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#!/usr/bin/env python3
"""
Uses Core's Impacket Library to get the password policy from a windows machine
This is a fork of the original poelnum which is available at
CORE Security Technologies (http://www.coresecurity.com/).
Usage:
./polenum.py -u <username> -p <password> -d <domain/ip> --protocols <protocols>
Available protocols: ['445/SMB', '139/SMB']
example: polenum aaa:bbb@127.0.0.1
"""
from impacket.dcerpc.v5.rpcrt import DCERPC_v5
from impacket.dcerpc.v5 import transport, samr
from time import strftime, gmtime
import argparse
import sys
import re
def d2b(a):
tbin = []
while a:
tbin.append(a % 2)
a //= 2
t2bin = tbin[::-1]
if len(t2bin) != 8:
for x in range(6 - len(t2bin)):
t2bin.insert(0, 0)
return ''.join([str(g) for g in t2bin])
def convert(low, high, lockout=False):
time = ""
tmp = 0
if low == 0 and hex(high) == "-0x80000000":
return "Not Set"
if low == 0 and high == 0:
return "None"
if not lockout:
if (low != 0):
high = abs(high+1)
else:
high = abs(high)
low = abs(low)
tmp = low + (high)*16**8 # convert to 64bit int
tmp *= (1e-7) # convert to seconds
else:
tmp = abs(high) * (1e-7)
try:
minutes = int(strftime("%M", gmtime(tmp)))
hours = int(strftime("%H", gmtime(tmp)))
days = int(strftime("%j", gmtime(tmp)))-1
except ValueError as e:
return "[-] Invalid TIME"
if days > 1:
time += "{0} days ".format(days)
elif days == 1:
time += "{0} day ".format(days)
if hours > 1:
time += "{0} hours ".format(hours)
elif hours == 1:
time += "{0} hour ".format(hours)
if minutes > 1:
time += "{0} minutes ".format(minutes)
elif minutes == 1:
time += "{0} minute ".format(minutes)
return time
class SAMRDump:
KNOWN_PROTOCOLS = {
'139/SMB': (r'ncacn_np:%s[\pipe\samr]', 139),
'445/SMB': (r'ncacn_np:%s[\pipe\samr]', 445),
}
def __init__(self, protocols=None,
username='', password=''):
if not protocols:
protocols = list(SAMRDump.KNOWN_PROTOCOLS.keys())
self.__username = username
self.__password = password
self.__protocols = protocols
def dump(self, addr):
"""Dumps the list of users and shares registered present at
addr. Addr is a valid host name or IP address.
"""
print('\n')
if (self.__username and self.__password):
print('[+] Attaching to {0} using {1}:{2}'.format(addr,
self.__username,
self.__password))
elif (self.__username):
print('[+] Attaching to {0} using {1}'.format(addr,
self.__username))
else:
print('[+] Attaching to {0} using a NULL share'.format(addr))
# Try all requested protocols until one works.
for protocol in self.__protocols:
try:
protodef = SAMRDump.KNOWN_PROTOCOLS[protocol]
port = protodef[1]
except KeyError:
print("\n\t[!] Invalid Protocol '{0}'\n".format(protocol))
sys.exit(1)
print("\n[+] Trying protocol {0}...".format(protocol))
rpctransport = transport.SMBTransport(addr, port, r'\samr',
self.__username,
self.__password)
try:
self.__fetchList(rpctransport)
except Exception as e:
print('\n\t[!] Protocol failed: {0}'.format(e))
else:
