123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399 |
- import logging
- from random import randint, uniform
- from lea import Lea
- from scapy.utils import RawPcapReader
- from scapy.layers.inet import Ether
- from definitions import ROOT_DIR
- from Attack import BaseAttack
- from Attack.AttackParameters import Parameter as Param
- from Attack.AttackParameters import ParameterTypes
- from ID2TLib.Utility import update_timestamp, get_interval_pps, handle_most_used_outputs
- from ID2TLib.SMBLib import smb_port
- logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
- # noinspection PyPep8
- class EternalBlueExploit(BaseAttack.BaseAttack):
- template_scan_pcap_path = ROOT_DIR + "/../resources/Win7_eternalblue_scan.pcap"
- template_attack_pcap_path = ROOT_DIR + "/../resources/Win7_eternalblue_exploit.pcap"
- # Empirical values from Metasploit experiments
- minDefaultPort = 30000
- maxDefaultPort = 50000
- last_conn_dst_port = 4444
- def __init__(self):
- """
- Creates a new instance of the EternalBlue Exploit.
- """
- # Initialize attack
- super(EternalBlueExploit, self).__init__("EternalBlue Exploit", "Injects an EternalBlue exploit'",
- "Privilege elevation")
- # Define allowed parameters and their type
- self.supported_params = {
- Param.MAC_SOURCE: ParameterTypes.TYPE_MAC_ADDRESS,
- Param.IP_SOURCE: ParameterTypes.TYPE_IP_ADDRESS,
- Param.PORT_SOURCE: ParameterTypes.TYPE_PORT,
- Param.MAC_DESTINATION: ParameterTypes.TYPE_MAC_ADDRESS,
- Param.IP_DESTINATION: ParameterTypes.TYPE_IP_ADDRESS,
- Param.PORT_DESTINATION: ParameterTypes.TYPE_PORT,
- Param.INJECT_AT_TIMESTAMP: ParameterTypes.TYPE_FLOAT,
- Param.INJECT_AFTER_PACKET: ParameterTypes.TYPE_PACKET_POSITION,
- Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT
- }
- def init_params(self):
- """
- Initialize the parameters of this attack using the user supplied command line parameters.
- Use the provided statistics to calculate default parameters and to process user
- supplied queries.
- :param statistics: Reference to a statistics object.
- """
- # PARAMETERS: initialize with default utilsvalues
- # (values are overwritten if user specifies them)
- # Attacker configuration
- most_used_ip_address = self.statistics.get_most_used_ip_address()
- random_ip_address = self.statistics.get_random_ip_address()
- while random_ip_address == most_used_ip_address:
- random_ip_address = self.statistics.get_random_ip_address()
- self.add_param_value(Param.IP_SOURCE, random_ip_address)
- self.add_param_value(Param.MAC_SOURCE, self.statistics.get_mac_address(random_ip_address))
- self.add_param_value(Param.PORT_SOURCE, randint(self.minDefaultPort, self.maxDefaultPort))
- # Victim configuration
- self.add_param_value(Param.IP_DESTINATION, most_used_ip_address)
- destination_mac = self.statistics.get_mac_address(most_used_ip_address)
- if isinstance(destination_mac, list) and len(destination_mac) == 0:
- destination_mac = self.generate_random_mac_address()
- self.add_param_value(Param.MAC_DESTINATION, destination_mac)
- self.add_param_value(Param.PORT_DESTINATION, smb_port)
- # Attack configuration
- self.add_param_value(Param.PACKETS_PER_SECOND,
- (self.statistics.get_pps_sent(most_used_ip_address) +
- self.statistics.get_pps_received(most_used_ip_address)) / 2)
- self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count()))
- def generate_attack_pcap(self):
- # Timestamp
- timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP)
- pps = self.get_param_value(Param.PACKETS_PER_SECOND)
- # calculate complement packet rates of BG traffic per interval
- complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps)
- # Initialize parameters
- packets = []
- mac_source = self.get_param_value(Param.MAC_SOURCE)
- ip_source = self.get_param_value(Param.IP_SOURCE)
- port_source = self.get_param_value(Param.PORT_SOURCE)
- mac_destination = self.get_param_value(Param.MAC_DESTINATION)
- ip_destination = self.get_param_value(Param.IP_DESTINATION)
- port_destination = self.get_param_value(Param.PORT_DESTINATION)
- # Check ip.src == ip.dst
- self.ip_src_dst_equal_check(ip_source, ip_destination)
- path_attack_pcap = None
- # Set TTL based on TTL distribution of IP address
- source_ttl_dist = self.statistics.get_ttl_distribution(ip_source)
- if len(source_ttl_dist) > 0:
- source_ttl_prob_dict = Lea.fromValFreqsDict(source_ttl_dist)
- source_ttl_value = source_ttl_prob_dict.random()
- else:
