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Damn Vulnerable DeFi – Foundry Version

Damn Vulnerable DeFi - Foundry Version is a command-line smart-contract security wargame. It provides DeFi challenge levels where learners write Solidity exploit solutions in test files and run them with Foundry.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Damn Vulnerable DeFi - Foundry Version — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when you want command-line, test-driven practice with DeFi exploit challenges and already work in a Foundry-oriented development environment.

Who it is for

  • Developers learning offensive security for DeFi smart contracts.
  • Aspiring bug hunters and security auditors seeking hands-on Solidity challenge practice.

Documented uses

  • Write an exploit solution for a DeFi challenge in a Solidity test file.
  • Run a selected challenge and use successful execution as the stated pass condition.
  • Practice Foundry cheatcodes such as prank or startPrank when using the attacker account.
Before you choose

Requirements & limits

The repository is public and lists an MIT license.

  • The workflow requires the Foundry toolchain and command-line use.
  • Solutions are written in supplied Solidity test files rather than through a hosted course interface.
  • The README lists ds-test, forge-std and OpenZeppelin contracts as preinstalled dependencies.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up and run a Foundry challenge

Prepare the repository, write a Solidity challenge solution and run the selected level.

Before you start

  • A terminal environment for Foundry and the repository.
  • Foundry, including forge and cast.

Steps

  1. Install Foundry with foundryup, then open a new terminal session or reload PATH and run foundryup.

  2. Clone the repository, change into its directory and install dependencies with forge install.

  3. Write the solution in the matching [NAME_OF_THE_LEVEL].t.sol file in the test folder.

  4. Run the level with make [CONTRACT_LEVEL_NAME] or use ./run.sh with a level folder name, challenge number or four-letter name prefix.

Expected outcome

The selected challenge runs; the README says a successful execution means the challenge is passed.

Guide limitations

  • Challenges require use of the attacker account; the README points to Foundry prank or startPrank cheatcodes.
  • Some solutions may require coding and deploying custom smart contracts.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
15 October 2026
Original website title
nicolasgarcia214/damn-vulnerable-defi-foundry · Official homepage title · retained in its source language
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