mirror of https://github.com/CIRCL/lookyloo
624 lines
24 KiB
Python
624 lines
24 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import hashlib
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import json
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import logging
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import re
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import socket
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import time
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from collections import defaultdict
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from datetime import date
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from pathlib import Path
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from typing import Any, Dict, Iterable, List, Optional, Set, Union
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import requests
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import vt # type: ignore
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from har2tree import CrawledTree, Har2TreeError, HostNode, URLNode
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from pyeupi import PyEUPI
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from pymisp import MISPAttribute, MISPEvent, PyMISP
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from pysanejs import SaneJS
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from vt.error import APIError # type: ignore
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from .exceptions import ConfigError
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from .helpers import (get_config, get_homedir, get_public_suffix_list,
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get_useragent_for_requests)
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class MISP():
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def __init__(self, config: Dict[str, Any]):
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self.logger = logging.getLogger(f'{self.__class__.__name__}')
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self.logger.setLevel(get_config('generic', 'loglevel'))
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if not config.get('apikey'):
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self.available = False
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self.logger.info('Module not enabled.')
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return
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self.available = True
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self.enable_lookup = False
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self.enable_push = False
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self.allow_auto_trigger = False
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try:
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self.client = PyMISP(url=config['url'], key=config['apikey'],
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ssl=config['verify_tls_cert'], timeout=config['timeout'])
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except Exception as e:
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self.available = False
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self.logger.warning(f'Unable to connect to MISP: {e}')
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return
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if config.get('enable_lookup'):
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self.enable_lookup = True
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if config.get('enable_push'):
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self.enable_push = True
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if config.get('allow_auto_trigger'):
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self.allow_auto_trigger = True
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self.default_tags: List[str] = config.get('default_tags') # type: ignore
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self.auto_publish = config.get('auto_publish')
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self.storage_dir_misp = get_homedir() / 'misp'
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self.storage_dir_misp.mkdir(parents=True, exist_ok=True)
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self.psl = get_public_suffix_list()
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def get_fav_tags(self):
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return self.client.tags(pythonify=True, favouritesOnly=1)
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def _prepare_push(self, to_push: Union[List[MISPEvent], MISPEvent], allow_duplicates: bool=False, auto_publish: Optional[bool]=False) -> Union[List[MISPEvent], Dict]:
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'''Adds the pre-configured information as required by the instance.
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If duplicates aren't allowed, they will be automatically skiped and the
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extends_uuid key in the next element in the list updated'''
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if isinstance(to_push, MISPEvent):
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events = [to_push]
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else:
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events = to_push
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events_to_push = []
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existing_uuid_to_extend = None
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for event in events:
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if not allow_duplicates:
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existing_event = self.get_existing_event(event.attributes[0].value)
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if existing_event:
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existing_uuid_to_extend = existing_event.uuid
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continue
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if existing_uuid_to_extend:
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event.extends_uuid = existing_uuid_to_extend
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existing_uuid_to_extend = None
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for tag in self.default_tags:
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event.add_tag(tag)
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if auto_publish:
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event.publish()
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events_to_push.append(event)
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return events_to_push
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def push(self, to_push: Union[List[MISPEvent], MISPEvent], allow_duplicates: bool=False, auto_publish: Optional[bool]=None) -> Union[List[MISPEvent], Dict]:
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if auto_publish is None:
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auto_publish = self.auto_publish
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if self.available and self.enable_push:
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events = self._prepare_push(to_push, allow_duplicates, auto_publish)
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if not events:
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return {'error': 'All the events are already on the MISP instance.'}
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if isinstance(events, Dict):
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return {'error': events}
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to_return = []
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for event in events:
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new_event = self.client.add_event(event, pythonify=True)
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if isinstance(new_event, MISPEvent):
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to_return.append(new_event)
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else:
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return {'error': new_event}
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return to_return
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else:
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return {'error': 'Module not available or push not enabled.'}
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def get_existing_event_url(self, permaurl: str) -> Optional[str]:
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attributes = self.client.search('attributes', value=permaurl, limit=1, page=1, pythonify=True)
