forensicsProeasy
Brute_force
bug-makers
Task: a password-protected (AES-encrypted) PDF whose password is the release date of a popular song in dd.mm.YYYY format. Solution: instead of guessing the song, brute-force the entire date keyspace (1950-2025, ~27,700 candidates) with pikepdf, recover 27.07.1987 (Never Gonna Give You Up), then decrypt with qpdf and extract the flag.
$ ls tags/ techniques/
pdf_password_crackingpdf_text_extractiondate_format_brute_forceconstrained_keyspace_brute_force
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