mirror of https://github.com/MISP/misp-modules
Make PEP8 happy \o/
Raphaël Vinot
parent
91675a635c
commit
c6fccf1b7e
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@ -1,6 +1,4 @@
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import json
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import stix
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import csv
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from stix.core import STIXPackage
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import re
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import base64
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@ -18,180 +16,183 @@ moduleconfig = []
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def handler(q=False):
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#Just in case we have no data
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# Just in case we have no data
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if q is False:
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return False
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#The return value
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# The return value
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r = {'results': []}
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#Load up that JSON
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# Load up that JSON
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q = json.loads(q)
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#It's b64 encoded, so decode that stuff
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# It's b64 encoded, so decode that stuff
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package = str(base64.b64decode(q.get("data", None)), 'utf-8')
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#If something really weird happened
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if not package:
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return json.dumps({"success":0})
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#Load up the package into STIX
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# If something really weird happened
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if not package:
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return json.dumps({"success": 0})
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# Load up the package into STIX
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package = loadPackage(package)
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#Build all the observables
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# Build all the observables
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if package.observables:
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for obs in package.observables:
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r["results"].append(buildObservable(obs))
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for obs in package.observables:
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r["results"].append(buildObservable(obs))
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if package.threat_actors:
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for ta in package.threat_actors:
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r["results"].append(buildActor(ta))
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for ta in package.threat_actors:
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r["results"].append(buildActor(ta))
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if package.indicators:
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for ind in package.indicators:
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r["results"].append(buildIndicator(ind))
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for ind in package.indicators:
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r["results"].append(buildIndicator(ind))
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if package.exploit_targets:
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for et in package.exploit_targets:
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r["results"].append(buildExploitTarget(et))
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for et in package.exploit_targets:
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r["results"].append(buildExploitTarget(et))
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if package.campaigns:
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for cpn in package.campaigns:
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r["results"].append(buildCampaign(cpn))
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#Clean up results
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#Don't send on anything that didn't have a value
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for cpn in package.campaigns:
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r["results"].append(buildCampaign(cpn))
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# Clean up results
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# Don't send on anything that didn't have a value
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r["results"] = [x for x in r["results"] if len(x["values"]) != 0]
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return r
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#Quick and dirty regex for IP addresses
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# Quick and dirty regex for IP addresses
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ipre = re.compile("([0-9]{1,3}.){3}[0-9]{1,3}")
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def buildCampaign(cpn):
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"""
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Extract a campaign name
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"""
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return {"values":[cpn.title], "types":["campaign-name"]}
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"""
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Extract a campaign name
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"""
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return {"values": [cpn.title], "types": ["campaign-name"]}
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def buildExploitTarget(et):
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"""
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Extract CVEs from exploit targets
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"""
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"""
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Extract CVEs from exploit targets
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"""
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r = {"values":[], "types":["vulnerability"]}
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r = {"values": [], "types": ["vulnerability"]}
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if et.vulnerabilities:
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for v in et.vulnerabilities:
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if v.cve_id:
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r["values"].append(v.cve_id)
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if et.vulnerabilities:
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for v in et.vulnerabilities:
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if v.cve_id:
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r["values"].append(v.cve_id)
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return r
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return r
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def identifyHash(hsh):
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"""
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What's that hash!?
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"""
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"""
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What's that hash!?
