│ Category: Forensics
│ Author: Imattas aka Zemi
│ Flag: byuctf{n0w_th4t5_s0m3_5u5_l00k1ng_p0w3rsh3ll_139123}
│ Source Path: forensics/wimdows/README.md#wimdows-2
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--[ Challenge Description ]--
-- text --
This challenge uses the same files as for Wimdows 1.
Once they got in, the attacker ran some commands on the machine, but it looks like they tried to hide what they were doing. See if you can find anything interesting there (your answer will be found already in `byuctf{}` format).
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--[ Provided Materials ]--
- Repository folder
https://github.com/BYU-CSA/BYUCTF-2025/tree/main/forensics/wimdows
- forensics/wimdows/README.md
https://github.com/BYU-CSA/BYUCTF-2025/blob/main/forensics/wimdows/README.md
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--[ Recon / Initial Analysis ]--
This page imports the BYUCTF 2025 source material for the Forensics challenge
Wimdows 2. 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: forensics/wimdows/README.md https://github.com/BYU-CSA/BYUCTF-2025/blob/
main/forensics/wimdows/README.md#wimdows-2
Check Windows Event Log. There are PowerShell logs with base64-encoded commands.
There's a flag hidden in one of them.
Flag - byuctf{n0w_th4t5_s0m3_5u5_l00k1ng_p0w3rsh3ll_139123}
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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.