This is a hardhat project with the contracts and solutions for the Wonderland CTF hosted at ETHLatam @ Buenos Aires 2022.
Each challenge has a corresponding test with the implementation and a description of the solution.
Install dependencies with yarn and execute the tests using npx hardhat test.
Thanks Wonderland and Connext for the amazing experience!
Let the games begin!
First off, a Lottery. Pay to play, get the bounty by buying the winning ticket 🎟
Here is the source code of the contract, this challenge is of MEDIUM difficulty:
Contract: Lottery.sol
Solution: Lottery.js
3... 2... 1...
You can now start with Timelock!
this one should be quite EASY!
Contract: TimeLock.sol
Solution: Timelock.js
OH NO! (Oh YES actually)
It looks like there is a payment system out there that seems to be vulnerable.
Either breaking the contract or stealing the funds would be great, it should be fairly EASY 😄
Contract: DistributePayments.sol
Solution: DistributePayments.js
Hey all! just found out about a potentially vulnerable contract, it's really HARD for me to exploit it, but I'm sure you'll be able to solve it!
There is also another contract, but I cannot find the source now, I'll keep looking and keep you posted.
Best of luck!
YES! Found out the other contract!
This should help you debug what's happening with the answers and questions ! GLHF!
Contract: GuessMyAnswerFromEtherscan.sol
Solution?: GuessMyAnswerFromEtherscan.js
Hey all!
Yes, you guessed correctly, another vulnerable contract just appeared x.x
This one seems to be harder than easy but easier than hard. In case you didn’t get that, it is of MEDIUM difficulty.
Try to get its funds back!
Contract: FundCommiter.sol
Solution: FundCommiter.js
Welp... this one is the last one, and it's preeeeety MEDIUM. (UnverifiedRandomness)
You can find some help here, but there might be more than one way of solving it:
https://github.com/defi-wonderland/ctf-unverified-randomness
God speed, you beautiful hackers
Contract: UnverifiedRandomness.sol
Solution: UnverifiedRandomness.js