SCHULZ:DK

One person – many ideas!

2022

26

Jan

CVE-2021-4034 – my PoC for PwnKit

I made a Proof of Concept exploit (two actually) for the new Polkit CVE posted yesterday. Find a description and code here.

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26

Jan

Using ctrl-z to toggle process in fg/bg

This is just a simple trick to get ctrl-z in bash to toggle a process between foreground and background.
A small but useful idea.

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2021

25

Oct

Using core dumps for Linux privilege Escalation

A new vulnerability has been discovered that makes it possible to get a privilegded process to core dump in a restricted area.
This can via a few nifty tricks be abused to gain root access to a linux system

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01

Sep

Hacking for a job (or just for fun)

The cyber crime unit of the Danish police has put out a boot2root box to find relevant applicants for a job as web specialist.
I could not resit trying it out.

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21

Jun

Free world-wide Wifi for all IPhones (or how to trash the IPhone wifi settings)

What happens if you put a funky format string as SSID for your wifi AP? For IPhones it can have an unexpected outcome.

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04

Jun

Who shares private social security number online?!?!

Have you ever shared a picture of your Danish social security card (in Danish: sundhedskortet) online? Maybe with a finger across to cover the secret number?
Think you’re safe from identify theft? probably not!

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19

Mar

Try Hack Me – 100 days after

I started the endeavour into the world of online hacking training/games back in December. Now, 100 days later, I will give a short update.

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26

Jan

Bash faulty pasting tip

Have you ever pasted some random multi-line text to the bash shell ? If you have, then you will know how annoying this is. So here is the fix!

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2020

04

Dec

Computer Security – for fun and profit

So I have been interested in computer security, hacking, cracking, preaking and everything around it since my early teenage years. It has mostly been for the fun of it and not something I would use for bad things. Back in the early days (mid-90es) security was just beginning to be a thing so defacing a […]

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01

Sep

OpenSSH logos

Official U2F/FIDO support in OpenSSH

U2F/FIDO2 support is now officially available in OpenSSH.

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