andreiashu / DeFiHackLabs

Reproduce DeFi hack incidents using Foundry.

DeFi Hacks Reproduce - Foundry

Reproduce DeFi hack incidents using Foundry.

96 incidents included.

This repo is only for the educational purpose.

Let's make Web3 secure! Join Discord

Getting Started

• Follow the instructions to install Foundry.

• Clone and install dependencies:git submodule update --init --recursive

List of DeFi Hacks & Exploits

20221012 ATK

20221011 Templedao

20221010 Carrot

20221009 Xave Finance

20221006 RES-Token

20221002 Transit Swap

20221001 RL

20221001 Thunder Brawl

20220929 BXH

20220928 MEVBOT Badc0de

20220923 RADT-DAO

20220913 MevBot Private TX

20220910 DPC

20220909 YYDS

20220908 NewFreeDAO

20220908 Ragnarok Online Invasion

20220906 NXUSD

20220905 ZoomproFinance

20220902 ShadowFi

20220902 Bad Guys by RPF

20220824 LuckeyTiger NFT

20220810 XSTABLE Protocol

20220809 ANCH

20220807 EGD Finance

20220802 Nomad Bridge

20220801 Reaper Farm

20220725 LPC

20220713 Audius

20220713 SpaceGodzilla

20220710 Omni NFT

20220706 FlippazOne NFT

20220701 Quixotic - Optimism NFT Marketplace

20220626 XCarnival

20220624 Harmony's Horizon Bridge

20220618 SNOOD

20220616 InverseFinance

20220608 GYMNetwork

20220608 Optimism - Wintermute

20220606 Discover

20220529 NOVO Protocol

20220524 HackDao

20220517 ApeCoin

20220508 Fortress Loans

20220430 Rari Capital/Fei Protocol

20220428 DEUS DAO

20220424 Wiener DOGE

20220423 Akutar NFT

20220421 Zeed Finance

20220416 BeanstalkFarms

20220415 Rikkei Finance

20220412 ElephantMoney

20220409 GYMNetwork

20220329 Ronin Network

20220329 Redacted Cartel

20220327 Revest Finance

20220326 Auctus

20220322 CompoundTUSDSweepTokenBypass

20220321 OneRing Finance

20220320 LI.FI

20220320 Umbrella Network

20220315 Hundred Finance

20220313 Paraluni

20220309 Fantasm Finance

20220305 Bacon Protocol

20220303 TreasureDAO

20220214 BuildFinance - DAO

20220208 Sandbox LAND

20220206 Meter

20220128 Qubit Finance

20220118 Multichain (Anyswap)

20211221 Visor Finance

20211218 Grim Finance

20211130 MonoX Finance

20210916 SushiSwap Miso

20210915 Nimbus Platform

20210915 NowSwap Platform

20210912 ZABU Finance

20210903 DAO Maker

20210830 Cream Finance

20210811 Poly Network

20210817 XSURGE

20210710 Chainswap

20210702 Chainswap

20210628 SafeDollar

20210622 Eleven Finance

20210607 88mph NFT

20210603 PancakeHunny

20210519 PancakeBunny

20210428 Uranium

20210308 DODO

20201229 Cover Protocol

20201121 Pickle Finance

20201026 Harvest Finance

20180422 Beauty Chain

20171106 Parity - 'Accidentally Killed It'

Transaction debugging tools

Phalcon | Tx.viewer | Ethtx | Tenderly

Ethereum Signature Database

4byte | sig.eth | etherface

Useful tools

ABI to interface | Get ABI for unverified contracts | ETH Calldata Decoder

20221012 ATK - FlashLoan manipulate price

Lost: $127 k

Testing

forge test --contracts ./src/test/ATK_exp.sol -vvv

Contract

ATK_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1580095325200474112

20221011 Templedao - Insufficient access control

Lost: $2.3 million

Testing

forge test --contracts src/test/Templedao_exp.sol -vv

Contract

Templedao_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1579843881893769222

https://etherscan.io/tx/0x8c3f442fc6d640a6ff3ea0b12be64f1d4609ea94edd2966f42c01cd9bdcf04b5

20221010 Carrot - Public functionCall

Testing

forge test --contracts src/test/Carrot_exp.sol -vv

Contract

Carrot_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1579908411235237888

https://bscscan.com/tx/0xa624660c29ee97f3f4ebd36232d8199e7c97533c9db711fa4027994aa11e01b9

20221009 Xave Finance - Malicious Proposal Mint & Transfer Ownership

Testing

forge test --contracts src/test/XaveFinance_exp.sol -vv

Contract

XaveFinance_exp.sol

Link reference

https://twitter.com/BeosinAlert/status/1579040051853303808

https://etherscan.io/tx/0xc18ec2eb7d41638d9982281e766945d0428aaeda6211b4ccb6626ea7cff31f4a

20221006 RES-Token - pair manipulate

Testing

forge test --contracts src/test/RES_exp.sol -vv

Contract

RES_exp.sol RES02_exp.sol

Link reference

https://twitter.com/AnciliaInc/status/1578119778446680064

https://bscscan.com/tx/0xe59fa48212c4ee716c03e648e04f0ca390f4a4fc921a890fded0e01afa4ba96d

20221002 Transit Swap - Incorrect owner address validation

Testing

forge test --contracts src/test/TransitSwap_exp.sol -vv

Contract

TransitSwap_exp.sol

Link reference

https://twitter.com/TransitFinance/status/1576463550557483008

https://twitter.com/1nf0s3cpt/status/1576511552592543745

https://bscscan.com/tx/0x181a7882aac0eab1036eedba25bc95a16e10f61b5df2e99d240a16c334b9b189

20221001 RL Token - Incorrect Reward calculation

Testing

forge test --contracts src/test/RL_exp.sol -vv

Contract

RL_exp.sol

Link reference

https://twitter.com/CertiKAlert/status/1576195971003858944

20221001 Thunder Brawl - Reentrancy

Testing

forge test --contracts src/test/THB_exp.sol -vv

Contract

THB_exp.sol

Link reference

https://twitter.com/peckshield/status/1575890733373849601

20220928 BXH - Flashloan & Price Oracle Manipulation

Lost: $40,305

Testing

forge test --contracts src/test/BXH_exp.sol -vv

Contract

BXH_exp.sol

Link reference

https://www.jinse.com/lives/319392.html

https://bscscan.com/tx/0xa13c8c7a0c97093dba3096c88044273c29cebeee109e23622cd412dcca8f50f4

