VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
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/2018-10/SpankChain_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
The attacker created a malicious contract masquerading as an ERC20 token, and the "transfer" function re-invokes the payment channel contract repeatedly, each time exhausting some ETH. Attack method (per SlowMist): Reentrancy attack. Reported loss: 165.38 ETH.
Sourced from
slowmist
Technical record
- chain
- —
- protocol
- SpankChain
- bug_class
- reentrancy
- date_occurred
- 2018-10-09
- loss_usd
- —
- source_id
- sm:spankchain::2018-10-09
Related — same bug class· reentrancy