ChainBleedv0.1 · open intel
← back to feed·BSCFLASHLOAN2021-05-17 · 5y ago
Incident · DEFILLAMA

BearnFi

Flashloan Withdraw Logic Exploit
Estimated loss
$18.00M
VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
▰ METHOD
Flashloan Withdraw Logic Exploit
FLASHLOANBYTECODE CATCHABLEAI SCANNABLE
Root cause

Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.

▰ PROOF OF CONCEPT
DEFIHACKLABS
src/test/2021-05/bEarn_exp.sol
view forked test on github ↗

Reproducible Foundry test fork from SunWeb3Sec/DeFiHackLabs. Clone the repo, run forge test against the file path above, and replay the exploit against a mainnet fork at the historical block. Use for reproduction only — not for live targets.

Forensic narrative

Classification: Ecosystem. Technique: Flashloan Withdraw Logic Exploit. Target type: DeFi Protocol. Affected chains: BSC.

Sourced from
DefiLlama Hacks dataset · api.llama.fi/hacks
Technical record
chain
bsc
protocol
BearnFi
bug_class
flashloan
date_occurred
2021-05-17
loss_usd
$18,000,000
classification
Ecosystem
technique
Flashloan Withdraw Logic Exploit
target_type
DeFi Protocol
source_id
dl:387
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