add: Sigma syntax validator expansion module

--> Checks sigma rules syntax
- Updated the expansion modules list as well
- Updated the requirements list
pull/198/head
chrisr3d 4 years ago
parent 7c691af807
commit b1c90b411e
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GPG Key ID: 6BBED1B63A6D639F
  1. 1
      REQUIREMENTS
  2. 2
      misp_modules/modules/expansion/__init__.py
  3. 35
      misp_modules/modules/expansion/sigma_syntax_validator.py

@ -20,3 +20,4 @@ pygeoip
bs4
oauth2
yara
sigmatools

@ -1,3 +1,3 @@
from . import _vmray
__all__ = ['vmray_submit', 'asn_history', 'circl_passivedns', 'circl_passivessl', 'countrycode', 'cve', 'dns', 'domaintools', 'eupi', 'farsight_passivedns', 'ipasn', 'passivetotal', 'sourcecache', 'virustotal', 'whois', 'shodan', 'reversedns', 'geoip_country', 'wiki', 'iprep', 'threatminer', 'otx', 'threatcrowd', 'vulndb', 'crowdstrike_falcon', 'yara_syntax_validator', 'hashdd', 'onyphe', 'onyphe_full', 'rbl', 'xforceexchange']
__all__ = ['vmray_submit', 'asn_history', 'circl_passivedns', 'circl_passivessl', 'countrycode', 'cve', 'dns', 'domaintools', 'eupi', 'farsight_passivedns', 'ipasn', 'passivetotal', 'sourcecache', 'virustotal', 'whois', 'shodan', 'reversedns', 'geoip_country', 'wiki', 'iprep', 'threatminer', 'otx', 'threatcrowd', 'vulndb', 'crowdstrike_falcon', 'yara_syntax_validator', 'hashdd', 'onyphe', 'onyphe_full', 'rbl', 'xforceexchange', 'sigma_syntax_validator']

@ -0,0 +1,35 @@
import json
try:
import yaml
from sigma.parser import SigmaParser
from sigma.config import SigmaConfiguration
except ModuleNotFoundError:
print("sigma or yaml is missing, use 'pip3 install sigmatools' to install it.")
misperrors = {'error': 'Error'}
mispattributes = {'input': ['sigma'], 'output': ['text']}
moduleinfo = {'version': '0.1', 'author': 'Christian Studer', 'module-type': ['expansion', 'hover'],
'description': 'An expansion hover module to perform a syntax check on sigma rules'}
moduleconfig = []
def handler(q=False):
if q is False:
return False
request = json.loads(q)
if not request.get('sigma'):
misperrors['error'] = 'Sigma rule missing'
return misperrors
config = SigmaConfiguration()
try:
parser = SigmaParser(yaml.load(request.get('sigma')), config)
result = ("Syntax valid: {}".format(parser.values))
except Exception as e:
result = ("Syntax error: {}".format(str(e)))
return {'results': [{'types': mispattributes['output'], 'values': result}]}
def introspection():
return mispattributes
def version():
moduleinfo['config'] = moduleconfig
return moduleinfo
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