Jay [Jay Chou] Token

LIU.addLiquidity(uint256,uint256) (#525-538) sends eth to arbitrary user
Dangerous calls:
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in LIU._transfer(address,address,uint256) (#450-480):
External calls:
- swapForFees() (#474)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
- (success) = recipient.call{value: amount}() (#337)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#521)
- address(marketingWallet).sendValue(marketingAmt) (#506)
External calls sending eth:
- swapForFees() (#474)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
- (success) = recipient.call{value: amount}() (#337)
State variables written after the call(s):
- super._transfer(sender,recipient,amount - fee - burnAmt) (#476)
- _balances[sender] = senderBalance - amount (#246)
- _balances[recipient] += amount (#247)
- super._transfer(sender,address(this),fee) (#477)
- _balances[sender] = senderBalance - amount (#246)
- _balances[recipient] += amount (#247)
- super._transfer(sender,address(0xdead),burnAmt) (#478)
- _balances[sender] = senderBalance - amount (#246)
- _balances[recipient] += amount (#247)
Apply the check-effects-interactions pattern.

Additional information: link

LIU.rescueBEP20(address,uint256) (#571-573) ignores return value by IERC20(tokenAddress).transfer(owner(),amount) (#572)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

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Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Combination 2: Unchecked transfer + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

Contract ownership is not renounced (belongs to a wallet)

LIU.updateMarketingWallet(address).newWallet (#556) lacks a zero-check on :
- marketingWallet = newWallet (#557)
LIU.updateRouterAndPair(IRouter,address)._pair (#561) lacks a zero-check on :
- pair = _pair (#564)
Check that the address is not zero.

Additional information: link

Modifier LIU.inSwap() (#424-430) does not always execute _; or revert
All the paths in a modifier must execute _ or revert.

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LIU.swapForFees() (#482-510) performs a multiplication on the result of a division:
-unitBalance = deltaBalance / (denominator - sellTaxes.liquidity) (#496)
-bnbToAddLiquidityWith = unitBalance * sellTaxes.liquidity (#497)
LIU.swapForFees() (#482-510) performs a multiplication on the result of a division:
-unitBalance = deltaBalance / (denominator - sellTaxes.liquidity) (#496)
-marketingAmt = unitBalance * 2 * sellTaxes.marketing (#504)
Consider ordering multiplication before division.

Additional information: link

LIU.addLiquidity(uint256,uint256) (#525-538) ignores return value by router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
Ensure that all the return values of the function calls are used.

Additional information: link

LIU.setTaxes(uint256,uint256,uint256)._burn (#548) shadows:
- ERC20._burn(address,uint256) (#282-293) (function)
LIU.setSellTaxes(uint256,uint256,uint256)._burn (#552) shadows:
- ERC20._burn(address,uint256) (#282-293) (function)
Rename the local variables that shadow another component.

Additional information: link

LIU.setSwapThreshold(uint256) (#544-546) should emit an event for:
- swapThreshold = new_amount (#545)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in LIU.constructor() (#432-444):
External calls:
- _pair = IFactory(_router.factory()).createPair(address(this),_router.WETH()) (#437-438)
State variables written after the call(s):
- excludedFromFees[address(this)] = true (#442)
- excludedFromFees[marketingWallet] = true (#443)
- pair = _pair (#441)
- router = _router (#440)
Reentrancy in LIU.swapForFees() (#482-510):
External calls:
- swapTokensForBnb(toSwap) (#493)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#521)
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
External calls sending eth:
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
State variables written after the call(s):
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
- _allowances[owner][spender] = amount (#312)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in LIU._transfer(address,address,uint256) (#450-480):
External calls:
- swapForFees() (#474)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
- (success) = recipient.call{value: amount}() (#337)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#521)
- address(marketingWallet).sendValue(marketingAmt) (#506)
External calls sending eth:
- swapForFees() (#474)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
- (success) = recipient.call{value: amount}() (#337)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#249)
- super._transfer(sender,recipient,amount - fee - burnAmt) (#476)
- Transfer(sender,recipient,amount) (#249)
- super._transfer(sender,address(0xdead),burnAmt) (#478)
- Transfer(sender,recipient,amount) (#249)
- super._transfer(sender,address(this),fee) (#477)
Reentrancy in LIU.swapForFees() (#482-510):
External calls:
- swapTokensForBnb(toSwap) (#493)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#521)
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
External calls sending eth:
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#530-537)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#313)
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#501)
Apply the check-effects-interactions pattern.

Additional information: link

Context._msgData() (#14-17) is never used and should be removed
ERC20._burn(address,uint256) (#282-293) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version0.8.12 (#6) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.12 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

Low level call in Address.sendValue(address,uint256) (#334-339):
- (success) = recipient.call{value: amount}() (#337)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable ERC20._balances (#61) is not in mixedCase
Variable ERC20._allowances (#63) is not in mixedCase
Function IRouter.WETH() (#382) is not in mixedCase
Parameter LIU.setSwapThreshold(uint256).new_amount (#544) is not in mixedCase
Parameter LIU.setTaxes(uint256,uint256,uint256)._marketing (#548) is not in mixedCase
Parameter LIU.setTaxes(uint256,uint256,uint256)._liquidity (#548) is not in mixedCase
Parameter LIU.setTaxes(uint256,uint256,uint256)._burn (#548) is not in mixedCase
Parameter LIU.setSellTaxes(uint256,uint256,uint256)._marketing (#552) is not in mixedCase
Parameter LIU.setSellTaxes(uint256,uint256,uint256)._liquidity (#552) is not in mixedCase
Parameter LIU.setSellTaxes(uint256,uint256,uint256)._burn (#552) is not in mixedCase
Parameter LIU.updateRouterAndPair(IRouter,address)._router (#561) is not in mixedCase
Parameter LIU.updateRouterAndPair(IRouter,address)._pair (#561) is not in mixedCase
Parameter LIU.updateExcludedFromFees(address,bool)._address (#567) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#15)" inContext (#9-18)
Remove redundant statements if they congest code but offer no value.

Additional information: link

name() should be declared external:
- ERC20.name() (#87-89)
symbol() should be declared external:
- ERC20.symbol() (#95-97)
totalSupply() should be declared external:
- ERC20.totalSupply() (#119-121)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#138-141)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#146-148)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#157-160)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#175-183)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#197-200)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#216-222)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#360-362)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#364-367)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract has 2% buy tax and 4% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.

Token is deployed only at one blockchain

BscScan page for the token does not contain additional info: website, socials, description, etc.

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Unable to find token on CoinGecko

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Unable to find token on CoinMarketCap

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Unable to find token/project description on the website or on BscScan, CoinMarketCap

Unable to verify that token and website are owned by the same team (no listings + unable to find contract on website)

Unable to find code repository for the project

Unable to verify token contract address on the website

Unable to find whitepaper link on the website

Token is not listed at Mobula.Finance

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Unable to find token on CoinHunt

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

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

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank