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Update ccache with smb3 #2121

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Update ccache with smb3 #2121

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8 changes: 7 additions & 1 deletion impacket/smb3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@
import random
import string
import struct
import os
from six import indexbytes, b
from binascii import a2b_hex
from contextlib import contextmanager
Expand All @@ -50,6 +51,7 @@
STATUS_NO_MORE_FILES, STATUS_PENDING, STATUS_NOT_IMPLEMENTED, ERROR_MESSAGES
from impacket.spnego import SPNEGO_NegTokenInit, TypesMech, SPNEGO_NegTokenResp, ASN1_OID, asn1encode, ASN1_AID
from impacket.krb5.gssapi import KRB5_AP_REQ
from impacket.krb5.ccache import CCache


# For signing
Expand Down Expand Up @@ -690,7 +692,7 @@ def getCredentials(self):
self.__TGT,
self.__TGS)

def kerberosLogin(self, user, password, domain = '', lmhash = '', nthash = '', aesKey='', kdcHost = '', TGT=None, TGS=None, mutualAuth=False):
def kerberosLogin(self, user, password, domain = '', lmhash = '', nthash = '', aesKey='', kdcHost = '', TGT=None, TGS=None, mutualAuth=False, update_ccache=True):
# If TGT or TGS are specified, they are in the form of:
# TGS['KDC_REP'] = the response from the server
# TGS['cipher'] = the cipher used
Expand Down Expand Up @@ -762,6 +764,10 @@ def kerberosLogin(self, user, password, domain = '', lmhash = '', nthash = '', a
if TGS is None:
serverName = Principal('cifs/%s' % (self._Connection['ServerName']), type=constants.PrincipalNameType.NT_SRV_INST.value)
tgs, cipher, oldSessionKey, sessionKey = getKerberosTGS(serverName, domain, kdcHost, tgt, cipher, sessionKey)
if update_ccache and os.getenv('KRB5CCNAME'):
ccache = CCache.loadFile(os.getenv('KRB5CCNAME'))
ccache.fromTGS(tgs, oldSessionKey, sessionKey)
ccache.saveFile(os.getenv('KRB5CCNAME'), chmod=0o600)
else:
tgs = TGS['KDC_REP']
cipher = TGS['cipher']
Expand Down