Category Archives: logic analyser

Analyzing The 6502 With Python And Cheap Dev Boards

The Before Times were full of fancy logic analyzers. Connect the leads on these analyzers to a system, find that super special ROM cartridge, and you could look at the bus of a computer system in real time. We’ve come a long way since then. Now we have fast, cheap bits of hardware that can look at multiple inputs simultaneously, and there are Open Source solutions for displaying and interpreting the ones and zeros on a data bus. [hoglet] has built a very clever 6502 protocol decoder using Sigrok and a cheap 16-channel logic analyzer.

This protocol decoder is capable …read more

Continue reading

Posted in 6502, classic hacks, logic analyser, protocol decoder, sigrok, tool hacks | Leave a comment

Dummies Guide to Reverse Engineering

[Juan Carlos Jiménez] has reverse engineered a router — specifically, a Huawei HG533. While that in itself may not sound substantial, what he has done is write a series of blog posts which can act as a great tutorial for anyone wanting to get started with sniffing hardware. Over the five part series, he walks through the details of identifying the hardware serial ports which open up the doors to the firmware and looking at what’s going on under the hood.

The first part deals with finding the one or several debug ports on the hardware and identifying the three …read more

Continue reading

Posted in hardware, HG533, how-to, Huawei HG533, logic analyser, reverse engineer, router, rs-232, serial port | Leave a comment