- source_ttl_value = handle_most_used_outputs(self.statistics.process_db_query("most_used(ttlValue)"))
- destination_ttl_dist = self.statistics.get_ttl_distribution(ip_destination)
- if len(destination_ttl_dist) > 0:
- destination_ttl_prob_dict = Lea.fromValFreqsDict(destination_ttl_dist)
- destination_ttl_value = destination_ttl_prob_dict.random()
- else:
- destination_ttl_value = handle_most_used_outputs(self.statistics.process_db_query("most_used(ttlValue)"))
- # Set Window Size based on Window Size distribution of IP address
- source_win_dist = self.statistics.get_win_distribution(ip_source)
- if len(source_win_dist) > 0:
- source_win_prob_dict = Lea.fromValFreqsDict(source_win_dist)
- else:
- source_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
- source_win_prob_dict = Lea.fromValFreqsDict(source_win_dist)
-
- destination_win_dist = self.statistics.get_win_distribution(ip_destination)
- if len(destination_win_dist) > 0:
- destination_win_prob_dict = Lea.fromValFreqsDict(destination_win_dist)
- else:
- destination_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
- destination_win_prob_dict = Lea.fromValFreqsDict(destination_win_dist)
- # Set MSS (Maximum Segment Size) based on MSS distribution of IP address
- mss_value = handle_most_used_outputs(self.statistics.process_db_query("most_used(mssValue)"))
- if not mss_value:
- mss_value = 1465
- # Scan (MS17) for EternalBlue
- # Read Win7_eternalblue_scan pcap file
- orig_ip_dst = None
- exploit_raw_packets = RawPcapReader(self.template_scan_pcap_path)
- inter_arrival_times = self.get_inter_arrival_time(exploit_raw_packets)
- exploit_raw_packets = RawPcapReader(self.template_scan_pcap_path)
- source_origin_wins, destination_origin_wins = {}, {}
- for pkt_num, pkt in enumerate(exploit_raw_packets):
- eth_frame = Ether(pkt[0])
- ip_pkt = eth_frame.payload
- tcp_pkt = ip_pkt.payload
- if pkt_num == 0:
- if tcp_pkt.getfieldval("dport") == smb_port:
- orig_ip_dst = ip_pkt.getfieldval("dst") # victim IP
- # Request
- if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP
- # Ether
- eth_frame.setfieldval("src", mac_source)
- eth_frame.setfieldval("dst", mac_destination)
- # IP
- ip_pkt.setfieldval("src", ip_source)
- ip_pkt.setfieldval("dst", ip_destination)
- ip_pkt.setfieldval("ttl", source_ttl_value)
- # TCP
- tcp_pkt.setfieldval("sport",port_source)
- tcp_pkt.setfieldval("dport",port_destination)
- ## Window Size (mapping)
- source_origin_win = tcp_pkt.getfieldval("window")
- if source_origin_win not in source_origin_wins:
- source_origin_wins[source_origin_win] = source_win_prob_dict.random()
- new_win = source_origin_wins[source_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options [0] = ("MSS",mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- new_pkt.time = timestamp_next_pkt
- pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]#float(timeSteps.random())
- # Reply
- else:
- # Ether
- eth_frame.setfieldval("src", mac_destination)
- eth_frame.setfieldval("dst", mac_source)
- # IP
- ip_pkt.setfieldval("src", ip_destination)
- ip_pkt.setfieldval("dst", ip_source)
- ip_pkt.setfieldval("ttl", destination_ttl_value)
- # TCP
- tcp_pkt.setfieldval("dport", port_source)
- tcp_pkt.setfieldval("sport",port_destination)
- ## Window Size
- destination_origin_win = tcp_pkt.getfieldval("window")
- if destination_origin_win not in destination_origin_wins:
- destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
- new_win = destination_origin_wins[destination_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]#+ float(timeSteps.random())
- new_pkt.time = timestamp_next_pkt
- packets.append(new_pkt)
- # Inject EternalBlue exploit packets
- # Read Win7_eternalblue_exploit pcap file
- exploit_raw_packets = RawPcapReader(self.template_attack_pcap_path)
- port_source = randint(self.minDefaultPort,self.maxDefaultPort) # experiments show this range of ports
- # conversations = {(ip.src, ip.dst, port.src, port.dst): packets}
- conversations, orderList_conversations = self.packetsToConvs(exploit_raw_packets)
- conv_start_timesamp = timestamp_next_pkt
- for conv_index, conv in enumerate(orderList_conversations):
- conv_start_timesamp = conv_start_timesamp + uniform(0.001,0.01) # the distance between the starts of the converstaions
- timestamp_next_pkt = conv_start_timesamp
- conv_pkts = conversations[conv]
- inter_arrival_times = self.get_inter_arrival_time(conv_pkts)
