SWC [Shiba Inu World Cup] Token

ShibaInuWorldCup.contractSwap(uint256) (#533-565) sends eth to arbitrary user
Dangerous calls:
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
ShibaInuWorldCup.buyBack(uint256) (#567-578) sends eth to arbitrary user
Dangerous calls:
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in ShibaInuWorldCup._transfer(address,address,uint256) (#483-531):
External calls:
- contractSwap(contractTokenBalance) (#514)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(contractTokenBalance,0,path,address(this),block.timestamp) (#549-555)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
- buyBack(buybackAmount) (#522)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- buyBack(balance) (#524)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
External calls sending eth:
- contractSwap(contractTokenBalance) (#514)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
- buyBack(buybackAmount) (#522)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- buyBack(balance) (#524)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
State variables written after the call(s):
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- _liquidityHolders[from] = true (#583)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- _rOwned[from] -= values.rAmount (#693)
- _rOwned[to] += values.rTransferAmount (#694)
- _rOwned[address(this)] += values.tSwap * values.currentRate (#747)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- _rTotal -= values.rFee (#704)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- _tOwned[from] = _tOwned[from] - tAmount (#697)
- _tOwned[to] = _tOwned[to] + values.tTransferAmount (#700)
- _tOwned[address(this)] += values.tSwap (#749)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- antiSnipe = AntiSnipe(address(this)) (#587)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- contractSwapEnabled = true (#589)
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.

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

Contract ownership is not renounced (belongs to a wallet)

ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756) performs a multiplication on the result of a division:
-feeAmount = (tAmount * currentFee) / masterTaxDivisor (#735)
-values.tFee = (feeAmount * ratios.reflection) / total (#737)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in ShibaInuWorldCup.enableTrading() (#594-605):
External calls:
- antiSnipe.setLaunch(lpPair,uint32(block.number),uint64(block.timestamp),_decimals) (#600)
State variables written after the call(s):
- tradingEnabled = true (#601)
Reentrancy in ShibaInuWorldCup.finalizeTransfer(address,address,uint256,bool,bool,bool) (#678-709):
External calls:
- values = takeTaxes(from,to,tAmount,takeFee,buy,sell,other) (#691)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
State variables written after the call(s):
- _rOwned[from] -= values.rAmount (#693)
- _rOwned[to] += values.rTransferAmount (#694)
- _rTotal -= values.rFee (#704)
- _tOwned[from] = _tOwned[from] - tAmount (#697)
- _tOwned[to] = _tOwned[to] + values.tTransferAmount (#700)
Reentrancy in ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756):
External calls:
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
State variables written after the call(s):
- _rOwned[address(this)] += values.tSwap * values.currentRate (#747)
- _tOwned[address(this)] += values.tSwap (#749)
Reentrancy in ShibaInuWorldCup.transferOwner(address) (#247-261):
External calls:
- finalizeTransfer(_owner,newOwner,balanceOf(_owner),false,false,true) (#254)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
State variables written after the call(s):
- _owner = newOwner (#258)
Apply the check-effects-interactions pattern.

Additional information: link

ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool).check (#719) is a local variable never initialized
ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool).values (#712) is a local variable never initialized
ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool).checked (#718) 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

ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756) ignores return value by antiSnipe.checkUser(from,to,tAmount) (#719-720)
Ensure that all the return values of the function calls are used.

Additional information: link

ShibaInuWorldCup.setSwapSettings(uint256,uint256,uint256,uint256) (#423-428) should emit an event for:
- swapThreshold = (_tTotal * thresholdPercent) / thresholdDivisor (#424)
- swapAmount = (_tTotal * amountPercent) / amountDivisor (#425)
ShibaInuWorldCup.setPriceImpactSwapAmount(uint256) (#430-433) should emit an event for:
- piSwapPercent = priceImpactSwapPercent (#432)
ShibaInuWorldCup.setBuybackSettings(uint256,uint256,uint256,uint256) (#445-448) should emit an event for:
- buybackThreshold = threshold * 10 ** thresholdMultiplier (#446)
- buybackAmount = amount * 10 ** amountMultiplier (#447)
Emit an event for critical parameter changes.

