mirror of https://github.com/MISP/PyMISP
676 lines
27 KiB
Python
676 lines
27 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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""" Python API using the REST interface of MISP """
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import json
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import datetime
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import os
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import base64
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import re
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try:
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from urllib.parse import urljoin
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except ImportError:
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from urlparse import urljoin
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from io import BytesIO
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import zipfile
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import warnings
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import functools
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try:
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import requests
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HAVE_REQUESTS = True
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except ImportError:
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HAVE_REQUESTS = False
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from . import __version__
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# Least dirty way to support python 2 and 3
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try:
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basestring
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except NameError:
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basestring = str
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class PyMISPError(Exception):
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def __init__(self, message):
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super(PyMISPError, self).__init__(message)
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self.message = message
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class NewEventError(PyMISPError):
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pass
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class NewAttributeError(PyMISPError):
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pass
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class MissingDependency(PyMISPError):
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pass
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def deprecated(func):
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'''This is a decorator which can be used to mark functions
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as deprecated. It will result in a warning being emitted
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when the function is used.'''
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@functools.wraps(func)
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def new_func(*args, **kwargs):
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warnings.warn_explicit(
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"Call to deprecated function {}.".format(func.__name__),
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category=DeprecationWarning,
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filename=func.__code__.co_filename,
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lineno=func.__code__.co_firstlineno + 1
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)
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return func(*args, **kwargs)
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return new_func
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class PyMISP(object):
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"""
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Python API for MISP
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:param url: URL of the MISP instance you want to connect to
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:param key: API key of the user you want to use
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:param ssl: can be True or False (to check ot not the validity
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of the certificate. Or a CA_BUNDLE in case of self
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signed certiifcate (the concatenation of all the
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*.crt of the chain)
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:param out_type: Type of object (json or xml)
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"""
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def __init__(self, url, key, ssl=True, out_type='json'):
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self.root_url = url
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self.key = key
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self.ssl = ssl
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self.out_type = out_type
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self.categories = ['Internal reference', 'Targeting data', 'Antivirus detection',
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'Payload delivery', 'Payload installation', 'Artifacts dropped',
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'Persistence mechanism', 'Network activity', 'Payload type',
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'Attribution', 'External analysis', 'Other']
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self.types = ['md5', 'sha1', 'sha256', 'filename', 'filename|md5', 'filename|sha1',
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'filename|sha256', 'ip-src', 'ip-dst', 'hostname', 'domain', 'url',
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'user-agent', 'http-method', 'regkey', 'regkey|value', 'AS', 'snort',
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'pattern-in-file', 'pattern-in-traffic', 'pattern-in-memory', 'named pipe', 'mutex',
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'vulnerability', 'attachment', 'malware-sample', 'link', 'comment', 'text', 'other']
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def __prepare_session(self, force_out=None):
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"""
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Prepare the headers of the session
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:param force_out: force the type of the expect output
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(overwrite the constructor)
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"""
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if not HAVE_REQUESTS:
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raise MissingDependency('Missing dependency, install requests (`pip install requests`)')
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if force_out is not None:
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out = force_out
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else:
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out = self.out_type
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session = requests.Session()
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session.verify = self.ssl
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session.headers.update(
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{'Authorization': self.key,
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'Accept': 'application/' + out,
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'content-type': 'application/' + out})
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return session
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def __query(self, session, path, query):
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if query.get('error') is not None:
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return query
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url = urljoin(self.root_url, 'events/{}'.format(path.lstrip('/')))
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query = {'request': query}
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r = session.post(url, data=json.dumps(query))
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return r.json()
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# ################################################
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# ############### Simple REST API ################
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# ################################################
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def get_index(self):
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"""
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Return the index.
