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yIKEs.py
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#!/usr/bin/python3
import argparse
import os
import platform
import codecs
from scapy.all import *
import multiprocessing
import codecs
import versionID
from random import getrandbits
from ipaddress import IPv4Address,IPv4Network
import random
import crypto
load_contrib('ikev2')
sys.setrecursionlimit(30000)
shared_secret = None
my_private_key = None
my_public_key = None
peer_pub_key = None
my_nonce = None
#my_spi=0
peer_spi=0
sk_ei = None
sk_er = None
sk_ai = None
sk_ar = None
class half_ike_auth():
def __init__ (self,interface,stimeout,ike_destination_port,ike_source_port,first_payload,ike_payload_chain):
self.interface = interface
self.ike_destination_port =ike_destination_port
self.ike_source_port=ike_source_port
self.stimeout=stimeout
self.first_payload=first_payload
self.ike_payload_chain=ike_payload_chain
sniff(iface=self.interface, prn=self.handler, store=0, timeout=float(self.stimeout))
def handler(self,packets):
if (packets.haslayer(ARP)):
arp_request=packets.getlayer(ARP)
if(arp_request.op==1):
targetip=arp_request.psrc
targetmac=arp_request.hwsrc
sourceip=arp_request.pdst
arp_response = Ether(src="0a:00:27:00:00:00",dst=targetmac)/ARP(pdst=targetip, hwdst=targetmac, psrc=sourceip, op='is-at', hwsrc="0a:00:27:00:00:00")
sendp(arp_response,iface="vboxnet0",verbose=0)
if (packets.haslayer(IP) and packets.haslayer(UDP)):
udp=packets.getlayer(UDP)
if udp.sport==self.ike_destination_port or udp.dport==self.ike_source_port: #default IKEv2 UDP port
header=udp.payload
if(header.exch_type == 34):
if str(header.flags)=="Response":
print("this is an IKE_INIT Response packet from",packets.payload.src,"to",packets.payload.dst)
#print(header.show())
if(header.next_payload==41):
#print("Notify received")
if (header.payload.type==16390):
print("Cookie received:",header.payload.load.hex())
mypacket=Ether(src=packets.dst,dst=packets.src)/IP(src=packets.payload.dst,dst=packets.payload.src)/UDP(sport=self.ike_source_port,dport=self.ike_destination_port)/IKEv2(init_SPI=header.init_SPI,exch_type='IKE_SA_INIT',flags='Initiator',next_payload='Notify')/IKEv2_payload_Notify(type=16390,load=header.payload.load,next_payload=self.first_payload)/self.ike_payload_chain
sendp(mypacket,iface="vboxnet0",verbose=0)
#send(mypacket)
else:
#print("No cookie received")
mypacket=Ether(src=packets.dst,dst=packets.src)/IP(src=packets.payload.dst,dst=packets.payload.src)/UDP(sport=self.ike_source_port,dport=self.ike_destination_port)/IKEv2(init_SPI=header.init_SPI,exch_type=35,flags='Initiator')/IKEv2_payload_Encrypted(load="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")
sendp(mypacket,iface="vboxnet0",verbose=0)
class mySniffer():
def __init__ (self,interface,target_IP,recon,listen,key_length,IKE_payloads,IKE_payloads2,proposals,proposals2,subnet,stimeout,ike_destination_port,ike_source_port,length_proposal,length_transform,nu_of_tr,size_Notify_data,type_cert_request,fragments,incomplete_fragment,fi,fw,no_of_ca,spi,spi_number,spi_other):
self.interface = interface
self.target_IP=target_IP
self.recon = recon
self.listen = listen
self.key_length=key_length
self.IKE_payloads=IKE_payloads
self.IKE_payloads2=IKE_payloads2
self.proposals=proposals
self.proposals2=proposals2
self.subnet=subnet
self.stimeout=stimeout
self.ike_destination_port =ike_destination_port
self.ike_source_port=ike_source_port
self.length_proposal=length_proposal
self.length_transform=length_transform
self.nu_of_tr=nu_of_tr
self.size_Notify_data=size_Notify_data
self.type_cert_request=type_cert_request
self.auth_plain=None
self.fragments = fragments
self.incomplete_fragment=incomplete_fragment
self.cookie=None
self.fi=fi
self.fw=fw
self.no_of_ca=no_of_ca
self.spi=spi
self.spi_other=spi_other
self.spi_number=spi_number
sniff(iface=self.interface, prn=self.handler, store=0, timeout=float(self.stimeout))
def analyse_packet(self, nx_payload):
response = ""
while nx_payload.next_payload != 0 and nx_payload.next_payload != 35:
if nx_payload.next_payload==33:
response = response + "," + "SA"
proposals = nx_payload.payload.prop.trans
print(proposals.show())
elif nx_payload.next_payload==34:
response = response + "," + "KE"
key_received=str(codecs.encode(nx_payload.payload.load,"hex"))[2:-1]
