│ Category: Reverse Engineering
│ Difficulty: Medium
│ Points: 200
│ Author: Imattas aka Zemi
│ Challenge ID: 83
│ Solves: 331
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--[ Challenge Description ]--
-- text --
Subject: Urgent - John's computer is acting up again
To whom it may concern,
John said that he downloaded a financial report for this quarter, yet now his computer has a "virus". He says that all of his files suddenly have a weird double extension. Like they all have ".boroCTF" appended onto them.
Can you help figure out what happened? Probably pirating video games again if you ask me.
Thanks,
Jill
**Note** - This challenge does **NOT** contain any functional malware.
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--[ Provided Materials ]--
:: Files
- Source file 1
https://boroctf.com/files/517bf860f00e7b6fa3769176ac072aea/financial_report
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--[ Recon / Initial Analysis ]--
This archive-style writeup preserves the official prompt and materials from
BoroCTF challenge 104. The numbered source file did not include expanded solve
notes for approach, findings, or flag, so this page keeps the verified challenge
material without adding unverified exploit steps.
Use the prompt, connection details, and any listed files above as the starting
point for a replay or future expanded solve.
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--[ Exploitation / Solution ]--
No solve transcript was present in the numbered source file. If a verified solve
is added later, this section should be replaced with the actual commands,
payloads, scripts, and final flag path.
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--[ Key Takeaways ]--
- The challenge prompt and provided materials are preserved in the site's
BoroCTF archive.
- The page avoids inventing solve details where the source entry only contained
scaffolded note fields.
- Author metadata is normalized to Imattas aka Zemi.