CyberSecurityRumble 2021

The (Cyber) CyberSecurityRumble Germany is back!

The CSR this year will be a 48h online Jeopardy style CTF. Max Team size is 6 Hackers! Everybody is allowed to participate online.

Again we'll have tasks in all categories: pwn, rev, crypto, web, ... from beginner friendly to 31337!

Next year we'll hopefully have an onsite final again!

Web 1

Challenge	Has
EFS	files

Challenge	Has
Powerhell	files
baby_flag_checker	files
bufctl	files
finance_calculat0r_2021 #python-sandbox #function-whitelist-bypass #import-alias	files wu 1
getstat #stack-buffer-overflow #negative-size #float-encoded-address #ret2win	files wu 1
orderly_storage	files

Challenge	Has
no_debanking	files

Challenge	Has
Personal_Encryptor_with_Nonbreakable_Information-theoretic_Security	files
payback #http-parameter-pollution #duplicate-parameter #logic-flaw	files wu 2
result #pdf-encryption #pdf2john #zipcode-bruteforce	files wu 3
ssh-bank	files