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Warning, there's a limit on the number of results
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"""
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events')
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return session.get(url)
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def get_event(self, event_id):
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"""
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Get an event
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:param event_id: Event id to get
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"""
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events/{}'.format(event_id))
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return session.get(url)
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def add_event(self, event):
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"""
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Add a new event
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:param event: Event as JSON object / string or XML to add
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"""
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events')
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if self.out_type == 'json':
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if isinstance(event, basestring):
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return session.post(url, data=event)
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else:
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return session.post(url, data=json.dumps(event))
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else:
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return session.post(url, data=event)
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def update_event(self, event_id, event):
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"""
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Update an event
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:param event_id: Event id to update
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:param event: Event as JSON object / string or XML to add
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"""
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events/{}'.format(event_id))
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if self.out_type == 'json':
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if isinstance(event, basestring):
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return session.post(url, data=event)
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else:
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return session.post(url, data=json.dumps(event))
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else:
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return session.post(url, data=event)
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def delete_event(self, event_id):
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"""
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Delete an event
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:param event_id: Event id to delete
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"""
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events/{}'.format(event_id))
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return session.delete(url)
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def delete_attribute(self, attribute_id):
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'attributes/{}'.format(attribute_id))
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return session.delete(url)
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# ##############################################
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# ######### Event handling (Json only) #########
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# ##############################################
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def _prepare_full_event(self, distribution, threat_level_id, analysis, info, date=None, published=False):
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to_return = {'Event': {}}
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# Setup details of a new event
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if distribution not in [0, 1, 2, 3]:
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raise NewEventError('{} is invalid, the distribution has to be in 0, 1, 2, 3'.format(distribution))
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if threat_level_id not in [1, 2, 3, 4]:
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raise NewEventError('{} is invalid, the threat_level_id has to be in 1, 2, 3, 4'.format(threat_level_id))
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if analysis not in [0, 1, 2]:
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raise NewEventError('{} is invalid, the analysis has to be in 0, 1, 2'.format(analysis))
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if date is None:
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date = datetime.date.today().isoformat()
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if published not in [True, False]:
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raise NewEventError('{} is invalid, published has to be True or False'.format(published))
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to_return['Event'] = {'distribution': distribution, 'info': info, 'date': date, 'published': published,
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'threat_level_id': threat_level_id, 'analysis': analysis}
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return to_return
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def _prepare_full_attribute(self, category, type_value, value, to_ids, comment=None, distribution=None):
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to_return = {}
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if category not in self.categories:
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raise NewAttributeError('{} is invalid, category has to be in {}'.format(category, (', '.join(self.categories))))
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to_return['category'] = category
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if type_value not in self.types:
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raise NewAttributeError('{} is invalid, type_value has to be in {}'.format(type_value, (', '.join(self.types))))
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to_return['type'] = type_value
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if to_ids not in [True, False]:
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raise NewAttributeError('{} is invalid, to_ids has to be True or False'.format(to_ids))
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to_return['to_ids'] = to_ids
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if distribution is not None:
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distribution = int(distribution)
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# If None: take the default value of the event
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if distribution not in [None, 0, 1, 2, 3]:
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raise NewAttributeError('{} is invalid, the distribution has to be in 0, 1, 2, 3 or None'.format(distribution))
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if distribution is not None:
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to_return['distribution'] = distribution
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to_return['value'] = value
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if comment is not None:
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to_return['comment'] = comment
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return to_return
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def _prepare_update(self, event):
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# Cleanup the received event to make it publishable
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event['Event'].pop('locked', None)
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event['Event'].pop('attribute_count', None)
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event['Event'].pop('RelatedEvent', None)
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event['Event'].pop('orgc', None)
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event['Event'].pop('ShadowAttribute', None)
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event['Event'].pop('org', None)
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event['Event'].pop('proposal_email_lock', None)
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event['Event'].pop('publish_timestamp', None)
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event['Event'].pop('published', None)
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event['Event'].pop('timestamp', None)
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event['Event']['id'] = int(event['Event']['id'])
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return event
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# ########## Helpers ##########
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def new_event(self, distribution=None, threat_level_id=None, analysis=None, info=None, date=None, published=False):
