoRecord['CreationTime'] = getFileTime(ctime)
infoRecord['LastAccessTime'] = getFileTime(atime)
infoRecord['LastWriteTime'] = getFileTime(mtime)
infoRecord['ChangeTime'] = getFileTime(mtime)
infoRecord['AllocationSize'] = size
infoRecord['EndOfFile'] = size
if os.path.isdir(pathName):
infoRecord['FileAttributes'] = smb.ATTR_DIRECTORY
else:
infoRecord['FileAttributes'] = smb.ATTR_NORMAL | smb.ATTR_ARCHIVE
elif level == smb.SMB_QUERY_FILE_EA_INFO or level == smb2.SMB2_FILE_EA_INFO:
infoRecord = smb.SMBQueryFileEaInfo()
elif level == smb2.SMB2_FILE_STREAM_INFO:
infoRecord = smb.SMBFileStreamInformation()
else:
LOG.error('Unknown level for query path info! 0x%x' % level)
# UNSUPPORTED
return None, STATUS_NOT_SUPPORTED
return infoRecord, errorCode
else:
# NOT FOUND
return None, STATUS_OBJECT_NAME_NOT_FOUND
except Exception, e:
LOG.error('queryPathInfo: %s' % e)
raise
def queryDiskInformation(path):
# TODO: Do something useful here :)
# For now we just return fake values
totalUnits = 65535
freeUnits = 65535
return totalUnits, freeUnits
# Here we implement the NT transaction handlers
class NTTRANSCommands:
def default(self, connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
pass
# Here we implement the NT transaction handlers
class TRANSCommands:
@staticmethod
def lanMan(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
# Minimal [MS-RAP] implementation, just to return the shares
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = STATUS_SUCCESS
if struct.unpack('<H',parameters[:2])[0] == 0:
# NetShareEnum Request
netShareEnum = smb.SMBNetShareEnum(parameters)
if netShareEnum['InfoLevel'] == 1:
shares = getShares(connId, smbServer)
respParameters = smb.SMBNetShareEnumResponse()
respParameters['EntriesReturned'] = len(shares)
respParameters['EntriesAvailable'] = len(shares)
tailData = ''
for i in shares:
# NetShareInfo1 len == 20
entry = smb.NetShareInfo1()
entry['NetworkName'] = i + '\x00'*(13-len(i))
entry['Type'] = int(shares[i]['share type'])
# (beto) If offset == 0 it crashes explorer.exe on windows 7
entry['RemarkOffsetLow'] = 20 * len(shares) + len(tailData)
respData += entry.getData()
if shares[i].has_key('comment'):
tailData += shares[i]['comment'] + '\x00'
else:
tailData += '\x00'
respData += tailData
else:
# We don't support other info levels
errorCode = STATUS_NOT_SUPPORTED
elif struct.unpack('<H',parameters[:2])[0] == 13:
# NetrServerGetInfo Request
respParameters = smb.SMBNetServerGetInfoResponse()
netServerInfo = smb.SMBNetServerInfo1()
netServerInfo['ServerName'] = smbServer.getServerName()
respData = str(netServerInfo)
respParameters['TotalBytesAvailable'] = len(respData)
elif struct.unpack('<H',parameters[:2])[0] == 1:
# NetrShareGetInfo Request
request = smb.SMBNetShareGetInfo(parameters)
respParameters = smb.SMBNetShareGetInfoResponse()
shares = getShares(connId, smbServer)
share = shares[request['ShareName'].upper()]
shareInfo = smb.NetShareInfo1()
shareInfo['NetworkName'] = request['ShareName'].upper() + '\x00'
shareInfo['Type'] = int(share['share type'])
respData = shareInfo.getData()
if share.has_key('comment'):
shareInfo['RemarkOffsetLow'] = len(respData)
respData += share['comment'] + '\x00'
respParameters['TotalBytesAvailable'] = len(respData)
else:
