ChainBleedv0.1 · open intel
← back to feed·FLASHLOAN2022-03-21 · 4y ago
Incident · SLOWMIST

OneRing

Flash loan attack
Estimated loss
$1.45M
VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
▰ METHOD
FLASHLOAN
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/2022-03/OneRing_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

Fantom ecological Stablecoin revenue optimizer OneRing issued a document saying that hackers stole 1,454,672.244369 USDC through flash loan attacks, and the contract has been configured to self-destruct in a specific block, so it is almost impossible to track which specific functions in the contract are called to steal funds. . Attack method (per SlowMist): Flash loan attack. Reported loss: $ 1,454,672.24.

Primary source
https://medium.com/oneringfinance/onering-finance-exploit-post-mortem-after-oshare-hack-602a529db99b
Sourced from
slowmist
Technical record
chain
protocol
OneRing
bug_class
flashloan
date_occurred
2022-03-21
loss_usd
$1,454,672
source_id
sm:onering::2022-03-21
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