DescriptionThis gatekeeper introduces a few new challenges. Register as an entrant to pass this level.Things that might help:Remember what you've learned from getting past the first gatekeeper - the first gate is the same.The assembly keyword in the second gate allows a contract to access functionality that is not native to vanilla Solidity. See Solidity Assembly for more information. The extcod..
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DescriptionMake it past the gatekeeper and register as an entrant to pass this level.Things that might help:Remember what you've learned from the Telephone and Token levels.You can learn more about the special function gasleft(), in Solidity's documentation (see Units and Global Variables and External Function Calls).Code// SPDX-License-Identifier: MITpragma solidity ^0.8.0;contract GatekeeperOn..
DescriptionNaughtCoin is an ERC20 token and you're already holding all of them. The catch is that you'll only be able to transfer them after a 10 year lockout period. Can you figure out how to get them out to another address so that you can transfer them freely? Complete this level by getting your token balance to 0.Things that might helpThe ERC20 SpecThe OpenZeppelin codebaseCode// SPDX-License..
DescriptionThe creator of this contract was careful enough to protect the sensitive areas of its storage.Unlock this contract to beat the level.Things that might help:Understanding how storage worksUnderstanding how parameter parsing worksUnderstanding how casting worksTips:Remember that metamask is just a commodity. Use another tool if it is presenting problems. Advanced gameplay could involve ..
