c0dbat

28th place

Solves

Challenge	Category	Value	Time
File Signature	Forensics	20
Stegnography 1	Steganography	100
Stegnography 2	Steganography	150
A Thousand Words	Steganography	140
File Signature 2	Forensics	242
Secure Shell	Bonus	20
Simple Overflow	Binary	20
Secret Letter	Steganography	487
Julius Caesar	Cryptography	100
Warm Up	Bonus	20
Base64	Bonus	20
I am Samuel Morse!	Cryptography	100
I am Samuel Morse 2!	Cryptography	200
Net Cat	Bonus	20
Corrupted Image	Forensics	287
Forensics Warm Up 2	Forensics	50
QR	Bonus	20
Year 1993 by Urban Müller	Cryptography	300
What is ROT?	Cryptography	50
Forensics Warm Up 1	Forensics	20
Secret Message	Miscellaneous	167
Stegnography 3	Steganography	200
Find it!	OSINT	500
The game of NIM	Mini Game	82
Qu1ck M47h5	Mini Game	364