EVM Puzzle 4 combines a number of opcodes that we have already been introduced to and one new one, XOR. The first two codes are CALLVALUE and CODESIZE.CALLVALUE is equal to the amount of Wei we use to make the call.CODESIZE is equal to the byte size of the code. The description of XOR tells […]
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EVM puzzle number three holds just 6 op codes for us to decipher. Starting with 36 CALLDATASIZE, then 56 JUMP, and our 5B JUMPDEST is 3 slots under at the 04 index. Heading over to evm.code’s playground, let’s input our opcodes and do a test call with an arbitrary value to view how we step
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EVM puzzles gives us byte code and asks us for a value that will succeed as a transaction. If you missed my original post that goes more in detail about how to decipher the Opcodes and the tools we are using, see it here. Puzzle 2 introduces us to some new Opcodes, as well as
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EVM Puzzles is a GitHub repo from fvictorio containing a collection of puzzles to teach how the EVM operates. For each challenge we are supplied with the bytecode of the contract, the objective is to send a successful transaction. In some puzzles you only need to provide the value that will be sent to the
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