Methodology for Reverse Engineering Yaesu FT-70D Firmware Encryption
By
austinallegro
If you only eat one bagel today, this is the bagel.
Summary
This article provides a detailed, accessible methodology for reverse engineering the firmware encryption of the Yaesu FT-70D ham radio. The author documents their complete process of analyzing the radio's firmware, including initial research, hardware examination, firmware extraction, encryption analysis, and ultimately discovering and documenting the encryption algorithm. The article is written as a technical guide aimed at making reverse engineering accessible to those who aren't advanced practitioners, with step-by-step explanations and visual documentation.
Key quotes
· 5 pulledHam radios are a fun way of learning how the radio spectrum works, and more importantly: they're embedded devices that may run weird chips/firmware!
I got curious how easy it'd be to hack my Yaesu FT-70D, so I started doing some research.
The only existing resource I could find for Yaesu firmware was a brief mention in a forum post.
This article dives into my full methodology for reverse engineering the tool mentioned in this article.
It's a bit longer but is intended to be accessible to folks who aren't necessarily advanced reverse-engineers.
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