Start by running the file command to confirm the file type. file spookytimes_2-pc.zip
If the flag appears as a string of random characters (e.g., ZmxhZ3tnMDBkX2pvYn0= ), it is likely Base64 encoded. Use a decoder to reveal the cleartext. Conclusion
Check the EXIF data of any images found inside using exiftool . Often, clues or parts of the flag are hidden in the Comment or Artist tags. File: spookytimes_2-pc.zip ...
Upon extraction, you typically find a set of files (often images or text files) that require further investigation:
The flag is typically formatted as flag... or CTF... . Once found, document the exact steps taken—from the initial unzip command to the specific tool used for extraction—to complete the write-up. Start by running the file command to confirm the file type
If the zip contains nested layers (a zip within a zip), you may need to script a solution to recursively unzip the files until you reach the final payload.
Extract the contents of the zip file and identify the hidden flag. Phase 1: Initial Triage Conclusion Check the EXIF data of any images
Extract the files. If prompted for a password, common CTF passwords like "infected", "password", or "spooky" may be required, or the password might be found in a related challenge description. Phase 2: Analysis