WORLDTECHReconstructing Device Firmware from SPI Reads
Single source: this development was reported by Hackaday. What WORLDTECH can establish is that the report was made, and by whom. It has not been matched against a second independent organisation and has not been officially confirmed by the organisations involved.
What happened
Once he’s covered the basics and captured some data moving across the SPI bus, [wrongbaud] moves on to decoding it with Scapy. The powerful Python tool is most commonly associated with the manipulation of network packets, but as demonstrated here, it can be turned loose against other types of data.
In a recent write-up , [wrongbaud] explains the process of identifying, capturing, and ultimately decoding the SPI read operations used to load the firmware from a common W25Q-series flash chip at boot time. Armed with the output from his logic analyzer and the datasheet for the flash chip, he explains how to interpret the various signals at play.
Even if you’re not terribly interested in slurping the firmware from mystery boxes, it’s a great primer on how SPI works and a fascinating read for anyone who’s looking for a better understanding of how chips talk to each other. If this is the first time you’ve run across [wrongbaud]’s work, you’re in for a treat.
Sources & evidence
- Hackaday Reporting source
Reconstructing Device Firmware from SPI Reads ↗
https://hackaday.com/2026/09/24/reconstructing-device-firmware-from-spi-reads/