dh_group=nx_payload.payload.group
elif nx_payload.next_payload==40:
response = response + "," + "Nonce"
nonce_received=str(codecs.encode(nx_payload.payload.load,"hex"))[2:-1]
elif nx_payload.next_payload==41:
if nx_payload.payload.type == 7:
response = response + "," + "Notify(INVALID_SYNTAX)"
elif nx_payload.payload.type == 14:
response = response + "," + "Notify(NO_PROPOSAL_CHOSEN)"
elif nx_payload.payload.type == 16404:
response = response + "," + "Notify(MULTIPLE_AUTH_SUPPORTED)"
elif nx_payload.payload.type == 16388:
response = response + "," + "Notify(NAT_DETECTION_SOURCE_IP)"
elif nx_payload.payload.type == 16389:
response = response + "," + "Notify(NAT_DETECTION_DESTINATION_IP)"
elif nx_payload.payload.type == 16390:
self.cookie=nx_payload.payload.load
response = response + "," + "Notify(COOKIE)"
elif nx_payload.payload.type == 16430:
response = response + "," + "Notify(IKEV2_FRAGMENTATION_SUPPORTED)"
else:
response = response + "," + "Notify("+str(nx_payload.payload.type)+")"
elif nx_payload.next_payload==43:
vendor_ID = str(codecs.encode(nx_payload.payload.vendorID,"hex"))[2:-1]
for key in versionID.vendor_IDs.keys():
if re.match(key,vendor_ID):
response = response + "," + "VendorID("+versionID.vendor_IDs.get(key)+")"
break
elif nx_payload.next_payload==46:
#print("ENCRYPTED PAYLOAD")
break
else:
print("next payload=",nx_payload.next_payload)
nx_payload=nx_payload.payload
return response
def extract_peer_key_and_nonce(self, examined_payload):
peer_pub_key=bytes()
peer_nonce=bytes()
while(examined_payload.next_payload != 0):
#print("Next payload",examined_payload.next_payload)
if(examined_payload.next_payload==34):
peer_pub_key = examined_payload.payload.load
#print("\nKE load=",peer_pub_key)
elif(examined_payload.next_payload==40):
peer_nonce = examined_payload.payload.load
#print("\nNonce load=",peer_nonce,"\n")
examined_payload=examined_payload.payload
return peer_pub_key,peer_nonce
def handler(self,packets):
global shared_secret
global my_private_key
global my_public_key
global peer_pub_key
global my_nonce
#global my_spi
global peer_spi
global sk_ei
global sk_er
global sk_ai
global sk_ar
key_received=""
dh_group=""
nonce_received=""
#print("my SPI:", my_spi.hex())
#print("my Nonce:", my_nonce.hex())
if (packets.haslayer(IP) and packets.haslayer(UDP) and packets[IP].src==self.target_IP):
payload=packets.getlayer(UDP)
if payload.sport==500 or payload.dport==500: #default IKEv2 UDP port
nx_payload=payload.payload
response = str(packets[IP].src) + self.analyse_packet(nx_payload)
if self.listen:
header=packets.getlayer(UDP).payload
if(header.exch_type == 34):
#print("this is an IKE_INIT packet")
if str(header.flags)=="Initiator":
peer_spi = header.init_SPI
print("IKEv2 packet received from an Initiator")
peer_pub_key,peer_nonce=self.extract_peer_key_and_nonce(header)
#Proposals and Transformations - We need to re-create it each time since the list is getting empty
proposals_copy = create_list_of_proposals(self.proposals)
DHGROUP =2
my_public_key, shared_secret = DiffieHellman(DHGROUP, peer_pub_key)
ENCR_id = crypto.EncrId(12)
ENCR_keylen = 256
INTEG_id = crypto.IntegId(12)
PRF_id = crypto.PrfId(5)
ike_init(self.target_IP,key_length,self.IKE_payloads,proposals_copy,int(values.length_ike),int(values.length_proposal),int(values.length_transform),int(values.nu_of_tr),int(values.size_Notify_data),int(values.type_cert_request),fw,fi,True,peer_spi,False,self.subnet,0,my_public_key,None,False,self.no_of_ca,target_IP,self.spi,self.spi_number,self.spi_other)
sk_d, sk_ai, sk_ar, sk_ei, sk_er, sk_pi, sk_pr = crypto.create_key(PRF_id, INTEG_id, ENCR_id, ENCR_keylen, shared_secret, peer_nonce, my_nonce, peer_spi, my_spi, old_sk_d=None)
#print("peer Public Key=",peer_pub_key.hex())
#print("my public key = ",my_public_key.hex())
#print("Initiator's/peer SPI=",peer_spi)
#print("Repsponder's/my SPI=",my_spi)
#print("peer Nonce=",peer_nonce)
#print("my Nonce=",my_nonce)
#print("Sk_ei=",sk_ei.hex())
#print("Sk_er=",sk_er.hex())
elif str(header.flags)=="Response":
print("IKEv2 packet sent from the Responder was received:")
peer_spi = header.resp_SPI
print(response)
DHGROUP =2
print("Initiator's/my SPI=",my_spi.hex())
print("Responder's/peer SPI=",peer_spi.hex())
if(self.cookie!=None):
#print(self.IKE_payloads)
print("COOKIE received:",self.cookie.hex())
