Popular Tokens

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WBNB

WEYU Token

About WEYU

Listings

Age

3 years

Token 3 years

Website

weyu.io

Description

show...

white paper

WEYU is the world’s first Multi-Chain Platform designed specifically for the NFT resale market. As the tokenization of items such as collectibles, art, music, content, property, and everything in-between becomes the norm, WEYU believes that the mass adoption tipping point will come from simple-to-use platforms that cater to the average internet user.

Social

Contract

0xfafd4cb703b25cb22f43d017e7e0d75febc26743

Laser Scorebeta Last Audit: 30 November 2021

report

Token is either risky or in presale. For presale 30+ is a fine score.

Anti-Scam

Links

Code

Contract

32%

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

WeyuToken.addLiquidity(uint256,uint256) (contracts/WeyuToken.sol#1100-1113) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in WeyuToken._transfer(address,address,uint256) (contracts/WeyuToken.sol#1013-1057):
External calls:
- swapAndLiquify(contractTokenBalance) (contracts/WeyuToken.sol#1044)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/WeyuToken.sol#1091-1097)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (contracts/WeyuToken.sol#1044)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (contracts/WeyuToken.sol#1056)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (contracts/WeyuToken.sol#969)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/WeyuToken.sol#1138)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/WeyuToken.sol#1147)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/WeyuToken.sol#881)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/WeyuToken.sol#1158)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/WeyuToken.sol#1139)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/WeyuToken.sol#1149)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/WeyuToken.sol#1159)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/WeyuToken.sol#883)
- _tokenTransfer(from,to,amount,takeFee) (contracts/WeyuToken.sol#1056)
- _rTotal = _rTotal.sub(rFee) (contracts/WeyuToken.sol#924)
- _tokenTransfer(from,to,amount,takeFee) (contracts/WeyuToken.sol#1056)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (contracts/WeyuToken.sol#971)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (contracts/WeyuToken.sol#1157)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (contracts/WeyuToken.sol#880)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (contracts/WeyuToken.sol#1148)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (contracts/WeyuToken.sol#882)
Apply the check-effects-interactions pattern.

Additional information: link

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.

WeyuToken.addLiquidity(uint256,uint256) (contracts/WeyuToken.sol#1100-1113) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
Ensure that all the return values of the function calls are used.

Additional information: link

WeyuToken._approve(address,address,uint256).owner (contracts/WeyuToken.sol#1005) shadows:
- Ownable.owner() (contracts/WeyuToken.sol#434-436) (function)
Rename the local variables that shadow another component.

Additional information: link

WeyuToken.setMaxTxPercent(uint256) (contracts/WeyuToken.sol#909-913) should emit an event for:
- _maxTxAmount = _tTotal.mul(maxTxPercent).div(10 ** 2) (contracts/WeyuToken.sol#910-912)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in WeyuToken.transferFrom(address,address,uint256) (contracts/WeyuToken.sol#806-810):
External calls:
- _transfer(sender,recipient,amount) (contracts/WeyuToken.sol#807)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/WeyuToken.sol#1091-1097)
External calls sending eth:
- _transfer(sender,recipient,amount) (contracts/WeyuToken.sol#807)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (contracts/WeyuToken.sol#808)
- _allowances[owner][spender] = amount (contracts/WeyuToken.sol#1009)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in WeyuToken.transferFrom(address,address,uint256) (contracts/WeyuToken.sol#806-810):
External calls:
- _transfer(sender,recipient,amount) (contracts/WeyuToken.sol#807)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/WeyuToken.sol#1091-1097)
External calls sending eth:
- _transfer(sender,recipient,amount) (contracts/WeyuToken.sol#807)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (contracts/WeyuToken.sol#1105-1112)
Event emitted after the call(s):
- Approval(owner,spender,amount) (contracts/WeyuToken.sol#1010)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (contracts/WeyuToken.sol#808)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (contracts/WeyuToken.sol#480-485) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (contracts/WeyuToken.sol#482)
Avoid relying on block.timestamp.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (contracts/WeyuToken.sol#379-400) uses assembly
- INLINE ASM (contracts/WeyuToken.sol#392-395)
Do not use evm assembly.

