EtherFuzz: Mutation Fuzzing Smart Contracts for TOD Vulnerability Detection

Table 1

Mutation operations.

Mutation operations	Detail
singleFlipBit, twoFlipBit, and fourFlipBit	Flip a randomly selected
	1/2/4 consecutive bits
singleFlipByte, twoFlipByte, and fourFlipByte	Flip a randomly selected
	1/2/4 consecutive bytes
singleIncrease, twoIncrease, and fourIncrease	Increase a random selected
	1/2/4 bytes by a constant
singleSubstitute, twoSubstitute, and fourSubstitute	Replace randomly selected 1/2/4 bytes with special constants
overwriteWithDictionary	Replace a value at random with a constant from the smart contract
overwriteWithAddressDictionary	Replace the address and balance in the test data with the randomly generated address and balance