TLDR: The blog post chronicles reverse engineering the QText word processor from the 1990s, focused on recovering locked documents by analyzing their encryption and passcode derivation. It details the process of dissecting the MS-DOS executable, understanding the encryption behavior, and eventually deriving the passcode through a custom Python script, emphasizing the challenges and methods used in early software cryptography.
Decoding the 90s: a Journey Into Reverse Engineering and Cryptography in Early Software Development
