Category Archives: Reverse-engineering

TRS-80 Model II TRSDOS: paranoia strikes deep

It looks like the developers of TRS-80 Model II TRSDOS were very paranoid that someone might be able to bypass the filesystem and access data on a floppy directly.  I’m not sure if their primary concern was file password protection, … Continue reading

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Reverse-engineering a binary-only Linux library and executable

I’ve been trying to reverse-engineer a particular proprietary binary-only Linux library, to learn what algorithms it uses. Unsurprisingly, the vendor ships both the library and the application that calls it without debugging information and with symbols stripped. However, because they … Continue reading

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