The Ethernaut - 15. Naught Coin

NaughtCoin 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 help

The ERC20 Spec
The OpenZeppelin codebase

 

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토큰을 0으로 만들어야 한다
https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
ERC20에 대해 알아야 하는 문제인데 공식에서 떠먹여준 영어 사이트 말고

https://rhenus9911.tistory.com/entry/BlockChain-ERC20
정말 설명 잘해주신 한글 블로그에서 공부했다 ㅎㅎ.... ㅎㅎ....
ㅎㅎ........ 영어 열심히 할게요

 

transferForm 사용하기

cast send 0x0e762121B2C1CAeF0382616e7a6f7cCFA4b76d17 --rpc-url https://sepolia.infura.io/v3/RPC_URL --private-key 개인키 "transferFrom(address,address,uint256)" "내주소" "0x0e762121B2C1CAeF0382616e7a6f7cCFA4b76d17" 1000000000000000000000000

approve !!

cast send 0x0e762121B2C1CAeF0382616e7a6f7cCFA4b76d17 --rpc-url https://sepolia.infura.io/v3/RPC_URL --private-key 개인키 "approve(address,uint256)" "내주소" 1000000000000000000000000

쉽지만은 않다