Month: April 2026

Real Linux on Phones?!

Workshop: “Real” Linux on phones?! No phone needed 😉

This workshop is about Linux on phones. We will have a look about what Linux phone projects are out there.

For the workshop we will get our hands dirty with the postmarketOS project. You will build your own “phone-Linux” image for x86/64 that runs with QEMU. For the Desktop Environments you can try different ones, such as KDE Plasma mobile, phosh or others.

In the end I will give a short recap of why I think Linux on phones is a great learning opportunity to look under the hood of embedded Linux.

What: postmarketOS workshop
When: Monday, 18. May 2026, 18:00
Where: XORTEX LBS3, FH3
Who: Markus Hierz

IMPORTANT: We start 1 hour earlier than usual! Workshop language is German.

Hacking around with Frida

Binaries are black boxes. They don’t tell you what they’re doing inside, and they certainly don’t let you change it. Unless you cheat: dynamic instrumentation lets you reach into a running process and mess with it while it’s executing.

This workshop is about Frida, a toolkit that lets you hook into function calls, read their arguments, and swap out return values, all from a JavaScript REPL. We’ll start by poking at binaries with the classics, strace, ltrace, strings and then move on to writing Frida scripts that actually change how programs behave at runtime.

You’ll practice on intentionally simple binaries: bypass a password check, cheat at a score counter, disable anti-debugging. That kind of thing.

Why would you care about any of this?

  • You want to understand what some binary actually does
  • You need logging in production code but can’t recompile it
  • You want to simulate ugly failure conditions without touching your source
  • You’re curious what your own software looks like from the other side

No reverse engineering background needed, just some comfort with the terminal and a rough idea of what C looks like. Bring a laptop with GNU+Linux if you want to follow along.

What: Hacking around with Frida workshop
When: Dienstag, 14. April 2026, 19:00
Where: XORTEX LBS3, FH3
Who: Felix Eberstaller

ErgÀnzende Infos und Updates wie immer auf https://fhLUG.at!

Die Beispiele findet ihr auf https://github.com/f0rw4rd/frida-workshop.