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if not attributes or not isinstance(attributes[0], MISPAttribute):
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return None
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url = f'{self.client.root_url}/events/{attributes[0].event_id}'
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return url
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def get_existing_event(self, permaurl: str) -> Optional[MISPEvent]:
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attributes = self.client.search('attributes', value=permaurl, limit=1, page=1, pythonify=True)
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if not attributes or not isinstance(attributes[0], MISPAttribute):
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return None
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event = self.client.get_event(attributes[0].event_id, pythonify=True)
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if isinstance(event, MISPEvent):
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return event
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return None
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def lookup(self, node: URLNode, hostnode: HostNode) -> Union[Dict[str, Set[str]], Dict[str, Any]]:
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if self.available and self.enable_lookup:
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tld = self.psl.get_tld(hostnode.name)
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domain = re.sub(f'.{tld}$', '', hostnode.name).split('.')[-1]
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to_lookup = [node.name, hostnode.name, f'{domain}.{tld}'] + hostnode.resolved_ips
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if hasattr(hostnode, 'cnames'):
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to_lookup += hostnode.cnames
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if not node.empty_response:
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to_lookup.append(node.body_hash)
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if attributes := self.client.search(controller='attributes', value=to_lookup,
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enforce_warninglist=True, pythonify=True):
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if isinstance(attributes, list):
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to_return: Dict[str, Set[str]] = defaultdict(set)
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# NOTE: We have MISPAttribute in that list
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for a in attributes:
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to_return[a.event_id].add(a.value) # type: ignore
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return to_return
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else:
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# The request returned an error
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return attributes # type: ignore
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return {'info': 'No hits.'}
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else:
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return {'error': 'Module not available or lookup not enabled.'}
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class UniversalWhois():
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def __init__(self, config: Dict[str, Any]):
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self.logger = logging.getLogger(f'{self.__class__.__name__}')
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self.logger.setLevel(get_config('generic', 'loglevel'))
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if not config.get('enabled'):
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self.available = False
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self.logger.info('Module not enabled.')
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return
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self.server = config.get('ipaddress')
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self.port = config.get('port')
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self.allow_auto_trigger = False
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if config.get('allow_auto_trigger'):
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self.allow_auto_trigger = True
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try:
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
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sock.connect((self.server, self.port))
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except Exception as e:
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self.available = False
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self.logger.warning(f'Unable to connect to uwhois ({self.server}:{self.port}): {e}')
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return
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self.available = True
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def query_whois_hostnode(self, hostnode: HostNode) -> None:
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if hasattr(hostnode, 'resolved_ips'):
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for ip in hostnode.resolved_ips:
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self.whois(ip)
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if hasattr(hostnode, 'cnames'):
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for cname in hostnode.cnames:
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self.whois(cname)
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self.whois(hostnode.name)
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def capture_default_trigger(self, crawled_tree: CrawledTree, /, *, force: bool=False, auto_trigger: bool=False) -> None:
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'''Run the module on all the nodes up to the final redirect'''
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if not self.available:
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return None
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if auto_trigger and not self.allow_auto_trigger:
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return None
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try:
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hostnode = crawled_tree.root_hartree.get_host_node_by_uuid(crawled_tree.root_hartree.rendered_node.hostnode_uuid)
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except Har2TreeError as e:
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self.logger.warning(e)
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else:
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self.query_whois_hostnode(hostnode)
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for n in hostnode.get_ancestors():
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self.query_whois_hostnode(n)
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def whois(self, query: str) -> str:
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if not self.available:
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return ''
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bytes_whois = b''
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
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sock.connect((self.server, self.port))
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sock.sendall('{}\n'.format(query).encode())
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while True:
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data = sock.recv(2048)
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if not data:
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break
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bytes_whois += data
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to_return = bytes_whois.decode()
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return to_return
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class SaneJavaScript():
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def __init__(self, config: Dict[str, Any]):
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self.logger = logging.getLogger(f'{self.__class__.__name__}')
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self.logger.setLevel(get_config('generic', 'loglevel'))
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if not config.get('enabled'):
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self.available = False
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self.logger.info('Module not enabled.')
