Delete hooks.py
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#!/usr/bin/env python3
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######
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# TODO: DETECT DUPLICATE DATA
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#####
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import os
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import pymisp
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import tempfile
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import logging
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from pyaml import yaml
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from io import StringIO
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log = logging.getLogger("__main__")
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from opentaxii.signals import (
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CONTENT_BLOCK_CREATED, INBOX_MESSAGE_CREATED
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)
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## CONFIG
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if "OPENTAXII_CONFIG" in os.environ:
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print("Using config from {}".format(os.environ["OPENTAXII_CONFIG"]))
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CONFIG = yaml.load(open(os.environ["OPENTAXII_CONFIG"], "r"))
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else:
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print("Trying to use env variables...")
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if "MISP_URL" in os.environ:
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misp_url = os.environ["MISP_URL"]
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else:
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print("Unkown misp URL. Set OPENTAXII_CONFIG or MISP_URL.")
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misp_url = "UNKNOWN"
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if "MISP_API" in os.environ:
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misp_api = os.environ["MISP_API"]
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else:
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print("Unknown misp API key. Set OPENTAXII_CONFIG or MISP_API.")
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misp_api = "UNKNOWN"
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CONFIG = {
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"misp" : {
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"url" : misp_url,
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"api" : misp_api
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}
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}
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MISP = pymisp.PyMISP(
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CONFIG["misp"]["url"],
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CONFIG["misp"]["api"],
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ssl = CONFIG["misp"].get("verifySSL", True)
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)
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def post_stix(manager, content_block, collection_ids, service_id):
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'''
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Callback function for when our taxii server gets new data
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Will convert it to a MISPEvent and push to the server
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'''
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# Load the package
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log.info("Posting STIX...")
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block = content_block.content
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if isinstance(block, bytes):
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block = block.decode()
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package = pymisp.tools.stix.load_stix(StringIO(block))
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log.info("STIX loaded succesfully.")
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values = [x.value for x in package.attributes]
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log.info("Extracted %s", values)
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for attrib in values:
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log.info("Checking for existence of %s", attrib)
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search = MISP.search("attributes", values=str(attrib))
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if search["response"] != []:
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# This means we have it!
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log.info("%s is a duplicate, we'll ignore it.", attrib)
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package.attributes.pop([x.value for x in package.attributes].index(attrib))
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else:
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log.info("%s is unique, we'll keep it", attrib)
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# Push the event to MISP
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# TODO: There's probably a proper method to do this rather than json_full
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# But I don't wanna read docs
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if (len(package.attributes) > 0):
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log.info("Uploading event to MISP with attributes %s", [x.value for x in package.attributes])
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MISP.add_event(package)
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else:
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log.info("No attributes, not bothering.")
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# Make TAXII call our push function whenever it gets new data
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CONTENT_BLOCK_CREATED.connect(post_stix)
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