ID2T-toolkit/code/Attack/SQLiAttack.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 SQLiAttack(BaseAttack.BaseAttack):
    template_attack_pcap_path = "resources/ATutorSQLi.pcap"
    # HTTP port
    http_port = 80
    # Metasploit experiments show this range of ports
    minDefaultPort = 30000
    maxDefaultPort = 50000

    def __init__(self, statistics, pcap_file_path):
        """
        Creates a new instance of the SQLi Attack.

        :param statistics: A reference to the statistics class.
        """
        # Initialize attack
        super(SQLiAttack, self).__init__(statistics, "SQLi Attack", "Injects a SQLi attack'",
                                        "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.MAC_DESTINATION: ParameterTypes.TYPE_MAC_ADDRESS,
            Param.IP_DESTINATION: ParameterTypes.TYPE_IP_ADDRESS,
            Param.TARGET_HOST: ParameterTypes.TYPE_DOMAIN,
            #Param.TARGET_URI: ParameterTypes.TYPE_URI,
            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.TARGET_URI, "/")
        self.add_param_value(Param.TARGET_HOST, "www.hackme.com")
        self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count()))
        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)
        # victim configuration
        # consider that the destination has port 80 opened
        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):
            """
            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.
            """
            # Calculate the request timestamp
            # A distribution to imitate the bursty behavior of traffic
            randomdelay = Lea.fromValFreqsDict({1 / pps: 70, 2 / pps: 20, 5 / pps: 7, 10 / pps: 3})
            return timestamp + uniform(1 / pps, randomdelay.random())

        # 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)
        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)
        mac_destination = self.get_param_value(Param.MAC_DESTINATION)
        ip_destination = self.get_param_value(Param.IP_DESTINATION)
        target_host = self.get_param_value(Param.TARGET_HOST)
        target_uri = "/" #self.get_param_value(Param.TARGET_URI)

        # 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 = 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 = self.statistics.process_db_query("most_used(ttlValue)")

        # Inject SQLi Attack
        # Read SQLi Attack pcap file
        orig_ip_dst = None
        exploit_raw_packets = RawPcapReader(self.template_attack_pcap_path)
        inter_arrival_time_dist = self.get_inter_arrival_time_dist(exploit_raw_packets)
        timeSteps = Lea.fromValFreqsDict(inter_arrival_time_dist)
        exploit_raw_packets = RawPcapReader(self.template_attack_pcap_path)

        port_source = randint(self.minDefaultPort,self.maxDefaultPort) # experiments show this range of ports

        # Random TCP sequence numbers
        global attacker_seq
        attacker_seq = randint(1000, 50000)
        global victim_seq
        victim_seq = randint(1000, 50000)

        for pkt_num, pkt in enumerate(exploit_raw_packets):
            eth_frame = Ether(pkt[0])
            ip_pkt = eth_frame.payload
            tcp_pkt = ip_pkt.payload
            str_tcp_seg = str(tcp_pkt.payload)

            # Clean payloads
            eth_frame.payload = b''
            ip_pkt.payload = b''
            tcp_pkt.payload = b''

            if pkt_num == 0:
                prev_orig_port_source = tcp_pkt.getfieldval("sport")
                orig_ip_dst = ip_pkt.getfieldval("dst")  # victim IP


            if tcp_pkt.getfieldval("dport") == 80 or tcp_pkt.getfieldval("sport") == 80:
                # Attacker --> vicitm
                if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP

                    # There are 363 TCP connections with different source ports, for each of them we generate random port
                    if tcp_pkt.getfieldval("sport") != prev_orig_port_source and tcp_pkt.getfieldval("dport") != 4444:
                        port_source = randint(self.minDefaultPort, self.maxDefaultPort)
                        prev_orig_port_source = tcp_pkt.getfieldval("sport")
                        # New connection, new random TCP sequence numbers
                        attacker_seq = randint(1000, 50000)
                        victim_seq = randint(1000, 50000)
                        # First packet in a connection has ACK = 0
                        tcp_pkt.setfieldval("ack", 0)

                    # 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)

                    str_tcp_seg = self.modify_payload(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host)

                    # TCP Seq, Ack
                    if tcp_pkt.getfieldval("ack") != 0:
                        tcp_pkt.setfieldval("ack", victim_seq)
                    tcp_pkt.setfieldval("seq", attacker_seq)
                    if not (tcp_pkt.getfieldval("flags") == 16 and len(str_tcp_seg) == 0):  # flags=A:
                        attacker_seq += max(len(str_tcp_seg), 1)

                    new_pkt = (eth_frame / ip_pkt/ tcp_pkt / str_tcp_seg)
                    new_pkt.time = timestamp_next_pkt

                    pps = max(getIntervalPPS(complement_interval_pps, timestamp_next_pkt), 10)
                    timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + float(timeSteps.random())

                # Victim --> attacker
                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)

                    str_tcp_seg = self.modify_payload(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host)

                    # TCP Seq, ACK
                    tcp_pkt.setfieldval("ack", attacker_seq)
                    tcp_pkt.setfieldval("seq", victim_seq)
                    strLen = len(str_tcp_seg)
                    if not (tcp_pkt.getfieldval("flags") == 16 and strLen == 0):  # flags=A:
                        victim_seq += max(strLen, 1)

                    new_pkt = (eth_frame / ip_pkt / tcp_pkt / str_tcp_seg)
                    timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + float(timeSteps.random())
                    new_pkt.time = timestamp_next_pkt

            # The last connection
            else:
                # New connection, new random TCP sequence numbers
                attacker_seq = randint(1000, 50000)
                victim_seq = randint(1000, 50000)
                # First packet in a connection has ACK = 0
                tcp_pkt.setfieldval("ack", 0)
                #port_source = randint(self.minDefaultPort, self.maxDefaultPort)

                # Attacker --> vicitm
                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)

                    str_tcp_seg = self.modify_payload(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host)

                    # TCP Seq, Ack
                    if tcp_pkt.getfieldval("ack") != 0:
                        tcp_pkt.setfieldval("ack", victim_seq)
                    tcp_pkt.setfieldval("seq", attacker_seq)
                    if not (tcp_pkt.getfieldval("flags") == 16 and len(str_tcp_seg) == 0):  # flags=A:
                        attacker_seq += max(len(str_tcp_seg), 1)

                    new_pkt = (eth_frame / ip_pkt / tcp_pkt / str_tcp_seg)
                    new_pkt.time = timestamp_next_pkt

                    pps = max(getIntervalPPS(complement_interval_pps, timestamp_next_pkt), 10)
                    timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + float(timeSteps.random())

                # Victim --> attacker
                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)

                    str_tcp_seg = self.modify_payload(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host)

                    # TCP Seq, ACK
                    tcp_pkt.setfieldval("ack", attacker_seq)
                    tcp_pkt.setfieldval("seq", victim_seq)
                    strLen = len(str_tcp_seg)
                    if not (tcp_pkt.getfieldval("flags") == 16 and strLen == 0):  # flags=A:
                        victim_seq += max(strLen, 1)

                    new_pkt = (eth_frame / ip_pkt / tcp_pkt / str_tcp_seg)
                    timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + 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