15 ms·

> My dream is to intercept the write-enable lines on the flash chips holding these firmwares so I can lock out updates. And schedule a daily reboot for any memo

> My dream is to intercept the write-enable lines on the flash chips holding these firmwares so I can lock out updates. And schedule a daily reboot for any memory-resident-only crap. There was an open hardware project for SD card emulation, where the emulator could reject writes, https://github.com/racklet/meeting-notes/blob/main/community/2021.md https://github.com/racklet/meeting-notes/blob/main/community... OSS emulation for SPI flash, https://trmm.net/Spispy/ https://trmm.net/Spispy/ Some USB drives (Kanguru) and SSD enclosures (ElecGear M.2 2230 NVME) have firmware and physical switch to block writes, useful to boot custom "live ISOs" that run from RAM.

Scoundreller 2y ago
Eventually in the satellite world, card emulators took over and only the receiver was a vector of attack, but then the receivers started getting simulated too. The nice thing about emulators is that you could intercept calls that you wanted and send your own response while still taking any and all updates. Hard to break when you have more control than they do.
ThePowerOfFuet 2y ago
> Some USB drives (Kanguru) and SSD enclosures (ElecGear M.2 2230 NVME) have firmware and physical switch to block writes, useful to boot custom "live ISOs" that run from RAM. For the rest of us, there's Ventoy. https://www.ventoy.net/ https://www.ventoy.net/