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q3k

@q3k@0x3c.pl
  • Open on 0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software.

THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

#nobot

6 Followers
45 Following
5 Posts
Joined November 12, 2020
Location:
Munich, Germany
Pronouns:
he/him
Contact:
https://q3k.org

Posts

Open post
q3k
q3k @q3k@0x3c.pl · Nov 07, 2022
q3k
@q3k@0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software. THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. #nobot

0x3c.pl

Feel like writing an operating system from scratch just to make good use of this knockoff Windows XP wallpaper photo from my last hiking trip in Switzerland.

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Open post
q3k
q3k @q3k@0x3c.pl · Nov 07, 2022
q3k
@q3k@0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software. THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. #nobot

0x3c.pl
Replying to @q3k@0x3c.pl
Full writeup available here: https://blog.dragonsector.pl/2017/10/pwn2win-2017-shift-register.html
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Open post
q3k
q3k @q3k@0x3c.pl · Nov 07, 2022
q3k
@q3k@0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software. THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. #nobot

0x3c.pl
Replying to @q3k@0x3c.pl
Afterwards I could use the individual layers and information about vias between the layers to connect these conductive paths globally, giving me a similarly pretty image of the whole chip (excluding the actual doped silicon regions that make up transistors). Here you can even more clearly see the rows of 'standard cells' fed with two different power supply rails, GND/VSS and VDD.
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Open post
q3k
q3k @q3k@0x3c.pl · Nov 07, 2022
q3k
@q3k@0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software. THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. #nobot

0x3c.pl
Replying to @q3k@0x3c.pl
Of course, now I know there are tools to do this, and this process even has a name: “netlist extraction”. But back then, I had absolutely no idea what was doing, and thus I wrote a very simple tool to do this in an afternoon. Why the colors? I was checking to make sure the individual rectangles of that layer were correctly being 'connected' together into a single conductive path. Rendering that into a .png was the easiest way to make sure it worked, because brains are good at spotting patterns.
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Open post
q3k
q3k @q3k@0x3c.pl · Nov 07, 2022
q3k
@q3k@0x3c.pl

Documenting the hyperfocus episodes of a soul stuck between hardware and software. THIS CONTENT IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. #nobot

0x3c.pl

Throwback to my profile header image, which is still one of my favourite images ever.

It originates from my solution to the Pwn2Win 2017 CTF challenge “Shift Register” by thotypous@birdsite.

Basically, it's a colored rendering of a chip's Metal 1 layer, one of the lowest signal/power connectivity layers in an IC. It's the debug result of my writing a tool to convert a low-level silicon mask format (GDSII) back into a 'netlist', which defines actual connectivity within a chip.

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