ID2T-toolkit/code/Attack/EternalBlueExploit.py

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):
    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, randint(1, 64))

        # 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(0.1 / pps, maxdelay)


        # 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})

        # 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)

        path_attack_pcap = None

        # Scan (MS17) for EternalBlue
        # Read Win7_eternalblue_scan_vulnerable pcap file
        orig_ip_dst = None
        exploit_raw_packets = RawPcapReader("Win7_eternalblue_scan.pcap")
        for pkt_num, pkt in enumerate(exploit_raw_packets):
            eth_frame = Ether(pkt[0])
            ip_pkt = eth_frame.payload
            tcp_pkt = ip_pkt.payload

            smb_port = 445
            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:
                # 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)
            # 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)
            # TO-DO: reply should have different timestamp delay
            new_pkt.time = timestamp_next_pkt

            packets.append(new_pkt)

            maxdelay = randomdelay.random()
            timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay)


        # Inject EternalBlue exploit packets
        # Read Win7_eternalblue_exploit pcap file
        exploit_raw_packets = RawPcapReader("Win7_eternalblue_exploit.pcap")
        for pkt_num, pkt in enumerate(exploit_raw_packets):
            eth_frame = Ether(pkt[0])
            ip_pkt = eth_frame.payload
            tcp_pkt = ip_pkt.payload

            smb_port = 445
            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:
                # 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)
            # 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)
            # TO-DO: reply should have different timestamp delay
            new_pkt.time = timestamp_next_pkt

            packets.append(new_pkt)

            maxdelay = randomdelay.random()
            timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay)


        # 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