# Wenwin audit contest Code4rena · On-chain lottery · 6th March 2023 · #13 A public audit contest on Code4rena (on-chain lottery), completed on 6th March 2023. 0xSimao placed #13. 1 of his findings is published: 1 medium. ## What Wenwin is Wenwin is a decentralised gaming protocol for chance-based games on-chain. Its Lottery implements ticket sales, prize pools and randomness-driven draws entirely in smart contracts. ## Scope The Lottery contracts: ticket minting, draws and randomness, prize claims and the staking of protocol fees. ## Medium severity findings - [Possibility to steal jackpot bypassing restrictions in the `executeDraw()`](https://0xsimao.com/findings/wenwin-possibility-steal-jackpot-bypassing) ## The contest [View the contest page](https://code4rena.com/audits/2023-03-wenwin-contest)