20220910 DPC - Incorrect Reward calculation

Lost: $103,755

Testing

forge test --contracts ./src/test/DPC_exp.sol -vvv 

Contract

DPC_exp.sol

Link reference

https://twitter.com/BeosinAlert/status/1568429355919089664

https://bscscan.com/address/0x2109bbecB0a563e204985524Dd3DB2F6254AB419

https://learnblockchain.cn/article/4733

20220928 MEVBOT - Badc0de

Lost: $1,469,700

An anonymous attacker noticed a flaw in the bots arbitrage contract code, and stole not only the recently acquired 800 ETH, but the entire 1,101 ETH in 0xbad’s wallet.

Testing

forge test --contracts ./src/test/MEVbadc0de_exp.sol -vvv 

Contract

MEVbadc0de_exp.sol

Link reference

https://rekt.news/ripmevbot/

https://etherscan.io/tx/0x59ddcf5ee5c687af2cbf291c3ac63bf28316a8ecbb621d9f62d07fa8a5b8ef4e

20220923 RADT-DAO - pair manipulate

Testing

forge test --contracts ./src/test/RADT_exp.sol -vvv 

Contract

RADT_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1573252869322846209

https://bscscan.com/tx/0xd692f71de2768017390395db815d34033013136c378177c05d0d46ef3b6f0897

20220913 MevBot private tx

Testing

forge test --contracts ./src/test/BNB48MEVBot_exp.sol -vvv 

Contract

BNB48MEVBot_exp.sol

Link reference

https://blocksecteam.medium.com/the-two-sides-of-the-private-tx-service-on-binance-smart-chain-a76917c3ce51

https://twitter.com/1nf0s3cpt/status/1577594615104172033

https://bscscan.com/tx/0xd48758ef48d113b78a09f7b8c7cd663ad79e9965852e872fdfc92234c3e598d2

20220909 YYDS - pair manipulate

Lost: 742,286.27 BUSD

Testing

forge test --contracts ./src/test/Yyds_exp.sol -vvv 

Contract

Yyds_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1567928377432051713

https://bscscan.com/tx/0x04a1f0d1694242515ecb14faa71053901f11a1286cd21c27fe5542f9eeb62356

20220908 Ragnarok Online Invasion - Broken Access Control

Lost: 157.98 BNB (~44,000 US$)

Testing

forge test --contracts ./src/test/ROI_exp.sol -vvv 

Contract

ROI_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1567746825616236544

https://twitter.com/CertiKAlert/status/1567754904663429123

https://www.panewslab.com/zh_hk/articledetails/mbzalpdi.html

https://medium.com/quillhash/decoding-ragnarok-online-invasion-44k-exploit-quillaudits-261b7e23b55

20220908 NewFreeDAO - Flashloans Attack

Lost: 4,481 BNB (~125M US$)

Testing

forge test --contracts ./src/test/NewFreeDAO_exp.sol -vvv 

Contract

NewFreeDAO_exp.sol

Link reference

https://twitter.com/peckshield/status/1567710274244825088

https://twitter.com/BeosinAlert/status/1567757251024396288

https://twitter.com/BlockSecTeam/status/1567706201277988866

https://twitter.com/SlowMist_Team/status/1567854876633309186

20220906 NXUSD - flashloan price oracle manipulation

Lost 50,000 USD

Testing

forge test --contracts ./src/test/NXUSD_exp.sol -vvv 

Contract

NXUSD_exp.sol

Link reference

https://medium.com/nereus-protocol/post-mortem-flash-loan-exploit-in-single-nxusd-market-343fa32f0c6

20220905 ZoomproFinance - Flashloans & Price Manipulation

Lost: 61,160 USDT

Testing

forge test --contracts ./src/test/ZoomproFinance_exp.sol -vvv 

Contract

ZoomproFinance_exp.sol

Link reference

https://twitter.com/blocksecteam/status/1567027459207606273

20220902 ShadowFi - Access Control

Lost: 1,078 BNB

Anyone can burn $SDF

Testing

forge test --contracts ./src/test/Shadowfi_exp.sol -vvv 

Contract

Shadowfi_exp.sol

Link reference

https://twitter.com/PeckShieldAlert/status/1565549688509861888

20220902 Bad Guys by RPF - Business Logic Flaw : Missing Check For Number of NFT to Mint

Lost: Bad Guys by RPF(400 NFTs)

Testing

forge test --contracts ./src/test/BadGuysbyRPF_exp.sol -vvv

Contract

BadGuysbyRPF_exp.sol

Link reference

https://twitter.com/RugDoctorApe/status/1565739119606890498

https://etherscan.io/tx/0x27e64a8215ae1528245c912bcca09883fdd7cce69249bd5d5d1c0eecf5297b96

20220824 LuckeyTiger NFT - Predicting Random Numbers

Testing

forge test --contracts ./src/test/LuckyTiger_exp -vvv 
forge script script/LuckyTiger_s_exp.sol:luckyHack --fork-url http://127.0.0.1:8545 --private-key $PRIVATE_KEY --broadcast

Contract

LuckyTiger_exp.sol | LuckyTiger_s_exp.sol

Link reference

https://twitter.com/1nf0s3cpt/status/1576117129589317633

https://etherscan.io/tx/0x804ff3801542bff435a5d733f4d8a93a535d73d0de0f843fd979756a7eab26af

20220810 XSTABLE Protocol - Incorrect Logic Check

Testing

forge test --contracts ./src/test/XST.exp.sol -vvv 

Contract

XST.exp.sol XST02_exp.sol

Link reference

https://mobile.twitter.com/BlockSecTeam/status/1557195012042936320

20220809 ANCH - Skim token balance

Testing

forge test --contracts ./src/test/ANCH_exp.sol -vvv

Contract

ANCH_exp.sol

Link reference

https://twitter.com/AnciliaInc/status/1557527183966408706

20220807 EGD Finance - Flashloans & Price Manipulation

Lost: 36,044 USDT

Testing

forge test --contracts ./src/test/EGD-Finance.exp.sol -vvv 

Contract

EGD-Finance.exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1556483435388350464

https://twitter.com/PeckShieldAlert/status/1556486817406283776

20220802 Nomad Bridge - Business Logic Flaw : Incorrect acceptable merkle-root checks

Lost: Multiple ERC-20 Tokens (~152M US$)

