updated decode-spam-headers.py
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mgeeky
parent
6b89dcda24
commit
09093a8b81
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@ -576,7 +576,7 @@ class SMTPHeadersAnalysis:
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'BLK' : logger.colored('Filtering was skipped and the message was blocked because it was sent from an address in a user\'s Blocked Senders list.', 'red'),
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'NSPM' : logger.colored('Spam filtering marked the message as non-spam and the message was sent to the intended recipients.', 'green'),
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'SFE' : logger.colored('Filtering was skipped and the message was allowed because it was sent from an address in a user\'s Safe Senders list.', 'green'),
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'SKA' : 'The message skipped spam filtering and was delivered to the Inbox because the sender was in the allowed senders list or allowed domains list in an anti-spam policy.',
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'SKA' : logger.colored('The message skipped spam filtering and was delivered to the Inbox because the sender was in the allowed senders list or allowed domains list in an anti-spam policy.', 'green'),
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'SKB' : logger.colored('The message was marked as spam because it matched a sender in the blocked senders list or blocked domains list in an anti-spam policy.', 'red'),
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'SKI' : 'Similar to SFV:SKN, the message skipped spam filtering for another reason (for example, an intra-organizational email within a tenant).',
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'SKN' : logger.colored('The message was marked as non-spam prior to being processed by spam filtering. For example, the message was marked as SCL -1 or Bypass spam filtering by a mail flow rule.', 'green'),
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@ -3074,7 +3074,8 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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_domain1 = SMTPHeadersAnalysis.extractDomain(_domain)
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if _domain1.lower() == firstHopDomain1:
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result += self.logger.colored(f'\n\t- First Hop ({firstHopDomain1}) is authorized to send e-mails on behalf of ({domain}) due to SPF records.\n\n', 'green')
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result += self.logger.colored(f'\n\t- [+] First Hop ({firstHopDomain1}) is authorized to send e-mails on behalf of ({domain}) due to SPF records.\n', 'yellow')
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result += '\t- So I\'m not sure if there was Domain Impersonation or not, but my best guess is negative.\n'
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spf = True
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break
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@ -3179,7 +3180,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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for prop in props:
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if prop in SMTPHeadersAnalysis.ATP_Message_Properties.keys():
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result += f'- ' + self.logger.colored(SMTPHeadersAnalysis.ATP_Message_Properties[prop], 'magenta') + '\n'
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result += f'\t- ' + self.logger.colored(SMTPHeadersAnalysis.ATP_Message_Properties[prop], 'magenta') + '\n'
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return {
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'header' : header,
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@ -3469,6 +3470,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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elif match2:
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obj['ip'] = match2.group(1)
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if len(obj) > 0:
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path.append(obj)
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if n2 != -1:
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@ -3608,7 +3610,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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levels.sort()
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if scl in levels:
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tmp += '\t' + SMTPHeadersAnalysis.ForeFront_Bulk_Confidence_Levels[scl] + '\n'
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tmp += '\t- ' + SMTPHeadersAnalysis.ForeFront_Bulk_Confidence_Levels[scl] + '\n'
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else:
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for i in range(len(levels)):
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@ -4104,9 +4106,6 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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if words[0] != 'pass':
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result += self.logger.colored(f'- Received-SPF test failed', 'red') + ': Should be "pass", but was: "' + str(words[0]) + '"\n'
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if words[0] in SMTPHeadersAnalysis.auth_result.keys():
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result += '\t- Meaning: ' + str(SMTPHeadersAnalysis.auth_result[words[0]]) + '\n\n'
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if len(result) == 0:
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return []
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@ -4168,7 +4167,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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result += self.logger.colored(f'- {k.upper()} test failed:', 'red') + f' Should be "{p}", but was: "' + p2 + '"\n'
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if tests[k] in SMTPHeadersAnalysis.auth_result.keys():
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if k.lower() == 'dkim' and tests[k] in SMTPHeadersAnalysis.auth_result.keys():
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result += '\t- Meaning: ' + SMTPHeadersAnalysis.auth_result[tests[k]] + '\n\n'
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if len(result) == 0:
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@ -4184,6 +4183,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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def testExtractIP(self):
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addresses = re.findall(r'([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})', self.text)
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result = ''
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tmp = ''
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resolved = set()
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if len(addresses) == 0: return []
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@ -4201,13 +4201,21 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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out = SMTPHeadersAnalysis.resolveAddress(ipaddr)
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addr = self.logger.colored(addr, 'magenta')
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result += f'\t- Found IP address: ({addr}) that resolves to: {out[0]}\n'
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tmp += f'\t- Found IP address: ({addr}) that resolves to: {out[0]}\n'
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else:
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addr = self.logger.colored(addr, 'magenta')
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result += f'\t- Found IP address: ({addr})\n'
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tmp += f'\t- Found IP address: ({addr})\n'
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except Exception as e:
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result += f'\t- Found IP address: ({addr}) that wasn\'t resolved\n'
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tmp += f'\t- Found IP address: ({addr}) that wasn\'t resolved\n'
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if len(tmp) > 0:
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if self.resolve:
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result = '\n\t- Extracted IP addresses from headers and attempted resolve them:\n\n'
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else:
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result = '\n\t- Extracted IP addresses from headers:\n\n'
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result += tmp
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if len(resolved) == 0:
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return []
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@ -4223,6 +4231,7 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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domains = set(re.findall(r'([a-zA-Z0-9_\-\.]+\.[a-zA-Z]{2,})', self.text, re.I))
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resolved = set()
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result = ''
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tmp = ''
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skip = (
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'smtp.mailfrom',
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@ -4239,6 +4248,8 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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try:
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resolved.add(d)
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d2 = self.colorizeKeywords(d)
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if self.resolve:
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self.logger.dbg(f'testResolveIntoIP: Resolving {d}...')
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out = socket.gethostbyname(d)
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@ -4246,13 +4257,21 @@ Src: https://www.cisco.com/c/en/us/td/docs/security/esa/esa11-1/user_guide/b_ESA
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if type(out) == list:
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out = out[0]
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result += f'\t- Found Domain: {self.logger.colored(d, "magenta")}\n\t\t- that resolves to: {out}\n'
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tmp += f'\t- Found Domain: {d2}\n\t\t- that resolves to: {out}\n'
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else:
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result += f'\t- Found Domain: {self.logger.colored(d, "magenta")}\n'
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tmp += f'\t- Found Domain: {d2}\n'
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except Exception as e:
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result += f'\t- Found Domain: ({self.logger.colored(d, "magenta")}) that wasn\'t resolved\n'
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tmp += f'\t- Found Domain: ({self.logger.colored(d, "magenta")}) that wasn\'t resolved\n'
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if len(tmp) > 0:
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if self.resolve:
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result = '\n\t- Extracted domains from headers and attempted resolve them:\n\n'
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else:
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result = '\n\t- Extracted domains from headers:\n\n'
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result += tmp
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if len(resolved) == 0:
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return []
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