VCG [Verse Casino Games] Token

BasicToken.sendBNB(address,uint256) (#575-580) sends eth to arbitrary user
Dangerous calls:
- (success) = recipient.call{value: amount}() (#578)
BasicToken.swapAndLiquify(uint256) (#729-758) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in BasicToken._transfer(address,address,uint256) (#642-726):
External calls:
- swapAndLiquify(liquidityTokens) (#689)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#739-744)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
- swapAndSendMarketing(marketingTokens) (#694)
- (success) = recipient.call{value: amount}() (#578)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#767-772)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#689)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
- swapAndSendMarketing(marketingTokens) (#694)
- (success) = recipient.call{value: amount}() (#578)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (#721)
- _balances[sender] = senderBalance - amount (#167)
- _balances[recipient] += amount (#169)
- super._transfer(from,to,amount) (#724)
- _balances[sender] = senderBalance - amount (#167)
- _balances[recipient] += amount (#169)
- swapping = false (#697)
Apply the check-effects-interactions pattern.

Additional information: link

BasicToken.claimStuckTokens(address) (#560-569) ignores return value by ERC20token.transfer(msg.sender,balance) (#568)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

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.

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)

BasicToken.swapAndLiquify(uint256) (#729-758) ignores return value by uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
Ensure that all the return values of the function calls are used.

Additional information: link

BasicToken.setSwapTokensAtAmount(uint256) (#781-784) should emit an event for:
- swapTokensAtAmount = newAmount (#783)
Emit an event for critical parameter changes.

Additional information: link

BasicToken.constructor(BasicToken.ConstructorArgument)._uniswapV2Pair (#525-526) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#529)
BasicToken.updateUniswapV2Router(address)._uniswapV2Pair (#586-587) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#588)
Check that the address is not zero.

Additional information: link

Reentrancy in BasicToken.constructor(BasicToken.ConstructorArgument) (#501-554):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#525-526)
State variables written after the call(s):
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#531)
- _allowances[owner][spender] = amount (#213)
- _mint(owner(),_arg.totalSupply_ * (10 ** 18)) (#550)
- _balances[account] += amount (#182)
- _isExcludedFromFees[owner()] = true (#545)
- _isExcludedFromFees[DEAD] = true (#546)
- _isExcludedFromFees[address(this)] = true (#547)
- _isExcludedFromMaxTxLimit[owner()] = true (#535)
- _isExcludedFromMaxTxLimit[address(0)] = true (#536)
- _isExcludedFromMaxTxLimit[address(this)] = true (#537)
- _isExcludedFromMaxTxLimit[DEAD] = true (#538)
- _isExcludedFromMaxWalletLimit[owner()] = true (#540)
- _isExcludedFromMaxWalletLimit[address(0)] = true (#541)
- _isExcludedFromMaxWalletLimit[address(this)] = true (#542)
- _isExcludedFromMaxWalletLimit[DEAD] = true (#543)
- _mint(owner(),_arg.totalSupply_ * (10 ** 18)) (#550)
- _totalSupply += amount (#181)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#533)
- automatedMarketMakerPairs[pair] = value (#599)
- swapTokensAtAmount = _arg.totalSupply_ * (10 ** 18) / 5000 (#549)
- uniswapV2Pair = _uniswapV2Pair (#529)
- uniswapV2Router = _uniswapV2Router (#528)
Reentrancy in BasicToken.updateUniswapV2Router(address) (#582-589):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#586-587)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#588)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in BasicToken._transfer(address,address,uint256) (#642-726):
External calls:
- swapAndLiquify(liquidityTokens) (#689)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#739-744)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
- swapAndSendMarketing(marketingTokens) (#694)
- (success) = recipient.call{value: amount}() (#578)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#767-772)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#689)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
- swapAndSendMarketing(marketingTokens) (#694)
- (success) = recipient.call{value: amount}() (#578)
Event emitted after the call(s):
- SwapAndSendMarketing(tokenAmount,newBalance) (#778)
- swapAndSendMarketing(marketingTokens) (#694)
- Transfer(sender,recipient,amount) (#171)
- super._transfer(from,to,amount) (#724)
- Transfer(sender,recipient,amount) (#171)
- super._transfer(from,address(this),fees) (#721)
Reentrancy in BasicToken.constructor(BasicToken.ConstructorArgument) (#501-554):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#525-526)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#214)
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#531)
- SetAutomatedMarketMakerPair(pair,value) (#601)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#533)
- Transfer(address(0),account,amount) (#183)
- _mint(owner(),_arg.totalSupply_ * (10 ** 18)) (#550)
Reentrancy in BasicToken.constructor(BasicToken.ConstructorArgument) (#501-554):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#525-526)
External calls sending eth:
- address(_arg.serviceFeeReceiver_).transfer(_arg.serviceFee_) (#552)
Event emitted after the call(s):
- TokenCreated(owner(),address(this),TokenClass.basicToken,2) (#553)
Reentrancy in BasicToken.swapAndLiquify(uint256) (#729-758):
External calls:
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#739-744)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
External calls sending eth:
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#748-755)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#757)
Reentrancy in BasicToken.swapAndSendMarketing(uint256) (#760-779):
External calls:
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#767-772)
- sendBNB(address(marketingWallet),newBalance) (#776)
- (success) = recipient.call{value: amount}() (#578)
External calls sending eth:
- sendBNB(address(marketingWallet),newBalance) (#776)
- (success) = recipient.call{value: amount}() (#578)
Event emitted after the call(s):
- SwapAndSendMarketing(tokenAmount,newBalance) (#778)
Apply the check-effects-interactions pattern.

