HTB - Blockchain: Token to Wonderland

Challenge Summary

  • Name: Token to Wonderland
  • Category: Blockchain
  • Difficulty: Easy
  • Goal condition: become owner of item index 2 (Golden Key)
 

Zero

CTF notes by Zero

Exploiting unchecked arithmetic underflow in a Solidity 0.7 token implementation.

2026-02-25

Tags

#ctf #htb #blockchain