self.IKE_payloads.insert(0,"Notify.16390")
#print(self.IKE_payloads)
proposals_copy = create_list_of_proposals(self.proposals)
#print(self.target_IP)
ike_init(self.target_IP,key_length,self.IKE_payloads,proposals_copy,int(values.length_ike),int(values.length_proposal),int(values.length_transform),int(values.nu_of_tr),int(values.size_Notify_data),int(values.type_cert_request),fw,fi,False,0,False,self.subnet,0,my_public_key,self.cookie,False,self.no_of_ca,target_IP,self.spi,self.spi_number,self.spi_other)
self.cookie=None
else:
peer_pub_key,peer_nonce=self.extract_peer_key_and_nonce(header)
shared_secret = DiffieHellman_create_session_key(DHGROUP, peer_pub_key, my_private_key)
ENCR_id = crypto.EncrId(12)
ENCR_keylen = 256
INTEG_id = crypto.IntegId(12)
PRF_id = crypto.PrfId(5)
block_size=16
integr = crypto.Integrity(INTEG_id)
iv=crypto.generate_iv(block_size)
#print("IV=",iv)
sk_d, sk_ai, sk_ar, sk_ei, sk_er, sk_pi, sk_pr = crypto.create_key(PRF_id, INTEG_id, ENCR_id, ENCR_keylen, shared_secret, my_nonce, peer_nonce, my_spi,peer_spi,old_sk_d=None)
#print("my public key = ",my_public_key.hex())
#print("my nonce =",my_nonce.hex())
#print("peer Public Key=",peer_pub_key.hex())
#print("peer nonce =",peer_nonce.hex())
#print("shared secret =",shared_secret.hex())
#print("Sk_ei=",sk_ei.hex())
#print("Sk_er=",sk_er.hex())
if(self.fi ==None):
if(self.auth_plain==None):
proposals_copy_2 = create_list_of_proposals(self.proposals2)
#consider of having independent length_proposal, length_transform, nu_of_tr
auth_proposals,nu_of_tr_initial = create_proposals(proposals_copy_2,self.length_proposal,self.length_transform,self.nu_of_tr)
first_payload,p = create_chain_payloads(self.IKE_payloads2,auth_proposals,my_public_key,my_nonce,self.type_cert_request,self.size_Notify_data,self.cookie,self.no_of_ca,self.target_IP,self.spi,self.spi_number)
#print(p.show())
self.auth_plain=raw(p)
plain = self.auth_plain
else:
first_payload=self.fi.readline().rstrip('\n')
plain = bytes.fromhex(self.fi.readline())
self.fi.close()
if self.fw:
self.fw.write(first_payload)
self.fw.write("\n")
self.fw.write(str(plain.hex()))
self.fw.close()
print("File written. Exiting...")
exit(0)
if (self.fragments > 0):
print("IKEv2 fragmentation will be performed")
#print("number of fragments =",self.fragments)
#plain_to_split = plain.hex()
#print(plain.hex())
size_of_initial_plain = len(plain)
fragment_size = int(size_of_initial_plain/self.fragments)
no_of_fragments=size_of_initial_plain/fragment_size
if(no_of_fragments > int(no_of_fragments)):
no_of_fragments=int(no_of_fragments)+1
else:
no_of_fragments=int(no_of_fragments)
print("Number of fragments =",no_of_fragments)
print("size of plain = ",size_of_initial_plain,", size of fragment = ",fragment_size)
if(fragment_size<1):
print("Too many fragments result in too small size of fragment_size; exiting; exiting")
exit(0)
else:
start =0
finish=start+fragment_size
fragment_number=0
while(finish < size_of_initial_plain):
fragment_number=fragment_number+1
new_plain = plain[start:finish]
#print(start, finish, new_plain.hex())
encrypted = encrypt_plain_text(new_plain,block_size,sk_ei,iv,integr.hash_size)
if(fragment_number==1):
auth = raw(IKEv2_payload_Encrypted_Fragment(next_payload=first_payload,load=encrypted,frag_total=no_of_fragments,frag_number=fragment_number))
else:
auth = raw(IKEv2_payload_Encrypted_Fragment(next_payload=0,load=encrypted,frag_total=no_of_fragments,frag_number=fragment_number))
header = IKEv2(init_SPI=my_spi,resp_SPI=peer_spi,exch_type=35,next_payload=53,flags="Initiator",id=1)/auth
header=raw(header)
checksum = crypto.add_checksum(header[:len(header)-integr.hash_size],sk_ai,INTEG_id)
header = header[:len(header)-integr.hash_size] + checksum
data = IP(dst=self.target_IP, proto='udp')/UDP(dport=self.ike_destination_port, sport=self.ike_source_port)/header
send(data)
start=finish
finish=finish+fragment_size
if ((start<size_of_initial_plain) and not (values.incomplete_fragment)):
fragment_number=fragment_number+1
new_plain = plain[start:size_of_initial_plain]
#print(start, finish, new_plain.hex())
encrypted = encrypt_plain_text(new_plain,block_size,sk_ei,iv,integr.hash_size)
auth = raw(IKEv2_payload_Encrypted_Fragment(next_payload=0,load=encrypted,frag_total=no_of_fragments,frag_number=fragment_number))
header = IKEv2(init_SPI=my_spi,resp_SPI=peer_spi,exch_type=35,next_payload=53,flags="Initiator",id=1)/auth
