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# PNG : Drôles de chimères \[2/4]
{% file src="/files/XOvSF06YofrHaS48zz9Q" %}
**Category:** Steganography - **Points:** 930 - **Difficulty:** Medium - **Solves:** 230
**Description:**
Il semblerait que votre dernière analyse ait été fructueuse, mais nos analystes trouvent encore à redire. Il faudrait aller plus loin dans vos recherches et comprendre pourquoi la structure du fichier que vous nous avez remis leur paraît étrange, même si elle est parfaitement valide.
**Solution:**
For the second step, we can notice a strange chunk in the image structure. So I used TweakPNG to extract the faulty chunk, which was in fact an image. I then had to modify the header of the image in order to obtain a new repaired png, the one for the next step, containing the flag.
🚩 FLAG
```
404CTF{7h47_v1c10us_m1zzing_z19natur3}
```
---
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