Post B59nSvC5UQ42SOgi0W by infosecdj@infosec.exchange
 (DIR) More posts by infosecdj@infosec.exchange
 (DIR) Post #B59nSu2plL4GtPLnwe by infosecdj@infosec.exchange
       2026-04-10T16:50:38Z
       
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       Well hello and welcome to #nakeddiefriday -- the second one in April.My pleasure to introduce you the guest of today: ATSAMA5D26C by Atmel. This is a SoC with one Cortex-A5 core and a boatload of peripherals.Full-res map: http://infosecdj.net:8086/map/atmel/atsama5d26c-cu/infosecdj_mz_nikpa40x/#electronics #reverseengineering #icre #microscopy
       
 (DIR) Post #B59nSvC5UQ42SOgi0W by infosecdj@infosec.exchange
       2026-04-10T16:52:37Z
       
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       I took the liberty of removing the top aluminium layer which got stripped almost completely.Note the colours; as it would seem, this is likely to be a copper process. The lower layers never shone the classic silver.Full-res map: http://infosecdj.net:8086/map/atmel/atsama5d26c-cu/infosecdj_my_nikpa40x_d1/
       
 (DIR) Post #B59nSwKdG8UdzBh2xs by infosecdj@infosec.exchange
       2026-04-10T16:56:55Z
       
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       One particularly noteworthy feature of this die is, they put mask ID markings in Morse code. These are located along the top edge of the image.
       
 (DIR) Post #B59nT0wM7p2sHLNEJs by infosecdj@infosec.exchange
       2026-04-10T16:58:48Z
       
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       I have a bit of history with the chips of this series. Previously I had a look from the power analysis angle: https://labs.withsecure.com/advisories/microchip-atsama5-soc-multiple-vulnerabilities-full-releaseThe point of the exercise thus is to locate the ROM on this die.