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A valid **TGT as any user** can be created **using the NTLM hash of the krbtgt AD account**. The advantage of forging a TGT instead of TGS is being **able to access any service** (or machine) in the domain and the impersonated user.\
Moreover the **credentials** of **krbtgt** are **never****changed** automatically.
The **krbtgt** account **NTLM hash** can be **obtained** from the **lsass process** or from the **NTDS.dit file** of any DC in the domain. It is also possible to get that NTLM through a **DCsync attack**, which can be performed either with the [lsadump::dcsync](https://github.com/gentilkiwi/mimikatz/wiki/module-\~-lsadump) module of Mimikatz or the impacket example [secretsdump.py](https://github.com/SecureAuthCorp/impacket/blob/master/examples/secretsdump.py). Usually, **domain admin privileges or similar are required**, no matter what technique is used.
It also must be taken into account that it is possible AND **PREFERABLE** (opsec) to **forge tickets using the AES Kerberos keys (AES128 and AES256)**.
**Once** you have the **golden Ticket injected**, you can access the shared files **(C$)**, and execute services and WMI, so you could use **psexec** or **wmiexec** to obtain a shell (looks like yo can not get a shell via winrm).
The most frequent ways to detect a golden ticket are by **inspecting Kerberos traffic** on the wire. By default, Mimikatz **signs the TGT for 10 years**, which will stand out as anomalous in subsequent TGS requests made with it.
Use the `/startoffset`, `/endin` and `/renewmax` parameters to control the start offset, duration and the maximum renewals (all in minutes).
```
Get-DomainPolicy | select -expand KerberosPolicy
```
Unfortunately, the TGT's lifetime is not logged in 4769's, so you won't find this information in the Windows event logs. However, what you can correlate is **seeing 4769's **_**without**_** a prior 4768**. It's **not possible to request a TGS without a TGT**, and if there is no record of a TGT being issued, we can infer that it was forged offline.
In order to **bypass this detection** check the diamond tickets:
[**More information about Golden Ticket in ired.team.**](https://ired.team/offensive-security-experiments/active-directory-kerberos-abuse/kerberos-golden-tickets)
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- **Share your hacking tricks by submitting PRs to the [hacktricks repo](https://github.com/carlospolop/hacktricks) and [hacktricks-cloud repo](https://github.com/carlospolop/hacktricks-cloud)**.
