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secursig

dumping serial SPI and I2C chips

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secursig

thought I would post this since it's extremely useful for working on some embedded targets. the basic principle is you use a cheap logic analyzer to intercept read requests to the chip ( usually from the microprocessor of your target ) since some designs they store special information in small chips on PCB, like serial number, password, settings, etc. after the CPU reads all the addresses its interested in over the SPI or I2C bus your logic analyzer sees the waveforms and captures the data. then this utility will convert the logic analyzer file to a binary dump of the chip by reconstructing the flash memory contents so you can see what's inside and load into IDA. very useful :)

 

source code and intro

https://github.com/alainiamburg/sniffROM/wiki/Getting-Started

https://github.com/alainiamburg/sniffROM

saleae1.thumb.png.174c4587fb4f1bdc06d06152843dfa21.png

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