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https://github.com/refcell/subway-rs

An extensible and practical demonstration of constructing evm-based sandwich attacks built with ethers-rs and Huff language.
https://github.com/refcell/subway-rs

evm huff mev rust sandwich

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An extensible and practical demonstration of constructing evm-based sandwich attacks built with ethers-rs and Huff language.

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# subway-rs • [![ci](https://github.com/refcell/subway-rs/actions/workflows/ci.yaml/badge.svg?label=ci)](https://github.com/refcell/subway-rs/actions/workflows/ci.yaml) ![license](https://img.shields.io/badge/License-MIT-green.svg?label=license) ![twitter](https://img.shields.io/twitter/follow/asnared?style=social)



Construct evm-based sandwich attacks using Rust and Huff.



#### Getting Started



[subway-rs](https://github.com/refcell/subway-rs) is a port of [libevm](https://twitter.com/libevm)'s original [subway](https://github.com/libevm/subway), implemented with [ethers-rs](https://github.com/gakonst/ethers-rs) and [huff](https://github.com/huff-language).



> 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.

> _Source: [libevm/subway](https://github.com/libevm/subway#subway)_



To improve upon the original tech stack, we use [rust](https://www.rust-lang.org/): the best language available for speed, dependability, and scalability (not biased).



This is [subway-rs](https://github.com/refcell/subway-rs): A pure-rust bot and Huff smart contracts used to execute sandwich attacks on UniswapV2.



The goal is to act as a low barrier of entry for huff and rust-based MEV development; a sort-of reference code for aspiring new searchers.



We're building it to be **fast**. But don't take our word for it, just check out the [benchmarks](./bot/benches).



Current capabilities:



- Watch pending transactions in the mempool.

- Decode Transaction data for Uniswap V2 Calls. (and more soon!)

- Search for profitable strategies efficiently using a variety of algorithms.

- Calculate gas bribes.

- Simulate and Execute Flashbot Bundles.

- Verbose telemetry reporting using [tracing](https://crates.io/crates/tracing).



#### Future Improvements



> **Note**

>

> Be aware, this bot is intended to be educational content and not for production use.



Although the bot functions, it is simplistic and _certainly_ not competitive. Accept that advanced searchers to already be executing far beyond the current capabilities.



That being said, a list of future improvements are tagged with the `feat:` prefix in the [issues section](https://github.com/refcell/subway-rs/issues) of this repository.



#### Contributing



All contributions are welcome!



Please reach out to [asnared](https://twitter.com/asnared) on twitter or [open an issue](https://github.com/refcell/subway-rs/issues/new) for any questions, improvements, or bugs.



#### Attributions



- [subway](https://github.com/libevm/subway)

- [mev-template-rs](https://github.com/DeGatchi/mev-template-rs)

- [foundry](https://github.com/foundry-rs/foundry)

- [forge-std](https://github.com/brockelmore/forge-std)

- [foundry-huff](https://github.com/foundry-rs/foundry-huff)



#### Noteworthy Mentions



- [quay](https://github.com/Alcibiades-Capital/quay)

- [merkle-generator](https://github.com/DeGatchi/merkle-generator)

- [flashloans-toolbox](https://github.com/Supercycled/flashloans-toolbox)

- [Cake Sniper](https://github.com/Supercycled/cake_sniper)

- [searcher-examples](https://github.com/jito-labs/searcher-examples)

- [simple-arbitrage-rs](https://github.com/thasarito/simple-arbitrage-rs)

- [mev-bundle-generator](https://github.com/Alcibiades-Capital/mev_bundle_generator)