NetExec/cme/connection.py

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import logging
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from os.path import isfile
# from traceback import format_exc
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from gevent.lock import BoundedSemaphore
from gevent.socket import gethostbyname
from functools import wraps
from cme.logger import CMEAdapter
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from cme.context import Context
sem = BoundedSemaphore(1)
global_failed_logins = 0
user_failed_logins = {}
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def requires_admin(func):
def _decorator(self, *args, **kwargs):
if self.admin_privs is False: return
return func(self, *args, **kwargs)
return wraps(func)(_decorator)
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class connection(object):
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def __init__(self, args, db, host):
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self.args = args
self.db = db
self.hostname = host
self.conn = None
self.admin_privs = False
self.logger = None
self.password = ''
self.username = ''
self.kerberos = True if self.args.kerberos else False
self.aesKey = None if not self.args.aesKey else self.args.aesKey
self.kdcHost = None if not self.args.kdcHost else self.args.kdcHost
self.failed_logins = 0
self.local_ip = None
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try:
self.host = gethostbyname(self.hostname)
if self.args.kerberos:
self.host = self.hostname
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except Exception as e:
logging.debug('Error resolving hostname {}: {}'.format(self.hostname, e))
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return
self.proto_flow()
@staticmethod
def proto_args(std_parser, module_parser):
return
def proto_logger(self):
pass
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def enum_host_info(self):
return
def print_host_info(info):
return
def create_conn_obj(self):
return
def check_if_admin(self):
return
def kerberos_login(self):
return
def plaintext_login(self, domain, username, password):
return
def hash_login(self, domain, username, ntlm_hash):
return
def proto_flow(self):
if self.create_conn_obj():
self.enum_host_info()
self.proto_logger()
self.print_host_info()
self.login()
if hasattr(self.args, 'module') and self.args.module:
self.call_modules()
else:
self.call_cmd_args()
def call_cmd_args(self):
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for k, v in vars(self.args).items():
if hasattr(self, k) and hasattr(getattr(self, k), '__call__'):
if v is not False and v is not None:
logging.debug('Calling {}()'.format(k))
getattr(self, k)()
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def call_modules(self):
module_logger = CMEAdapter(extra={
'module': self.module.name.upper(),
'host': self.host,
'port': self.args.port,
'hostname': self.hostname
})
context = Context(self.db, module_logger, self.args)
context.localip = self.local_ip
if hasattr(self.module, 'on_request') or hasattr(self.module, 'has_response'):
self.server.connection = self
self.server.context.localip = self.local_ip
if hasattr(self.module, 'on_login'):
self.module.on_login(context, self)
if self.admin_privs and hasattr(self.module, 'on_admin_login'):
self.module.on_admin_login(context, self)
if (not hasattr(self.module, 'on_request') and not hasattr(self.module, 'has_response')) and hasattr(self.module, 'on_shutdown'):
self.module.on_shutdown(context, self)
def inc_failed_login(self, username):
global global_failed_logins
global user_failed_logins
if username not in user_failed_logins.keys():
user_failed_logins[username] = 0
user_failed_logins[username] += 1
global_failed_logins += 1
self.failed_logins += 1
def over_fail_limit(self, username):
global global_failed_logins
global user_failed_logins
if global_failed_logins == self.args.gfail_limit: return True
if self.failed_logins == self.args.fail_limit: return True
if username in user_failed_logins.keys():
if self.args.ufail_limit == user_failed_logins[username]: return True
return False
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def login(self):
if self.args.kerberos:
if self.kerberos_login(self.aesKey, self.kdcHost): return True
else:
for cred_id in self.args.cred_id:
with sem:
if cred_id.lower() == 'all':
creds = self.db.get_credentials()
else:
creds = self.db.get_credentials(filterTerm=int(cred_id))
for cred in creds:
logging.debug(cred)
try:
c_id, domain, username, password, credtype, pillaged_from = cred
if credtype and password:
if not domain: domain = self.domain
if self.args.local_auth:
domain = self.domain
elif self.args.domain:
domain = self.args.domain
if credtype == 'hash' and not self.over_fail_limit(username):
if self.hash_login(domain, username, password): return True
elif credtype == 'plaintext' and not self.over_fail_limit(username):
if self.plaintext_login(domain, username, password): return True
except IndexError:
self.logger.error("Invalid database credential ID!")