header=raw(header)
checksum = crypto.add_checksum(header[:len(header)-integr.hash_size],sk_ai,INTEG_id)
header = header[:len(header)-integr.hash_size] + checksum
data = IP(dst=self.target_IP, proto='udp')/UDP(dport=self.ike_destination_port, sport=self.ike_source_port)/header
send(data)
print("fragmented IKE_AUTH packet as Initiator was sent")
#exit(0)
else:
encrypted = encrypt_plain_text(plain,block_size,sk_ei,iv,integr.hash_size)
auth = raw(IKEv2_payload_AUTH(next_payload=first_payload,load=encrypted))
auth = auth[:4]+auth[8:]#remove scapy padding of 0000 in init_vector place
length = '{0:x}'.format(int(len(auth)))
if(len(auth)<=15):
length = "0" + length
auth = auth[:3]+bytes.fromhex(length)+auth[4:]#add the new, correct length
elif(len(auth)<=255):
auth = auth[:3]+bytes.fromhex(length)+auth[4:]#add the new, correct length
elif(len(auth)<=4095):
length = "0" + length
auth = auth[:2]+bytes.fromhex(length)+auth[4:]#add the new, correct length
else:
auth = auth[:2]+bytes.fromhex(length)+auth[4:]#add the new, correct length
header = IKEv2(init_SPI=my_spi,resp_SPI=peer_spi,exch_type=35,next_payload=46,flags="Initiator",id=1)/auth
header=raw(header)
checksum = crypto.add_checksum(header[:len(header)-integr.hash_size],sk_ai,INTEG_id)
header = header[:len(header)-integr.hash_size] + checksum
data = IP(dst=self.target_IP, proto='udp')/UDP(dport=self.ike_destination_port, sport=self.ike_source_port)/header
#print("length=",length,len(auth))
#print("IP packet length = ",len(data))
packet = send(fragment(data,1450))
print("IKE_AUTH packet as Initiator was sent")
#exit(0)
elif(header.exch_type == 35):
#print("this is an IKE_AUTH packet")
if str(header.flags)=="Initiator":
#print(header.show())
#print("Next Payload =",header.payload.next_payload)
if(header.next_payload==46):
print("this is an encrypted and authenticated payload")
INTEG_id = crypto.IntegId(12)
print("INTEGRITY VERIFICATION:",crypto.verify_checksum(bytes(header), sk_ai, INTEG_id))
encrypted =header.payload.load
plain=crypto.crypto_decrypt(encrypted,sk_ei,INTEG_id)
#print("length of received encrypted=",len(encrypted))
#print("length of encrypted=",len(encrypted))
#print("length of plain text=",len(plain))
#print(plain.hex())
if(header.payload.next_payload==35):
print("Identification - Initiator")
packet=IKEv2_payload_IDi(bytes(plain))
#print(packet.summary())
#print(packet.show())
#exit()
else:
print("IKE_AUTH pachet sent from the Responder was received")
if(header.next_payload==46):
#print("this is an encrypted and authenticated payload")
INTEG_id = crypto.IntegId(12)
#print("INTEGRITY VERIFICATION:",crypto.verify_checksum(bytes(header), sk_ar, INTEG_id))
encrypted =header.payload.load
plain=crypto.crypto_decrypt(encrypted,sk_er,INTEG_id)
if(header.payload.next_payload==41):
packet=IKEv2_payload_Notify(bytes(plain))
response = self.analyse_packet(packet)
print(response)
print("Response received:")
print(packet.show())
else:
print("Next Payload of Encrypted packet=",header.payload.next_payload)
#exit(0)
elif self.recon:
print("Response received:")
print(response)
def encrypt_plain_text(new_plain,block_size,sk_ei,iv,hash_size):
padlen = block_size - (len(new_plain) % block_size) - 1
new_plain += b'\x00' * padlen + bytes([padlen])
ciphertext=crypto.encrypt(sk_ei, bytes(iv), new_plain)
encrypted = iv + ciphertext
encrypted = encrypted + b'\x00' *hash_size
return encrypted
def create_list_of_proposals(the_proposals):
#Proposals and Transformations
list_of_proposals = the_proposals.split("/")
proposals = []
for proposal in list_of_proposals:
list_of_transforms = proposal.split(",")
proposals.append(list_of_transforms)
return proposals
def create_proposals(list_of_proposals,length_proposal,length_transform,nu_of_tr):
nu_of_tr_initial = nu_of_tr #place holder for the initial number of transforms, because nu_of_tr changes later
nu_of_proposals=len(list_of_proposals)
print("Number of Proposals per Security Associations =",nu_of_proposals)
if nu_of_tr > 255:
print("The number of transformations in the corresponding field of the Proposals cannot be greater than 255")
exit(0)
list_of_transforms = []
#DEFINE PROPOSALS
transforms_binary=[]
transforms_number=[]
for mytransforms in list_of_proposals:
while mytransforms:
transform = mytransforms.pop(0).split(".")
