Address Contract Verified

Address 0xB9CA88c45172111ed8a96000fc310B4156de48Bf

Balance 0 ETH

Nonce 1

Code Size 4568 bytes

Creator 0xdc26763F...3C96 at tx 0x85dc01bc...3a13dc

Indexed Transactions 0

External Etherscan · Sourcify

Contract Bytecode

4568 bytes

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Verified Source Code Full Match

Compiler: v0.8.31+commit.fd3a2265 EVM: osaka Optimization: No

ArbitrageNoFlashExecutor.sol 121 lines

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IERC20 {
    function transfer(address to, uint256 value) external returns (bool);
    function balanceOf(address owner) external view returns (uint256);
}

interface IUniswapV2Pair {
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
}

contract ArbitrageExecutorNoFlash {
    address public immutable owner;

    constructor() {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Not owner");
        _;
    }

    // 允许合约接收 ETH 并自动换成 WETH 的话需要额外逻辑，这里假设你直接转入 WETH
    receive() external payable {}

    /**
     * @dev 直接使用合约自有 WETH 执行套利
     * @param _pairs 交易对地址数组
     * @param _tokens 代币路径数组 (tokens[i] 是 pairs[i] 的输入代币)
     * @param _amountIn 起始投入的 WETH 数量
     */
    function execute(
        address[] calldata _pairs,
        address[] calldata _tokens,
        uint256 _amountIn
    ) external onlyOwner {
        require(_pairs.length > 0, "No pairs");
        
        // 1. 检查合约 WETH 余额是否足够
        uint256 balanceBefore = IERC20(_tokens[0]).balanceOf(address(this));
        require(balanceBefore >= _amountIn, "Insufficient WETH balance");

        uint256 currentAmount = _amountIn;

        // 2. 循环执行每一跳
        for (uint256 i = 0; i < _pairs.length; i++) {
            // 将当前代币转入对应的池子 (Interaction)
            IERC20(_tokens[i]).transfer(_pairs[i], currentAmount);

            // 计算下一跳应得的金额 (Calculation)
            // 这里复用之前的计算逻辑，确保不会 Stack too deep
            (uint256 amount0Out, uint256 amount1Out, uint256 amountOutput) = _calculateSwapAmounts(_pairs[i], _tokens[i]);

            // 执行交换 (Interaction)
            // 注意：data 传空 bytes(0)，这样就不会触发回调，直接完成转账
            IUniswapV2Pair(_pairs[i]).swap(
                amount0Out, 
                amount1Out, 
                address(this), 
                new bytes(0) 
            );

            currentAmount = amountOutput;
        }

        // 3. 最终检查：确保最后换回来的 WETH 比投入的多
        uint256 balanceAfter = IERC20(_tokens[0]).balanceOf(address(this));
        require(balanceAfter > balanceBefore, "No profit made from own funds");
    }

    /**
     * @dev 纯计算函数，防止堆栈过深
     */
    function _calculateSwapAmounts(address _pair, address _inputToken) 
        internal 
        view 
        returns (uint256 amount0Out, uint256 amount1Out, uint256 amountOutput) 
    {
        address token0 = IUniswapV2Pair(_pair).token0();
        (uint112 r0, uint112 r1, ) = IUniswapV2Pair(_pair).getReserves();
        
        uint256 reserveIn;
        uint256 reserveOut;

        if (_inputToken == token0) {
            reserveIn = uint256(r0);
            reserveOut = uint256(r1);
        } else {
            reserveIn = uint256(r1);
            reserveOut = uint256(r0);
        }

        // 获取池子中实际收到的金额
        uint256 amountInput = IERC20(_inputToken).balanceOf(_pair) - reserveIn;

        // Uniswap V2 恒定乘积公式
        uint256 amountInWithFee = amountInput * 997;
        amountOutput = (amountInWithFee * reserveOut) / ((reserveIn * 1000) + amountInWithFee);

        if (_inputToken == token0) {
            amount0Out = 0;
            amount1Out = amountOutput;
        } else {
            amount0Out = amountOutput;
            amount1Out = 0;
        }
    }

    // 提现函数，用于提取套利利润
    function withdraw(address _token) external onlyOwner {
        uint256 balance = IERC20(_token).balanceOf(address(this));
        if (balance > 0) {
            IERC20(_token).transfer(owner, balance);
        }
    }
}

Read Contract

owner 0x8da5cb5b → address

Write Contract 2 functions

These functions modify contract state and require a wallet transaction to execute.

execute 0x418e6ecc

address[] _pairs
address[] _tokens
uint256 _amountIn

withdraw 0x51cff8d9

address _token

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View Transfers →

WETH 0.012

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