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OS1R!S
37th
place
Solves
Challenge
Category
Value
Time
Warm Up
Warm Up
20
Base64
Warm Up
20
QR
Warm Up
20
Net Cat
Warm Up
20
Secure Shell
Warm Up
20
Beginner Reverse 1
Reverse Engineering
50
Forensics Warm Up 1
Forensics
20
What is ROT?
Cryptography
50
Web warmup
Web
20
Patience Test
Warm Up
300
Discord
Warm Up
10
Where is the flag?
Web
20
Julius Caesar
Cryptography
100
Year 1993 by Urban Müller
Cryptography
300
I am Samuel Morse!
Cryptography
100
I am Samuel Morse 2!
Cryptography
200
Beware of SHA1rk
Cryptography
20
Xtra ObscuRe Service
Cryptography
20
Recette Secrète
Cryptography
20
E-CryptoBook Service
Cryptography
20
Simple Diffie-Hellman
None
20
Stegnography 1
Steganography
100
Linux Tutorial 1
Linux
20
Simple Overflow
Binary
20
Quick Survey
Warm Up
400
Hex To ASCII
Mini Game
100
The game of NIM
Mini Game
20
Beginner Reverse 2
Reverse Engineering
50
Beginner Reverse 3
Reverse Engineering
50
Auth Me 1.0
Binary
20
Schrödinger's Cat
Miscellaneous
20
Find it!
OSINT
500
Happy CNY!
Miscellaneous
20
Calculator
Miscellaneous
20
F0rgO7_W1Fi_P@$$w0rD
None
20
Secret Message
Miscellaneous
20
Linux Tutorial 2
Linux
20
Linux Tutorial 3
None
20
Linux Tutorial 4
None
20
Forensics Warm Up 2
Forensics
50
File Signature
Forensics
20
Shark Of Wire
Forensics
20
File Signature 2
Forensics
20
Corrupted Image
Forensics
20
IQ Test
Cryptography
20
Kuki Cookies
Web
20
Secret Url
Web
20
Kuki Cookies 2
Web
20
Forgot Password
Web
20
My First XSS
Web
20
My First SQL
Web
20
Forgot Password 2
Web
20
Admin Dashboard 2
None
20
Dot Dot Slash
None
20
Forgot Password 3
None
20
Slot Machine
Web
20
Dot Dot Slash 2
None
20
Juggling Clown
Web
20
Beginner Reverse 4
Reverse Engineering
50
Beginner Reverse 5
Reverse Engineering
50
Beginner Reverse 6
Reverse Engineering
50
nogard 1
None
20
Stegnography 2
Steganography
150
Stegnography 3
Steganography
200
A Thousand Words
Steganography
20
Secret Letter
Steganography
20
What5Th3Pa55Cod3?
Reverse Engineering
20
Ular Challenge 1
None
20
Simple RSA
Cryptography
20
Simple RSA 2
Cryptography
20
Simple Diffie-Hellman 2
None
20
Format String
Binary
20