cryptomedium

Hybrid

hackerlab

Task: Two password-protected ZIP archives using ZipCrypto Store encryption, each containing a part of the flag. Solution: Crack the second archive via dictionary attack (qwerty123), then use bkcrack known-plaintext attack on the first archive by guessing the content prefix from the second file's format.

$ ls tags/ techniques/
zipknown_plaintextpassword_crackingdictionary_attackbkcrackzipcryptostore_encryptionpkware
zipcrypto_known_plaintext_attackdictionary_password_crackinghybrid_wordlist_attackcrc_based_password_verificationcontent_format_guessing
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