Additional information: link

SafeMath.mod(uint256,uint256,string) (contracts/WeyuToken.sol#247-250) is never used and should be removed
Remove unused functions.

Additional information: link

WeyuToken._previousLiquidityFee (contracts/WeyuToken.sol#728) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (contracts/WeyuToken.sol#379-400):
- (success,returndata) = target.call{value: weiValue}(data) (contracts/WeyuToken.sol#383)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable WeyuToken._maxTxAmount (contracts/WeyuToken.sol#736) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (contracts/WeyuToken.sol#259)" inContext (contracts/WeyuToken.sol#253-262)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable WeyuToken._getValues(uint256).rTransferAmount (contracts/WeyuToken.sol#930) is too similar to WeyuToken._transferStandard(address,address,uint256).tTransferAmount (contracts/WeyuToken.sol#1137)
Prevent variables from having similar names.

Additional information: link

WeyuToken.slitherConstructorVariables() (contracts/WeyuToken.sol#702-1164) uses literals with too many digits:
- numTokensSellToAddToLiquidity = 2500000 * 10 ** 18 (contracts/WeyuToken.sol#737)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

WeyuToken._tTotal (contracts/WeyuToken.sol#716) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

isExcludedFromFee(address) should be declared external:
- WeyuToken.isExcludedFromFee(address) (contracts/WeyuToken.sol#1001-1003)
Use the external attribute for functions never called from the contract.

Additional information: link

Trading

80%

Holders:

Token is deployed only at one blockchain

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute number of swaps.

Socials

30%

Twitter account link seems to be invalid

Unable to find Youtube account

Unable to find Discord account

Transparency

49%

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

Additional information: link

Unable to find token contract audit

Unable to verify token contract address on the website

Unable to find audit link on the website

Unable to find whitepaper link on the website

Unable to find Telegram link on the website

Unable to find Twitter link on the website

Unable to find token on CoinHunt

Additional information: link

Unable to find code repository for the project

Age

45%

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

Young tokens have high risks of price dump / death

Token has relatively low CoinGecko rank

Popular Tokens

WEYU Token

About WEYU

Listings

Age

Website

Description

Social

Contract

Laser Scorebeta Last Audit: 30 November 2021

Anti-Scam

Links

Contract

[LSR] Audit is not found critical

[Slither] Functions that send Ether to arbitrary destinations critical

[Slither] Reentrancy vulnerabilities critical

[LSR] Dangerous combinations (1) major

[Slither] Unused return minor

[Slither] Local variable shadowing minor

[Slither] Missing events arithmetic minor

[Slither] Reentrancy vulnerabilities minor

[Slither] Reentrancy vulnerabilities minor

[Slither] Block timestamp minor

[Slither] Assembly usage minor

[Slither] Dead-code minor

[Slither] Function Initializing State minor

[Slither] Low-level calls minor

[Slither] Conformance to Solidity naming conventions minor

[Slither] Redundant Statements minor

[Slither] Variable names too similar minor

[Slither] Too many digits minor

[Slither] State variables that could be declared constant minor

[Slither] Public function that could be declared external minor

Trading

[LSR] Few chains major

[LSR] Unknown liquidity minor

[LSR] Unknown swaps minor

Socials

[LSR] Twitter is invalid critical

[LSR] Youtube is not found minor

[LSR] Discord is not found minor

Transparency

[LSR] No BscScan listing critical

[LSR] Audit is not found major

[LSR] Website: contract is not found minor

[LSR] Website: audit is not found minor

[LSR] Website: whitepaper is not found minor

[LSR] Website: telegram is not found minor

[LSR] Website: twitter is not found minor

[LSR] No CoinHunt listing minor

[LSR] Code repo is not found minor

Age

[LSR] CoinGecko age <= 90 days major

[LSR] Domain age <= 90 days major

[LSR] Token age <= 360 days minor

[LSR] Low CoinGecko rank minor

Price for WEYU