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"""
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possible_hashes = []
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possible_hashes = []
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hashes = [x for x in hashlib.algorithms_guaranteed]
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hashes = [x for x in hashlib.algorithms_guaranteed]
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for h in hashes:
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if len(str(hsh)) == len(hashlib.new(h).hexdigest()):
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possible_hashes.append(h)
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possible_hashes.append("filename|{}".format(h))
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return possible_hashes
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for h in hashes:
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if len(str(hsh)) == len(hashlib.new(h).hexdigest()):
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possible_hashes.append(h)
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possible_hashes.append("filename|{}".format(h))
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return possible_hashes
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def buildIndicator(ind):
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"""
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Extract hashes
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and other fun things
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like that
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"""
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r = {"values":[], "types":[]}
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"""
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Extract hashes
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and other fun things
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like that
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"""
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r = {"values": [], "types": []}
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# Try to get hashes. I hate stix
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if ind.observable:
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return buildObservable(ind.observable)
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return r
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#Try to get hashes. I hate stix
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if ind.observable:
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return buildObservable(ind.observable)
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return r
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def buildActor(ta):
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"""
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Extract the name
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and comment of a
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threat actor
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"""
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r = {"values":[ta.title], "types":["threat-actor"]}
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return r
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"""
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Extract the name
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and comment of a
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threat actor
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"""
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r = {"values": [ta.title], "types": ["threat-actor"]}
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return r
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def buildObservable(o):
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"""
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Take a STIX observable
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and extract the value
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and category
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"""
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"""
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Take a STIX observable
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and extract the value
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and category
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"""
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#Life is easier with json
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if not isinstance(o, dict):
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o = json.loads(o.to_json())
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#Make a new record to store values in
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r = {"values":[]}
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# Life is easier with json
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if not isinstance(o, dict):
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o = json.loads(o.to_json())
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# Make a new record to store values in
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r = {"values": []}
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#Get the object properties. This contains all the
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#fun stuff like values
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if "observable_composition" in o:
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#May as well be useless
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return r
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props = o["object"]["properties"]
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# Get the object properties. This contains all the
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# fun stuff like values
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if "observable_composition" in o:
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# May as well be useless
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return r
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#If it has an address_value field, it's gonna be an address
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print(props)
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#Kinda obvious really
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if "address_value" in props:
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#We've got ourselves a nice little address
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value = props["address_value"]
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props = o["object"]["properties"]
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if isinstance(value, dict):
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#Sometimes it's embedded in a dictionary
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value = value["value"]
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# If it has an address_value field, it's gonna be an address
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# print(props)
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# Kinda obvious really
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if "address_value" in props:
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#Is it an IP?
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if ipre.match(str(value)):
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# We've got ourselves a nice little address
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value = props["address_value"]
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#Yes!
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r["values"].append(value)
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r["types"] = ["ip-src", "ip-dst"]
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else:
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if isinstance(value, dict):
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# Sometimes it's embedded in a dictionary
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value = value["value"]
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#Probably a domain yo
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r["values"].append(value)
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r["types"] = ["domain", "hostname"]
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# Is it an IP?
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if ipre.match(str(value)):
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# Yes!
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r["values"].append(value)
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r["types"] = ["ip-src", "ip-dst"]
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else:
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# Probably a domain yo
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r["values"].append(value)
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r["types"] = ["domain", "hostname"]
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if "hashes" in props:
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for hsh in props["hashes"]:
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r["values"].append(hsh["simple_hash_value"]["value"])
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r["types"] = identifyHash(hsh["simple_hash_value"]["value"])
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return r
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if "hashes" in props:
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for hsh in props["hashes"]:
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r["values"].append(hsh["simple_hash_value"]["value"])
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r["types"] = identifyHash(hsh["simple_hash_value"]["value"])
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return r
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def loadPackage(data):
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#Write the stix package to a tmp file
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with open("/tmp/stixdump", "w") as f:
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f.write(data)
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try:
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#Try loading it into every format we know of
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# Write the stix package to a tmp file
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with open("/tmp/stixdump", "w") as f:
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f.write(data)
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try:
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package = STIXPackage().from_xml(open("/tmp/stixdump", "r"))
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except:
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package = STIXPackage().from_json(open("/tmp/stixdump", "r"))
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except Exception as ex:
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print("Failed to load package")
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raise ValueError("COULD NOT LOAD STIX PACKAGE!")
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return package
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# Try loading it into every format we know of
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try:
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package = STIXPackage().from_xml(open("/tmp/stixdump", "r"))
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except:
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package = STIXPackage().from_json(open("/tmp/stixdump", "r"))
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except Exception:
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print("Failed to load package")
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raise ValueError("COULD NOT LOAD STIX PACKAGE!")
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return package
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def introspection():
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modulesetup = {}
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