Reverse engineering – Purism https://puri.sm/ High-quality computers that protect your freedom and privacy Wed, 01 Oct 2025 18:29:47 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.28 https://puri.sm/wp-content/uploads/2020/04/cropped-purism-logo-rectangle-1-32x32.png Reverse engineering – Purism https://puri.sm/ 32 32 Wrangling the EC: Adventures in Power Sequencing https://puri.sm/posts/wrangling-the-ec-adventures-in-power-sequencing/ Fri, 28 May 2021 20:55:10 +0000 https://puri.sm/?p=71989 As we outlined in a previous post, the Librem 14 is the first Purism laptop to ship with our new, free software Librem-EC firmware for the laptop’s embedded controller (EC). This was a big undertaking, and as with any effort of this magnitude, issues arise in corner cases that often don’t show themselves during developmental […]

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]]> GPS Tuning the Librem 5 Hardware https://puri.sm/posts/gps-tuning-the-librem-5-hardware/ Tue, 15 Sep 2020 08:25:54 +0000 https://puri.sm/?p=69294 Phone Hardware debugging in a duopoly Society is getting pretty used to the idea that the data and applications on phones are completely controlled by large corporations. Purism is working hard to change that with the Librem 5. Because of the market capitalization and duopoly control of the phone OS vendors, the hardware tool vendors […]

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]]> Intel FSP reverse engineering: finding the real entry point! https://puri.sm/posts/intel-fsp-reverse-engineering-finding-the-real-entry-point/ Mon, 02 Apr 2018 13:37:27 +0000 https://puri.sm/?p=48306 2018-05-10 UPDATE: Intel politely asked Purism to remove this document which Intel believes may conflict with a licensing term. Since this post was informational only and has no impact on the future goals of Purism, we have complied. If you would like the repository link of the Intel FSP provided from Intel, please visit their […]

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]]> A Primer Guide to Reverse Engineering https://puri.sm/posts/primer-to-reverse-engineering/ Fri, 17 Nov 2017 20:00:15 +0000 https://puri.sm/?p=43843 Over the years, many people asked me to teach them what I do, or to explain to them how to reverse engineer assembly code in general. Sometimes I hear the infamous “How hard can it be?” catchphrase. Last week someone I was discussing with thought that the assembly language is just like a regular programming […]

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]]> Reverse-engineering the Intel Management Engine’s ROMP module https://puri.sm/posts/reverse-engineering-the-intel-management-engine-romp-module/ Wed, 10 May 2017 16:12:30 +0000 https://puri.sm/?p=18666 Last month, while I was waiting for hardware to arrive and undergo troubleshooting, I had some spare time to begin some Intel ME reverse engineering work. First, I need to give some shout out to Igor Skochinsky, a Hex-Rays developer, who had been working on reverse engineering the Intel ME for a while, and who […]

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