DeFi Hacks Reproduce - Foundry

Reproduce DeFi hack incidents using Foundry.

114 incidents included.

This repo is only for the educational purpose.

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Notion: root cause analysis

Getting Started

• Follow the instructions to install Foundry.

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

List of DeFi Hacks & Exploits

20221105 BDEX

20221027 VTF

20221027 Team Finance

20221026 N00d Token

20221026 ULME

20221024 MulticallWithoutCheck

20221021 OlympusDAO

20221020 HEALTH Token

20221020 BEGO Token

20221018 HPAY

20221018 PLTD Token

20221017 Uerii Token

20221014 INUKO Token

20221014 EFLeverVault

20221014 MEVBOT a47b

20221012 ATK

20221011 Rabby Wallet SwapRouter

20221011 Templedao

20221010 Carrot

20221009 Xave Finance

20221006 RES-Token

20221002 Transit Swap

20221001 BabySwap

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

20210817 XSURGE

20210811 Poly Network

20210804 WaultFinance

20210728 Levyathan Finance

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

20200618 Bancor Protocol

20180422 Beauty Chain

20171106 Parity - 'Accidentally Killed It'

---

Transaction debugging tools

Phalcon | Tx.viewer | Cruise |Ethtx | Tenderly

Ethereum Signature Database

4byte | sig.eth | etherface

Useful tools

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

Hacks Dashboard

Slowmist | Defillama | Defiyield | Rekt | Cryptosec

---

20221105 BDEX - Business Logic Flaw

Lost: 16WBNB

Testing

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

Contract

BDEX_exp.sol

Link reference

https://twitter.com/BeosinAlert/status/1588579143830343683

---

20221027 VTF Token - Incorrect Reward calculation

Lost: $50k

Testing

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

Contract

VTF_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1585575129936977920

https://twitter.com/peckshield/status/1585572694241988609

https://twitter.com/BeosinAlert/status/1585587030981218305

---

20221027 Team Finance - Liquidity Migration Exploit

Lost: Multiple Tokens ~$15.8M US$

Testing

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

Contract

TeamFinance.exp.sol

Link reference

https://twitter.com/TeamFinance_/status/1585770918873542656

https://twitter.com/peckshield/status/1585587858978623491

https://twitter.com/solid_group_1/status/1585643249305518083

https://twitter.com/BeosinAlert/status/1585578499125178369

---

20221026 N00d Token - Reentrancy

Lost $29k

Testing

forge test --contracts src/test/N00d_exp.sol -vvv

Contract

N00d_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1584959295829180416

https://twitter.com/AnciliaInc/status/1584955717877784576

---

20221026 ULME - Access Control

Lost ~200k US$ which resulted in ~50k profit

Testing

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

Contract

ULME.sol

Link reference

https://twitter.com/BlockSecTeam/status/1584839309781135361 https://twitter.com/BeosinAlert/status/1584888021299916801

---

20221024 MulticallWithoutCheck - Arbitrary External Call Vulnerability

Lost $600

Testing

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

Contract

MulticallWithoutCheck_exp.sol

---

20221021 OlympusDAO - No input validation

Lost ~$292K (30500 OHM)

