FLYINU [Fly INU] Token

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

FLYINU._transfer(address,address,uint256) (#689-730) uses a dangerous strict equality:
- cooldown[to] == 0 (#701)
FLYINU._transfer(address,address,uint256) (#689-730) uses a dangerous strict equality:
- (block.number.sub(cooldown[from]) < 2) || (block.number.sub(cooldown[from]) == 100) (#713)
Don't use strict equality to determine if an account has enough Ether or tokens.

Additional information: link

FLYINU._transfer(address,address,uint256).total_fee (#707) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

FLYINU.SetTaxFeePercent(uint256) (#666-668) should emit an event for:
- varMarketingFee = value (#667)
FLYINU.Fees(uint256) (#679-681) should emit an event for:
- setFee = value (#680)
FLYINU.setLiquidityFee(uint256) (#684-686) should emit an event for:
- buyFee = value (#685)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in FLYINU.constructor() (#633-645):
External calls:
- _pair = IUniswapV2Factory(address(0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73)).createPair(address(this),address(0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c)) (#638)
State variables written after the call(s):
- _mint(owner(),1_000_000_000_000_000 * (10 ** 9)) (#644)
- _balances[account] = _balances[account].add(amount) (#534)
- _mint(owner(),1_000_000_000_000_000 * (10 ** 9)) (#644)
- _totalSupply = _totalSupply.add(amount) (#533)
- excludeFromFees(owner(),true) (#641)
- excludedAddresses[account] = excluded (#648)
- excludeFromFees(address(this),true) (#642)
- excludedAddresses[account] = excluded (#648)
- pair = _pair (#639)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in FLYINU.constructor() (#633-645):
External calls:
- _pair = IUniswapV2Factory(address(0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73)).createPair(address(this),address(0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c)) (#638)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (#535)
- _mint(owner(),1_000_000_000_000_000 * (10 ** 9)) (#644)
Apply the check-effects-interactions pattern.

Additional information: link

Context._msgData() (#230-233) is never used and should be removed
ERC20._burn(address,uint256) (#549-557) is never used and should be removed
ERC20._setupDecimals(uint8) (#587-589) is never used and should be removed
SafeMath.mod(uint256,uint256) (#134-136) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#150-153) is never used and should be removed
SafeMath.toInt256Safe(uint256) (#155-159) is never used and should be removed
SafeMathInt.abs(int256) (#213-216) is never used and should be removed
SafeMathInt.add(int256,int256) (#204-208) is never used and should be removed
SafeMathInt.div(int256,int256) (#184-190) is never used and should be removed
SafeMathInt.mul(int256,int256) (#173-179) is never used and should be removed
SafeMathInt.sub(int256,int256) (#195-199) is never used and should be removed
SafeMathInt.toUint256Safe(int256) (#219-222) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.2 (#13) allows old versions
solc-0.8.2 is not recommended for deployment
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Function FLYINU.SetTaxFeePercent(uint256) (#666-668) is not in mixedCase
Function FLYINU.Fees(uint256) (#679-681) is not in mixedCase
Variable FLYINU._maxTxAmount (#631) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#231)" inContext (#225-234)
Remove redundant statements if they congest code but offer no value.

Additional information: link

SafeMathInt.MAX_INT256 (#168) is never used in SafeMathInt (#166-223)
Remove unused state variables.

Additional information: link

FLYINU.rewardsFee (#627) should be constant
FLYINU.taxFeeVar (#628) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#282-284)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#290-293)
name() should be declared external:
- ERC20.name() (#364-366)
symbol() should be declared external:
- ERC20.symbol() (#372-374)
decimals() should be declared external:
- ERC20.decimals() (#389-391)
totalSupply() should be declared external:
- ERC20.totalSupply() (#396-398)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#403-405)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#415-418)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#423-425)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#434-437)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#452-456)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#470-473)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#489-492)
Use the external attribute for functions never called from the contract.

Additional information: link

Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.

Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.

Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

Contract has 15% buy tax and 14% sell tax.
Taxes are high (over 10%) but contract ownership is renounced.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find website, listings and other project-related information

Young tokens have high risks of scam / price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank