Offcial Writeup:

https://xz.aliyun.com/news/17029

Offcial Writeup (pdf):

阿里云CTF官方WP.pdf

Pwn:

Alimem: [4 solves]

A module full of bugs

(Note: This chal has remote instance)

Alimem.zip

runes: [4 solves]

Show me your runes.

(Note: This chal has remote instance)

Hint:
1. No intended vulnerability in the bzImage/kernel, please exploit the userspace chal binary.
2. As the challenge's name implies, you need to focus on the `syscall` aka rune in this challenge. Find a way to **weaken the dark dragon's power** once your character becomes strong enough.
3. All syscall numbers(系统调用号) used in the intended solution are under 200 and relatively well used.

runes.tar.gz

broken_compiler: [4 solves]

Before working on the real-world challenge, let's warm up first. Write your C program to read /flag. Please have a look at `README` in the attachment first.

(Note: This chal has remote instance)

broken_compiler.zip

broken_simulator: [2 solves]

Have you ever PWNED a real-world project? Write your mips assembly to get /flag. Please have a look at `README` in the attachment first.

(Note: This chal has remote instance)