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data = self._prepare_full_event(distribution, threat_level_id, analysis, info, date, published)
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response = self.add_event(data)
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return response.json()
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def publish(self, event):
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if event['Event']['published']:
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return {'message': 'Already published'}
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event = self._prepare_update(event)
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event['Event']['published'] = True
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response = self.update_event(event['Event']['id'], event)
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return response.json()
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# ##### File attributes #####
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def _send_attributes(self, event, attributes):
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event = self._prepare_update(event)
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for a in attributes:
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if a.get('distribution') is None:
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a['distribution'] = event['Event']['distribution']
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event['Event']['Attribute'] = attributes
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response = self.update_event(event['Event']['id'], event)
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return response.json()
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def add_hashes(self, event, category='Artifacts dropped', filename=None, md5=None, sha1=None, sha256=None, comment=None, to_ids=True, distribution=None):
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categories = ['Payload delivery', 'Artifacts dropped', 'Payload Installation', 'External Analysis']
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if category not in categories:
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raise NewAttributeError('{} is invalid, category has to be in {}'.format(category, (', '.join(categories))))
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attributes = []
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type_value = '{}'
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value = '{}'
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if filename:
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type_value = 'filename|{}'
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value = filename + '|{}'
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if md5:
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attributes.append(self._prepare_full_attribute(category, type_value.format('md5'), value.format(md5),
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to_ids, comment, distribution))
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if sha1:
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attributes.append(self._prepare_full_attribute(category, type_value.format('sha1'), value.format(sha1),
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to_ids, comment, distribution))
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if sha256:
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attributes.append(self._prepare_full_attribute(category, type_value.format('sha256'), value.format(sha256),
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to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_regkey(self, event, regkey, rvalue=None, category='Artifacts dropped', to_ids=True, comment=None, distribution=None):
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type_value = '{}'
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value = '{}'
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if rvalue:
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type_value = 'regkey|value'
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value = '{}|{}'.format(regkey, rvalue)
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else:
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type_value = 'regkey'
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value = regkey
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attributes = []
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attributes.append(self._prepare_full_attribute(category, type_value, value, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_pattern(self, event, pattern, in_file=True, in_memory=False, category='Artifacts dropped', to_ids=True, comment=None, distribution=None):
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attributes = []
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if in_file:
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attributes.append(self._prepare_full_attribute(category, 'pattern-in-file', pattern, to_ids, comment, distribution))
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if in_memory:
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attributes.append(self._prepare_full_attribute(category, 'pattern-in-memory', pattern, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_pipe(self, event, named_pipe, category='Artifacts dropped', to_ids=True, comment=None, distribution=None):
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attributes = []
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if not named_pipe.startswith('\\.\\pipe\\'):
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named_pipe = '\\.\\pipe\\{}'.format(named_pipe)
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attributes.append(self._prepare_full_attribute(category, 'named pipe', named_pipe, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_mutex(self, event, mutex, category='Artifacts dropped', to_ids=True, comment=None, distribution=None):
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attributes = []
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if not mutex.startswith('\\BaseNamedObjects\\'):
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mutex = '\\BaseNamedObjects\\{}'.format(mutex)
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attributes.append(self._prepare_full_attribute(category, 'mutex', mutex, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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# ##### Network attributes #####
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def add_ipdst(self, event, ipdst, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'ip-dst', ipdst, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_hostname(self, event, hostname, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'hostname', hostname, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_domain(self, event, domain, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'domain', domain, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_url(self, event, url, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'url', url, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_useragent(self, event, useragent, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'user-agent', useragent, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_traffic_pattern(self, event, pattern, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'pattern-in-traffic', pattern, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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def add_snort(self, event, snort, category='Network activity', to_ids=True, comment=None, distribution=None):
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attributes = []
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attributes.append(self._prepare_full_attribute(category, 'snort', snort, to_ids, comment, distribution))
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return self._send_attributes(event, attributes)
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# ##################################################
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# ######### Upload samples through the API #########
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# ##################################################
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def _create_event(self, distribution, threat_level_id, analysis, info):
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# Setup details of a new event
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if distribution not in [0, 1, 2, 3]:
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raise NewEventError('{} is invalid, the distribution has to be in 0, 1, 2, 3'.format(distribution))
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if threat_level_id not in [0, 1, 2, 3]:
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raise NewEventError('{} is invalid, the threat_level_id has to be in 0, 1, 2, 3'.format(threat_level_id))
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if analysis not in [0, 1, 2]:
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raise NewEventError('{} is invalid, the analysis has to be in 0, 1, 2'.format(analysis))
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return {'distribution': int(distribution), 'info': info,
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'threat_level_id': int(threat_level_id), 'analysis': analysis}
