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Monthly Archives: January 2016
Reverse-engineering Lyric file format – handling encryption with a known plaintext attack
This article explains how to reverse-engineer file formats by using what is called a known plaintext attack. This is a kind of attack when an attacker has an ability to pass the plaintext to the oracle (in our case the enryption algorithm) and receive back the encrypted text, and do it as many times as […]
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Reverse-engineering the EMZ karaoke format, or watch out the API calls
Worked on adding support for the EMZ karaoke format to the Karaoke Player application, and would like to share another good reverse-engineering technique. EMZ is a Karaoke format similar to the old Karafun, based on a password-protected ZIP archive. Unlike Karafun, the password is not embedded into the archive, but is derived from a some […]