import importlib import sys import difflib import pkgutil import typing import Attack.AttackParameters as atkParam import Core.LabelManager as LabelManager import Core.Statistics as Statistics import ID2TLib.Label as Label import ID2TLib.PcapFile as PcapFile import ID2TLib.Utility as Util class AttackController: def __init__(self, pcap_file: PcapFile.PcapFile, statistics_class: Statistics, label_manager: LabelManager): """ Creates a new AttackController. The controller manages the attack injection, including the PCAP writing. :param pcap_file: The source .pcap file to run the attack on. :param statistics_class: A Statistics Object. :param label_manager: A LabelManager Object. """ self.statistics = statistics_class self.pcap_file = pcap_file self.label_mgr = label_manager self.current_attack = None self.added_attacks = [] self.seed = None self.total_packets = 0 self.additional_files = [] def set_seed(self, seed: int) -> None: """ Sets rng seed. :param seed: rng seed """ self.seed = seed def get_seed(self) -> typing.Union[int, None]: """ Gets rng seed. :return: The current rng seed """ return self.seed @staticmethod def choose_attack(input_name): """" Finds the attack best matching to input_name :param input_name: The name of the attack the user put in :return: The best matching attack in case one was found """ import Attack # Find all attacks, exclude some classes package = Attack available_attacks = [] for _, name, __ in pkgutil.iter_modules(package.__path__): if name != 'BaseAttack' and name != 'AttackParameters': available_attacks.append(name) highest_sim = 0.0 highest_sim_attack = None for attack in available_attacks: # Check if attack name is accurate if input_name == attack: return attack # Compares input with one of the available attacks # Makes comparison with lowercase version with generic endings removed # List of generic attack name endings can be found in ID2TLib.Utility counter_check = attack.lower() if not any(ending in input_name for ending in Util.generic_attack_names): counter_check = Util.remove_generic_ending(counter_check) similarity = difflib.SequenceMatcher(None, input_name.lower(), counter_check).ratio() # Exact match, return appropriate attack name if similarity == 1.0: return attack # Found more likely match if similarity > highest_sim: highest_sim = similarity highest_sim_attack = attack # Found no exactly matching attack name, print best match and exit if highest_sim >= 0.6: print('Found no attack of name ' + input_name + '. The closest match was ' + highest_sim_attack + '. Use ./id2t -l for a list of available attacks.') exit(1) # Found no reasonably matching attack name, recommend -l and exit else: print('Found no attack of name ' + input_name + ' or one similar to it.' ' Use ./id2t -l for an overview of available attacks.') exit(1) def create_attack(self, attack_name: str, seed=None): """ Creates dynamically a new class instance based on the given attack_name. :param attack_name: The name of the attack, must correspond to the attack's class name. :param seed: random seed for param generation :return: None """ print("\nCreating attack instance of \033[1m" + attack_name + "\033[0m") # Load attack class attack_module = importlib.import_module("Attack." + attack_name) attack_class = getattr(attack_module, attack_name) # Instantiate the desired attack self.current_attack = attack_class() # Initialize the parameters of the attack with defaults or user supplied values. self.current_attack.set_statistics(self.statistics) if seed is not None: self.current_attack.set_seed(seed=seed) self.current_attack.init_params() # Unset the user-specified-flag for all parameters set in init_params for k, v in self.current_attack.params.items(): self.current_attack.params[k] = self.current_attack.ValuePair(v.value, False) # Record the attack self.added_attacks.append(self.current_attack) def process_attack(self, attack: str, params: str, time=False): """ Takes as input the name of an attack (classname) and the attack parameters as string. Parses the string of attack parameters, creates the attack by writing the attack packets and returns the path of the written pcap. :param attack: The classname of the attack to inject. :param params: The parameters for attack customization, see attack class for supported params. :param time: Measure packet generation time or not. :return: The file path to the created pcap file. """ attack = self.choose_attack(attack) self.create_attack(attack, self.seed) print("Validating and adding attack parameters.") # Add attack parameters if provided params_dict = [] if isinstance(params, list) and params: # Convert attack param list into dictionary for entry in params: params_dict.append(entry.split('=')) params_dict = dict(params_dict) # Check if Parameter.INJECT_AT_TIMESTAMP and Parameter.INJECT_AFTER_PACKET are provided at the same time # if TRUE: delete Parameter.INJECT_AT_TIMESTAMP (lower priority) and use Parameter.INJECT_AFTER_PACKET if (atkParam.Parameter.INJECT_AFTER_PACKET.value in params_dict) and ( atkParam.Parameter.INJECT_AT_TIMESTAMP.value in params_dict): print("CONFLICT: Parameters", atkParam.Parameter.INJECT_AT_TIMESTAMP.value, "and", atkParam.Parameter.INJECT_AFTER_PACKET.value, "given at the same time. Ignoring", atkParam.Parameter.INJECT_AT_TIMESTAMP.value, "and using", atkParam.Parameter.INJECT_AFTER_PACKET.value, "instead to derive the timestamp.") del params_dict[atkParam.Parameter.INJECT_AT_TIMESTAMP.value] # Extract attack_note parameter, if not provided returns an empty string key_attack_note = "attack.note" attack_note = params_dict.get(key_attack_note, "") params_dict.pop(key_attack_note, None) # delete entry if found, otherwise return an empty string # Pass paramters to attack controller self.set_params(params_dict) else: attack_note = "This attack used only (random) default parameters." # Write attack into pcap file print("Generating attack packets...", end=" ") sys.stdout.flush() # force python to print text immediately if time: self.current_attack.set_start_time() self.current_attack.generate_attack_packets() if time: self.current_attack.set_finish_time() duration = self.current_attack.get_packet_generation_time() attack_result = self.current_attack.generate_attack_pcap() self.total_packets = attack_result[0] temp_attack_pcap_path = attack_result[1] if len(attack_result) == 3: # Extract the list of additional files, if available self.additional_files += attack_result[2] print("done. (total: " + str(self.total_packets) + " pkts", end="") if time: print(" in ", duration, " seconds", end="") print(".)") # Store label into LabelManager label = Label.Label(attack, self.get_attack_start_utime(), self.get_attack_end_utime(), self.total_packets, self.seed, self.current_attack.params, attack_note) self.label_mgr.add_labels(label) return temp_attack_pcap_path, duration def get_attack_start_utime(self): """ :return: The start time (timestamp of first packet) of the attack as unix timestamp. """ return self.current_attack.attack_start_utime def get_attack_end_utime(self): """ :return: The end time (timestamp of last packet) of the attack as unix timestamp. """ return self.current_attack.attack_end_utime def set_params(self, params: dict): """ Sets the attack's parameters. :param params: The parameters in a dictionary: {parameter_name: parameter_value} :return: None """ for param_key, param_value in params.items(): self.current_attack.add_param_value(param_key, param_value)