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new: Add support for STARTTLS and SSL

tests
Raphaël Vinot 4 years ago
parent
commit
beace3732a
  1. 0
      certs/.keepdir
  2. 60
      fake_smtp.py
  3. 1
      fake_smtp_config.py-example

0
certs/.keepdir

60
fake_smtp.py

@ -7,15 +7,30 @@ from subprocess import run, PIPE
from aiosmtpd.controller import Controller
from aiosmtpd.smtp import SMTP
import subprocess
import argparse
key_path = Path('certs', 'key.pem')
cert_path = Path('certs', 'cert.pem')
def get_context():
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)
context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
context.load_cert_chain(cert_path.as_posix(), key_path.as_posix())
# Pass SSL context to aiosmtpd
class ControllerStarttls(Controller):
class ControllerSSL(Controller):
def factory(self):
return SMTP(self.handler, require_starttls=False, tls_context=context)
return SMTP(self.handler, ssl_context=get_context())
# Pass SSL context to aiosmtpd
class ControllerSTARTTLS(Controller):
def factory(self):
return SMTP(self.handler, require_starttls=False, tls_context=get_context())
class CustomSMTPHandler:
@ -30,27 +45,38 @@ class CustomSMTPHandler:
if __name__ == '__main__':
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)
smtp_addr = config.smtp_addr
smtp_port = config.smtp_port
binpath = config.binpath
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("--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 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)
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)
context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
context.load_cert_chain(cert_path.as_posix(), key_path.as_posix())
binpath = config.binpath
smtp_addr = config.smtp_addr
smtp_port = config.smtp_port
smtps = config.ssl
else:
binpath = args.path
smtp_addr = args.host
smtp_port = args.port
smtps = args.ssl
print("Starting Fake-SMTP-to-MISP server")
handler = CustomSMTPHandler()
server = ControllerStarttls(handler, hostname=smtp_addr, port=smtp_port)
if smtps:
server = ControllerSSL(handler, hostname=smtp_addr, port=smtp_port)
else:
server = ControllerSTARTTLS(handler, hostname=smtp_addr, port=smtp_port)
server.start()
input("Server started. Press Return to quit.")
server.stop()

1
fake_smtp_config.py-example

@ -6,3 +6,4 @@ binpath = Path(__file__).cwd() / 'mail_to_misp.py'
smtp_addr = '127.0.0.1'
smtp_port = 2525
ssl = False

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