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return
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self.client = SaneJS()
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if not self.client.is_up:
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self.available = False
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return
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self.available = True
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self.allow_auto_trigger = False
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if config.get('allow_auto_trigger'):
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self.allow_auto_trigger = True
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self.storage_dir = get_homedir() / 'sanejs'
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self.storage_dir.mkdir(parents=True, exist_ok=True)
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def hashes_lookup(self, sha512: Union[Iterable[str], str], force: bool=False) -> Dict[str, List[str]]:
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if isinstance(sha512, str):
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hashes: Iterable[str] = [sha512]
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else:
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hashes = sha512
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today_dir = self.storage_dir / date.today().isoformat()
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today_dir.mkdir(parents=True, exist_ok=True)
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sanejs_unknowns = today_dir / 'unknown'
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unknown_hashes = set()
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if sanejs_unknowns.exists():
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with sanejs_unknowns.open() as f:
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unknown_hashes = set(line.strip() for line in f.readlines())
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to_return: Dict[str, List[str]] = {}
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if force:
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to_lookup = hashes
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else:
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to_lookup = [h for h in hashes if (h not in unknown_hashes
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and not (today_dir / h).exists())]
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has_new_unknown = False
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for h in to_lookup:
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try:
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response = self.client.sha512(h)
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except Exception as e:
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self.logger.warning(f'Something went wrong. Query: {h} - {e}')
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continue
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if 'error' in response:
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# Server not ready
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break
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if 'response' in response and response['response']:
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cached_path = today_dir / h
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with cached_path.open('w') as f:
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json.dump(response['response'], f)
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to_return[h] = response['response']
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else:
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has_new_unknown = True
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unknown_hashes.add(h)
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for h in hashes:
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cached_path = today_dir / h
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if h in unknown_hashes or h in to_return:
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continue
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elif cached_path.exists():
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with cached_path.open() as f:
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to_return[h] = json.load(f)
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if has_new_unknown:
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with sanejs_unknowns.open('w') as f:
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f.writelines(f'{h}\n' for h in unknown_hashes)
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return to_return
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class PhishingInitiative():
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def __init__(self, config: Dict[str, Any]):
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if not config.get('apikey'):
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self.available = False
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return
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self.available = True
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self.autosubmit = False
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self.allow_auto_trigger = False
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self.client = PyEUPI(config['apikey'])
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if config.get('allow_auto_trigger'):
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self.allow_auto_trigger = True
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if config.get('autosubmit'):
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self.autosubmit = True
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self.storage_dir_eupi = get_homedir() / 'eupi'
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self.storage_dir_eupi.mkdir(parents=True, exist_ok=True)
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def __get_cache_directory(self, url: str) -> Path:
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m = hashlib.md5()
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m.update(url.encode())
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return self.storage_dir_eupi / m.hexdigest()
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def get_url_lookup(self, url: str) -> Optional[Dict[str, Any]]:
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url_storage_dir = self.__get_cache_directory(url)
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if not url_storage_dir.exists():
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return None
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cached_entries = sorted(url_storage_dir.glob('*'), reverse=True)
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if not cached_entries:
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return None
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with cached_entries[0].open() as f:
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return json.load(f)
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def capture_default_trigger(self, crawled_tree: CrawledTree, /, *, force: bool=False, auto_trigger: bool=False) -> Dict:
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'''Run the module on all the nodes up to the final redirect'''
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if not self.available:
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return {'error': 'Module not available'}
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if auto_trigger and not self.allow_auto_trigger:
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return {'error': 'Auto trigger not allowed on module'}
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if crawled_tree.redirects:
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for redirect in crawled_tree.redirects:
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self.url_lookup(redirect, force)
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else:
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self.url_lookup(crawled_tree.root_hartree.har.root_url, force)
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return {'success': 'Module triggered'}
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def url_lookup(self, url: str, force: bool=False) -> None:
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'''Lookup an URL on Phishing Initiative
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Note: force means 2 things:
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* (re)scan of the URL
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* re fetch the object from Phishing Initiative even if we already did it today
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Note: the URL will only be sent for scan if autosubmit is set to true in the config
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'''
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if not self.available:
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raise ConfigError('PhishingInitiative not available, probably no API key')
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url_storage_dir = self.__get_cache_directory(url)
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url_storage_dir.mkdir(parents=True, exist_ok=True)
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pi_file = url_storage_dir / date.today().isoformat()
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scan_requested = False
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if self.autosubmit and force:
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self.client.post_submission(url, comment='Received on Lookyloo')
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scan_requested = True
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if not force and pi_file.exists():
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return
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for _ in range(3):
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url_information = self.client.lookup(url)
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if not url_information['results']:
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# No results, that should not happen (?)
