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Blockchain Security Challenges

Game of Ethereum Smart Contract Security

Blockchain Security CTF Competitions

Blockchain Security Challenges in CTF

Note

Note: Blockchain challenges in CTF competitions are not very common, so we have collected the majority of available challenges, including smart contract and public blockchain related challenges. They are listed by year with links to the challenges and their writeups. The challenge list is incomplete and will be updated regularly. Competition names within the same year are not listed in any particular order, and if there are multiple writeups, they are also not in any particular order. Related challenges can be found in the ctf-challenges/blockchain repository or practiced online at the ChainFlag platform.

Ethereum Smart Contract

  • RealWorld - 2021

    • Challenge Name: Re: Montagy
    • Challenge Name: EasyDefi

  • *ctf - 2021

    • Challenge Name: StArNDBOX

  • University Anti-epidemic Cybersecurity Sharing Competition - 2020

    • Challenge Name: OwnerMoney

  • RCTF - 2020

    • Challenge Name: roiscoin

  • 5th Space - 2020

    • Challenge Name: CreativityPlus
    • Challenge Name: SafeDelegatecall

  • 1st Diaoyucheng Cup - 2020

    • Challenge Name: StrictMathematician

  • QWB - 2020

    • Challenge Name: IPFS
    • Challenge Name: EasyAssembly
    • Challenge Name: EasyFake
    • Challenge Name: EasySandbox
    • Challenge Name: EthGaMe (EGM)
    • Challenge Name: EBK

  • Balsn - 2020

    • Challenge Name: Election
    • Challenge Name: IdleGame

  • Huawei Cloud Security - 2020

    • Challenge Name: ethenc

  • Huawei Kunpeng Computing - 2020

    • Challenge Name: boxgame

  • Huawei HarmonyOS - 2020

    • Challenge Name: ContractGame

  • RealWorld - 2019

    • Challenge Name: Montagy

  • Balsn - 2019

    • Challenge Name: Bank
    • Challenge Name: Creativity

  • CISCN - 2019

    • Challenge Name: Daysbank

  • QWB - 2019

    • Challenge Name: babybank
    • Challenge Name: babybet

  • ByteCTF - 2019

    • Challenge Name: bet
    • Challenge Name: hf

  • N1CTF - 2019

    • Challenge Name: h4ck

  • Digital Economy - 2019

    • Challenge Name: cow
    • Challenge Name: rise
    • Challenge Name: jojo

  • RoarCTF - 2019

    • Challenge Name: CoinFlip

  • Hackergame - 2019

    • Challenge Name: JCBank

  • XCTF_final - 2019

    • Challenge Name: Happy_DOuble_Eleven

  • D^3CTF - 2019

    • Challenge Name: bet2loss_v2

  • De1CTF - 2019

    • Challenge Name: Easy EOS

  • RealWorld - 2018

    • Challenge Name: Acoraida Monica

  • HCTF - 2018

    • Challenge Name: ethre
    • Challenge Name: bet2loss
    • Challenge Name: ez2win

  • BCTF - 2018

    • Challenge Name: Fake3d
    • Challenge Name: EOSGAME

  • WCTF - 2018

    • Challenge Name: BelluminarBank

  • LCTF - 2018

    • Challenge Name: easy little trick
    • Challenge Name: ggbank

  • *ctf - 2018

    • Challenge Name: web-smart_contract

  • dctf - 2017

    • Challenge Name: spock-lizard-alpha
    • Challenge Name: spock-lizard-beta
    • Challenge Name: spock-lizard-omega

Public Blockchain