Recently, my laptop (an Acer A315-23) decided to randomly enable secure boot and since my linux install is obviously not signed, it proceeded to not boot anymore. Given that I had work to do, I immediately went to disable it, only to realise I had at some point set a password for my UEFI. The only problem: I didn't remember it, only that I had set something simple. And so it happened that I…
A writeup analysing a malware sample of the panchan botnet.
A writeup for the 'FTP++' challenge from the Platypwn 2025.
So, one afternoon, a couple of months ago, I got bored and ended up browsing the dark web. Against my expectations I quickly found myself back on the clear web on an obscure blog whose .onion address had been linked to on a link list. Reading around the blog proved fascinating, not necessarily for the content of it (eventhough there was some interesting stuff there, see artemislena.eu ), but more…
Hi! I'm Jann, a 21 year old computer science student from Germany. I am active in the cybersecurity club of my university (the Platypwnies ) 1 and spend some of my free time contributing to open-source projects, mainly TagStudio . I also maintain a small NAS at home to host some services for myself. Said NAS also collects comment / guestbook submissions on this site for me to review…
E-Mail: jann.stute [ät] protonmail.com Github: Computerdores Gitlab: JannStute Mastodon: @computerdores@chaos.social
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General I currently use GitHub Pages to host the static content of this site so anything transmitted by your browser is subject to whatever they do with it. This may change in the future (e.g. I may decide to self-host it instead). Forms When you submit a form on this website, the following is collected: Any data entered into the form Your IP address Your User Agent String What happens to that…
A writeup for the 'honeypot' challenge from the GPN 2025.
A writeup for the 'echofaas' challenge from the CSCG 2025.
A writeup for a reversing challenge from the 0xL4ugh CTF involving runtime bytecode modification.
A writeup for the 'Archventure Time' challenge from the GPN 2024.
A writeup for a reversing challenge from the 0xL4ugh CTF involving assembly level obfuscation and cross process fault handling.