Testing

forge test --contracts ./src/test/NomadBridge.exp.sol -vvv 

Contract

NomadBridge.exp.sol

Link reference

https://twitter.com/samczsun/status/1554252024723546112

https://www.certik.com/resources/blog/28fMavD63CpZJOKOjb9DX3-nomad-bridge-exploit-incident-analysis

https://blog.coinbase.com/nomad-bridge-incident-analysis-899b425b0f34

20220801 Reaper Farm - Business Logic Flaw : Lack of access control mechanism

Lost: Multiple ERC-20 Tokens (~1.7M US$)

Testing

forge test --contracts ./src/test/ReaperFarm.exp.sol -vvv 

Contract

ReaperFarm.exp.sol

Link reference

https://twitter.com/Reaper_Farm/status/1554500909740302337

https://twitter.com/BeosinAlert/status/1554476940593340421

20220725 LPC - Business Logic Flaw : Incorrect recipient balance check, did not check sender!=recipient in transfer

Lost: 178 BNB (~45,715 US$)

Testing

forge test --contracts ./src/test/LPC.exp.sol -vvv 

Contract

LPC.exp.sol

Link reference

https://www.panewslab.com/zh_hk/articledetails/uwv4sma2.html

https://twitter.com/BeosinAlert/status/1551535854681718784

20220723 Audius - Storage Collision & Malicious Proposal, storage collision of proxy and implementation contracts

Lost: 704 ETH (~1.08M US$)

Testing

forge test --contracts ./src/test/Audius.exp.sol -vvv 

Contract

Audius.exp.sol

Link reference

https://twitter.com/AudiusProject/status/1551000725169180672

https://twitter.com/1nf0s3cpt/status/1551050841146400768

https://blog.audius.co/article/audius-governance-takeover-post-mortem-7-23-22

20220713 SpaceGodzilla - Flashloans & Price Manipulation

Lost: 25,378 BUSD

Testing

forge test --contracts ./src/test/SpaceGodzilla.exp.sol -vvv 

Contract

SpaceGodzilla.exp.sol

Link reference

https://mobile.twitter.com/BlockSecTeam/status/1547456591900749824

https://www.panewslab.com/zh_hk/articledetails/u25j5p3kdvu9.html

https://medium.com/numen-cyber-labs/spacegodzilla-attack-event-analysis-d29a061b17e1

https://learnblockchain.cn/article/4396

https://learnblockchain.cn/article/4395 *** math behind such attack

20220710 Omni NFT - Reentrancy

Lost: $1.4M

Testing

forge test --contracts ./src/test/Omni_exp.sol -vv

Contract

Omni_exp.sol

Link reference

https://twitter.com/peckshield/status/1546084680138498049

https://twitter.com/SlowMist_Team/status/1546379086792388609

https://etherscan.io/tx/0x05d65e0adddc5d9ccfe6cd65be4a7899ebcb6e5ec7a39787971bcc3d6ba73996

20220706 FlippazOne NFT - Access control

The ownerWithdrawAllTo() without onlyOwner can call it.

Testing

forge test --contracts ./src/test/FlippazOne.sol -vvvv

Contract

FlippazOne.sol

Link reference

https://twitter.com/bertcmiller/status/1544496577338826752

https://etherscan.io/tx/0x8bded20c1db5a1d5f595b15e682a95ce11d3c895d6031147fa49c4ffa5729a30

20220703 CREMA FINANCE faulty owner validation (solana)

Lost: $8.8M

The attack was made possible due to faulty owner validation on one of the protocol’s accounts storing price tick data. These data are used by Crema to calculate LP fees.

Contract

Quixotic_exp.sol

Link reference

https://rekt.news/crema-finance-rekt/

https://twitter.com/Crema_Finance/status/1543638844410499073

20220701 Quixotic - Optimism NFT Marketplace

Lost: $100K

fillSellOrder function only check seller signature.

ECDSA signature combined with v r s, if recoveredAddress == sellOrder.seller; sellorder execute.

Testing

forge test --contracts ./src/test/Quixotic_exp.sol -vv

Contract

Quixotic_exp.sol

Link reference

https://twitter.com/1nf0s3cpt/status/1542808565349777408

https://twitter.com/SlowMist_Team/status/1542795627603857409

https://optimistic.etherscan.io/tx/0x5dc519726e1236eb846271f6699e03cdd1a8fd593a2900c71cd2aabbdb7c92e6

20220626 XCarnival - Infinite Number of Loans

Lost: 3087 ETH (~$3.87M)

Testing

forge test --contracts ./src/test/XCarnival.exp.sol -vv

Contract

XCarnival.exp.sol

Link reference

https://twitter.com/XCarnival_Lab/status/1541226298399653888

https://twitter.com/peckshield/status/1541047171453034501

https://twitter.com/BlockSecTeam/status/1541070850505723905

20220624 Harmony's Horizon Bridge - Private key compromised

Lost: $100 million

Private key compromised case of Multisig wallet

Testing

forge test --contracts ./src/test/Harmony_multisig.sol -vvvv

Contract

Harmony_multisig.sol

Link reference

https://twitter.com/harmonyprotocol/status/1540110924400324608

https://twitter.com/0xIvo/status/1540165571681128448

https://twitter.com/1nf0s3cpt/status/1540139812715261952

20220618 SNOOD - Miscalculation on _spendAllowance

Lost: 104 ETH

On _spendAllowance function they use _getStandardAmount and should be _getReflectedAmount

Testing

forge test --contracts ./src/test/Snood_poc.t.sol -vv

Contract

Snood_poc.t.sol

Link reference

https://ethereum.stackexchange.com/questions/130472/attack-on-erc-777-smart-contract-and-uniswapv2pair-resulting-in-104-eth-liquidit

https://etherscan.io/tx/0x9a6227ef97d7ce75732645bd604ef128bb5dfbc1bfbe0966ad1cd2870d45a20e

https://ethtx.info/mainnet/0x9a6227ef97d7ce75732645bd604ef128bb5dfbc1bfbe0966ad1cd2870d45a20e/

