Regarder en stereo
![[stereo_enonce.png]](https://raw.githubusercontent.com/Nouman404/nouman404.github.io/main/_posts/CTFs/404_CTF_2024/Steganographie/Photos/stereo_enonce.png)
The image we have doesn’t look like anything I’ve ever seen:
![[chall_stega.png]](https://raw.githubusercontent.com/Nouman404/nouman404.github.io/main/_posts/CTFs/404_CTF_2024/Steganographie/Photos/chall_stega.png)
First, I searched “Regarder en stereo” online. I found this link about crossed vision and it was talking about a technique called autostéréogramme that looks like what we have:
![[stereo_requin.png]](https://raw.githubusercontent.com/Nouman404/nouman404.github.io/main/_posts/CTFs/404_CTF_2024/Steganographie/Photos/stereo_requin.png)
I searched an online tool that could manage to do that and fond this one:
![[stereo_flag.png]](https://raw.githubusercontent.com/Nouman404/nouman404.github.io/main/_posts/CTFs/404_CTF_2024/Steganographie/Photos/stereo_flag.png)
So the flag is (idk if you can read on the screenshot lmao) 404CTF{END_IS_NEAR}.