Use zipinfo -v lucifer.zip or 7z l -slt lucifer.zip to check if it is encrypted.
If the extracted file is an image and the flag is hidden.
I can help refine the password list or identify the specific tool you need to get the flag! picoCTF - CMU Cybersecurity Competition PBI_cra_luciferzip
If this is for a specific CTF event (like a recent picoGym challenge), please tell me: What is the ? What file extensions did you receive (e.g., .zip, .txt)?
The "PBI_cra_luciferzip" (or LuciferZip/Lucifer zip) challenge refers to a or similar CTF forensics/reverse engineering challenge where an encrypted zip file needs to be cracked to find a hidden flag . Overview of the Challenge Use zipinfo -v lucifer
Note: Using the rockyou.txt dictionary file is generally sufficient for piconCTF/picoGym challenges.
Extract a file from an encrypted ZIP archive to obtain the flag (usually in the format picoCTF{...} or similar) . Challenge Type: Forensics / Password Cracking. picoCTF - CMU Cybersecurity Competition If this is
fcrackzip -D -p /usr/share/wordlists/rockyou.txt -u lucifer.zip