Find the Solidity Bug in 30 LOC
blockchain · easy · +30 XP
Target
GET /api/lab/solidity-101/contract (30-LOC ERC20-ish contract)
POST /api/lab/solidity-101/submit body {bug_class, line}
Goal: the contract has an integer-overflow-style bug (balance -= amount without checking). Bug class: integer_overflow (or underflow). Submit the line number where the bug lives.
// AI hint · first is free · then 1 credit or 5 XP
// attack console
/api/lab/solidity-101/
// reuse on the cli
// submit flag
// no solves yet
// start of blockchain
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