Write-up format:

🧩 Challenge Writeup:

Category: <Crypto | Web | Reverse | PWN | OSINT | Forensics | Stego | Misc>
Event: <CTF Name (e.g., LakshyaCTF 2025)>
Points: XXX
Author: <Your Name / Team Name>
Flag Format: flag{}

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🧠 Challenge Description

(Paste the challenge prompt exactly as given.) Include any hints, cryptic phrases, or storylines provided in the problem.

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📁 Provided Files

Link the challenge's files as follows:

- 🔗 [Example Download Attachment](../../attachments/example.zip)

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🧩 Step-by-Step Solution

🔍 1. Recon & Observation

Explain what you observed when opening the file, running the binary, viewing the source code, etc.

🔧 2. Analysis / Exploit

Break down what techniques you used: - Reversing the binary - Decoding ciphertexts - Analyzing file structure or metadata - SQL injection - Extracting stego layers - Exploit debugging steps

Include code or terminal blocks as needed:

strings binary
gdb ./challenge

# Example decode script
print(bytes.fromhex("48656c6c6f").decode())

🧩 3. Flag Extraction

Explain the final step that led you to the flag. This could be decoding output, brute-forcing a password, or finding a hidden string.

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🏁 Final Flag

flag{your_final_flag_here}

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💡 Notes / Reflection

(Optional) Add what you learned, what tripped you up, or alternate methods to solve the same challenge.