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new: Support email forwarding

tests
Raphaël Vinot 4 years ago
parent
commit
eb9b7d907d
  1. 29
      fake_smtp.py
  2. 5
      fake_smtp_config.py-example
  3. 1
      mail_to_misp_forward.py

29
fake_smtp.py

@ -1,5 +1,4 @@
#!/usr/bin/env python
import sys
import ssl
from pathlib import Path
import importlib
@ -9,11 +8,11 @@ from aiosmtpd.smtp import SMTP
import subprocess
import argparse
key_path = Path('certs', 'key.pem')
cert_path = Path('certs', 'cert.pem')
def get_context():
key_path = Path('certs', 'key.pem')
cert_path = Path('certs', 'cert.pem')
if not cert_path.exists() and not key_path.exists():
subprocess.call(f'openssl req -x509 -newkey rsa:4096 -keyout {key_path.as_posix()} -out {cert_path.as_posix()} -days 365 -nodes -subj "/CN=localhost"', shell=True)
@ -39,7 +38,10 @@ class CustomSMTPHandler:
print(f'Message addressed from: {envelope.mail_from}')
print(f'Message addressed to : {envelope.rcpt_tos}')
print(f'Message length : {len(envelope.content)}')
p = run([binpath, "-"], stdout=PIPE, input=envelope.content)
if email_forward in envelope.rcpt_tos:
p = run([binpath_forward, "-"], stdout=PIPE, input=envelope.content)
else:
p = run([binpath, "-"], stdout=PIPE, input=envelope.content)
print(p)
return '250 OK'
@ -47,25 +49,26 @@ class CustomSMTPHandler:
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Launch a fake SMTP server to push SPAMs to a MISP instance')
parser.add_argument("--path", default='./mail_to_misp.py', help="Path to the mail_to_misp.py script.")
parser.add_argument("--path_forward", default='./mail_to_misp.py', help="Path to the mail_to_misp.py script.")
parser.add_argument("--email_forward", default='mail2misp@example.com', help="Path to the mail_to_misp.py script.")
parser.add_argument("--host", default='127.0.0.1', help="IP to attach the SMTP server to.")
parser.add_argument("--port", default='2525', help="Port of the SMTP server")
parser.add_argument("--ssl", action='store_true', help="Pure SMTPs.")
args = parser.parse_args()
if not args.path and not args.host and not args.port and not args.ssl:
configmodule = Path(__file__).as_posix().replace('.py', '_config')
if Path(f'{configmodule}.py').exists():
config = importlib.import_module(configmodule)
else:
print("Couldn't locate config file {0}".format(f'{configmodule}.py'))
sys.exit(-1)
configmodule = Path(__file__).as_posix().replace('.py', '_config')
if Path(f'{configmodule}.py').exists():
config = importlib.import_module(configmodule)
binpath = config.binpath
binpath_forward = config.binpath_forward
email_forward = config.email_forward
smtp_addr = config.smtp_addr
smtp_port = config.smtp_port
smtps = config.ssl
else:
binpath = args.path
binpath_forward = args.path_forward
email_forward = args.email_forward
smtp_addr = args.host
smtp_port = args.port
smtps = args.ssl

5
fake_smtp_config.py-example

@ -2,7 +2,10 @@
# -*- coding: utf-8 -*-
from pathlib import Path
binpath = Path(__file__).cwd() / 'mail_to_misp.py'
binpath = Path(__file__).parent / 'mail_to_misp.py'
binpath_forward = Path(__file__).parent / 'mail_to_misp_forward.py'
forward_email = 'mail2misp@example.com'
smtp_addr = '127.0.0.1'
smtp_port = 2525

1
mail_to_misp_forward.py

@ -0,0 +1 @@
mail_to_misp.py
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