Binance 14 delegated sweeper — bytecode-matching Solidity reconstruction
edited:
by // SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.28;
/* Reconstructed source, not recovered original source.
* Compiles byte-for-byte to the observed executable runtime of
* 0x63e842B054Bd624a465454D533C33F573e9c6fAe at Ethereum block 26300770.
* Build: solc 0.8.28, viaIR=true, optimizer enabled/runs=200, evmVersion=cancun.
* Strip CBOR metadata using the final two-byte big-endian length, plus those
* two bytes: executable runtime = 1621 bytes; original metadata trailer = 53.
* All function, error, and event selector preimages have been identified.
* Function names confirmed by selector hashing; database matches alone do not
* prove original source spelling. Internal names and contract name are inferred.
*/
contract DelegatedSweeper {
address public constant authorizedCaller = 0x7C8601d4645b93cea45F71e118A729332e6B5CA0;
error NotAuthorized();
error TokenTransferFailed();
error ETHTransferFailed();
error ExecuteCallFailed(address account, bytes reason);
error NoCodeAtExecutor(address executor);
event SweepItemFailed(address indexed token, uint8 reason);
modifier onlyAuthorized() {
if (msg.sender != authorizedCaller) revert NotAuthorized();
_;
}
receive() external payable {}
function withdrawToken(address token, address payable to, uint256 amount) external onlyAuthorized {
_withdrawToken(token, to, amount);
}
function withdrawETH(address to, uint256 amount) external onlyAuthorized {
_withdrawETH(to, amount);
}
function _withdrawToken(address token, address payable to, uint256 amount) internal {
if (amount == 0) return;
(bool ok,) = token.call(abi.encodeWithSignature("transfer(address,uint256)", to, amount));
if (!ok) revert TokenTransferFailed();
}
function _withdrawETH(address to, uint256 amount) internal {
if (amount == 0) return;
(bool ok,) = payable(to).call{value: amount}("");
if (!ok) revert ETHTransferFailed();
}
function sweep(address payable to, address[] calldata tokens) external onlyAuthorized {
for (uint256 i = 0; i < tokens.length; i++) {
address token = tokens[i];
if (token == address(0)) {
uint256 balance = address(this).balance;
if (balance > 1 ether) {
(bool ok,) = payable(to).call{value: balance - 1 ether}("");
if (!ok) emit SweepItemFailed(token, 3);
}
} else {
(bool ok, bytes memory ret) =
token.staticcall(abi.encodeWithSignature("balanceOf(address)", address(this)));
if (!ok || ret.length < 32) {
emit SweepItemFailed(token, 1);
continue;
}
uint256 balance = abi.decode(ret, (uint256));
if (balance > 0) {
(bool success,) =
token.call(abi.encodeWithSignature("transfer(address,uint256)", address(to), balance));
if (!success) emit SweepItemFailed(token, 2);
}
}
}
}
function callExecute(address account, address to, uint256 value, bytes calldata data)
external
payable
onlyAuthorized
returns (bytes memory)
{
if (account.code.length == 0) {
revert NoCodeAtExecutor(account);
}
(bool ok, bytes memory result) =
account.call{value: msg.value}(abi.encodeWithSelector(bytes4(0xb61d27f6), to, value, data));
if (!ok) revert ExecuteCallFailed(account, result);
return result;
}
}
{
"language": "Solidity",
"sources": {
"Sweeper.sol": {
