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Makerspace |
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august 13th, 2021 |
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It's been a while. I've been spending the past year either working from |
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home or being at home in my spare time, except some shorter travels |
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within Norway. Nothing but covid really happened, and I didn't find |
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anything particular to write about. Until I spend last weekend at a |
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small festival at our local makerspace group. |
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The makerspace is situated in the basement of one of the university |
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buildings. There are 3D printers of various kinds, a laser cutter, a |
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CNC and so on. This year they bought a lot of sewing equipment, |
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including an embroidery machine. Lots of cool stuff, if you have some |
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spare time and some creative ideas about what you want to create. |
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Every year there is a small festival going on there, and as last year, I |
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was one of the participants. There were talks about geeky stuff, like |
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rocket building, smart homes with home assistant, but also Docker, |
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NixOS, etc. One of my favorites was CTF, or Capture the flag, which is a |
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digital hunt for "flags" which requires solving various tasks, usually |
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withing web exploitation, cryptography, reverse engineering, etc. This |
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CTF was a little different though, as it also contained questions about |
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the talks. |
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One of the CTF tasks was to decompile and reverse engineer a C program |
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to find out what input it accepts. Attached to the task, there was a |
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Linux binary, and I had only brought my FreeBSD machine (and the wifi |
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was too bad for installing the linux libraries and binaries). So in the |
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end, I solved the task by just reading the assembly code. I haven't |
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touched assembly since my 20s, so that was fun! |
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Back |
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