20220616 InverseFinance - Flashloan & Price Oracle Manipulation

Lost: 53.2445 WBTC and 99,976.29 USDT

Testing

forge test --contracts ./src/test/InverseFinance_exp.sol -vv

Contract

InverseFinance_exp.sol

Link reference

https://twitter.com/peckshield/status/1537382891230883841

https://twitter.com/SlowMist_Team/status/1537602909512376321

https://blocksecteam.medium.com/price-oracle-manipulation-attack-on-inverse-finance-a5544218ea91

https://www.certik.com/resources/blog/6LbL57WA3iMNm8zd7q111R-inverse-finance-incident-analysis

https://etherscan.io/tx/0x958236266991bc3fe3b77feaacea120f172c0708ad01c7a715b255f218f9313c

20220608 GYMNetwork - Access control

Lost: $2.1 million

Testing

forge test --contracts ./src/test/Gym_2_exp.sol -vv

Contract

Gym_2_exp.sol

Link reference

https://twitter.com/peckshield/status/1534423219607719936

https://twitter.com/1nf0s3cpt/status/1534464698069884929

https://www.jinse.com/news/blockchain/1658455.html

20220608 Optimism - Wintermute - Signature replay

Lost: 20 million Optimism (OP) tokens returned 17 million of them

Testing

forge test --contracts ./src/test/Optimism_exp.sol -vv

Contract

Optimism_exp.sol

Link reference

https://inspexco.medium.com/how-20-million-op-was-stolen-from-the-multisig-wallet-not-yet-owned-by-wintermute-3f6c75db740a

https://optimistic.etherscan.io/tx/0x75a42f240d229518979199f56cd7c82e4fc1f1a20ad9a4864c635354b4a34261

https://optimistic.etherscan.io/tx/0x00a3da68f0f6a69cb067f09c3f7e741a01636cbc27a84c603b468f65271d415b

20220606 Discover - Flashloan & Price Oracle Manipulation

Lost: 49 BNB

Testing

forge test --contracts ./src/test/Discover_exp.sol -vv

Contract

Discover_exp.sol

Link reference

https://www.twitter.com/BeosinAlert/status/1533734518623899648

https://www.anquanke.com/post/id/274003

https://bscscan.com/tx/0x8a33a1f8c7af372a9c81ede9e442114f0aabb537e5c3a22c0fd7231c4820f1e9

https://bscscan.com/tx/0x1dd4989052f69cd388f4dfbeb1690a3f3a323ebb73df816e5ef2466dc98fa4a4

20220529 NOVO Protocol - Flashloan & Price Oracle Manipulation

Lost: 279 BNB

Testing

forge test --contracts ./src/test/Novo_exp.sol -vvv

Contract

Novo_exp.sol

Link reference

https://www.panewslab.com/zh_hk/articledetails/f40t9xb4.html

https://bscscan.com/tx/0xc346adf14e5082e6df5aeae650f3d7f606d7e08247c2b856510766b4dfcdc57f

https://bscscan.com/address/0xa0787daad6062349f63b7c228cbfd5d8a3db08f1#code

20220524 HackDao - Skim token balance

Testing

forge test --contracts ./src/test/HackDao_exp.sol -vvv

Contract

HackDao_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1529084919976034304

20220517 ApeCoin (APE) - Flashloan

Lost: $1.1 million

buys vault token -> redeems NFTs -> claims airdrop of 60k APE -> re-supply's the pool Testing

forge test --contracts ./src/test/Bayc_apecoin_exp -vvv

Contract

Bayc_apecoin_exp.sol

Link reference

https://etherscan.io/tx/0xeb8c3bebed11e2e4fcd30cbfc2fb3c55c4ca166003c7f7d319e78eaab9747098

https://news.coincu.com/73892-the-flashloan-attack-on-the-ape-airdrop-to-claim-1-1-million-of-ape-tokens/

20220508 Fortress Loans - Malicious Proposal & Price Oracle Manipulation

Lost: 1,048.1 ETH + 400,000 DAI (~$3.00M)

Testing

forge test --contracts ./src/test/FortressLoans.exp.sol -vvv

Contract

FortressLoans.exp.sol

Link reference

https://twitter.com/Fortressloans/status/1523495202115051520

https://twitter.com/PeckShieldAlert/status/1523489670323404800

https://twitter.com/BlockSecTeam/status/1523530484877209600

https://www.certik.com/resources/blog/k6eZOpnK5Kdde7RfHBZgw-fortress-loans-exploit

20220430 Rari Capital/Fei Protocol - Flashloan Attack + Reentrancy

Lost: $80 million

Testing

forge test --contracts ./src/test/Rari_exp.t.sol -vv

Contract

Rari_exp.t.sol

Link reference

https://certik.medium.com/fei-protocol-incident-analysis-8527440696cc

https://twitter.com/peckshield/status/1520369315698016256

https://etherscan.io/tx/0xab486012f21be741c9e674ffda227e30518e8a1e37a5f1d58d0b0d41f6e76530

20220424 Wiener DOGE - Flashloan

Lost: 78 BNB

Testing

forge test --contracts ./src/test/Wdoge_exp.sol -vvv

Contract

Wdoge_exp.sol

Link reference

https://coinyuppie.com/four-combinations-of-hackers-analysis-of-attacks-on-wiener-doge-last-kilometer-medamon-and-pidao-projects/

https://twitter.com/solid_group_1/status/1519034573354676224

https://bscscan.com/tx/0x4f2005e3815c15d1a9abd8588dd1464769a00414a6b7adcbfd75a5331d378e1d

20220428 DEUS DAO - Flashloan & Price Oracle Manipulation

Lost: $13 million

Testing

forge test --contracts ./src/test/deus_exp.sol -vv

Contract

deus_exp.sol

Link reference

https://twitter.com/peckshield/status/1519531866109317121

https://ftmscan.com/tx/0xe374495036fac18aa5b1a497a17e70f256c4d3d416dd1408c026f3f5c70a3a9c

