Ethernaut is a Web3/Solidity based wargame inspired in overthewire.org, to be played in the Ethereum Virtual Machine. Each level is a smart contract that needs to be 'hacked'.
The game acts both as a tool for those interested in learning ethereum, and as a way to catalogue historical hacks in levels. Levels can be infinite and the game does not require to be played in any particular order.
Level PR's are welcome!
Deployed Versions You can find the current, official version at: ethernaut.openzeppelin.com
How we built it
Challenges we ran into
Deployment To deploy the contracts on ropsten, first set the ACTIVE_NETWORK variable in constants.js and then edit gamedata.json. This file keeps a history of all level instances in each level data's deployed_ropsten array. To deploy a new instance, add an "x" entry to the array, like so:
"deployed_ropsten": [ "x", "0x4b1d5eb6cd2849c7890bcacd63a6855d1c0e79d5", "0xdf51a9e8ce57e7787e4a27dd19880fd7106b9a5c" ], Then run yarn deploy:contracts. This action will effectively deploy a new version of the level data item whose deployed_ropsten array was updated, and will point the ethernaut dapp to use this new deployed contract instance for the level.
What we learned
A level factory contract that needs to extend Level.sol. This factory contract will be deployed only once and registered on Ethernaut.sol by Ethernaut's owner. Players never interact with the factory directly. The factory is in charge of creating level instances for players to use (1 instance per player) and to check these instances to verify if the player has beat the level. Factories should not have state that can be changed by the player.
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