# Got a response. No need for further iterations.
self.__pretty_print()
break
def __fetchList(self, rpctransport):
dce = DCERPC_v5(rpctransport)
dce.connect()
dce.bind(samr.MSRPC_UUID_SAMR)
# Setup Connection
resp = samr.hSamrConnect2(dce)
if resp['ErrorCode'] != 0:
raise Exception('Connect error')
resp2 = samr.hSamrEnumerateDomainsInSamServer(
dce,
serverHandle=resp['ServerHandle'],
enumerationContext=0,
preferedMaximumLength=500)
if resp2['ErrorCode'] != 0:
raise Exception('Connect error')
resp3 = samr.hSamrLookupDomainInSamServer(
dce,
serverHandle=resp['ServerHandle'],
name=resp2['Buffer']['Buffer'][0]['Name'])
if resp3['ErrorCode'] != 0:
raise Exception('Connect error')
resp4 = samr.hSamrOpenDomain(dce, serverHandle=resp['ServerHandle'],
desiredAccess=samr.MAXIMUM_ALLOWED,
domainId=resp3['DomainId'])
if resp4['ErrorCode'] != 0:
raise Exception('Connect error')
self.__domains = resp2['Buffer']['Buffer']
domainHandle = resp4['DomainHandle']
# End Setup
domain_passwd = samr.DOMAIN_INFORMATION_CLASS.DomainPasswordInformation
re = samr.hSamrQueryInformationDomain2(
dce, domainHandle=domainHandle,
domainInformationClass=domain_passwd)
self.__min_pass_len = re['Buffer']['Password']['MinPasswordLength'] \
or "None"
pass_hist_len = re['Buffer']['Password']['PasswordHistoryLength']
self.__pass_hist_len = pass_hist_len or "None"
self.__max_pass_age = convert(
int(re['Buffer']['Password']['MaxPasswordAge']['LowPart']),
int(re['Buffer']['Password']['MaxPasswordAge']['HighPart']))
self.__min_pass_age = convert(
int(re['Buffer']['Password']['MinPasswordAge']['LowPart']),
int(re['Buffer']['Password']['MinPasswordAge']['HighPart']))
self.__pass_prop = d2b(re['Buffer']['Password']['PasswordProperties'])
domain_lockout = samr.DOMAIN_INFORMATION_CLASS.DomainLockoutInformation
re = samr.hSamrQueryInformationDomain2(
dce, domainHandle=domainHandle,
domainInformationClass=domain_lockout)
self.__rst_accnt_lock_counter = convert(
0,
re['Buffer']['Lockout']['LockoutObservationWindow'],
lockout=True)
self.__lock_accnt_dur = convert(
0,
re['Buffer']['Lockout']['LockoutDuration'],
lockout=True)
self.__accnt_lock_thres = re['Buffer']['Lockout']['LockoutThreshold'] \
or "None"
domain_logoff = samr.DOMAIN_INFORMATION_CLASS.DomainLogoffInformation
re = samr.hSamrQueryInformationDomain2(
dce, domainHandle=domainHandle,
domainInformationClass=domain_logoff)
self.__force_logoff_time = convert(
re['Buffer']['Logoff']['ForceLogoff']['LowPart'],
re['Buffer']['Logoff']['ForceLogoff']['HighPart'])
def __pretty_print(self):
PASSCOMPLEX = {
5: 'Domain Password Complex:',
4: 'Domain Password No Anon Change:',
3: 'Domain Password No Clear Change:',
2: 'Domain Password Lockout Admins:',
1: 'Domain Password Store Cleartext:',
0: 'Domain Refuse Password Change:'
}
print('\n[+] Found domain(s):\n')
for domain in self.__domains:
print('\t[+] {0}'.format(domain['Name']))
print("\n[+] Password Info for Domain: {0}".format(
self.__domains[0]['Name']))
print("\n\t[+] Minimum password length: {0}".format(
self.__min_pass_len))
print("\t[+] Password history length: {0}".format(
self.__pass_hist_len))
print("\t[+] Maximum password age: {0}".format(self.__max_pass_age))
print("\t[+] Password Complexity Flags: {0}\n".format(
self.__pass_prop or "None"))
for i, a in enumerate(self.__pass_prop):
print("\t\t[+] {0} {1}".format(PASSCOMPLEX[i], str(a)))
print("\n\t[+] Minimum password age: {0}".format(self.__min_pass_age))
print("\t[+] Reset Account Lockout Counter: {0}".format(
self.__rst_accnt_lock_counter))
print("\t[+] Locked Account Duration: {0}".format(
self.__lock_accnt_dur))
print("\t[+] Account Lockout Threshold: {0}".format(
self.__accnt_lock_thres))
print("\t[+] Forced Log off Time: {0}".format(
self.__force_logoff_time))
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--username', '-u', help='The specified username')
parser.add_argument('--password', '-p', help='The password of the user')
parser.add_argument('--domain', '-d', help='The domain or IP')
parser.add_argument('--protocols', nargs='*',
help=str(list(SAMRDump.KNOWN_PROTOCOLS.keys())))
parser.add_argument('enum4linux', nargs='?',
help='username:password@IPaddress')
args = parser.parse_args()
if not args.domain and not args.enum4linux:
parser.error('argument --domain/-d is required')
user = args.username
passw = args.password
target = args.domain
if args.enum4linux:
enum4linux_regex = re.compile('(?:([^@:]*)(?::([^@]*))?@)?(.*)')
user, passw, target = enum4linux_regex.match(args.enum4linux).groups()
if '@' in target:
passw = passw + '@' + target.rpartition('@')[0]
target = target.rpartition('@')[2]
if args.protocols:
dumper = SAMRDump(args.protocols, user, passw)
else:
dumper = SAMRDump(username=user, password=passw)
try:
dumper.dump(target)
print('\n')
except KeyboardInterrupt:
print('\n')
print("\n\t[!] Ctrl-C Caught, ByeBye\n")
sys.exit(2)
if __name__ == '__main__':
main()
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