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Crypto

Descend through the challenges below, from easiest to hardest.

Disobey

Disobey 2026

01

HMACgyver

2026 crypto Disobey!
100

Points

10 solvers

Other Challenges

02

xor rox

crypto
150

Points

11 solvers
03

Flags-as-a-Service

crypto
200

Points

7 solvers
04

Forward

crypto web
200

Points

6 solvers
05

Pad Practice

web crypto
200

Points

4 solvers
06

nixucoin: W E B S C A L E

crypto code review
300

Points

6 solvers