│ Category: OSINT
│ Author: Imattas aka Zemi
│ Flag: byuctf{La_B0c4_Wa5_Gr4nd3}
│ Source Path: osint/czechxicans
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--[ Challenge Description ]--
-- text --
When Cameron Snider was living in Europe like a dirty heathen, he used to frequent a popular Mexican restaurant. It was actually really good food. It's quite a shame that it closed down a few years ago. I'd love to go back. I think I left a Google review on the restaurant next door that is still up.
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--[ Provided Materials ]--
- Repository folder
https://github.com/BYU-CSA/BYUCTF-2025/tree/main/osint/czechxicans
- osint/czechxicans/README.md
https://github.com/BYU-CSA/BYUCTF-2025/blob/main/osint/czechxicans/README.md
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--[ Recon / Initial Analysis ]--
This page imports the BYUCTF 2025 source material for the OSINT challenge
Czechxicans. The prompt is kept separate from the solve notes, and upstream
artifacts are linked so the challenge can be replayed from the original
repository.
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--[ Vulnerability / Observation ]--
The useful observation comes from the imported solve notes below. I kept the
original technical path intact while normalizing the page metadata, challenge
grouping, and author attribution for the Volume 2 writeup archive.
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--[ Exploitation / Solution ]--
Source: osint/czechxicans/README.md
https://github.com/BYU-CSA/BYUCTF-2025/blob/main/osint/czechxicans/README.md
1. This one is just finding what country I lived in (not hard).
2. Next, you can just search for Mexican restaurants in the city of Olomouc that
have closed in the last few years.
3. Finally, search through the google reviews of the cafe literally next door,
and mine should be at the top with the flag.
Link to review: https://maps.app.goo.gl/a7LjsBCLQC8NuMzy6
Flag - byuctf{La_B0c4_Wa5_Gr4nd3}
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--[ Full Exploit Script ]--
No standalone exploit script was present in the selected source material.
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--[ Key Takeaways ]--
- The BYUCTF 2025 challenge material is preserved with local archive formatting.
- The page author is normalized to Imattas aka Zemi.
- The source repository remains linked for handouts, services, and solve
artifacts.