- if conv_index == len(orderList_conversations) - 2: # Not the last conversation
- timestamp_next_pkt = packets[-1].time + uniform(0.001,0.01)
- if conv_index != len(orderList_conversations)-1: # Not the last conversation
- port_source += 2
- for pkt_num, pkt in enumerate(conv_pkts):
- eth_frame = Ether(pkt[0])
- ip_pkt = eth_frame.payload
- tcp_pkt = ip_pkt.payload
- if pkt_num == 0:
- if tcp_pkt.getfieldval("dport") == smb_port:
- orig_ip_dst = ip_pkt.getfieldval("dst")
- # Request
- if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP
- # Ether
- eth_frame.setfieldval("src", mac_source)
- eth_frame.setfieldval("dst", mac_destination)
- # IP
- ip_pkt.setfieldval("src", ip_source)
- ip_pkt.setfieldval("dst", ip_destination)
- ip_pkt.setfieldval("ttl", source_ttl_value)
- # TCP
- tcp_pkt.setfieldval("sport", port_source)
- tcp_pkt.setfieldval("dport", port_destination)
- ## Window Size
- source_origin_win = tcp_pkt.getfieldval("window")
- if source_origin_win not in source_origin_wins:
- source_origin_wins[source_origin_win] = source_win_prob_dict.random()
- new_win = source_origin_wins[source_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- new_pkt.time = timestamp_next_pkt
- pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num] #float(timeSteps.random())
- # Reply
- else:
- # Ether
- eth_frame.setfieldval("src", mac_destination)
- eth_frame.setfieldval("dst", mac_source)
- # IP
- ip_pkt.setfieldval("src", ip_destination)
- ip_pkt.setfieldval("dst", ip_source)
- ip_pkt.setfieldval("ttl", destination_ttl_value)
- # TCP
- tcp_pkt.setfieldval("dport", port_source)
- tcp_pkt.setfieldval("sport", port_destination)
- ## Window Size
- destination_origin_win = tcp_pkt.getfieldval("window")
- if destination_origin_win not in destination_origin_wins:
- destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
- new_win = destination_origin_wins[destination_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]#float(timeSteps.random())
- new_pkt.time = timestamp_next_pkt
- packets.append(new_pkt)
- else: # Last conversation where the victim start a connection with the attacker
- timestamp_next_pkt = packets[-1].time + uniform(0.001, 0.01)
- port_source = randint(self.minDefaultPort,self.maxDefaultPort)
- for pkt_num, pkt in enumerate(conv_pkts):
- eth_frame = Ether(pkt[0])
- ip_pkt = eth_frame.payload
- tcp_pkt = ip_pkt.payload
- # Request
- if tcp_pkt.getfieldval("dport") == self.last_conn_dst_port:
- # Ether
- eth_frame.setfieldval("src", mac_destination)
- eth_frame.setfieldval("dst", mac_source)
- # IP
- ip_pkt.setfieldval("src", ip_destination)
- ip_pkt.setfieldval("dst", ip_source)
- ip_pkt.setfieldval("ttl", destination_ttl_value)
- # TCP
- tcp_pkt.setfieldval("sport", port_source)
- # destination port is fixed 4444
- ## Window Size
- destination_origin_win = tcp_pkt.getfieldval("window")
- if destination_origin_win not in destination_origin_wins:
- destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
- new_win = destination_origin_wins[destination_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- new_pkt.time = timestamp_next_pkt
- pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]# float(timeSteps.random())
- # Reply
- else:
- # Ether
- eth_frame.setfieldval("src", mac_source)
- eth_frame.setfieldval("dst", mac_destination)
- # IP
- ip_pkt.setfieldval("src", ip_source)
- ip_pkt.setfieldval("dst", ip_destination)
- ip_pkt.setfieldval("ttl", source_ttl_value)
- # TCP
- tcp_pkt.setfieldval("dport", port_source)
- # source port is fixed 4444
- ## Window Size
- source_origin_win = tcp_pkt.getfieldval("window")
- if source_origin_win not in source_origin_wins:
- source_origin_wins[source_origin_win] = source_win_prob_dict.random()
- new_win = source_origin_wins[source_origin_win]
- tcp_pkt.setfieldval("window", new_win)
- ## MSS
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]# float(timeSteps.random())
- new_pkt.time = timestamp_next_pkt
- packets.append(new_pkt)
- # Store timestamp of first packet (for attack label)
- self.attack_start_utime = packets[0].time
- self.attack_end_utime = packets[-1].time
- if len(packets) > 0:
- packets = sorted(packets, key=lambda pkt: pkt.time)
- path_attack_pcap = self.write_attack_pcap(packets, True, path_attack_pcap)
- # return packets sorted by packet time_sec_start
- # pkt_num+1: because pkt_num starts at 0
- return pkt_num + 1, path_attack_pcap
|