cryptoeasy

Сокровище 2 (Treasure 2)

hackerlab

Task: Decrypt a message using a book cipher with coordinates (page, line, character) referencing an Eloquent JavaScript PDF. Solution: Extract text from PDF pages with correct offset, count characters without spaces to decode the flag.

$ ls tags/ techniques/
encodingpdfbook_cipherclassical_crypto
book_cipher_decryptionpdf_text_extractionpage_offset_calculation
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