CTF challenges I created and their writeups (most of them).
NCKUCTF Freshmen Cup (成大新生盃) 8 reverse/pwnable beginner friendly challenges.
AIS3 Pre-exam & MyFirstCTF
Challenge
Category
Keywords
base64encoder
Pwn
array out-of-bound read, return to win
base64note
Pwn
CVE-2018-6789, use after free, heap off by one, code execution on glibc 2.35, libc GOT Hijacking
Challenge
Category
Keywords
babypwn2024-nerf
Pwn
Stack pivoting, return to libc, one gadget
zero_to_hero_revenge
Pwn
Glibc 2.35 tcache double free, safe linking bypass, GOT Hijacking
NCKUCTF Freshmen Cup (成大資安社期初新生盃 CTF)
Challenge
Category
Keywords
Baby Python Assembly
Rev
Python Assembly
babyheap
Pwn
Glibc 2.23 fastbin double free, malloc hook trick, one gadget
babyRSA
Crypto
RSA
E
Crypto
RSA, Common Modulus Attack
Every pwner's first challenge
Pwn
Return to win, ret2win, ret2text, return to text
Good hacker's website
Web
PHP, Upload Bypass
Good hacker's website Revenge
Web
PHP, Upload Bypass
Overflow Tutorial
Pwn
Integer overflow, buffer overflow
Yet Another Username and Password Checker Revenge
Pwn
Return to shellcode, ret2sc, getdents, orw
We are good hackers
Misc
LSB steganography, ASCII
Challenge
Category
Keywords
Celerity Glide Google Chrome
Pwn
Turboshaft type confusion, v8 pwn, browser exploitation, v8 sandbox escape 330404819
Challenge
Category
Keywords
Re:Sandbox
Pwn
v8 sandbox escape, browser exploitation, 330404819 patch bypass via issue 344963941
Challenge
Category
Keywords
localstack
Pwn
oob, ret2win, ret2text, bypass all protections, out of bound
globalstack
Pwn
free hook, out of bound, oob
babyrust
Pwn
rust pwn, ROP
AIS3 Pre-exam & MyFirstCTF
Challenge
Category
Keywords
Welcome to the World of Ave Mujica
Pwn
return to win
AIS3 Tiny Web Server
Misc / Rev / Pwn
Real world, 1 day, web server in C, ret2libc, backdoor(?), xor encryption, LFI
Challenge
Category
Keywords
easiest_pwn
Pwn
checkin, ret2win
ret2sc
Pwn
ret2shellcode
zero-to-hero-2
Pwn
UAF, Use After Free, Free Hook
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