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break
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if url_information['results'][0]['tag'] == -1:
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# Not submitted
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if not self.autosubmit:
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break
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if not scan_requested:
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self.client.post_submission(url, comment='Received on Lookyloo')
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scan_requested = True
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time.sleep(1)
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else:
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with pi_file.open('w') as _f:
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json.dump(url_information, _f)
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break
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class VirusTotal():
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def __init__(self, config: Dict[str, Any]):
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if not config.get('apikey'):
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self.available = False
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return
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self.available = True
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self.autosubmit = False
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self.allow_auto_trigger = False
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self.client = vt.Client(config['apikey'])
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if config.get('allow_auto_trigger'):
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self.allow_auto_trigger = True
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if config.get('autosubmit'):
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self.autosubmit = True
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self.storage_dir_vt = get_homedir() / 'vt_url'
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self.storage_dir_vt.mkdir(parents=True, exist_ok=True)
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def __get_cache_directory(self, url: str) -> Path:
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url_id = vt.url_id(url)
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m = hashlib.md5()
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m.update(url_id.encode())
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return self.storage_dir_vt / m.hexdigest()
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def get_url_lookup(self, url: str) -> Optional[Dict[str, Any]]:
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url_storage_dir = self.__get_cache_directory(url)
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if not url_storage_dir.exists():
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return None
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cached_entries = sorted(url_storage_dir.glob('*'), reverse=True)
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if not cached_entries:
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return None
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with cached_entries[0].open() as f:
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return json.load(f)
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def capture_default_trigger(self, crawled_tree: CrawledTree, /, *, force: bool=False, auto_trigger: bool=False) -> Dict:
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'''Run the module on all the nodes up to the final redirect'''
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if not self.available:
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return {'error': 'Module not available'}
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if auto_trigger and not self.allow_auto_trigger:
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return {'error': 'Auto trigger not allowed on module'}
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if crawled_tree.redirects:
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for redirect in crawled_tree.redirects:
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self.url_lookup(redirect, force)
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else:
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self.url_lookup(crawled_tree.root_hartree.har.root_url, force)
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return {'success': 'Module triggered'}
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def url_lookup(self, url: str, force: bool=False) -> None:
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'''Lookup an URL on VT
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Note: force means 2 things:
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* (re)scan of the URL
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* re fetch the object from VT even if we already did it today
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Note: the URL will only be sent for scan if autosubmit is set to true in the config
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'''
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if not self.available:
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raise ConfigError('VirusTotal not available, probably no API key')
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url_storage_dir = self.__get_cache_directory(url)
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url_storage_dir.mkdir(parents=True, exist_ok=True)
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vt_file = url_storage_dir / date.today().isoformat()
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scan_requested = False
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if self.autosubmit and force:
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self.client.scan_url(url)
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scan_requested = True
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if not force and vt_file.exists():
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return
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url_id = vt.url_id(url)
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for _ in range(3):
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try:
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url_information = self.client.get_object(f"/urls/{url_id}")
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with vt_file.open('w') as _f:
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json.dump(url_information.to_dict(), _f)
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break
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except APIError as e:
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if not self.autosubmit:
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break
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if not scan_requested and e.code == 'NotFoundError':
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self.client.scan_url(url)
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scan_requested = True
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time.sleep(5)
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class UrlScan():
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def __init__(self, config: Dict[str, Any]):
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self.logger = logging.getLogger(f'{self.__class__.__name__}')
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self.logger.setLevel(get_config('generic', 'loglevel'))
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if not config.get('apikey'):
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self.available = False
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return
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self.available = True
|
|
self.autosubmit = False
|
|
self.allow_auto_trigger = False
|
|
self.client = requests.session()
|
|
self.client.headers['User-Agent'] = get_useragent_for_requests()
|
|
self.client.headers['API-Key'] = config['apikey']
|
|
self.client.headers['Content-Type'] = 'application/json'
|
|
|
|
if config.get('allow_auto_trigger'):
|
|
self.allow_auto_trigger = True
|
|
|
|
if config.get('autosubmit'):
|
|
self.autosubmit = True
|
|
|
|
if config.get('force_visibility'):
|
|
# Cases:
|
|
# 1. False: unlisted for hidden captures / public for others
|
|
# 2. "key": default visibility defined on urlscan.io
|
|
# 3. "public", "unlisted", "private": is set for all submissions
|
|
self.force_visibility = config['force_visibility']
|
|
else:
|
|
self.force_visibility = False
|
|
|
|
if self.force_visibility not in [False, 'key', 'public', 'unlisted', 'private']:
|
|
self.logger.warning("Invalid value for force_visibility, default to False (unlisted for hidden captures / public for others).")