20220423 Akutar NFT - Denial of Service

Lost: 34M USD

Testing

forge test --contracts ./src/test/AkutarNFT_exp.sol -vv  

Contract

AkutarNFT_exp.sol

Link reference

https://blocksecteam.medium.com/how-akutar-nft-loses-34m-usd-60d6cb053dff

https://etherscan.io/address/0xf42c318dbfbaab0eee040279c6a2588fa01a961d#code

20220421 Zeed Finance - Reward distribution flaw

Lost: $1 million

Testing

forge test --contracts ./src/test/Zeed_exp.sol -vv

Contract

Zeed_exp.sol

Link reference

https://www.cryptotimes.io/hacker-leaves-1m-to-self-destruct-after-zeed-protocol-exploit/

https://medium.com/@zeedcommunity/the-solution-for-the-yeed-lp-pool-attack-a120c53948cd

https://bscscan.com/tx/0x0507476234193a9a5c7ae2c47e4c4b833a7c3923cefc6fd7667b72f3ca3fa83a

20220416 BeanstalkFarms - DAO + Flashloan

Lost: $182 million

Testing

forge test --contracts ./src/test/Beanstalk_exp.sol -vv

Contract

Beanstalk_exp.sol

Link reference

https://rekt.news/beanstalk-rekt/

https://medium.com/uno-re/beanstalk-farms-hacked-total-damage-is-182-million-b699dd3e5c8

https://twitter.com/peckshield/status/1515680335769456640

https://etherscan.io/tx/0x68cdec0ac76454c3b0f7af0b8a3895db00adf6daaf3b50a99716858c4fa54c6f

https://etherscan.io/tx/0xcd314668aaa9bbfebaf1a0bd2b6553d01dd58899c508d4729fa7311dc5d33ad7

20220415 Rikkei Finance - Access control & Price Oracle Manipulation

Lost: $1.1 million (2671 BNB)

Testing

forge test --contracts ./src/test/Rikkei_exp.sol -vv

Contract

Rikkei_exp.sol

Link reference

https://blockmagnates.com/rikkei-finance-hack/

https://knownseclab.com/news/625e865cf1c544005a4bdaf2

https://rikkeifinance.medium.com/rikkei-finance-incident-investigation-report-b5b1745b0155

https://bscscan.com/tx/0x93a9b022df260f1953420cd3e18789e7d1e095459e36fe2eb534918ed1687492

20220412 ElephantMoney - Flashloan & Price Oracle Manipulation

Lost: $11.2 million (27,416.46 BNB)

Testing

forge test --contracts ./src/test/Elephant_Money_poc.sol -vv

Contract

Elephant_Money_poc.sol

Link reference

https://medium.com/elephant-money/reserve-exploit-52fd36ccc7e8

https://twitter.com/peckshield/status/1514023036596330496

https://twitter.com/BlockSecTeam/status/1513966074357698563

https://bscscan.com/tx/0xec317deb2f3efdc1dbf7ed5d3902cdf2c33ae512151646383a8cf8cbcd3d4577

20220409 GYMNetwork - Flashloan + token migrate flaw

Lost: 1,327 WBNB

Testing

forge test --contracts ./src/test/Gym_1_exp.sol -vv

Contract

Gym_1_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1512832398643265537

https://medium.com/@Beosin_com/beosin-analysis-of-the-attack-on-gymdefi-e5a23bfd93fe

https://bscscan.com/tx/0xa5b0246f2f8d238bb56c0ddb500b04bbe0c30db650e06a41e00b6a0fff11a7e5

20220329 Ronin Network - Bridge

Lost: $624 million

Testing

forge test --contracts ./src/test/Ronin_exp.sol -vv

Contract

Ronin_exp.sol

Link reference

https://rekt.news/ronin-rekt/

https://etherscan.io/tx/0xc28fad5e8d5e0ce6a2eaf67b6687be5d58113e16be590824d6cfa1a94467d0b7

https://etherscan.io/tx/0xed2c72ef1a552ddaec6dd1f5cddf0b59a8f37f82bdda5257d9c7c37db7bb9b08

20220329 Redacted Cartel - Custom Approval Logic

Testing

forge test --contracts ./src/test/RedactedCartel_exp.sol -vv

Contract

RedactedCartel_exp.sol

Link reference

https://medium.com/immunefi/redacted-cartel-custom-approval-logic-bugfix-review-9b2d039ca2c5

20220327 Revest Finance - Reentrancy

Lost: $11.2 million

Testing

forge test --contracts ./src/test/Revest_exp.sol -vv

Contract

Revest_exp.sol

Link reference

https://blocksecteam.medium.com/revest-finance-vulnerabilities-more-than-re-entrancy-1609957b742f

https://etherscan.io/tx/0xe0b0c2672b760bef4e2851e91c69c8c0ad135c6987bbf1f43f5846d89e691428

20220326 Auctus

Lost: $726 k

Testing

forge test --contracts ./src/test/Auctus_exp.sol -vv

Contract

Auctus_exp.sol

Link reference

https://twitter.com/AuctusOptions/status/1508647849663291398?cxt=HHwWjICzpbzO5e8pAAAA

https://etherscan.io/tx/0x2e7d7e7a6eb157b98974c8687fbd848d0158d37edc1302ea08ee5ddb376befea

20220322 CompoundTUSDSweepTokenBypass

Testing

forge test --contracts ./src/test/CompoundTusd_exp.sol -vv

Contract

CompoundTusd_exp.sol

Link reference

https://blog.openzeppelin.com/compound-tusd-integration-issue-retrospective/

20220321 OneRing Finance - Flashloan & Price Oracle Manipulation

Lost: $1.45 million

Testing

forge test --contracts ./src/test/OneRing_exp.sol -vv

Contract

OneRing_exp.sol

Link reference

https://medium.com/oneringfinance/onering-finance-exploit-post-mortem-after-oshare-hack-602a529db99b

https://ftmscan.com/tx/0xca8dd33850e29cf138c8382e17a19e77d7331b57c7a8451648788bbb26a70145

20220320 Li.Fi - Bridges

Lost: $570K

Testing

forge test --contracts ./src/test/LiFi_exp.sol -vvvv

Contract

LiFi_exp.sol

Link reference

https://blog.li.fi/20th-march-the-exploit-e9e1c5c03eb9

https://twitter.com/lifiprotocol/status/1505738407938387971

https://etherscan.io/tx/0x4b4143cbe7f5475029cf23d6dcbb56856366d91794426f2e33819b9b1aac4e96

Fix

implemented a whitelist to only allow calls to approved DEXs.

