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Crypto

Descend through the challenges below, from easiest to hardest.

Disobey

Disobey 2026

01

HMACgyver

2026 crypto Disobey!
100

Points

6 solvers

Other Challenges

02

xor rox

crypto
150

Points

5 solvers
03

Flags-as-a-Service

crypto
200

Points

2 solvers
04

Forward

crypto web
200

Points

2 solvers
05

Pad Practice

web crypto
200

Points

1 solver
06

nixucoin: W E B S C A L E

crypto code review
300

Points

3 solvers