# Created by Aidmar import logging from random import randint, uniform from lea import Lea from Attack import BaseAttack from Attack.AttackParameters import Parameter as Param from Attack.AttackParameters import ParameterTypes logging.getLogger("scapy.runtime").setLevel(logging.ERROR) # noinspection PyPep8 from scapy.utils import RawPcapReader from scapy.layers.inet import IP, Ether, TCP, RandShort class EternalBlueExploit(BaseAttack.BaseAttack): # Metasploit default packet rate maxDefaultPPS = 100 minDefaultPPS = 5 # SMB port smb_port = 445 # Empirical values from Metasploit experiments minDefaultPort = 30000 maxDefaultPort = 50000 last_conn_dst_port = 4444 def __init__(self, statistics, pcap_file_path): """ Creates a new instance of the EternalBlue Exploit. :param statistics: A reference to the statistics class. """ # Initialize attack super(EternalBlueExploit, self).__init__(statistics, "EternalBlue Exploit", "Injects an EternalBlue exploit'", "Resource Exhaustion") # 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.INJECT_AT_TIMESTAMP: ParameterTypes.TYPE_FLOAT, Param.INJECT_AFTER_PACKET: ParameterTypes.TYPE_PACKET_POSITION, Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT } # PARAMETERS: initialize with default utilsvalues # (values are overwritten if user specifies them) most_used_ip_address = self.statistics.get_most_used_ip_address() if isinstance(most_used_ip_address, list): most_used_ip_address = most_used_ip_address[0] self.add_param_value(Param.IP_SOURCE, most_used_ip_address) self.add_param_value(Param.MAC_SOURCE, self.statistics.get_mac_address(most_used_ip_address)) self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count())) #self.add_param_value(Param.PORT_SOURCE, str(RandShort())) self.add_param_value(Param.PACKETS_PER_SECOND,self.maxDefaultPPS) # victim configuration # TO-DO: confirm that ip.dst uses Win OS random_ip_address = self.statistics.get_random_ip_address() self.add_param_value(Param.IP_DESTINATION, random_ip_address) destination_mac = self.statistics.get_mac_address(random_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) def generate_attack_pcap(self): def update_timestamp(timestamp, pps, maxdelay): """ Calculates the next timestamp to be used based on the packet per second rate (pps) and the maximum delay. :return: Timestamp to be used for the next packet. """ return timestamp + uniform(1 / pps, maxdelay) # Aidmar def getIntervalPPS(complement_interval_pps, timestamp): """ Gets the packet rate (pps) in specific time interval. :return: the corresponding packet rate for packet rate (pps) . """ for row in complement_interval_pps: if timestamp<=row[0]: return row[1] return complement_interval_pps[-1][1] # in case the timstamp > capture max timestamp # Timestamp timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP) # TO-DO: find better pkt rate pps = self.get_param_value(Param.PACKETS_PER_SECOND) randomdelay = Lea.fromValFreqsDict({1 / pps: 70, 2 / pps: 30, 5 / pps: 15, 10 / pps: 3}) # Aidmar - 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) # Aidmar - check ip.src == ip.dst if ip_source == ip_destination: print("\nERROR: Invalid IP addresses; source IP is the same as destination IP: " + ip_source + ".") import sys sys.exit(0) path_attack_pcap = None minDelay, maxDelay = self.get_reply_delay(ip_destination) # Scan (MS17) for EternalBlue # Read Win7_eternalblue_scan_vulnerable pcap file orig_ip_dst = None exploit_raw_packets = RawPcapReader("Win7_eternalblue_scan.pcap") port_source = randint(self.minDefaultPort,self.maxDefaultPort) # experiments show this range of ports 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") == self.