bZx Hack II Full Disclosure (With Detailed Profit Analysis)

bZx Hack II: Five Exploitation Steps With Oracle Manipulation

Five Exploitation Steps For Profit

The exploit occurs at 2020–02–18 03:13:58 +0000 (Ethereum block height #9504627). The culprit transaction can be found on etherscan. As mentioned earlier, this attack process can be separated into the following steps:

Figure 1: Flash Borrowing From bZx
Figure 2: Pumping With Kyber (and Uniswap)
Figure 3: Hoarding From Synthetic
Figure 4: Collateralized Borrowing From bZx
Figure 5: Repay the Flashloan to bZx

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