yuyasugano

function pancakeCall(address sender, uint amount0, uint amount1, bytes calldata data) {
  address token0 = IUniswapV2Pair(msg.sender).token0(); // fetch the address of token0
  address token1 = IUniswapV2Pair(msg.sender).token1(); // fetch the address of token1
  assert(msg.sender == IUniswapV2Factory(factoryV2).getPair(token0, token1)); // ensure that msg.sender is a V2 pair
  // rest of the function goes here!
  ...
  
  // transfer tokens to reimburse the required amount for swap
  IERC20(token1).transfer(msg.sender, amountRequired);
  // transfer tokens to an address who receives an arbitrage profit

yuyasugano

function startArbitrage(
    address token0,
    address token1,
    uint amount0,
    uint amount1
) external {
    address pairAddress = IUniswapV2Factory(pancakeFactory).getPair(token0, token1);
    require(pairAddress != address(0), 'This pool does not exist');

    IUniswapV2Pair(pairAddress).swap(

yuyasugano

pragma solidity ^0.5.0;

import "./base/FlashLoanReceiverBase.sol";
import "./interfaces/ILendingPoolAddressesProvider.sol";
import "./interfaces/ILendingPool.sol";

contract Flashloan is FlashLoanReceiverBase {

    address public receiver = address(this);
    address public constant BNB_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

yuyasugano

// See https://multiplierfinance.medium.com/multi-chain-lend-protocol-is-live-on-bsc-5003735e3c18
// The official address should not change once deployed
ILendingPoolAddressesProvider public addressesProvider =
    ILendingPoolAddressesProvider(address(0xcc0479a98cc66e85806d0cd7970d6e07f77fd633));

yuyasugano

>> JPYC.deploy({'from': accounts[0]})
Transaction sent: 0xcb24ddc2d7e7387549ddd1706c86bf0ec7de7cc627976dd5e0c1b17a8ed2eb3d
  Gas price: 1.0 gwei   Gas limit: 1428853   Nonce: 52
  JPYC.constructor confirmed - Block: 8152507   Gas used: 1298958 (90.91%)
  JPYC deployed at: 0xbD9c419003A36F187DAf1273FCe184e1341362C0

yuyasugano

$ export WEB3_INFURA_PROJECT_ID=<Rinkeby INFURA PROJECT ID>
$ brownie console --network rinkeby
Brownie v1.12.4 - Python development framework for Ethereum

JpycRinkebyProject is the active project.
Brownie environment is ready.
>>> accounts.add('<your private key>')
>>> con = PriceConsumerV3.deploy({'from': accounts[-1]})
Transaction sent: 0x46b76bd13ceeb137066c01709a9e60201b4d4c0e49bbbd942b5bdb4953e54277
  Gas price: 1.0 gwei   Gas limit: 244127   Nonce: 51

yuyasugano

import pytest
import click

configurations = {
    'dai': {'token': '0x6b175474e89094c44da98b954eedeac495271d0f', 'whale': '0x70178102AA04C5f0E54315aA958601eC9B7a4E08'},
    'usdt': {'token': '0xdac17f958d2ee523a2206206994597c13d831ec7', 'whale': '0x1062a747393198f70f71ec65a582423dba7e5ab3'},
    'usdc': {'token': '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', 'whale': '0xa191e578a6736167326d05c119ce0c90849e84b7'},
}

# isolation fixture for each function, takes a snapshot of the chain

yuyasugano

import pytest
import click

# isolation fixture for each function, takes a snapshot of the chain
@pytest.fixture(scope='function', autouse=True)
def isolation(fn_isolation):
    pass

def test_flashloan_aave1(accounts, interface, chain, Flashloan):
    # prepare accounts

yuyasugano

// This is the function that will be called postLoan
// i.e. Encode the logic to handle your flashloaned funds here
function callFunction(
    address sender,
    Account.Info memory account,
    bytes memory data
) public {
    DexArbitrage memory dex = abi.decode(data, (DexArbitrage));
    address[] memory path1 = new address[](2);
    address[] memory path2 = new address[](3);

yuyasugano

// 1. Sell A for B at Uniswap
const uAtoB = await uFetcher.fetchPairData(
    tokenFetchers[i][1],
    tokenFetchers[i][0]
);
const route1 = await new uRoute([uAtoB], tokenFetchers[i][0]);
const trade1 = await new uTrade(
    route1,
    new uTokenAmount(tokenFetchers[i][0], amount0),
    uTradeType.EXACT_INPUT