Zerogoki Hack

Reported loss $670K
Ethereum
Other

What happened

Zerogoki was attacked by way of compromising the price oracle. The attacker provided a price oracle signed by legitimate private keys, which contained a crafted number of tokens to be swapped. However, the reason why the attacker could construct a valid signature is unknown.

The attacker's address:

Address 0xaef4…680d

The transaction behind the attack:

Tx 0x81e5…acf8

In the attack transaction, the attacker constructed a message that contained valid signatures and passed a crafted ns parameter (which contains a large number of zUSD). As a result, the attacker used 300 REI to swap 700k zUSD.

Three addresses that are collated with the signatures are:

0x0d93A21b…76261C

0x3054e197…67aa4a

0x4448993f…77dfd2

Protocol details

Classification Other / Oracle Manipulation
Protocol Type Exploit/Other
Affected asset / contract REI
Implementation language Solidity
Protocol links Website @0Zerogoki

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