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) # TCP tcp_pkt.setfieldval("sport",port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) new_pkt.time = timestamp_next_pkt maxdelay = randomdelay.random() pps = self.minDefaultPPS if getIntervalPPS(complement_interval_pps,timestamp_next_pkt) is None else max( getIntervalPPS(complement_interval_pps,timestamp_next_pkt), self.minDefaultPPS) timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay) # 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) # TCP tcp_pkt.setfieldval("dport", port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) timestamp_next_pkt = timestamp_next_pkt + uniform(minDelay, maxDelay) new_pkt.time = timestamp_next_pkt packets.append(new_pkt) # Inject EternalBlue exploit packets # Read Win7_eternalblue_exploit pcap file exploit_raw_packets = RawPcapReader("Win7_eternalblue_exploit.pcap") # Group the packets in conversations def packetsToConvs(exploit_raw_packets): conversations = {} orderList_conversations = [] for pkt_num, pkt in enumerate(exploit_raw_packets): eth_frame = Ether(pkt[0]) ip_pkt = eth_frame.payload ip_dst = ip_pkt.getfieldval("dst") ip_src = ip_pkt.getfieldval("src") tcp_pkt = ip_pkt.payload port_dst = tcp_pkt.getfieldval("dport") port_src = tcp_pkt.getfieldval("sport") conv_req = (ip_src, port_src, ip_dst, port_dst) conv_rep = (ip_dst, port_dst, ip_src, port_src) if conv_req not in conversations and conv_rep not in conversations: pktList = [pkt] conversations[conv_req] = pktList # Order list of conv orderList_conversations.append(conv_req) else: if conv_req in conversations: pktList = conversations[conv_req] pktList.append(pkt) conversations[conv_req] = pktList else: pktList = conversations[conv_rep] pktList.append(pkt) conversations[conv_rep] = pktList return (conversations,orderList_conversations) port_source = randint(self.minDefaultPort,self.maxDefaultPort) # experiments show this range of ports # conversations = {(ip.src, ip.dst, port.src, port.dst): packets} temp_tuple = packetsToConvs(exploit_raw_packets) conversations = temp_tuple[0] orderList_conversations = temp_tuple[1] for conv_index, conv in enumerate(orderList_conversations): conv_pkts = conversations[conv] 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") == self.smb_port: orig_ip_dst = ip_pkt.getfieldval("dst") # defining req/rep should be adapted to fit the last converstaion where # victim start a connection with the attacker # 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) # TCP tcp_pkt.setfieldval("sport", port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) # TO-DO: reply should have different timestamp delay new_pkt.time = timestamp_next_pkt maxdelay = randomdelay.random() pps = self.minDefaultPPS if getIntervalPPS(complement_interval_pps, timestamp_next_pkt) is None else max( getIntervalPPS(complement_interval_pps, timestamp_next_pkt), self.minDefaultPPS) timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay) # Not perfect timestamp #req_time = req_time + randomDelay || rep_time + randomDelay # 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) # TCP tcp_pkt.setfieldval("dport", port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) timestamp_next_pkt = timestamp_next_pkt + uniform(minDelay, maxDelay) new_pkt.time = timestamp_next_pkt # Not perfect timestamp # rep_time = req_time + replayDelay packets.append(new_pkt) else: # Last conversation where the victim start a connection with the attacker 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 # defining req/rep should be adapted to fit the last converstaion where # victim start a connection with the attacker # 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) # TCP tcp_pkt.setfieldval("sport", port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) # TO-DO: reply should have different timestamp delay new_pkt.time = timestamp_next_pkt maxdelay = randomdelay.random() pps = self.minDefaultPPS if getIntervalPPS(complement_interval_pps, timestamp_next_pkt) is None else max( getIntervalPPS(complement_interval_pps, timestamp_next_pkt), self.minDefaultPPS) timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay) # Not perfect timestamp # req_time = req_time + randomDelay || rep_time + randomDelay # 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) # TCP tcp_pkt.setfieldval("dport", port_source) new_pkt = (eth_frame / ip_pkt / tcp_pkt) timestamp_next_pkt = timestamp_next_pkt + uniform(minDelay, maxDelay) new_pkt.time = timestamp_next_pkt # Not perfect timestamp # rep_time = req_time + replayDelay 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