ciphers=transform[1].split("-")
if len(ciphers) > 1:
for i in range (int(ciphers[0]),int(ciphers[1])+1):
list_of_transforms.append(transform[0]+"."+str(i))
else:
list_of_transforms.append(transform[0]+"."+ciphers[0])
#DEFINE THE TRANSFORMATIONS
no_of_transforms=len(list_of_transforms)
if nu_of_tr_initial < 0:
nu_of_tr = no_of_transforms
#print("Number of transformations in the Proposal =",no_of_transforms)
#print("The number of transformations in the corresponding field of the Proposals =",nu_of_tr)
if nu_of_tr > 255:
print("the number of transofrms in the corresponding field cannot be bigger than 255; exiting...")
exit(0)
transforms_number.append(nu_of_tr)
if no_of_transforms==1:#If there is only one transformation
transform = list_of_transforms.pop(0).split(".")
if length_transform < 0:
if int(transform[0]) == 1: # If it is an Encryption algorithm, it has a Key length field in the parameters
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=12,key_length=key_length)
else:
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=8)
else:
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=length_transform)
else:#If there is more than one transformation
transform = list_of_transforms.pop(0).split(".")
if length_transform < 0:
if int(transform[0]) == 1: # If it is an Encryption algorithm, it has a Key length field in the parameters
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=3, length=12,key_length=key_length)
else:
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=3, length=8)
else:
transforms = IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=length_transform)
while list_of_transforms:
transform = list_of_transforms.pop(0).split(".")
if len(list_of_transforms)==0:#If this was the last transform on the list
if int(transform[0]) == 1: # If it is an Encryption algorithm, it has a Key length field in the parameters
transforms = transforms / IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=12,key_length=key_length)
else:
transforms = transforms / IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=None, length=8)
else:
if int(transform[0]) == 1: # If it is an Encryption algorithm, it has a Key length field in the parameters
transforms = transforms / IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=3, length=12,key_length=key_length)
else:
transforms = transforms / IKEv2_payload_Transform(transform_type=int(transform[0]), transform_id=int(transform[1]), next_payload=3, length=8)
transforms_binary.append(transforms)
if nu_of_proposals == 1:
if length_proposal < 0:
proposals = IKEv2_payload_Proposal(proto=1,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
else:
proposals = IKEv2_payload_Proposal(proto=1,length=length_proposal,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
else:
proposal_id = 1
if length_proposal < 0:
proposals = IKEv2_payload_Proposal(proto=1,proposal=proposal_id,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
for i in range (1,nu_of_proposals):
proposal_id=proposal_id+1
proposals = proposals / IKEv2_payload_Proposal(proto=1,proposal=proposal_id,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
else:
proposals = IKEv2_payload_Proposal(proto=1,length=length_proposal,proposal=proposal_id,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
for i in range (1,nu_of_proposals):
proposal_id=proposal_id+1
proposals = proposals / IKEv2_payload_Proposal(proto=1,length=length_proposal,proposal=proposal_id,trans_nb=transforms_number.pop(0),trans=transforms_binary.pop(0),)
return proposals,nu_of_tr_initial
def create_chain_payloads(ike_payloads,proposals,key_exchange,my_nonce,type_cert_request,size_Notify_data,cookie, no_of_ca,target_IP,spi, spi_number):
len_ike_payloads = int(len(ike_payloads))
first_payload = None
payload = None
#print("IKE Payload:",ike_payloads)
certificate_authority = int(no_of_ca)*"AAAAAAAAAAAAAAAAAAAA"
spi_number=int(spi_number)
for index,ipay in enumerate(ike_payloads):
if ipay == 'SA':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'SA'
payload = IKEv2_payload_SA(next_payload='Notify',prop=proposals)
else:
payload = payload/IKEv2_payload_SA(next_payload='Notify',prop=proposals)
else:
if (payload == None):
first_payload = 'SA'
payload = IKEv2_payload_SA(next_payload=ike_payloads[index+1],prop=proposals)
else:
payload = payload/IKEv2_payload_SA(next_payload=ike_payloads[index+1],prop=proposals)
except Exception as e:
print(str(e), "not supported; exiting (001).")
