def test_drop_noalert(self):
""" Test the rules with "noalert" are not marked as drop. """
rule_without_noalert = """alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN [CrowdStrike] ANCHOR PANDA Torn RAT Beacon Message Header Local"; flow:established, to_server; dsize:16; content:"|00 00 00 11 c8 00 00 00 00 00 00 00 00 00 00 00|"; depth:16; flowbits:set,ET.Torn.toread_header; reference:url,blog.crowdstrike.com/whois-anchor-panda/index.html; classtype:trojan-activity; sid:2016659; rev:2; metadata:created_at 2013_03_22, updated_at 2013_03_22;)"""
rule_with_noalert = """alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN [CrowdStrike] ANCHOR PANDA Torn RAT Beacon Message Header Local"; flow:established, to_server; dsize:16; content:"|00 00 00 11 c8 00 00 00 00 00 00 00 00 00 00 00|"; depth:16; flowbits:set,ET.Torn.toread_header; flowbits: noalert; reference:url,blog.crowdstrike.com/whois-anchor-panda/index.html; classtype:trojan-activity; sid:2016659; rev:2; metadata:created_at 2013_03_22, updated_at 2013_03_22;)"""
rule = suricata.update.rule.parse(rule_without_noalert)
matcher = matchers_mod.IdRuleMatcher.parse("2016659")
rule_filter = matchers_mod.DropRuleFilter(matcher)
self.assertTrue(rule_filter.match(rule))
rule = suricata.update.rule.parse(rule_with_noalert)
matcher = matchers_mod.IdRuleMatcher.parse("2016659")
rule_filter = matchers_mod.DropRuleFilter(matcher)
self.assertFalse(rule_filter.match(rule))
def load_drop_filters(filename):
matchers = load_matchers(filename)
filters = []
for matcher in matchers:
filters.append(matchers_mod.DropRuleFilter(matcher))
return filters
def test_enabled_rule(self):
rule0 = suricata.update.rule.parse(self.rule_string, "rules/malware.rules")
id_matcher = matchers_mod.IdRuleMatcher.parse("2020757")
self.assertTrue(id_matcher.match(rule0))
drop_filter = matchers_mod.DropRuleFilter(id_matcher)
rule1 = drop_filter.run(rule0)
self.assertEqual("drop", rule1.action)
self.assertTrue(rule1.enabled)
self.assertTrue(str(rule1).startswith("drop"))
