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