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def prepare_attribute(self, event_id, distribution, to_ids, category, info,
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analysis, threat_level_id):
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to_post = {'request': {}}
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authorized_categs = ['Payload delivery', 'Artifacts dropped', 'Payload Installation', 'External Analysis']
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if event_id is not None:
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try:
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event_id = int(event_id)
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except:
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pass
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if not isinstance(event_id, int):
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# New event
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to_post['request'] = self._create_event(distribution, threat_level_id, analysis, info)
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else:
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to_post['request']['event_id'] = int(event_id)
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if to_ids not in [True, False]:
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raise NewAttributeError('{} is invalid, to_ids has to be True or False'.format(to_ids))
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to_post['request']['to_ids'] = to_ids
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if category not in authorized_categs:
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raise NewAttributeError('{} is invalid, category has to be in {}'.format(category, (', '.join(authorized_categs))))
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to_post['request']['category'] = category
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return to_post
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def _encode_file_to_upload(self, path):
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with open(path, 'rb') as f:
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return base64.b64encode(f.read())
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def upload_sample(self, filename, filepath, event_id, distribution, to_ids,
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category, info, analysis, threat_level_id):
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to_post = self.prepare_attribute(event_id, distribution, to_ids, category,
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info, analysis, threat_level_id)
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to_post['request']['files'] = [{'filename': filename, 'data': self._encode_file_to_upload(filepath)}]
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return self._upload_sample(to_post)
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def upload_samplelist(self, filepaths, event_id, distribution, to_ids, category,
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info, analysis, threat_level_id):
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to_post = self.prepare_attribute(event_id, distribution, to_ids, category,
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info, analysis, threat_level_id)
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files = []
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for path in filepaths:
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if not os.path.isfile(path):
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continue
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files.append({'filename': os.path.basename(path), 'data': self._encode_file_to_upload(path)})
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to_post['request']['files'] = files
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return self._upload_sample(to_post)
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def _upload_sample(self, to_post):
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session = self.__prepare_session()
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url = urljoin(self.root_url, 'events/upload_sample')
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return session.post(url, data=json.dumps(to_post))
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# ##############################
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# ######## REST Search #########
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# ##############################
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def search_all(self, value):
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query = {'value': value, 'searchall': 1}
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session = self.__prepare_session()
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return self.__query(session, 'restSearch/download', query)
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def __prepare_rest_search(self, values, not_values):
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"""
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Prepare a search, generate the chain processed by the server
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:param values: Values to search
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:param not_values: Values that should not be in the response
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"""
|
|
to_return = ''
|
|
if values is not None:
|
|
if not isinstance(values, list):
|
|
to_return += values
|
|
else:
|
|
to_return += '&&'.join(values)
|
|
if not_values is not None:
|
|
if len(to_return) > 0:
|
|
to_return += '&&!'
|
|
else:
|
|
to_return += '!'
|
|
if not isinstance(values, list):
|
|
to_return += not_values
|
|
else:
|
|
to_return += '&&!'.join(not_values)
|
|
return to_return
|
|
|
|
def search(self, values=None, not_values=None, type_attribute=None,
|
|
category=None, org=None, tags=None, not_tags=None, date_from=None,
|
|
date_to=None, last=None):
|
|
"""
|
|
Search via the Rest API
|
|
|
|
:param values: values to search for
|
|
:param not_values: values *not* to search for
|
|
:param type_attribute: Type of attribute
|
|
:param category: Category to search
|
|
:param org: Org reporting the event
|
|
:param tags: Tags to search for
|
|
:param not_tags: Tags *not* to search for
|
|
:param date_from: First date
|
|
:param date_to: Last date
|
|
:param last: Last updated events (for example 5d or 12h or 30m)
|
|
|
|
"""
|
|
val = self.__prepare_rest_search(values, not_values).replace('/', '|')
|
|
tag = self.__prepare_rest_search(tags, not_tags).replace(':', ';')
|
|
query = {}
|
|
if len(val) != 0:
|
|
query['value'] = val
|
|
if len(tag) != 0:
|
|
query['tags'] = tag
|
|
if type_attribute is not None:
|
|
query['type'] = type_attribute
|
|
if category is not None:
|
|
query['category'] = category
|
|
if org is not None:
|
|
query['org'] = org
|
|
if date_from is not None:
|
|
if isinstance(date_from, datetime.date) or isinstance(date_to, datetime.datetime):
|
|
query['from'] = date_from.strftime('%Y-%m-%d')
|
|
else:
|
|
query['from'] = date_from
|
|
if date_to is not None:
|
|
if isinstance(date_to, datetime.date) or isinstance(date_to, datetime.datetime):
|
|
query['to'] = date_to.strftime('%Y-%m-%d')
|
|
else:
|
|
query['to'] = date_to
|
|
if last is not None:
|
|
query['last'] = last
|
|
|
|
session = self.__prepare_session()
|
|
return self.__query(session, 'restSearch/download', query)
|
|
|
|
def get_attachement(self, event_id):
|
|
"""
|
|
Get attachement of an event (not sample)
|
|
|
|
:param event_id: Event id from where the attachements will
|
|
be fetched
|
|
"""
|
|
attach = urljoin(self.root_url, 'attributes/downloadAttachment/download/{}'.format(event_id))
|
|
session = self.__prepare_session()
|
|
return session.get(attach)
|
|
|
|
def get_yara(self, event_id):
|
|
to_post = {'request': {'eventid': event_id, 'type': 'yara'}}
|
|
session = self.__prepare_session()
|
|
response = session.post(urljoin(self.root_url, 'attributes/restSearch'), data=json.dumps(to_post))
|
|
result = response.json()
|
|
if response.status_code != 200:
|
|
return False, result.get('message')
|
|
if not result.get('response') and result.get('message'):
|
|
return False, result.get('message')
|
|
rules = '\n\n'.join([a['value'] for a in result['response']['Attribute']])
|
|
return True, rules
|
|
|
|
def download_samples(self, sample_hash=None, event_id=None, all_samples=False):
|
|
to_post = {'request': {'hash': sample_hash, 'eventID': event_id, 'allSamples': all_samples}}
|
|
session = self.__prepare_session()
|
|
response = session.post(urljoin(self.root_url, 'attributes/downloadSample'), data=json.dumps(to_post))
|
|
result = response.json()
|
|
if response.status_code != 200:
|
|
return False, result.get('message')
|
|
if not result.get('result') and result.get('message'):
|
|
return False, result.get('message')
|
|
details = []
|
|
for f in result['result']:
|
|
decoded = base64.b64decode(f['base64'])
|
|
zipped = BytesIO(decoded)
|
|
archive = zipfile.ZipFile(zipped)
|
|
try:
|
|
# New format
|
|
unzipped = BytesIO(archive.open(f['md5'], pwd='infected').read())
|
|
except KeyError:
|
|
# Old format
|
|
unzipped = BytesIO(archive.open(f['filename'], pwd='infected').read())
|
|
details.append([f['event_id'], f['filename'], unzipped])
|
|
return True, details
|
|
|
|
def download_last(self, last):
|
|
"""
|
|
Download the last updated events.