# We don't know how to handle anything else
errorCode = STATUS_NOT_SUPPORTED
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def transactNamedPipe(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = STATUS_SUCCESS
SMBCommand = smb.SMBCommand(recvPacket['Data'][0])
transParameters= smb.SMBTransaction_Parameters(SMBCommand['Parameters'])
# Extract the FID
fid = struct.unpack('<H', transParameters['Setup'][2:])[0]
if connData['OpenedFiles'].has_key(fid):
fileHandle = connData['OpenedFiles'][fid]['FileHandle']
if fileHandle != PIPE_FILE_DESCRIPTOR:
os.write(fileHandle,data)
respData = os.read(fileHandle,data)
else:
sock = connData['OpenedFiles'][fid]['Socket']
sock.send(data)
respData = sock.recv(maxDataCount)
else:
errorCode = STATUS_INVALID_HANDLE
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
# Here we implement the transaction2 handlers
class TRANS2Commands:
# All these commands return setup, parameters, data, errorCode
@staticmethod
def setPathInformation(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = STATUS_SUCCESS
setPathInfoParameters = smb.SMBSetPathInformation_Parameters(flags = recvPacket['Flags2'], data = parameters)
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
path = connData['ConnectedShares'][recvPacket['Tid']]['path']
fileName = decodeSMBString(recvPacket['Flags2'], setPathInfoParameters['FileName'])
fileName = os.path.normpath(fileName.replace('\\','/'))
if len(fileName) > 0 and (fileName[0] == '/' or fileName[0] == '\\') and path != '':
# strip leading '/'
fileName = fileName[1:]
pathName = os.path.join(path,fileName)
if os.path.exists(pathName):
informationLevel = setPathInfoParameters['InformationLevel']
if informationLevel == smb.SMB_SET_FILE_BASIC_INFO:
infoRecord = smb.SMBSetFileBasicInfo(data)
# Creation time won't be set, the other ones we play with.
atime = infoRecord['LastAccessTime']
if atime == 0:
atime = -1
else:
atime = getUnixTime(atime)
mtime = infoRecord['LastWriteTime']
if mtime == 0:
mtime = -1
else:
mtime = getUnixTime(mtime)
if mtime != -1 or atime != -1:
os.utime(pathName,(atime,mtime))
else:
smbServer.log('Unknown level for set path info! 0x%x' % setPathInfoParameters['InformationLevel'], logging.ERROR)
# UNSUPPORTED
errorCode = STATUS_NOT_SUPPORTED
else:
errorCode = STATUS_OBJECT_NAME_NOT_FOUND
if errorCode == STATUS_SUCCESS:
respParameters = smb.SMBSetPathInformationResponse_Parameters()
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def setFileInformation(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = STATUS_SUCCESS
setFileInfoParameters = smb.SMBSetFileInformation_Parameters(parameters)
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
if connData['OpenedFiles'].has_key(setFileInfoParameters['FID']):
fileName = connData['OpenedFiles'][setFileInfoParameters['FID']]['FileName']
informationLevel = setFileInfoParameters['InformationLevel']
if informationLevel == smb.SMB_SET_FILE_DISPOSITION_INFO:
infoRecord = smb.SMBSetFileDispositionInfo(parameters)
if infoRecord['DeletePending'] > 0:
# Mark this file for removal after closed
connData['OpenedFiles'][setFileInfoParameters['FID']]['DeleteOnClose'] = True
respParameters = smb.SMBSetFileInformationResponse_Parameters()
elif informationLevel == smb.SMB_SET_FILE_BASIC_INFO:
infoRecord = smb.SMBSetFileBasicInfo(data)
