> For the complete documentation index, see [llms.txt](https://writeups.ayweth20.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://writeups.ayweth20.com/2025/404ctf-2025/securite-materielle/unidentified-serial-bus-2-2.md).

# Unidentified Serial Bus \[2/2]

**Catégorie:** Sécurité matérielle - **Difficulté:** Difficile

{% file src="/files/d1kh8JyWfEdJAD8fCnUY" %}

**Description:**

<figure><img src="https://4219205392-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fybn4btwQnvitOl9uXz9p%2Fuploads%2FFaPAAlzfC1JJchltRgbf%2Fimage.png?alt=media&amp;token=8a9a03b4-1d5e-4c61-af22-0a4b8b2de038" alt=""><figcaption></figcaption></figure>

Solution:

<details>

<summary>🚩FLAG</summary>

`404CTF{}`

</details>