MGF15

M | Approval Race Protections

Description :-

Some tokens (e.g. USDT, KNC) do not allow approving an amount M > 0 when an existing amount N > 0 is already approved. This is to protect from an ERC20 attack vector describe here

Proof Of Concept

File:wemix-lending-contract-main/contracts/lending/TeamMinter.sol

MGF15

ID	Title	Category	Severity	Instances
[1]	Centralization Risk for trusted owners	Centralization / Privilege	Med	7
[2]	will not work properly on Optimism due to use of block.number	Volatile Code	Med	4
[3]	Initializers could be front-run	Data Flow	Low	3
[4]	Loss of precision	Data Flow	Low	1
[5]	Use safeTransferOwnership instead of transferOwnership function	Control Flow	Low	2
[6]	Unbounded loop	Control Flow	Low	21
[7]	Use Ownable2Step's transfer function rather than Ownable's for transfers of ownership	Centralization / Privilege	Low	1

MGF15

Gas Optimizer Report

Medium Risk Issues

	Issue	Instances
Med-1	Centralization Risk for trusted owners	7
Med-2	Contracts are vulnerable to fee-on-transfer-token-related accounting issues	3

MGF15

#!/usr/bin/python
import os,urllib,re,json,sys

#simple script based on acoustid audio identification api and fpcalc tool 
#download Chromaprint-fpcalc from https://acoustid.org/chromaprint
#you know ! it's just get fingerprint from audio file by fpcalc and make a request to acoustid as simple as that !  

def main(file):

        url = "https://api.acoustid.org/v2/lookup?client="

MGF15

#!/usr/bin/python
# Morse Code 
# Encode & Decode
# http://stackoverflow.com/questions/32094525/morse-code-to-english-python3?answertab=votes#tab-top
# direction from ^ LOL i'm too lazy 
# add . to @ from wiki ;) https://en.wikipedia.org/wiki/Morse_code

CODE = {'A': '.-',     'B': '-...',   'C': '-.-.', 
  'D': '-..',    'E': '.',      'F': '..-.',
  'G': '--.',    'H': '....',   'I': '..',