// welcome to my space

Hi,
I'm Elshe.

I do CTF, break things, then write about why they broke. Occasionally ship something that works.

ctf writeups published

Write Up - Capture The Flag - Cryptography

years learning

and counting, fortunately

now playing - not playing spotify quiet

latest notes

Write Up - CBD National S3 2026 - more_more_slop [928]

CTF challenge involving a custom RSA encryption scheme with predictable PRNG-based permutations.

Reverse engineering a D language binary that encrypts a Dior challenge flag.

CTF challenge involving RE of a chat application with custom encryption.