"content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.28;\n/* Reconstructed source, not recovered original source.\n * Compiles byte-for-byte to the observed executable runtime of\n * 0x63e842B054Bd624a465454D533C33F573e9c6fAe at Ethereum block 26300770.\n * Build: solc 0.8.28, viaIR=true, optimizer enabled/runs=200, evmVersion=cancun.\n * Strip CBOR metadata using the final two-byte big-endian length, plus those\n * two bytes: executable runtime = 1621 bytes; original metadata trailer = 53.\n * All function, error, and event selector preimages have been identified.\n * Function names confirmed by selector hashing; database matches alone do not\n * prove original source spelling. Internal names and contract name are inferred.\n */\n\ncontract DelegatedSweeper {\n address public constant authorizedCaller = 0x7C8601d4645b93cea45F71e118A729332e6B5CA0;\n error NotAuthorized();\n error TokenTransferFailed();\n error ETHTransferFailed();\n error ExecuteCallFailed(address account, bytes reason);\n error NoCodeAtExecutor(address executor);\n event SweepItemFailed(address indexed token, uint8 reason);\n modifier onlyAuthorized() {\n if (msg.sender != authorizedCaller) revert NotAuthorized();\n _;\n }\n receive() external payable {}\n\n function withdrawToken(address token, address payable to, uint256 amount) external onlyAuthorized {\n _withdrawToken(token, to, amount);\n }\n\n function withdrawETH(address to, uint256 amount) external onlyAuthorized {\n _withdrawETH(to, amount);\n }\n\n function _withdrawToken(address token, address payable to, uint256 amount) internal {\n if (amount == 0) return;\n (bool ok,) = token.call(abi.encodeWithSignature(\"transfer(address,uint256)\", to, amount));\n if (!ok) revert TokenTransferFailed();\n }\n\n function _withdrawETH(address to, uint256 amount) internal {\n if (amount == 0) return;\n (bool ok,) = payable(to).call{value: amount}(\"\");\n if (!ok) revert ETHTransferFailed();\n }\n\n function sweep(address payable to, address[] calldata tokens) external onlyAuthorized {\n for (uint256 i = 0; i < tokens.length; i++) {\n address token = tokens[i];\n if (token == address(0)) {\n uint256 balance = address(this).balance;\n if (balance > 1 ether) {\n (bool ok,) = payable(to).call{value: balance - 1 ether}(\"\");\n if (!ok) emit SweepItemFailed(token, 3);\n }\n } else {\n (bool ok, bytes memory ret) =\n token.staticcall(abi.encodeWithSignature(\"balanceOf(address)\", address(this)));\n if (!ok || ret.length < 32) {\n emit SweepItemFailed(token, 1);\n continue;\n }\n uint256 balance = abi.decode(ret, (uint256));\n if (balance > 0) {\n (bool success,) =\n token.call(abi.encodeWithSignature(\"transfer(address,uint256)\", address(to), balance));\n if (!success) emit SweepItemFailed(token, 2);\n }\n }\n }\n }\n\n function callExecute(address account, address to, uint256 value, bytes calldata data)\n external\n payable\n onlyAuthorized\n returns (bytes memory)\n {\n if (account.code.length == 0) {\n revert NoCodeAtExecutor(account);\n }\n (bool ok, bytes memory result) =\n account.call{value: msg.value}(abi.encodeWithSelector(bytes4(0xb61d27f6), to, value, data));\n if (!ok) revert ExecuteCallFailed(account, result);\n return result;\n }\n}\n"
}
},
"settings": {
"viaIR": true,
"optimizer": {
"enabled": true,
"runs": 200
},
"evmVersion": "cancun",
"outputSelection": {
"*": {
"*": [
"evm.deployedBytecode.object",
"abi",
"irOptimized"
]
}
}
}
}{
"compiler": "0.8.28+commit.7893614a",
"viaIR": true,
"optimizer": {
"enabled": true,
"runs": 200
},
"evmVersion": "cancun",
"onchainRuntimeBytes": 1674,
"rebuiltRuntimeBytes": 1674,
"executableBytes": 1621,
"metadataTrailerBytes": 53,
"exactExecutableMatch": true,
"onchainExecutableKeccak256": "0x9694e17b9d658f7b85c87335fee4326b80f5223b7754581dcb7a7e6b01ae9416",
"rebuiltExecutableKeccak256": "0x9694e17b9d658f7b85c87335fee4326b80f5223b7754581dcb7a7e6b01ae9416",
"buildCommand": "solc-0.8.28 --standard-json < matched-build-input.json"
}