Testing

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

Contract

OlympusDao.exp.sol

Link reference

https://twitter.com/peckshield/status/1583416829237526528

---

20221020 HEALTH - Transfer Logic Flaw

Lost 16 BNB

Testing

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

Contract

HEALTH_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1583073442433495040

---

20221020 BEGO - Incorrect signature verification

Lost 12 BNB

Testing

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

Contract

BEGO_exp.sol

Link reference

https://twitter.com/AnciliaInc/status/1582828751250784256

https://twitter.com/peckshield/status/1582892058800685058

---

20221018 HPAY - Access Control

Lost: 115 BNB

Testing

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

Contract

HPAY_exp.sol

Link reference

https://twitter.com/Supremacy_CA/status/1582345448190140417

---

20221018 PLTD - Transfer Logic Flaw

Lost: $ 24k

Testing

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

Contract

PLTD_exp.sol

Link reference

https://twitter.com/BeosinAlert/status/1582181583343484928

---

20221017 Uerii Token - Access Control

Lost: $2.4 k

Testing

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

Contract

Uerii_exp.sol

Link reference

https://twitter.com/peckshield/status/1581988895142526976

---

20221014 INUKO - FlashLoan price manipulation

Lost: $50k

Testing

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

Contract

INUKO_exp.sol

Link reference

https://twitter.com/AnciliaInc/status/1587848874076430336

---

20221014 EFLeverVault - Verify flashLoan Callback

Lost: 750 ETH

Testing

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

Contract

EFLeverVault_exp.sol

Link reference

https://twitter.com/Supremacy_CA/status/1581012823701786624

https://twitter.com/MevRefund/status/1580917351217627136

https://twitter.com/danielvf/status/1580936010556661761

---

20221014 MEVBOTa47b - MEVBOT a47b

Lost: $241 k

Testing

forge test --contracts ./src/test/MEVa47b_exp.sol -vvv  

Contract

MEVa47b_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1580779311862190080

https://twitter.com/AnciliaInc/status/1580705036400611328

https://etherscan.io/tx/0x35ecf595864400696853c53edf3e3d60096639b6071cadea6076c9c6ceb921c1

---

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 Rabby Wallet SwapRouter - Arbitrary External Call Vulnerability

Lost: ~200,000 US$

Testing

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

Contract

RabbyWallet_SwapRouter.exp.sol

Link reference

https://twitter.com/Supremacy_CA/status/1579813933669486592

https://twitter.com/SlowMist_Team/status/1579839744128978945

https://twitter.com/BeosinAlert/status/1579856733178331139

---

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 BabySwap - Parameter Access Control

Testing

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

Contract

BabySwap_exp.sol

Link reference

https://twitter.com/BlockSecTeam/status/1576441612812836865

---

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

https://bscscan.com/tx/0x57aa9c85e03eb25ac5d94f15f22b3ba3ab2ef60b603b97ae76f855072ea9e3a0

---

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

Lost: 94,304 USDT

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

Lost: $140 K

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/SlowMist_Team/status/1567854876633309186

https://bscscan.com/tx/0x1fea385acf7ff046d928d4041db017e1d7ead66727ce7aacb3296b9d485d4a26

---

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

https://snowtrace.io/tx/0x0ab12913f9232b27b0664cd2d50e482ad6aa896aeb811b53081712f42d54c026

---

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

https://bscscan.com/tx/0xe176bd9cfefd40dc03508e91d856bd1fe72ffc1e9260cd63502db68962b4de1a

---

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

https://bscscan.com/tx/0xe30dc75253eecec3377e03c532aa41bae1c26909bc8618f21fb83d4330a01018

---

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

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://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/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

---

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.sol -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/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://www.certik.com/resources/blog/5p92144WQ44Ytm1AL4Jt9X-fantasm-finance

---

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

NowSwap_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://twitter.com/creamdotfinance/status/1432249773575208964

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

---

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

---

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.

---

20210804 WaultFinace - FlashLoan price manipulation

Lost: 390 ETH

Testing

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

Contract

WaultFinance_exp.sol

Link reference

https://medium.com/@Knownsec_Blockchain_Lab/wault-finance-flash-loan-security-incident-analysis-368a2e1ebb5b

https://inspexco.medium.com/wault-finance-incident-analysis-wex-price-manipulation-using-wusdmaster-contract-c344be3ed376

---

20210728 Levyathan Finance - (I) Lost keys and minting (II) Vulnerable emergencyWithdraw

Lost: $1.5 million

Testing

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

Contract

Levyathan_poc.sol

Link reference

https://levyathan-index.medium.com/post-mortem-levyathan-c3ff7f9a6f65

---

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.sol -vv

Contract

Chainswap_exp1.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

---

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

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

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

---

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