|
|
self.force_visibility = False
|
|
|
|
self.storage_dir_urlscan = get_homedir() / 'urlscan'
|
|
self.storage_dir_urlscan.mkdir(parents=True, exist_ok=True)
|
|
|
|
def __get_cache_directory(self, url: str, useragent: str, referer: str) -> Path:
|
|
m = hashlib.md5()
|
|
to_hash = f'{url}{useragent}{referer}'
|
|
m.update(to_hash.encode())
|
|
return self.storage_dir_urlscan / m.hexdigest()
|
|
|
|
def get_url_submission(self, capture_info: Dict[str, Any]) -> Optional[Dict[str, Any]]:
|
|
url_storage_dir = self.__get_cache_directory(capture_info['url'],
|
|
capture_info['user_agent'],
|
|
capture_info['referer']) / 'submit'
|
|
if not url_storage_dir.exists():
|
|
return None
|
|
cached_entries = sorted(url_storage_dir.glob('*'), reverse=True)
|
|
if not cached_entries:
|
|
return None
|
|
|
|
with cached_entries[0].open() as f:
|
|
return json.load(f)
|
|
|
|
def capture_default_trigger(self, capture_info: Dict[str, Any], /, visibility: str, *, force: bool=False, auto_trigger: bool=False) -> Dict:
|
|
'''Run the module on the initial URL'''
|
|
if not self.available:
|
|
return {'error': 'Module not available'}
|
|
if auto_trigger and not self.allow_auto_trigger:
|
|
# NOTE: if auto_trigger is true, it means the request comes from the
|
|
# auto trigger feature (disabled by default)
|
|
# Each module can disable auto-trigger to avoid depleating the
|
|
# API limits.
|
|
return {'error': 'Auto trigger not allowed on module'}
|
|
|
|
self.url_submit(capture_info, visibility, force)
|
|
return {'success': 'Module triggered'}
|
|
|
|
def __submit_url(self, url: str, useragent: str, referer: str, visibility: str) -> Dict:
|
|
data = {'customagent': useragent, 'referer': referer}
|
|
|
|
if not url.startswith('http'):
|
|
url = f'http://{url}'
|
|
data['url'] = url
|
|
|
|
if self.force_visibility is False:
|
|
data["visibility"] = visibility
|
|
elif self.force_visibility in ["public", "unlisted", "private"]:
|
|
data["visibility"] = self.force_visibility
|
|
else:
|
|
# default to key config on urlscan.io website
|
|
pass
|
|
response = self.client.post('https://urlscan.io/api/v1/scan/', json=data)
|
|
response.raise_for_status()
|
|
return response.json()
|
|
|
|
def __url_result(self, uuid: str) -> Dict:
|
|
response = self.client.get(f'https://urlscan.io/api/v1/result/{uuid}')
|
|
response.raise_for_status()
|
|
return response.json()
|
|
|
|
def url_submit(self, capture_info: Dict[str, Any], visibility: str, force: bool=False) -> Dict:
|
|
'''Lookup an URL on urlscan.io
|
|
Note: force means 2 things:
|
|
* (re)scan of the URL
|
|
* re-fetch the object from urlscan.io even if we already did it today
|
|
|
|
Note: the URL will only be submitted if autosubmit is set to true in the config
|
|
'''
|
|
if not self.available:
|
|
raise ConfigError('UrlScan not available, probably no API key')
|
|
|
|
url_storage_dir = self.__get_cache_directory(capture_info['url'],
|
|
capture_info['user_agent'],
|
|
capture_info['referer']) / 'submit'
|
|
url_storage_dir.mkdir(parents=True, exist_ok=True)
|
|
urlscan_file_submit = url_storage_dir / date.today().isoformat()
|
|
|
|
if urlscan_file_submit.exists():
|
|
if not force:
|
|
with urlscan_file_submit.open('r') as _f:
|
|
return json.load(_f)
|
|
elif self.autosubmit:
|
|
# submit is allowed and we either force it, or it's just allowed
|
|
try:
|
|
response = self.__submit_url(capture_info['url'],
|
|
capture_info['user_agent'],
|
|
capture_info['referer'],
|
|
visibility)
|
|
except requests.exceptions.HTTPError as e:
|
|
return {'error': e}
|
|
with urlscan_file_submit.open('w') as _f:
|
|
json.dump(response, _f)
|
|
return response
|
|
return {'error': 'Submitting is not allowed by the configuration'}
|
|
|
|
def url_result(self, capture_info: Dict[str, Any]):
|
|
'''Get the result from a submission.'''
|
|
submission = self.get_url_submission(capture_info)
|
|
if submission and 'uuid' in submission:
|
|
uuid = submission['uuid']
|
|
if (self.storage_dir_urlscan / f'{uuid}.json').exists():
|
|
with (self.storage_dir_urlscan / f'{uuid}.json').open() as _f:
|
|
return json.load(_f)
|
|
try:
|
|
result = self.__url_result(uuid)
|
|
except requests.exceptions.HTTPError as e:
|
|
return {'error': e}
|
|
with (self.storage_dir_urlscan / f'{uuid}.json').open('w') as _f:
|
|
json.dump(result, _f)
|
|
return result
|
|
return {'error': 'Submission incomplete or unavailable.'}
|