> 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/useful-resources/forensics/steganography-steghide.md).

# Esteganografía - Steghide

Notas de esteganografía con Steghide para extraer archivos ocultos de imágenes o audio, probar frases de contraseña y validar datos incrustados durante CTFs.

{% hint style="info" %}
La esteganografía es la técnica de ocultar información sensible en medios portadores aparentemente inocuos, que no despertarán sospechas aunque esté a plena vista: solo un destinatario legítimo sabrá que hay información allí para él.
{% endhint %}

### **Análisis de esteganografía con Steghide**

Guardamos la imagen y la analizamos:

1. Comprobando si la imagen contiene datos ocultos:

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-6b4ca11ae1f050ecbfcd4dd668907d447cef1326%2F%7BBF3E2B46-EBEB-41D5-AB60-F14D12C229A1%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

Comprobando si la imagen contiene datos ocultos:

```bash
steghide info image.jpg
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-25bafbe8c5377ac368938e0bf667b9418b09be92%2F%7BB61AC2D5-D35E-4808-9E7E-C44BA34BA105%7D.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

Extracción de datos ocultos:

```bash
steghide extract -sf image.jpg
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-58db1cc7ea2d9cee8ab957d4376b054382d83e9f%2F%7B1ED250B8-3960-43F4-A11F-9FCC21581E8B%7D.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>


---

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