for user in self.args.username:
if not isinstance(user, str) and isfile(user.name):
for usr in user:
if "\\" in usr:
tmp = usr
usr = tmp.split('\\')[1].strip()
self.domain = tmp.split('\\')[0]
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if hasattr(self.args, 'hash') and self.args.hash:
with sem:
for ntlm_hash in self.args.hash:
if isinstance(ntlm_hash, str):
if not self.over_fail_limit(usr.strip()):
if self.hash_login(self.domain, usr.strip(), ntlm_hash): return True
elif not isinstance(ntlm_hash, str) and isfile(ntlm_hash.name) and self.args.no_bruteforce == False:
for f_hash in ntlm_hash:
if not self.over_fail_limit(usr.strip()):
if self.hash_login(self.domain, usr.strip(), f_hash.strip()): return True
ntlm_hash.seek(0)
elif not isinstance(ntlm_hash, str) and isfile(ntlm_hash.name) and self.args.no_bruteforce == True:
user.seek(0)
for usr, f_hash in zip(user, ntlm_hash):
if not self.over_fail_limit(usr.strip()):
if self.hash_login(self.domain, usr.strip(), f_hash.strip()): return True
elif self.args.password:
with sem:
for password in self.args.password:
if isinstance(password, str):
if not self.over_fail_limit(usr.strip()):
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if hasattr(self.args, 'domain'):
if self.plaintext_login(self.domain, usr.strip(), password): return True
else:
if self.plaintext_login(usr.strip(), password): return True
elif not isinstance(password, str) and isfile(password.name) and self.args.no_bruteforce == False:
for f_pass in password:
if not self.over_fail_limit(usr.strip()):
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if hasattr(self.args, 'domain'):
if self.plaintext_login(self.domain, usr.strip(), f_pass.strip()): return True
else:
if self.plaintext_login(usr.strip(), f_pass.strip()): return True
password.seek(0)
elif not isinstance(password, str) and isfile(password.name) and self.args.no_bruteforce == True:
user.seek(0)
for usr, f_pass in zip(user, password):
if not self.over_fail_limit(usr.strip()):
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if hasattr(self.args, 'domain'):
if self.plaintext_login(self.domain, usr.strip(), f_pass.strip()): return True
else:
if self.plaintext_login(usr.strip(), f_pass.strip()): return True
user.seek(0) # added june 2020, may break everything but solve this issue cme smb file -u file -p file
elif isinstance(user, str):
if hasattr(self.args, 'hash') and self.args.hash:
with sem:
for ntlm_hash in self.args.hash:
if isinstance(ntlm_hash, str):
if not self.over_fail_limit(user):
if self.hash_login(self.domain, user, ntlm_hash): return True
elif not isinstance(ntlm_hash, str) and isfile(ntlm_hash.name):
for f_hash in ntlm_hash:
if not self.over_fail_limit(user):
if self.hash_login(self.domain, user, f_hash.strip()): return True
ntlm_hash.seek(0)
elif self.args.password:
with sem:
for password in self.args.password:
if isinstance(password, str):
if not self.over_fail_limit(user):
if hasattr(self.args, 'domain'):
if self.plaintext_login(self.domain, user, password): return True
else:
if self.plaintext_login(user, password): return True
elif not isinstance(password, str) and isfile(password.name):
for f_pass in password:
if not self.over_fail_limit(user):
if hasattr(self.args, 'domain'):
if self.plaintext_login(self.domain, user, f_pass.strip()): return True
else:
if self.plaintext_login(user, f_pass.strip()): return True
password.seek(0)