20220320 Umbrella Network - Underflow

Testing

forge test --contracts ./src/test/Umbrella_exp.sol -vv

Contract

Umbrella_exp.sol

Link reference

https://medium.com/uno-re/umbrella-network-hacked-700k-lost-97285b69e8c7

https://etherscan.io/tx/0x33479bcfbc792aa0f8103ab0d7a3784788b5b0e1467c81ffbed1b7682660b4fa

20220313 Hundred Finance - ERC667 Reentrancy

Lost: $1.7 million

Testing

forge test --contracts ./src/test/HundredFinance_exp.sol -vv

Contract

HundredFinance_exp.sol

Link reference

https://medium.com/immunefi/a-poc-of-the-hundred-finance-heist-4121f23a098

https://gnosisscan.io/tx/0x534b84f657883ddc1b66a314e8b392feb35024afdec61dfe8e7c510cfac1a098

20220313 Paraluni - Flashloan & Reentrancy

Lost: $1.7 million

Testing

forge test --contracts ./src/test/Paraluni_exp.sol -vv

Contract

Paraluni_exp.sol

Link reference

https://halborn.com/explained-the-paraluni-hack-march-2022/

https://twitter.com/peckshield/status/1502815435498176514

https://mobile.twitter.com/paraluni/status/1502951606202994694

https://zhuanlan.zhihu.com/p/517535530

https://bscscan.com/tx/0x70f367b9420ac2654a5223cc311c7f9c361736a39fd4e7dff9ed1b85bab7ad54

20220309 Fantasm Finance - Business logic in mint()

Lost: $2.6 million

Testing

forge test --contracts ./src/test/Fantasm_exp.sol -vv

Contract

Fantasm_exp.sol

Link reference

https://twitter.com/fantasm_finance/status/1501569232881995785

https://medium.com/quillhash/fantom-based-protocol-fantasm-suffers-2-6m-exploit-32de8191ccd4

https://etherscan.io/tx/0xacfcaa8e1c482148f9f2d592c78ca7a27934c7333dab31978ed0aef333a28ab6

20220305 Bacon Protocol - Reentrancy

Lost: $1 million

Testing

forge test --contracts ./src/test/Bacon_exp.sol -vv

Contract

Bacon_exp.sol

Link reference

https://twitter.com/peckshield/status/1500105933128495108

https://etherscan.io/tx/0xacfcaa8e1c482148f9f2d592c78ca7a27934c7333dab31978ed0aef333a28ab6

https://etherscan.io/tx/0x7d2296bcb936aa5e2397ddf8ccba59f54a178c3901666b49291d880369dbcf31

20220303 TreasureDAO - Zero Fee

Lost: $1 million

Testing

forge test --contracts ./src/test/TreasureDAO_exp.sol -vv

Contract

TreasureDAO_exp.sol

Link reference

https://slowmist.medium.com/analysis-of-the-treasuredao-zero-fee-exploit-73791f4b9c14

https://arbiscan.io/tx/0x82a5ff772c186fb3f62bf9a8461aeadd8ea0904025c3330a4d247822ff34bc02

20220214 BuildFinance - DAO

Lost: $470k

Testing

forge test --contracts ./src/test/BuildF_exp.sol -vv

Contract

BuildF_exp.sol

Link reference

https://twitter.com/finance_build/status/1493223190071554049

https://www.cryptotimes.io/build-finance-suffered-hostile-governance-takeover-lost-470k/

https://etherscan.io/tx/0x544e5849b71b98393f41d641683586d0b519c46a2eeac9bcb351917f40258a85

20220208 Sandbox LAND - Access control

Testing

forge test --contracts ./src/test/Sandbox_exp.sol -vv

Contract

Sandbox_exp.sol

Link reference

https://slowmist.medium.com/the-vulnerability-behind-the-sandbox-land-migration-2abf68933170

https://etherscan.io/tx/0x34516ee081c221d8576939f68aee71e002dd5557180d45194209d6692241f7b1

20220206 Meter - Bridge

Lost: $4.3 million

Testing

Solana TBD
forge test --contracts ./src/test/meter_exp.sol -vv

Contract

meter_exp.sol

Link reference

https://twitter.com/ishwinder/status/1490227406824685569

https://blog.chainsafe.io/breaking-down-the-meter-io-hack-a46a389e7ae4

this does not seem to be the correct transaction though: https://moonriver.moonscan.io/tx/0x5a87c24d0665c8f67958099d1ad22e39a03aa08d47d00b7276b8d42294ee0591

20220128 Qubit Finance - Bridge address(0).safeTransferFrom() does not revert

Lost: $80 million

Testing

forge test --contracts ./src/test/Qubit_exp.sol -vv

Contract

qubit_exp.sol

Link reference

https://rekt.news/qubit-rekt/

https://medium.com/@QubitFin/protocol-exploit-report-305c34540fa3

https://etherscan.io/address/0xd01ae1a708614948b2b5e0b7ab5be6afa01325c7 https://etherscan.io/tx/0xac7292e7d0ec8ebe1c94203d190874b2aab30592327b6cc875d00f18de6f3133 https://bscscan.com/tx/0x50946e3e4ccb7d39f3512b7ecb75df66e6868b9af0eee8a7e4b61ef8a459518e

20220118 Multichain (Anyswap) - Insufficient Token Validation

Lost: $1.4 million

Testing

forge test --contracts ./src/test/Anyswap_poc.t.sol -vv

Contract

Anyswap_poc.t.sol

Link reference

https://medium.com/zengo/without-permit-multichains-exploit-explained-8417e8c1639b

https://twitter.com/PeckShieldAlert/status/1483363515411099651

https://etherscan.io/tx/0xe50ed602bd916fc304d53c4fed236698b71691a95774ff0aeeb74b699c6227f7