# Creation time won't be set, the other ones we play with.
atime = infoRecord['LastAccessTime']
if atime == 0:
atime = -1
else:
atime = getUnixTime(atime)
mtime = infoRecord['LastWriteTime']
if mtime == 0:
mtime = -1
else:
mtime = getUnixTime(mtime)
os.utime(fileName,(atime,mtime))
elif informationLevel == smb.SMB_SET_FILE_END_OF_FILE_INFO:
fileHandle = connData['OpenedFiles'][setFileInfoParameters['FID']]['FileHandle']
infoRecord = smb.SMBSetFileEndOfFileInfo(data)
if infoRecord['EndOfFile'] > 0:
os.lseek(fileHandle, infoRecord['EndOfFile']-1, 0)
os.write(fileHandle, '\x00')
else:
smbServer.log('Unknown level for set file info! 0x%x' % setFileInfoParameters['InformationLevel'], logging.ERROR)
# UNSUPPORTED
errorCode = STATUS_NOT_SUPPORTED
else:
errorCode = STATUS_NO_SUCH_FILE
if errorCode == STATUS_SUCCESS:
respParameters = smb.SMBSetFileInformationResponse_Parameters()
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def queryFileInformation(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
queryFileInfoParameters = smb.SMBQueryFileInformation_Parameters(parameters)
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
if connData['OpenedFiles'].has_key(queryFileInfoParameters['FID']):
fileName = connData['OpenedFiles'][queryFileInfoParameters['FID']]['FileName']
infoRecord, errorCode = queryFileInformation('', fileName, queryFileInfoParameters['InformationLevel'])
if infoRecord is not None:
respParameters = smb.SMBQueryFileInformationResponse_Parameters()
respData = infoRecord
else:
errorCode = STATUS_INVALID_HANDLE
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def queryPathInformation(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = 0
queryPathInfoParameters = smb.SMBQueryPathInformation_Parameters(flags = recvPacket['Flags2'], data = parameters)
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
path = connData['ConnectedShares'][recvPacket['Tid']]['path']
try:
infoRecord, errorCode = queryPathInformation(path, decodeSMBString(recvPacket['Flags2'], queryPathInfoParameters['FileName']), queryPathInfoParameters['InformationLevel'])
except Exception, e:
smbServer.log("queryPathInformation: %s" % e,logging.ERROR)
if infoRecord is not None:
respParameters = smb.SMBQueryPathInformationResponse_Parameters()
respData = infoRecord
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def queryFsInformation(connId, smbServer, recvPacket, parameters, data, maxDataCount = 0):
connData = smbServer.getConnectionData(connId)
errorCode = 0
# Get the Tid associated
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
data = queryFsInformation(connData['ConnectedShares'][recvPacket['Tid']]['path'], '', struct.unpack('<H',parameters)[0])
smbServer.setConnectionData(connId, connData)
return '','', data, errorCode
@staticmethod
def findNext2(connId, smbServer, recvPacket, parameters, data, maxDataCount):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
errorCode = STATUS_SUCCESS
findNext2Parameters = smb.SMBFindNext2_Parameters(flags = recvPacket['Flags2'], data = parameters)
sid = findNext2Parameters['SID']
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
if connData['SIDs'].has_key(sid):
searchResult = connData['SIDs'][sid]
respParameters = smb.SMBFindNext2Response_Parameters()
endOfSearch = 1
searchCount = 1
totalData = 0
for i in enumerate(searchResult):
data = i[1].getData()
lenData = len(data)
if (totalData+lenData) >= maxDataCount or (i[0]+1) >= findNext2Parameters['SearchCount']:
# We gotta stop here and continue on a find_next2
endOfSearch = 0
connData['SIDs'][sid] = searchResult[i[0]:]
respParameters['LastNameOffset'] = totalData
break
else:
searchCount +=1
respData += data
totalData += lenData
# Have we reached the end of the search or still stuff to send?
if endOfSearch > 0:
# Let's remove the SID from our ConnData
del(connData['SIDs'][sid])
respParameters['EndOfSearch'] = endOfSearch
respParameters['SearchCount'] = searchCount
else:
errorCode = STATUS_INVALID_HANDLE
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
@staticmethod
def findFirst2(connId, smbServer, recvPacket, parameters, data, maxDataCount):
connData = smbServer.getConnectionData(connId)
respSetup = ''
respParameters = ''
respData = ''
findFirst2Parameters = smb.SMBFindFirst2_Parameters( recvPacket['Flags2'], data = parameters)
if connData['ConnectedShares'].has_key(recvPacket['Tid']):
path = connData['ConnectedShares'][recvPacket['Tid']]['path']
searchResult, searchCount, errorCode = findFirst2(path,
decodeSMBString( recvPacket['Flags2'], findFirst2Parameters['FileName'] ),
findFirst2Parameters['InformationLevel'],
findFirst2Parameters['SearchAttributes'] )
respParameters = smb.SMBFindFirst2Response_Parameters()
endOfSearch = 1
sid = 0x80 # default SID
searchCount = 0
totalData = 0
for i in enumerate(searchResult):
#i[1].dump()
data = i[1].getData()
lenData = len(data)
if (totalData+lenData) >= maxDataCount or (i[0]+1) > findFirst2Parameters['SearchCount']:
# We gotta stop here and continue on a find_next2
endOfSearch = 0
# Simple way to generate a fid
if len(connData['SIDs']) == 0:
sid = 1
else:
sid = connData['SIDs'].keys()[-1] + 1
# Store the remaining search results in the ConnData SID
connData['SIDs'][sid] = searchResult[i[0]:]
respParameters['LastNameOffset'] = totalData
break
else:
searchCount +=1
respData += data
padLen = (8-(lenData % 8)) %8
respData += '\xaa'*padLen
totalData += lenData + padLen
respParameters['SID'] = sid
respParameters['EndOfSearch'] = endOfSearch
respParameters['SearchCount'] = searchCount
else:
errorCode = STATUS_SMB_BAD_TID
smbServer.setConnectionData(connId, connData)
return respSetup, respParameters, respData, errorCode
# Here we implement the commands handlers
class SMBCommands:
@staticmethod
def smbTransaction(connId, smbServer, SMBCommand, recvPacket, transCommands):
connData = smbServer.getConnectionData(connId)
respSMBCommand = smb.SMBCommand(recvPacket['Command'])
transParameters= smb.SMBTransaction_Parameters(SMBCommand['Parameters'])
# Do the stuff
if transParameters['ParameterCount'] != transParameters['TotalParameterCount']:
# TODO: Handle partial parameters
raise Exception("Unsupported partial parameters in TRANSACT2!")