exit(0)
else:
if (payload == None):
first_payload = 'SA'
payload = payload/IKEv2_payload_SA(next_payload='None',prop=proposals)
else:
payload = payload/IKEv2_payload_SA(next_payload='None',prop=proposals)
elif ipay == 'KE':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'KE'
payload = IKEv2_payload_KE(next_payload='Notify', group='1024MODPgr', load=key_exchange)
else:
payload = payload/IKEv2_payload_KE(next_payload='Notify', group='1024MODPgr', load=key_exchange)
else:
if (payload == None):
first_payload = 'KE'
payload = IKEv2_payload_KE(next_payload=ike_payloads[index+1], group='1024MODPgr', load=key_exchange)
else:
payload = payload/IKEv2_payload_KE(next_payload=ike_payloads[index+1], group='1024MODPgr', load=key_exchange)
except Exception as e:
print(str(e), "not supported; exiting (002).")
exit(0)
else:
if (payload == None):
first_payload = 'KE'
payload = IKEv2_payload_KE(next_payload='None', group='1024MODPgr', load=key_exchange)
else:
payload = payload / IKEv2_payload_KE(next_payload='None', group='1024MODPgr', load=key_exchange)
elif ipay == 'Nonce':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Nonce'
payload = IKEv2_payload_Nonce(next_payload="Notify", load=my_nonce)
else:
payload = payload/IKEv2_payload_Nonce(next_payload="Notify", load=my_nonce)
else:
if (payload == None):
first_payload = 'Nonce'
payload = IKEv2_payload_Nonce(next_payload=ike_payloads[index+1], load=my_nonce)
else:
payload = payload/IKEv2_payload_Nonce(next_payload=ike_payloads[index+1], load=my_nonce)
except Exception as e:
print(str(e), "not supported; exiting (003).")
exit(0)
else:
if (payload == None):
first_payload = 'Nonce'
payload = IKEv2_payload_Nonce(next_payload='None', load=my_nonce)
else:
payload = payload/IKEv2_payload_Nonce(next_payload='None', load=my_nonce)
elif ipay == 'CERTREQ':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'CERTREQ'
payload = IKEv2_payload_CERTREQ(next_payload="Notify",cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload/IKEv2_payload_CERTREQ(next_payload="Notify",cert_type=type_cert_request,cert_data=certificate_authority)
else:
if (payload == None):
first_payload = 'CERTREQ'
payload = IKEv2_payload_CERTREQ(next_payload=ike_payloads[index+1],cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload/IKEv2_payload_CERTREQ(next_payload=ike_payloads[index+1],cert_type=type_cert_request,cert_data=certificate_authority)
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
first_payload = 'CERTREQ'
payload = IKEv2_payload_CERTREQ(next_payload='None',cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload / IKEv2_payload_CERTREQ(next_payload='None',cert_type=type_cert_request,cert_data=certificate_authority)
elif ipay == 'CERT':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'CERT'
payload = IKEv2_payload_CERT(next_payload="Notify",cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload/IKEv2_payload_CERT(next_payload="Notify",cert_type=type_cert_request,cert_data=certificate_authority)
else:
if (payload == None):
first_payload = 'CERT'
payload = IKEv2_payload_CERT(next_payload=ike_payloads[index+1],cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload/IKEv2_payload_CERT(next_payload=ike_payloads[index+1],cert_type=type_cert_request,cert_data=certificate_authority)
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
first_payload = 'CERT'
payload = IKEv2_payload_CERT(next_payload='None',cert_type=type_cert_request,cert_data=certificate_authority)
else:
payload = payload / IKEv2_payload_CERT(next_payload='None',cert_type=type_cert_request,cert_data=certificate_authority)
elif ipay == 'Delete':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 42
payload = IKEv2_payload_Delete(next_payload="Notify",proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
else:
payload = payload/IKEv2_payload_Delete(next_payload="Notify",proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
else:
if (payload == None):
first_payload = 42
payload = IKEv2_payload_Delete(next_payload=ike_payloads[index+1],proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
else:
payload = payload/IKEv2_payload_Delete(next_payload=ike_payloads[index+1],proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
first_payload = 42
payload = IKEv2_payload_Delete(next_payload='None',proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
else:
payload = payload / IKEv2_payload_Delete(next_payload='None',proto=1,no_of_SPIs=spi_number,SPI=bytearray.fromhex(spi))
elif ipay == 'IDi':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'IDi'
payload = IKEv2_payload_IDi(load='192.168.56.1',next_payload="Notify")
else:
payload = payload/IKEv2_payload_IDi(load='192.168.56.1',next_payload="Notify")
