• 20150708_140607
    Reverse Engineering

    Old school EPROM firmware dumping

    A few years ago, I managed to get hold of something I only barely knew as a Wersi MK1, an extremely rare West-German synth from 1986. The MK1 faded into obscurity due to its notoriously difficult interface, bad marketing and manufacturer bankruptcies. But in fact, it was one of the first incredibly well engineered digital…

  • Onyx: The Black Cat anti-anti-debugging kit
    Reverse Engineering

    A short introduction to anti-anti-debugging on OS X

    If you’re familiar with reverse engineering software, you may have stumbled upon the magic world of anti-debugging and obfuscation. Anti-debugging protection is often built into software that is a likely target for reverse engineering, as a tactic to hamper any efforts in that area. Many techniques exist to avoid proper functioning of a (software-based) debugger,…

  • Quick 'n dirty 2 minute PCI-Express PCB
    PCB design

    Quick ‘n dirty 2 minute PCI-Express PCB

    For those of you who would like to see some simple PCB design in action, read on! I did a quick $5.00 PCB design job yesterday for a hardware project I am currently working on, and made a quick timelapse video for whoever’s interested in seeing how the design process in Cadence Allegro works. Since I’m a…

  • 4 phase shifted clocks

    Extreme phase shifting part 1

    As part of a high-tech hardware project I have been working on I have lately been diving into the area of clock signals. Now books have been written on the subject of clocks, clock distribution, clock skew, clock gating, and much more things involving the word ‘clock’, but my specific problem was a little unusual….

  • mmtool3
    Reverse Engineering

    How to quickly rip apart a UEFI firmware

    Imagine this. It’s been a couple of months since you upgraded your trusty laptop with a good old SSD, the speed is fair but there’s just something wrong. Hibernation is taking ages, but why? You rip your firmware apart and find out they’ve crippled your S-ATA controller.. Enter the Panasonic Toughbook CF-19 MK3, one of…

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