Modules for expansion services, import and export in MISP http://misp.github.io/misp-modules
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import json
from dns import reversename, resolver, exception
misperrors = {'error': 'Error'}
mispattributes = {'input': ['ip-src', 'ip-dst', 'domain|ip'], 'output': ['hostname']}
# possible module-types: 'expansion', 'hover' or both
moduleinfo = {'version': '0.1', 'author': 'Andreas Muehlemann',
'description': 'Simple Reverse DNS expansion service to resolve reverse DNS from MISP attributes',
'module-type': ['expansion', 'hover']}
# config fields that your code expects from the site admin
moduleconfig = ['nameserver']
def handler(q=False):
if q is False:
return False
request = json.loads(q)
if request.get('ip-dst'):
toquery = request['ip-dst']
elif request.get('ip-src'):
toquery = request['ip-src']
elif request.get('domain|ip'):
toquery = request['domain|ip'].split('|')[1]
else:
return False
# reverse lookup for ip
revname = reversename.from_address(toquery)
r = resolver.Resolver()
r.timeout = 2
r.lifetime = 2
if request.get('config'):
if request['config'].get('nameserver'):
nameservers = []
nameservers.append(request['config'].get('nameserver'))
r.nameservers = nameservers
else:
r.nameservers = ['8.8.8.8']
try:
answer = r.query(revname, 'PTR')
except resolver.NXDOMAIN:
misperrors['error'] = "NXDOMAIN"
return misperrors
except exception.Timeout:
misperrors['error'] = "Timeout"
return misperrors
except Exception:
misperrors['error'] = "DNS resolving error"
return misperrors
r = {'results': [{'types': mispattributes['output'],
'values':[str(answer[0])]}]}
return r
def introspection():
return mispattributes
def version():
moduleinfo['config'] = moduleconfig
return moduleinfo