21 Sneaky Smart Contract Bugs | Do Not Miss These!
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Yul & Memory Intro | Yul Exploit!: • Yul & Memory Intro | Yul Exploit!
00:00 - Intro
02:52 - #1 Deleting structs does not delete containing mappings or lists
04:53 - #2 Immutable values are not maintained on upgrade
05:41 - #3 Subtractions that underflow & revert
07:02 - #4 Downcasting can still overflow
07:50 - #5 Not having a withdraw method for received ether
08:58 - #6 Parallel data structures
11:28 - #7 Typos
12:15 - #8 Mstore does not update the free memory pointer
12:51 - #9 Using transfer or send
13:19 - #10 Division symbols
14:15 - #11 Handling units wrong
15:09 - #12 Assuming every contract can accept ether/tokens
15:51 - #13 Loading in the return value of .call
17:00 - #14 Using for-loops to push rather than pull
18:31 - #15 Using msg.value in a loop
20:11 - #16 Decoding arbitrary bytes that can come from an untrusted address
21:16 - #17 Tx.origin used for authentication
21:51 - #18 Correctly validating the freshness of prices
22:52 - #19 Fee-on-transfer tokens
23:54 - #20 Off by one errors
25:07 - #21 Chain compatibility
27:14 - Get a free quote
28:13 - Join the Solidity lab