The challenge description says "weird emulator...." which indicates that it is probably something about qemu to solve the challenge. After googling for 20 minutes I've found this writeup to a similiar challenge: https://devcraft.io/2018/12/10/green-computing-hxp-ctf-2018.html#green-computing-1
I've started qemu on my local computer, loaded the provided linux kernel image from channel and dumped the physical memory to a file. Seaching in the file for CSR{ gave me an offset which I used on the remote machine to dump the physical memory to console