ipv6-feet-under / writeups-s.h.e.l.l.ctf21

SHELLCTF 2021 WriteUps. A beginner-friendly CTF with an objective to get the enthusiastic students familiar with the basics, along with a few hard and fun challenges for the professionals.

Thanks to shellpwn for hosting S.H.E.L.L. CTF 2021

Name	Weight	Category
Cyber Attack 1	200	Puzzle
Cyber Attack 2	200	Puzzle
Cyber Attack 3	500	Puzzle
Cyber Attack 4	500	Puzzle
anonym	50	Web Security
Under Development	50	Web Security
Collide	100	Web Security
login	200	Web Security
Fun with Tokens	500	Web Security
Hidden Inside	50	Forensics
Cold Compress Inside	100	Forensics
Hidden Inside 2	200	Forensics
Grass is green	350	Forensics
Hidden Inside 3	500	Forensics
encoder	50	Cryptography
EASY-RSA	50	Cryptography
Algoric-Shift	50	Cryptography
Subsi	50	Cryptography
haxxor	50	Cryptography
Cjk	100	Cryptography
Poly-Alpha	100	Cryptography
BruteforceRSA	200	Cryptography
arc-cipher	200	Cryptography
PowerRSA	500	Cryptography
Puny Factors	500	Cryptography
Vuln-AES	100	Cryptography
check_flag	50	Reverse Engineering
assembly	100	Reverse Engineering
keygen	100	Reverse Engineering
sakuna	100	Reverse Engineering

*weights values at the start of the CTF, they lost weight dynamically as more teams solved them