def json2indicator(config, src, dest, endpoint, json_, crits_id):
'''transform crits indicators into stix indicators with embedded
cybox observable composition'''
try:
set_id_method(IDGenerator.METHOD_UUID)
xmlns_url = config['edge']['sites'][dest]['stix']['xmlns_url']
xmlns_name = config['edge']['sites'][dest]['stix']['xmlns_name']
set_cybox_id_namespace(Namespace(xmlns_url, xmlns_name))
if endpoint == 'indicators':
endpoint_trans = {'Email': 'emails', 'IP': 'ips',
'Sample': 'samples', 'Domain': 'domains',
'Indicator': 'indicators', 'Event': 'events'}
if json_.get('type', None) not in ['Reference', 'Related_To']:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits', obj_type='indicator type ' + json_.get('type', 'None'),
id_=crits_id))
return(None)
indicator_ = Indicator()
indicator_.id = xmlns_name + ':indicator-' + crits_id
indicator_.id_ = indicator_.id
indicator_.title = json_['value']
indicator_.confidence = json_['confidence']['rating'].capitalize()
indicator_.add_indicator_type('Malware Artifacts')
observable_composition_ = ObservableComposition()
observable_composition_.operator = \
indicator_.observable_composition_operator
for r in json_['relationships']:
if r.get('relationship', None) not in ['Contains', 'Related_To']:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits', obj_type='indicator relationship type '
+ r.get('relationship', 'None'), id_=crits_id))
continue
if r['type'] in ['Sample', 'Email', 'IP', 'Sample', 'Domain']:
observable_ = Observable()
observable_.idref = xmlns_name + ':observable-' + r['value']
observable_composition_.add(observable_)
elif r['type'] == 'Indicator':
related_indicator = RelatedIndicator(Indicator(idref=xmlns_name + ':indicator-' + r['value']))
indicator_.related_indicators.append(related_indicator)
# stix indicators don't support related_incident :-(
# elif r['type'] == 'Event':
# related_incident = RelatedIncident(Incident(idref=xmlns_name + ':incident-' + r['value']))
# indicator_.related_incidents.append(related_incident)
indicator_.observable = Observable()
indicator_.observable.observable_composition = \
observable_composition_
return(indicator_)
else:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits', obj_type=endpoint, id_=crits_id))
return(None)
except:
e = sys.exc_info()[0]
config['logger'].error(log.log_messages['obj_convert_error'].format(
src_type='crits', src_obj='indicator', id_=crits_id,
dest_type='stix', dest_obj='indicator'))
config['logger'].exception(e)
return(None)
def json2indicator(config, src, dest, endpoint, json_, crits_id):
'''transform crits indicators into stix indicators with embedded
cybox observable composition'''
try:
set_id_method(IDGenerator.METHOD_UUID)
xmlns_url = config['edge']['sites'][dest]['stix']['xmlns_url']
xmlns_name = config['edge']['sites'][dest]['stix']['xmlns_name']
set_cybox_id_namespace(Namespace(xmlns_url, xmlns_name))
if endpoint == 'indicators':
endpoint_trans = {
'Email': 'emails',
'IP': 'ips',
'Sample': 'samples',
'Domain': 'domains',
'Indicator': 'indicators',
'Event': 'events'
}
if json_.get('type', None) not in ['Reference', 'Related_To']:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits',
obj_type='indicator type ' + json_.get('type', 'None'),
id_=crits_id))
return (None)
indicator_ = Indicator()
indicator_.id = xmlns_name + ':indicator-' + crits_id
indicator_.id_ = indicator_.id
indicator_.title = json_['value']
indicator_.confidence = json_['confidence']['rating'].capitalize()
indicator_.add_indicator_type('Malware Artifacts')
observable_composition_ = ObservableComposition()
observable_composition_.operator = \
indicator_.observable_composition_operator
for r in json_['relationships']:
if r.get('relationship',
None) not in ['Contains', 'Related_To']:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits',
obj_type='indicator relationship type ' +
r.get('relationship', 'None'),
id_=crits_id))
continue
if r['type'] in ['Sample', 'Email', 'IP', 'Sample', 'Domain']:
observable_ = Observable()
observable_.idref = xmlns_name + ':observable-' + r['value']
observable_composition_.add(observable_)
elif r['type'] == 'Indicator':
related_indicator = RelatedIndicator(
Indicator(idref=xmlns_name + ':indicator-' +
r['value']))
indicator_.related_indicators.append(related_indicator)
# stix indicators don't support related_incident :-(
# elif r['type'] == 'Event':
# related_incident = RelatedIncident(Incident(idref=xmlns_name + ':incident-' + r['value']))
# indicator_.related_incidents.append(related_incident)
indicator_.observable = Observable()
indicator_.observable.observable_composition = \
observable_composition_
return (indicator_)
else:
config['logger'].error(
log.log_messages['unsupported_object_error'].format(
type_='crits', obj_type=endpoint, id_=crits_id))
return (None)
except:
e = sys.exc_info()[0]
config['logger'].error(log.log_messages['obj_convert_error'].format(
src_type='crits',
src_obj='indicator',
id_=crits_id,
dest_type='stix',
dest_obj='indicator'))
config['logger'].exception(e)
return (None)
