https://github.com/libevm/subway

A practical example on how to perform sandwich attacks on Ethereum
https://github.com/libevm/subway

Last synced: 24 days ago
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A practical example on how to perform sandwich attacks on Ethereum

• Host: GitHub
• URL: https://github.com/libevm/subway
• Owner: libevm
• License: mit
• Created: 2021-12-10T21:01:34.000Z (almost 3 years ago)
• Default Branch: master
• Last Pushed: 2023-08-02T11:30:53.000Z (over 1 year ago)
• Last Synced: 2024-10-01T21:05:38.299Z (about 1 month ago)
• Language: Solidity
• Size: 85 KB
• Stars: 2,115
• Watchers: 41
• Forks: 532
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-solidity - libevm/subway - A practical example on how to perform sandwich attacks on Ethereum. (Resources)
• awesome-solidity - libevm/subway - A practical example on how to perform sandwich attacks on Ethereum. (Resources)
• awesome-solidity - libevm/subway - A practical example on how to perform sandwich attacks on Ethereum. (Resources)

README

        
# Subway

A practical example on how to perform sandwich attacks on UniswapV2 pairs.

Having highly optimized contracts is just one part of the equation, a tech stack is just as important as the contracts to execute on the opportunities.

https://user-images.githubusercontent.com/95674753/145967796-6c2c8925-fb5c-41d4-a64f-a22ce8701ce6.mp4

## Overview

The contracts are written in Yul+ and Solidity, and contains the **bare minimum** needed to perform a sandwich attack (i.e. `swap` and `transfer`). **They do NOT protect against [uncle bandit attacks](https://twitter.com/bertcmiller/status/1385294417091760134) so use at your own risk.**

The goal of this bot is to act as a low barrier of entry, reference source code for aspiring new searchers (hence, JavaScript). This bot contains:

- read from the mempool

- decode transaction data

- simple logging system

- profit calculation algos

- gas bribe calculation

- bundle firing

- misc

  - doing math in JS

  - calculating next base fee

While the bot is functional, the bot logic is a very simplistic one and does not contain a lot of the features that many advance searchers have (but not including), such as:

- circuit breakers

- poison token checker

- caching system

- robust logging system (e.g. graphana)

- various gas saving ALPHAs

As such, this bot is intended as a piece of educational content, and not for production use.