GitHub – chip-red-pill/MicrocodeDecryptor
Posted by jpluimers on 2024/09/18
A few years back the way Intel Microcode updates were distributed deciphered so it became possible to extract and research the microcode of some processor models.
Repository: [Wayback/Archive] chip-red-pill/MicrocodeDecryptor
Disclaimer
All information is provided for educational purposes only. Follow these instructions at your own risk. Neither the authors nor their employer are responsible for any direct or consequential damage or loss arising from any person or organization acting or failing to act on the basis of information contained in this page.Description
At the beginning of 2020, we discovered the Red Unlock technique that allows extracting Intel Atom Microcode. We were able to research the internal structure of the microcode and then x86 instruction implementation. Also, we recovered a format of microcode updates, algorithm and the encryption key used to protect the microcode (see RC4).
Tweet: [Wayback/Archive] Maxim Goryachy on Twitter: “Today we’ve published Intel Microcode decryptor! It gives you an amazing opportunity for researching x86 platforms. You can understand how Intel mitigated spectre vulnerability, explore the implementation of Intel TXT, SGX,VT-x technologies! Enjoy it! github.com/chip-red-pill/MicrocodeDecryptor“
–jeroen
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