else:
if (payload == None):
first_payload = 'IDi'
payload = IKEv2_payload_IDi(load='192.168.56.1',next_payload=ike_payloads[index+1])
else:
payload = payload/IKEv2_payload_IDi(load='192.168.56.1',next_payload=ike_payloads[index+1])
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
payload = IKEv2_payload_IDi(load='192.168.56.1',next_payload='None')
first_payload = 'IDi'
else:
payload = payload / IKEv2_payload_IDi(load='192.168.56.1',next_payload='None')
elif ipay == 'IDr':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
#payload = IKEv2_payload_IDr(load='192.168.56.101',next_payload="Notify")
payload = IKEv2_payload_IDr(load=target_IP,next_payload="Notify")
first_payload = 'IDr'
else:
#payload = payload/IKEv2_payload_IDr(load='192.168.56.101',next_payload="Notify")
payload = payload/IKEv2_payload_IDr(load=target_IP,next_payload="Notify")
else:
if (payload == None):
#payload = IKEv2_payload_IDr(load='192.168.56.101',next_payload=ike_payloads[index+1])
payload = IKEv2_payload_IDr(load=target_IP,next_payload=ike_payloads[index+1])
first_payload = 'IDr'
else:
#payload = payload/IKEv2_payload_IDr(load='192.168.56.101',next_payload=ike_payloads[index+1])
payload = payload/IKEv2_payload_IDr(load=target_IP,next_payload=ike_payloads[index+1])
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
#payload = IKEv2_payload_IDr(load='192.168.56.101',next_payload='None')
payload = IKEv2_payload_IDr(load=target_IP,next_payload='None')
first_payload = 'IDr'
else:
#payload = payload/IKEv2_payload_IDr(load='192.168.56.101',next_payload='None')
payload = payload/IKEv2_payload_IDr(load=target_IP,next_payload='None')
elif ipay == 'TSi':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
payload = IKEv2_payload_TSi(number_of_TSs=1,next_payload="Notify",traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSi'
else:
payload = payload/IKEv2_payload_TSi(number_of_TSs=1,next_payload="Notify",traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
else:
if (payload == None):
payload = IKEv2_payload_TSi(number_of_TSs=1,next_payload=ike_payloads[index+1],traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSi'
else:
payload = payload/IKEv2_payload_TSi(number_of_TSs=1,next_payload=ike_payloads[index+1],traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
payload = IKEv2_payload_TSi(number_of_TSs=1,next_payload='None',traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSi'
else:
payload = payload/IKEv2_payload_TSi(number_of_TSs=1,next_payload='None',traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
elif ipay == 'TSr':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
payload = IKEv2_payload_TSr(number_of_TSs=1,next_payload="Notify",traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSr'
else:
payload = payload/IKEv2_payload_TSr(number_of_TSs=1,next_payload="Notify",traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
else:
if (payload == None):
payload = IKEv2_payload_TSr(number_of_TSs=1,next_payload=ike_payloads[index+1],traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSr'
else:
payload = payload/IKEv2_payload_TSr(number_of_TSs=1,next_payload=ike_payloads[index+1],traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
payload = IKEv2_payload_TSr(number_of_TSs=1,next_payload='None',traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
first_payload = 'TSr'
else:
payload = payload/IKEv2_payload_TSr(number_of_TSs=1,next_payload='None',traffic_selector=IPv4TrafficSelector(IP_protocol_ID="All protocols",starting_address_v4= "0.0.0.0",ending_address_v4= "255.255.255.255"))
elif ipay == 'AUTH':
if index < len_ike_payloads-1:
try:
if ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'AUTH'
payload = IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload="Notify")
else:
payload = payload/IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload="Notify")
else:
if (payload == None):
payload = IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload=ike_payloads[index+1])
first_payload = 'AUTH'
else:
payload = payload/IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload=ike_payloads[index+1])
except Exception as e:
print(str(e), "not supported; exiting (010).")
exit(0)
else:
if (payload == None):
payload = IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload='None')
first_payload = 'AUTH'
else:
payload = payload/IKEv2_payload_AUTH(auth_type="Shared Key Message Integrity Code",load= "\xed'H\x86@IlZ\x1f\xe9\xaa\xe6_A\nR\x8a\x8b\x0f\xf1k\xd6\x9e\xd3\x96\x19\xe6\x8d\x16t\x108",next_payload='None')
elif ipay.startswith("Notify"):
NotifyMessage = ipay.split('.')
if len(NotifyMessage) < 2:
print(NotifyMessage,"You need to define the type of the Notify Message; exiting (006).")