else:
transData = smb.SMBTransaction_SData(flags = recvPacket['Flags2'])
# Standard says servers shouldn't trust Parameters and Data comes
# in order, so we have to parse the offsets, ugly
paramCount = transParameters['ParameterCount']
transData['Trans_ParametersLength'] = paramCount
dataCount = transParameters['DataCount']
transData['Trans_DataLength'] = dataCount
transData.fromString(SMBCommand['Data'])
if transParameters['ParameterOffset'] > 0:
paramOffset = transParameters['ParameterOffset'] - 63 - transParameters['SetupLength']
transData['Trans_Parameters'] = SMBCommand['Data'][paramOffset:paramOffset+paramCount]
else:
transData['Trans_Parameters'] = ''
if transParameters['DataOffset'] > 0:
dataOffset = transParameters['DataOffset'] - 63 - transParameters['SetupLength']
transData['Trans_Data'] = SMBCommand['Data'][dataOffset:dataOffset + dataCount]
else:
transData['Trans_Data'] = ''
# Call the handler for this TRANSACTION
if transParameters['SetupCount'] == 0:
# No subcommand, let's play with the Name
command = decodeSMBString(recvPacket['Flags2'],transData['Name'])
else:
command = struct.unpack('<H', transParameters['Setup'][:2])[0]
if transCommands.has_key(command):
# Call the TRANS subcommand
setup = ''
parameters = ''
data = ''
try:
setup, parameters, data, errorCode = transCommands[command](connId,
smbServer,
recvPacket,
transData['Trans_Parameters'],
transData['Trans_Data'],
transParameters['MaxDataCount'])
except Exception, e:
#print 'Transaction: %s' % e,e
smbServer.log('Transaction: (%r,%s)' % (command, e), logging.ERROR)
errorCode = STATUS_ACCESS_DENIED
#raise
if setup == '' and parameters == '' and data == '':
# Something wen't wrong
respParameters = ''
respData = ''
else:
# Build the answer
data = str(data)
remainingData = len(data)
parameters = str(parameters)
remainingParameters = len(parameters)
commands = []
dataDisplacement = 0
while remainingData > 0 or remainingParameters > 0:
respSMBCommand = smb.SMBCommand(recvPacket['Command'])
respParameters = smb.SMBTransactionResponse_Parameters()
respData = smb.SMBTransaction2Response_Data()
respParameters['TotalParameterCount'] = len(parameters)
respParameters['ParameterCount'] = len(parameters)
respData['Trans_ParametersLength'] = len(parameters)
respParameters['TotalDataCount'] = len(data)
respParameters['DataDisplacement'] = dataDisplacement
# TODO: Do the same for parameters
if len(data) > transParameters['MaxDataCount']:
# Answer doesn't fit in this packet
LOG.debug("Lowering answer from %d to %d" % (len(data),transParameters['MaxDataCount']) )
respParameters['DataCount'] = transParameters['MaxDataCount']
else:
respParameters['DataCount'] = len(data)
respData['Trans_DataLength'] = respParameters['DataCount']
respParameters['SetupCount'] = len(setup)