$ ctf42

NCTF 2026

official repo

The NCTF organized by the X1cT34m team from Nanjing University of Posts and Telecommunications is divided into two tracks: on-campus and off-campus. It aims to enhance cybersecurity awareness and cultivate practical skills for future cybersecurity professionals. We sincerely invite CTFers from both on-campus and off-campus, as well as from around the world, to join this technical feast.

Thanks to 林枫云 for providing server support for this competition Thanks to Cyberwave for sponsoring the awards, who provides a complete cybersecurity learning environment including capture the flag challenges, penetration testing labs, vulnerable machines, cyber range simulations and structured ethical hacking courses.

Web 1

Challenge Has
OpenShell files

Pwn 3

Challenge Has
VFS_Stack files
checkin files
ezheap files

Reverse 3

Challenge Has
Master_of_the_Chicken_Claw_Style files
Pay_For_2048 files
VM_Encryptor files

Crypto 4

Challenge Has
Encryption files
Ez_RSA files
Hard_RSA files
yqs files

Misc 1

Challenge Has
ezProtocol files