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

# Steganography - Steghide

Steghide steganography notes for extracting hidden files from images or audio, testing passphrases, and validating embedded data during CTFs.

{% hint style="info" %}
Steganography is the technique of hiding sensitive information in seemingly innocuous cover media, which will not arouse suspicion even if it is in plain sight: only a legitimate recipient will know that there is information there for them.
{% endhint %}

### **Steganography analysis with Steghide**

We save the image and analyze it:

1. Checking if the image contains hidden data:

<figure><img src="https://131707722-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>

Checking if the image contains hidden data:

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

<figure><img src="https://131707722-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>

Extraction of hidden data:

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

<figure><img src="https://131707722-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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