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9dc3940c07
create_new_event() -> create_new_event(args, misp) to fix: flake8 testing of https://github.com/Neo23x0/sigma on Python 3.8.3 % _flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics_ ``` ./tools/sigma/sigma2misp.py:11:16: F821 undefined name 'misp' if hasattr(misp, "new_event"): ^ ./tools/sigma/sigma2misp.py:12:16: F821 undefined name 'misp' return misp.new_event(info=args.info)["Event"]["id"] ^ ./tools/sigma/sigma2misp.py:12:36: F821 undefined name 'args' return misp.new_event(info=args.info)["Event"]["id"] ^ ./tools/sigma/sigma2misp.py:14:13: F821 undefined name 'misp' event = misp.MISPEvent() ^ ./tools/sigma/sigma2misp.py:15:18: F821 undefined name 'args' event.info = args.info ^ ./tools/sigma/sigma2misp.py:16:12: F821 undefined name 'misp' return misp.add_event(event)["Event"]["id"] ^ 6 F821 undefined name 'misp' 6 ```
74 lines
2.9 KiB
Python
Executable File
74 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python3
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# Import given Sigma rules to MISP
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import argparse
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import pathlib
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import urllib3
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urllib3.disable_warnings()
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from pymisp import PyMISP
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def create_new_event(args, misp):
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if hasattr(misp, "new_event"):
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return misp.new_event(info=args.info)["Event"]["id"]
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event = misp.MISPEvent()
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event.info = args.info
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return misp.add_event(event)["Event"]["id"]
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class MISPImportArgumentParser(argparse.ArgumentParser):
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def __init__(self, *args, **kwargs):
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super().__init__(
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description="Import Sigma rules into MISP events",
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epilog="Parameters can be read from a file by a @filename parameter. The file should contain one parameter per line. Dashes may be omitted.",
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fromfile_prefix_chars="@",
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)
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def convert_arg_line_to_args(self, line : str):
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return ("--" + line.lstrip("--")).split()
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def main():
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argparser = MISPImportArgumentParser()
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argparser.add_argument("--url", "-u", default="https://localhost", help="URL of MISP instance")
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argparser.add_argument("--key", "-k", required=True, help="API key")
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argparser.add_argument("--insecure", "-I", action="store_false", help="Disable TLS certifcate validation.")
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argparser.add_argument("--event", "-e", type=int, help="Add Sigma rule to event with this ID. If not set, create new event.")
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argparser.add_argument("--same-event", "-s", action="store_true", help="Import all Sigma rules to the same event, if no event is set.")
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argparser.add_argument("--info", "-i", default="Sigma import", help="Event Information field for newly created MISP event.")
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argparser.add_argument("--recursive", "-r", action="store_true", help="Recursive traversal of directory")
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argparser.add_argument("sigma", nargs="+", help="Sigma rule file that should be imported")
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args = argparser.parse_args()
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if args.recursive:
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paths = [ p for pathname in args.sigma for p in pathlib.Path(pathname).glob("**/*") if p.is_file() ]
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else:
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paths = [ pathlib.Path(sigma) for sigma in args.sigma ]
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misp = PyMISP(args.url, args.key, args.insecure)
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if args.event:
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if hasattr(misp, "get"):
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eventid = misp.get(args.event)["Event"]["id"]
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else:
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eventid = misp.get_event(args.event)["Event"]["id"]
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first = True
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for sigma in paths:
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if not args.event and (first or not args.same_event):
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eventid = create_new_event(args, misp)
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print("Importing Sigma rule {} into MISP event {}...".format(sigma, eventid, end=""))
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f = sigma.open("rt")
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if hasattr(misp, "add_named_attribute"):
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misp.add_named_attribute(eventid, "sigma", f.read())
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else:
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event = misp.get_event(eventid, pythonify=True)
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event.add_attribute("sigma", f.read())
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misp.update_event(event)
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f.close()
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first = False
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if __name__ == "__main__":
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main()
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