Additional information: link

BasicToken.excludeFromFees(address) (#605-610) compares to a boolean constant:
-require(bool,string)(_isExcludedFromFees[account] != true,Account is already excluded) (#606)
BasicToken._transfer(address,address,uint256) (#642-726) compares to a boolean constant:
-_isExcludedFromMaxTxLimit[from] == false && _isExcludedFromMaxTxLimit[to] == false (#666-667)
BasicToken._transfer(address,address,uint256) (#642-726) compares to a boolean constant:
-_isExcludedFromMaxWalletLimit[from] == false && _isExcludedFromMaxWalletLimit[to] == false && to != uniswapV2Pair (#656-658)
Remove the equality to the boolean constant.

Additional information: link

Context._msgData() (#34-37) is never used and should be removed
ERC20._burn(address,uint256) (#188-203) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version0.8.15 (#5) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.15 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 BasicToken.sendBNB(address,uint256) (#575-580):
- (success) = recipient.call{value: amount}() (#578)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#258) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#259) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#276) is not in mixedCase
Function IUniswapV2Router01.WETH() (#296) is not in mixedCase
Parameter BasicToken.updateFees(uint256,uint256)._buyFee (#616) is not in mixedCase
Parameter BasicToken.updateFees(uint256,uint256)._sellFee (#616) is not in mixedCase
Parameter BasicToken.updateFeeShares(uint256,uint256)._marketingFeeShare (#623) is not in mixedCase
Parameter BasicToken.updateFeeShares(uint256,uint256)._liquidityFeeShare (#623) is not in mixedCase
Parameter BasicToken.changeMarketingWallet(address)._marketingWallet (#635) is not in mixedCase
Function BasicToken.setMaxWalletRate_Denominator1000(uint256) (#811-815) is not in mixedCase
Parameter BasicToken.setMaxWalletRate_Denominator1000(uint256)._val (#811) is not in mixedCase
Function BasicToken.setMaxTransactionRates_Denominator1000(uint256,uint256) (#853-858) is not in mixedCase
Parameter BasicToken.setMaxTransactionRates_Denominator1000(uint256,uint256)._maxTransactionRateBuy (#853) is not in mixedCase
Parameter BasicToken.setMaxTransactionRates_Denominator1000(uint256,uint256)._maxTransactionRateSell (#853) is not in mixedCase
Variable BasicToken.DEAD (#458) is not in mixedCase
Modifier BasicToken._maxWalletAvailable() (#792-795) is not in mixedCase
Modifier BasicToken._maxTransactionAvailable() (#830-833) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#35)" inContext (#29-38)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in BasicToken.constructor(BasicToken.ConstructorArgument) (#501-554):
External calls:
- address(_arg.serviceFeeReceiver_).transfer(_arg.serviceFee_) (#552)
Event emitted after the call(s):
- TokenCreated(owner(),address(this),TokenClass.basicToken,2) (#553)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#301) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#302)
Prevent variables from having similar names.

Additional information: link

BasicToken.setSwapTokensAtAmount(uint256) (#781-784) uses literals with too many digits:
- require(bool,string)(newAmount > totalSupply() / 100000,SwapTokensAtAmount must be greater than 0.001% of total supply) (#782)
BasicToken.slitherConstructorVariables() (#445-866) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#458)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

BasicToken.DEAD (#458) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#60-63)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#65-69)
name() should be declared external:
- ERC20.name() (#87-89)
symbol() should be declared external:
- ERC20.symbol() (#91-93)
decimals() should be declared external:
- ERC20.decimals() (#95-97)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#107-110)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#112-114)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#116-119)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#121-137)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#139-142)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#144-152)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- BasicToken.setAutomatedMarketMakerPair(address,bool) (#591-595)
isExcludedFromFees(address) should be declared external:
- BasicToken.isExcludedFromFees(address) (#612-614)
isExcludedFromMaxWalletLimit(address) should be declared external:
- BasicToken.isExcludedFromMaxWalletLimit(address) (#803-805)
isExcludedFromMaxTransaction(address) should be declared external:
- BasicToken.isExcludedFromMaxTransaction(address) (#841-843)
Use the external attribute for functions never called from the contract.

Additional information: link

Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.

Not a direct threat, but may indicate unreliable intentions of developer. Both name and ticker of current token are widespread, i.e. common across multiple tokens. This is slightly suspicious

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.

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

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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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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death