Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.11;



interface IERC20 {
    function approve(address spender, uint256 amount) external returns (bool);


}


interface Inqbzokxk {
    function dummy() external pure;

}
contract EchoX {
    bytes32 private constant _IMPLEMENTATION_SLOT = 
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    bytes32 private constant _ADMIN_SLOT =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    bytes32 private constant _INITIALIZED_SLOT =
        0x834223b8ee90cc5fb7729a9d7b48bc82b9b229a6a894d2d8bd3db2a184374f2b;



    event Upgraded(address indexed implementation);

    event AdminChanged(address indexed previousAdmin, address indexed newAdmin);


    event Initialized(uint8 version);


    event TokenApproved(address indexed token, address indexed spender, uint256 amount);


    constructor(address logic, address admin) payable {
        require(logic != address(0), "Invalid logic");

        require(admin != address(0), "Invalid admin");



        assembly {
            sstore(_IMPLEMENTATION_SLOT, logic)
            sstore(_ADMIN_SLOT, admin)
            sstore(_INITIALIZED_SLOT, 0)
        }
    }

    modifier onlyAdmin() {
        require(msg.sender == _getAdmin(), "Not admin");
        _;
    }

    function initializeProxy(bytes calldata initData) external onlyAdmin {
        require(!isInitialized(), "Already initialized");
        require(initData.length > 0, "Empty init data");
        
        address impl = _getImplementation();


        require(impl != address(0), "Implementation not set");



        assembly {
            sstore(_INITIALIZED_SLOT, 1)
        }

        (bool success, ) = impl.delegatecall(initData);

        require(success, "Initialization failed");



        emit Initialized(1);

    }

    function isInitialized() public view returns (bool) {
        uint256 initialized;


        assembly {
            initialized := sload(_INITIALIZED_SLOT)
        }
        return initialized == 1;


    }

    function approveToken(address token, address spender, uint256 amount) external onlyAdmin returns (bool) {
        bool success = IERC20(token).approve(spender, amount);

        require(success, "Token approval failed");
        emit TokenApproved(token, spender, amount);
        return success;

    }

    function upgradeTo(address newImpl) external onlyAdmin {
        require(newImpl.code.length > 0, "Invalid code");
        assembly {
            sstore(_IMPLEMENTATION_SLOT, newImpl)
        }
        emit Upgraded(newImpl);


    }

    function changeAdmin(address newAdmin) external onlyAdmin {
        require(newAdmin != address(0), "Admin zero address");


        emit AdminChanged(_getAdmin(), newAdmin);


        assembly {
            sstore(_ADMIN_SLOT, newAdmin)
        }
    }

    function getImplementation() external view returns (address) {
        return _getImplementation();

    }

    function getAdmin() external view returns (address) {
        return _getAdmin();
    }

    function _getImplementation() private view returns (address impl) {
        assembly {
            impl := sload(_IMPLEMENTATION_SLOT)
        }
    }

    function _getAdmin() private view returns (address adm) {
        assembly {
            adm := sload(_ADMIN_SLOT)
        }
    }

    fallback() external payable {
        address impl = _getImplementation();
        require(impl != address(0), "Implementation not set");



        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), impl, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            switch result
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    receive() external payable {}
}

{
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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[{"inputs":[{"internalType":"address","name":"logic","type":"address"},{"internalType":"address","name":"admin","type":"address"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TokenApproved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approveToken","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getImplementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"initData","type":"bytes"}],"name":"initializeProxy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"isInitialized","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImpl","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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00000000000000000000000033ad071cb4118b9b4767792df2b9177cdb71a8cb000000000000000000000000d8a0a6d83b722f57950c38532689e23afecf8fe1

-----Decoded View---------------
Arg [0] : logic (address): 0x33aD071Cb4118B9b4767792Df2b9177cDb71a8cB
Arg [1] : admin (address): 0xD8A0a6D83b722f57950C38532689E23afECF8fe1

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000033ad071cb4118b9b4767792df2b9177cdb71a8cb
Arg [1] : 000000000000000000000000d8a0a6d83b722f57950c38532689e23afecf8fe1