|
|
|
|
:param last: can be defined in days, hours, minutes (for example 5d or 12h or 30m)
|
|
"""
|
|
return self.search(last=last)
|
|
|
|
# ############## Suricata ###############
|
|
|
|
def download_all_suricata(self):
|
|
"""
|
|
Download all suricata rules events.
|
|
"""
|
|
suricata_rules = urljoin(self.root_url, 'events/nids/suricata/download')
|
|
session = self.__prepare_session('rules')
|
|
return session.get(suricata_rules)
|
|
|
|
def download_suricata_rule_event(self, event_id):
|
|
"""
|
|
Download one suricata rule event.
|
|
|
|
:param event_id: ID of the event to download (same as get)
|
|
"""
|
|
template = urljoin(self.root_url, 'events/nids/suricata/download/{}'.format(event_id))
|
|
session = self.__prepare_session('rules')
|
|
return session.get(template)
|
|
|
|
# ########## Version ##########
|
|
|
|
def get_api_version(self):
|
|
"""
|
|
Returns the current version of PyMISP installed on the system
|
|
"""
|
|
return {'version': __version__}
|
|
|
|
def get_api_version_master(self):
|
|
"""
|
|
Get the most recent version of PyMISP from github
|
|
"""
|
|
r = requests.get('https://raw.githubusercontent.com/MISP/PyMISP/master/pymisp/__init__.py')
|
|
if r.status_code == 200:
|
|
version = re.findall("__version__ = '(.*)'", r.text)
|
|
return {'version': version[0]}
|
|
else:
|
|
return {'message': 'Impossible to retrieve the version of the master branch.'}
|
|
|
|
def get_version(self):
|
|
"""
|
|
Returns the version of the instance.
|
|
"""
|
|
session = self.__prepare_session()
|
|
url = urljoin(self.root_url, 'servers/getVersion')
|
|
return session.get(url).json()
|
|
|
|
def get_version_master(self):
|
|
"""
|
|
Get the most recent version from github
|
|
"""
|
|
r = requests.get('https://raw.githubusercontent.com/MISP/MISP/master/VERSION.json')
|
|
if r.status_code == 200:
|
|
master_version = json.loads(r.text)
|
|
return {'version': '{}.{}.{}'.format(master_version['major'], master_version['minor'], master_version['hotfix'])}
|
|
else:
|
|
return {'message': 'Impossible to retrieve the version of the master branch.'}
|
|
|
|
# ############## Deprecated (Pure XML API should not be used) ##################
|
|
|
|
@deprecated
|
|
def download_all(self):
|
|
"""
|
|
Download all event from the instance
|
|
"""
|
|
xml = urljoin(self.root_url, 'events/xml/download')
|
|
session = self.__prepare_session('xml')
|
|
return session.get(xml)
|
|
|
|
@deprecated
|
|
def download(self, event_id, with_attachement=False):
|
|
"""
|
|
Download one event in XML
|
|
|
|
:param event_id: Event id of the event to download (same as get)
|
|
"""
|
|
if with_attachement:
|
|
attach = 'true'
|
|
else:
|
|
attach = 'false'
|
|
template = urljoin(self.root_url, 'events/xml/download/{}/{}'.format(event_id, attach))
|
|
session = self.__prepare_session('xml')
|
|
return session.get(template)
|