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Wtf Ctf

Wtf Ctf is a public, MIT-licensed Solidity repository that collects Ethereum Virtual Machine capture-the-flag challenges, solutions and Foundry tests. Its listed material includes exercises from Capture the Ether and Ethernaut, with challenge code and write-ups for individual puzzles.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Wtf Ctf — 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 locally worked Solidity and EVM security puzzles with Foundry tests, rather than a hosted challenge interface.

Who it is for

  • Solidity developers seeking hands-on EVM security exercises
  • Learners who want to study challenge code alongside solutions and write-ups
  • Educators or exercise authors looking for examples of EVM CTF material

Documented uses

  • Work through individual smart-contract security puzzles using Foundry tests.
  • Read challenge solutions and linked write-ups to study puzzle approaches.
  • Use a collection of EVM challenges as source material for training exercises.
Before you choose

Requirements & limits

The repository is public and lists an MIT license. The documented workflow uses a local Foundry environment.

  • The documented workflow requires Rust, svm-rs, a selected Solidity compiler and Foundry.
  • The README demonstrates solc 0.4.26 and includes compiler-version badges, making compiler version management relevant.
  • Challenge examples and write-ups are organized in the repository by challenge collection and topic.

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

Run a test for one challenge with Foundry

Run the documented Foundry test command for a single example challenge.

Before you start

  • Rust and svm-rs installed
  • A Solidity compiler version selected with svm
  • Foundry configured
  • The WTF-CTF repository cloned locally

Steps

  1. Change into the WTF-CTF repository directory.

  2. Run forge test -C ./src/Capture_the_Ether/Warmup/Deploy_a_contract -vvv.

Expected outcome

Foundry runs the tests in the specified Deploy a contract challenge directory with verbose output.

Guide limitations

  • The README shows this command as an example for one challenge; it does not establish that the command has been independently run.
  • Compiler requirements may vary across repository challenges.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
WTFAcademy/WTF-CTF · Official homepage title · retained in its source language
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