First Flight #29: TwentyOne

I’m proud to share that I secured 2nd place with a total of 293 XP!

This milestone is especially meaningful because it’s my second competitive audit, and I can already see the growth and learning from the experience. Diving deep into contract security and uncovering vulnerabilities is both challenging and rewarding.

A huge thank you to the organizers and participants for making this such an exciting and collaborative event.

Onward and upward as I continue honing my skills and contributing to the security of blockchain ecosystems!

• Starts: November 21, 2024 Noon UTC

• Ends: November 28, 2024 Noon UTC

• nSLOC: 147

About the Project

The "TwentyOne" protocol is a smart contract implementation of the classic blackjack card game, where users can wager 1 ETH to participate with a chance to double their money!

Actors

• Player: The user who interacts with the contract to start and play a game. A player must deposit 1 ETH to play, with a maximum payout of 2 ETH upon winning.
• Dealer: The virtual counterpart managed by the smart contract. The dealer draws cards based on game logic.

Scope (contracts)

All Contracts in `src` are in scope.

src/
└── TwentyOne.sol

@audit

All Findings in @audit and full report.

├── @audit
│   ├── audit-report
│       ├── auditreportforpdf.md
│       └── auditreportforpdf.pdf

Compatibilities

Compatibilities: Blockchains: - Ethereum/Any EVM Tokens: - ETH

Setup

Build:

git clone https://github.com/Cyfrin/2024-11-twentyone.git

cd 2024-11-twentyone
 
forge build

Tests:

Forge test

Known Issues

No known issues