exit(0)
MyNotifyTypes = NotifyMessage[1].split('-')
AllNotifyTypes = []
if len(MyNotifyTypes)<2:
AllNotifyTypes.append(int(MyNotifyTypes[0]))
else:
for i in range (int(MyNotifyTypes[0]),int(MyNotifyTypes[1])+1):
AllNotifyTypes.append(i)
len_of_AllNotifyTypes = len(AllNotifyTypes)
for NotifyType in AllNotifyTypes:
if index < len_ike_payloads-1 + len_of_AllNotifyTypes -1:
len_of_AllNotifyTypes = len_of_AllNotifyTypes - 1
try:
#IKEv2_payload_Notify(type="INITIAL_CONTACT") - Use type 16384
#IKEv2_payload_Notify(type="EAP_ONLY_AUTHENTICATION") - Use type 16417
#IKEv2_payload_Notify(type="IKEV2_MESSAGE_ID_SYNC_SUPPORTED") - Use type 16420
if NotifyType==16431:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload=ike_payloads[index+1])
elif NotifyType==16388:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload=ike_payloads[index+1])
elif NotifyType==16389:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload=ike_payloads[index+1])
elif NotifyType==16390:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
if (cookie==None):
payload = IKEv2_payload_Notify(type=16390,next_payload='Notify')
else:
payload = IKEv2_payload_Notify(type=16390,load=cookie,next_payload='Notify')
else:
if (cookie==None):
payload = payload / IKEv2_payload_Notify(type=16390,next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16390,load=cookie,next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
if (cookie==None):
payload = IKEv2_payload_Notify(type=16390,next_payload='Notify')
else:
payload = IKEv2_payload_Notify(type=16390,load=cookie,next_payload='Notify')
else:
if (cookie==None):
payload = payload / IKEv2_payload_Notify(type=16390,next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=16390,load=cookie,next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
if (cookie==None):
payload = IKEv2_payload_Notify(type=16390,next_payload=ike_payloads[index+1])
else:
payload = IKEv2_payload_Notify(type=16390,load=cookie,next_payload=ike_payloads[index+1])
else:
if (cookie==None):
payload = payload / IKEv2_payload_Notify(type=16390,next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=16390,load=cookie,next_payload=ike_payloads[index+1])
elif NotifyType > 16439 and NotifyType < 16450:
if size_Notify_data > 0:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify',load=os.urandom(size_Notify_data))
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify',load=os.urandom(size_Notify_data))
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify',load=os.urandom(size_Notify_data))
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify',load=os.urandom(size_Notify_data))
else:
if (payload == None):
first_payload = 'Notify'
paylaod = IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1],load=os.urandom(size_Notify_data))
else:
paylaod = payload / IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1],load=os.urandom(size_Notify_data))
else:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
paylaod = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
paylaod = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1])
elif NotifyType < 65536 and NotifyType > -1:
if len_of_AllNotifyTypes > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
elif ike_payloads[index+1].startswith('Notify'):
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='Notify')
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1])
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload=ike_payloads[index+1])
else:
print("Notify Type must be in the range 0-65535; exiting (007a)")
exit(0)
except Exception as e:
print(str(e), "not supported; exiting (008).")
exit(0)
else:
try:
if NotifyType==16431:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='None')
else:
payload = payload / IKEv2_payload_Notify(type=16431,load= str('\x00\x02\x00\x03\x00\x04\x00\x05'),next_payload='None')
elif NotifyType==16388:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='None')
else:
payload = payload / IKEv2_payload_Notify(type=16388,load=os.urandom(20),next_payload='None')
elif NotifyType==16389:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='None')
else:
payload = payload / IKEv2_payload_Notify(type=16389,load=os.urandom(20),next_payload='None')
elif NotifyType > 16439 and NotifyType < 16450:
if size_Notify_data > 0:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='None',load=os.urandom(size_Notify_data))
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='None',load=os.urandom(size_Notify_data))
else:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='None')
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='None')
elif NotifyType < 65536 and NotifyType > -1:
if (payload == None):
first_payload = 'Notify'
payload = IKEv2_payload_Notify(type=NotifyType,next_payload='None')
else:
payload = payload / IKEv2_payload_Notify(type=NotifyType,next_payload='None')
else:
print("Notify Type must be in the range 0-65535; exiting (007b)")
exit(0)
except Exception as e:
print(str(e), "not supported; exiting (009).")
exit(0)
else:
print(ipay," header not supported; exiting (005).")
exit(0)
return first_payload, payload
def create_chain(proposals,nu_of_tr_initial,ike_payloads,length_ike,SPIr,size_Notify_data,type_cert_request,responder,key_exchange,cookie,no_of_ca,target_IP,spi,spi_number,spi_other):
#Construct the chain of IKEv2 Payloads
first_payload = ike_payloads[0]
if length_ike < 0:
if first_payload.startswith("Notify"):
first_payload="Notify"
#print("my SPI:",my_spi.hex())
if responder:
ikev2 = IKEv2(init_SPI=SPIr,resp_SPI=my_spi, next_payload=first_payload, exch_type='IKE_SA_INIT', flags='Response', id=0)
else:
if spi == '':
ikev2 = IKEv2(init_SPI=my_spi,next_payload=first_payload, exch_type='IKE_SA_INIT', flags='Initiator',id=0)
else:
#ikev2 = IKEv2(init_SPI=bytearray.fromhex('4dc9b679ee4a6320'),resp_SPI=bytearray.fromhex(spi),next_payload=first_payload, exch_type='INFORMATIONAL', flags='Response',id=1)
ikev2 = IKEv2(init_SPI=bytearray.fromhex(spi_other),resp_SPI=bytearray.fromhex(spi),next_payload=first_payload, exch_type='INFORMATIONAL', flags='Response',id=1)
else:
if first_payload.startswith("Notify"):
first_payload="Notify"