20211221 Visor Finance - Reentrancy

Lost: $8.2 million

Testing

forge test --contracts ./src/test/Visor_exp.t.sol -vv

Contract

Visor_exp.t.sol

Link reference

https://beosin.medium.com/two-vulnerabilities-in-one-function-the-analysis-of-visor-finance-exploit-a15735e2492

https://twitter.com/GammaStrategies/status/1473306777131405314

https://etherscan.io/tx/0x69272d8c84d67d1da2f6425b339192fa472898dce936f24818fda415c1c1ff3f

20211218 Grim Finance - Flashloan & Reentrancy

Lost: $30 million

Testing

forge test --contracts ./src/test/Grim_exp.sol -vv

Contract

Grim_exp.sol

Link reference

https://cointelegraph.com/news/defi-protocol-grim-finance-lost-30m-in-5x-reentrancy-hack

https://rekt.news/grim-finance-rekt/

https://ftmscan.com/tx/0x19315e5b150d0a83e797203bb9c957ec1fa8a6f404f4f761d970cb29a74a5dd6

20211130 MonoX Finance - Price Manipulation

Lost: $31 million

Testing

forge test --contracts ./src/test/Mono_exp.t.sol -vv

Contract

Mono_exp.t.sol

Link reference

https://slowmist.medium.com/detailed-analysis-of-the-31-million-monox-protocol-hack-574d8c44a9c8

https://knownseclab.com/news/61a986811992da0067558749

https://www.tuoniaox.com/news/p-521076.html

https://polygonscan.com/tx/0x5a03b9c03eedcb9ec6e70c6841eaa4976a732d050a6218969e39483bb3004d5d

https://etherscan.io/tx/0x9f14d093a2349de08f02fc0fb018dadb449351d0cdb7d0738ff69cc6fef5f299

20210916 SushiSwap Miso

Lost: All funds returned

Testing

forge test --contracts ./src/test/Sushimiso_exp.sol -vv

Contract

Sushimiso_exp.sol

Link reference

https://www.paradigm.xyz/2021/08/two-rights-might-make-a-wrong

https://etherscan.io/tx/0x78d6355703507f88f2090eb780d245b0ab26bf470eabdb004761cedf3b1cda44

20210915 Nimbus Platform

Lost: 1.45 ETH

Testing

forge test --contracts ./src/test/Nimbus_exp.sol -vv

Contract

Nimbus_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1438100688215560192

20210915 NowSwap Platform

Lost: 158.28 WETH and 535,706 USDT

Testing

forge test --contracts ./src/test/NowSwap_exp.sol -vv

Contract

Nimbus_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1438100688215560192

20210912 ZABU Finance - Deflationary token uncompatible

Testing

forge test --contracts src/test/ZABU_exp.sol -vvv

Contract

ZABU_exp.sol

Link reference

https://slowmist.medium.com/brief-analysis-of-zabu-finance-being-hacked-44243919ea29

20210903 DAO Maker - Bad Access Controal

Lost: $4 million

Testing

forge test --contracts ./src/test/DaoMaker_exp.sol -vv

Contract

DaoMaker_exp.sol

Link reference

https://twitter.com/Mudit__Gupta/status/1434059922774237185

https://etherscan.io/tx/0xd5e2edd6089dcf5dca78c0ccbdf659acedab173a8ab3cb65720e35b640c0af7c

20210830 Cream Finance - Flashloan Attack + Reentrancy

Lost: $18 million

Testing

forge test --contracts ./src/test/Cream_exp.sol -vv

Contract

Cream_exp.sol

Link reference

https://twitter.com/peckshield/status/1432249600002478081

https://etherscan.io/tx/0xa9a1b8ea288eb9ad315088f17f7c7386b9989c95b4d13c81b69d5ddad7ffe61e

https://slowmist.medium.com/cream-hacked-analysis-us-130-million-hacked-95c9410320ca

20210811 Poly Network - Bridge, getting around modifier through cross-chain message

Lost: $611 million

Testing

forge test --contracts ./src/test/PolyNetwork/PolyNetwork_exp.sol -vv

Contract

PolyNetwork_exp.sol

Link reference

https://rekt.news/polynetwork-rekt/

https://slowmist.medium.com/the-root-cause-of-poly-network-being-hacked-ec2ee1b0c68f

https://etherscan.io/tx/0xb1f70464bd95b774c6ce60fc706eb5f9e35cb5f06e6cfe7c17dcda46ffd59581/advanced

https://github.com/polynetwork/eth-contracts/tree/d16252b2b857eecf8e558bd3e1f3bb14cff30e9b

https://www.breadcrumbs.app/reports/671

FIX

One of the biggest design lessons that people need to take away from this is: if you have cross-chain relay contracts like this, MAKE SURE THAT THEY CAN'T BE USED TO CALL SPECIAL CONTRACTS. The EthCrossDomainManager shouldn't have owned the EthCrossDomainData contract.

20210817 XSURGE - Flashloan Attack + Reentrancy

Lost: $5 million

Testing

forge test --contracts ./src/test/XSURGE_exp.t.sol -vv

Contract

XSURGE_exp.t.sol

Link reference

https://beosin.medium.com/a-sweet-blow-fb0a5e08657d

https://medium.com/@Knownsec_Blockchain_Lab/knownsec-blockchain-lab-comprehensive-analysis-of-xsurge-attacks-c83d238fbc55

https://bscscan.com/tx/0x8c93d6e5d6b3ec7478b4195123a696dbc82a3441be090e048fe4b33a242ef09d

20210710 Chainswap - Bridge, logic flaw

Lost: $4.4 million

Testing

forge test --contracts ./src/test/Chainswap_exp2.sol -vv

Contract

Chainswap_exp2.sol

Link reference

https://twitter.com/real_n3o/status/1414071223940571139

https://rekt.news/chainswap-rekt/

https://chain-swap.medium.com/chainswap-exploit-11-july-2021-post-mortem-6e4e346e5a32

20210702 Chainswap - Bridge, logic flaw

Lost: $.8 million

Testing

forge test --contracts ./src/test/Chainswap_exp1.t.sol -vv

Contract

Chainswap_exp1.t.sol

Link reference

https://chain-swap.medium.com/chainswap-post-mortem-and-compensation-plan-90cad50898ab

20210628 SafeDollar - Deflationary token uncompatible

Lost: $.2 million

Testing

forge test --contracts src/test/SafeDollar_exp.sol -vvv

Contract

SafeDollar_exp.sol

Link reference

https://twitter.com/peckshield/status/1409443556251430918

20210622 Eleven Finance - Doesn’t burn shares

Testing

forge test --contracts ./src/test/Eleven.sol -vv

Contract

Eleven.sol

Link reference

https://peckshield.medium.com/eleven-finance-incident-root-cause-analysis-123b5675fa76

https://bscscan.com/tx/0xeaaa8f4d33b1035a790f0d7c4eb6e38db7d6d3b580e0bbc9ba39a9d6b80dd250

20200618 Bancor Protocol - Access Control

Testing

forge test --contracts ./src/test/Bancor_exp.sol -vv

Contract

Bancor_exp.sol

Link reference

https://blog.bancor.network/bancors-response-to-today-s-smart-contract-vulnerability-dc888c589fe4

https://etherscan.io/address/0x5f58058c0ec971492166763c8c22632b583f667f

20210607 88mph NFT - Access control

Testing

forge test --contracts ./src/test/88mph_exp.sol -vv

Contract

88mph_exp.sol

Link reference

https://medium.com/immunefi/88mph-function-initialization-bug-fix-postmortem-c3a2282894d3

20210603 PancakeHunny - Incorrect calculation

Testing

forge test --contracts ./src/test/PancakeHunny_exp.sol -vv

Contract

PancakeHunny_exp.sol

Link reference

https://medium.com/hunnyfinance/pancakehunny-post-mortem-analysis-de78967401d8

https://bscscan.com/tx/0x765de8357994a206bb90af57dcf427f48a2021f2f28ca81f2c00bc3b9842be8e

20210519 PancakeBunny - Price Oracle Manipulation

Testing

forge test --contracts ./src/test/PancakeBunny_exp.sol --fork-url <BSC-RPC-URL> --fork-block-number 7556330 -vv

Contract

PancakeBunny_exp.sol

Link reference

https://rekt.news/pancakebunny-rekt/

https://bscscan.com/tx/0x897c2de73dd55d7701e1b69ffb3a17b0f4801ced88b0c75fe1551c5fcce6a979

20210428 Uranium - Miscalculation

Lost: $50 million

Testing

forge test --contracts ./src/test/Uranium_exp.sol -vv

Contract

Uranium_exp.sol

Link reference

https://twitter.com/FrankResearcher/status/1387347025742557186

https://bscscan.com/tx/0x5a504fe72ef7fc76dfeb4d979e533af4e23fe37e90b5516186d5787893c37991

20210308 DODO - Flashloan Attack

Lost: $700,000

Testing

forge test --contracts ./src/test/dodo_flashloan_exp.sol -vv

Contract

dodo_flashloan_exp.sol

Link reference

https://blog.dodoex.io/dodo-pool-incident-postmortem-with-a-little-help-from-our-friends-327e66872d42

https://halborn.com/explained-the-dodo-dex-hack-march-2021/

https://etherscan.io/tx/0x395675b56370a9f5fe8b32badfa80043f5291443bd6c8273900476880fb5221e

20201229 Cover Protocol

Testing

forge test --contracts ./src/test/Cover_exp.sol -vv

Contract

Cover_exp.sol

Link reference

https://mudit.blog/cover-protocol-hack-analysis-tokens-minted-exploit/

https://slowmist.medium.com/a-brief-analysis-of-the-cover-protocol-hacked-event-700d747b309c

20201121 Pickle Finance

Lost: $20 million

Testing

forge test --contracts ./src/test/Pickle_exp.sol -vv

Contract

Pickle_exp.sol

Link reference

https://github.com/banteg/evil-jar

https://etherscan.io/tx/0xe72d4e7ba9b5af0cf2a8cfb1e30fd9f388df0ab3da79790be842bfbed11087b0

20201026 Harvest Finance - Flashloan Attack

Lost: $33.8 million

Testing

forge test --contracts ./src/test/HarvestFinance_exp.sol -vv

Contract

HarvestFinance_exp.sol

Link reference

https://mudit.blog/cover-protocol-hack-analysis-tokens-minted-exploit/

https://slowmist.medium.com/a-brief-analysis-of-the-cover-protocol-hacked-event-700d747b309c

https://rekt.news/harvest-finance-rekt/

https://etherscan.io/tx/0x35f8d2f572fceaac9288e5d462117850ef2694786992a8c3f6d02612277b0877

20180422 Beauty Chain - Integer Overflow

Lost: $900 million

Testing

forge test --contracts ./src/test/BEC_exp.sol -vv

Contract

BEC_exp.sol

Link reference

https://etherscan.io/tx/0xad89ff16fd1ebe3a0a7cf4ed282302c06626c1af33221ebe0d3a470aba4a660f

https://etherscan.io/address/0xc5d105e63711398af9bbff092d4b6769c82f793d#code

20171106 Parity - 'Accidentally Killed It'

Lost: 514k ETH

Testing

forge test --contracts ./src/test/Parity_kill.sol -vvvv

Contract

Parity_kill.sol

Link reference

https://elementus.io/blog/which-icos-are-affected-by-the-parity-wallet-bug/

https://etherscan.io/tx/0x05f71e1b2cb4f03e547739db15d080fd30c989eda04d37ce6264c5686e0722c9

https://etherscan.io/tx/0x47f7cff7a5e671884629c93b368cb18f58a993f4b19c2a53a8662e3f1482f690

View Gas Reports

Foundry also has the ability to report the gas used per function call which mimics the behavior of hardhat-gas-reporter. Generally speaking if gas costs per function call is very high, then the likelihood of its success is reduced. Gas optimization is an important activity done by smart contract developers.

Every poc in this repository can produce a gas report like this:

forge test --gas-report --contracts <contract> -vvv

For Example: Let us find out the gas used in the Audius poc

Execution

forge test --gas-report --contracts ./src/test/Audius.exp.sol -vvv 

Demo

Bug Reproduce

Moved to DeFiVulnLabs

FlashLoan Testing

Moved to DeFiLabs