Additional information: link

ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756) has external calls inside a loop: antiSnipe.checkUser(from,to,tAmount) (#719-720)
Favor pull over push strategy for external calls.

Additional information: link

Variable 'ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool).check (#719)' in ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756) potentially used before declaration: checked = check (#720)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in ShibaInuWorldCup.constructor() (#206-238):
External calls:
- lpPair = IFactoryV2(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#228)
State variables written after the call(s):
- _approve(_owner,address(dexRouter),type()(uint256).max) (#231)
- _allowances[sender][spender] = amount (#299)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#232)
- _allowances[sender][spender] = amount (#299)
- _isExcludedFromFees[_owner] = true (#234)
- _isExcludedFromFees[address(this)] = true (#235)
- _isExcludedFromFees[DEAD] = true (#236)
- _liquidityHolders[_owner] = true (#237)
- lpPairs[lpPair] = true (#229)
Reentrancy in ShibaInuWorldCup.enableTrading() (#594-605):
External calls:
- antiSnipe.setLaunch(lpPair,uint32(block.number),uint64(block.timestamp),_decimals) (#600)
State variables written after the call(s):
- allowedPresaleExclusion = false (#602)
- swapAmount = (balanceOf(lpPair) * 30) / 10000 (#604)
- swapThreshold = (balanceOf(lpPair) * 10) / 10000 (#603)
Reentrancy in ShibaInuWorldCup.setNewRouter(address) (#316-328):
External calls:
- lpPair = IFactoryV2(_newRouter.factory()).createPair(address(this),_newRouter.WETH()) (#321)
State variables written after the call(s):
- _approve(address(this),address(dexRouter),type()(uint256).max) (#327)
- _allowances[sender][spender] = amount (#299)
- dexRouter = _newRouter (#326)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in ShibaInuWorldCup._transfer(address,address,uint256) (#483-531):
External calls:
- contractSwap(contractTokenBalance) (#514)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(contractTokenBalance,0,path,address(this),block.timestamp) (#549-555)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
- buyBack(buybackAmount) (#522)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- buyBack(balance) (#524)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
External calls sending eth:
- contractSwap(contractTokenBalance) (#514)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
- buyBack(buybackAmount) (#522)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
- buyBack(balance) (#524)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,DEAD,block.timestamp) (#572-577)
Event emitted after the call(s):
- ContractSwapEnabledUpdated(true) (#590)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- Transfer(from,to,values.tTransferAmount) (#707)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
- Transfer(from,address(this),values.tSwap) (#751)
- finalizeTransfer(from,to,amount,buy,sell,other) (#530)
Reentrancy in ShibaInuWorldCup.constructor() (#206-238):
External calls:
- lpPair = IFactoryV2(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#228)
Event emitted after the call(s):
- Approval(sender,spender,amount) (#300)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#232)
- Approval(sender,spender,amount) (#300)
- _approve(_owner,address(dexRouter),type()(uint256).max) (#231)
Reentrancy in ShibaInuWorldCup.finalizeTransfer(address,address,uint256,bool,bool,bool) (#678-709):
External calls:
- values = takeTaxes(from,to,tAmount,takeFee,buy,sell,other) (#691)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
Event emitted after the call(s):
- Transfer(from,to,values.tTransferAmount) (#707)
Reentrancy in ShibaInuWorldCup.setNewRouter(address) (#316-328):
External calls:
- lpPair = IFactoryV2(_newRouter.factory()).createPair(address(this),_newRouter.WETH()) (#321)
Event emitted after the call(s):
- Approval(sender,spender,amount) (#300)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#327)
Reentrancy in ShibaInuWorldCup.takeTaxes(address,address,uint256,bool,bool,bool,bool) (#711-756):
External calls:
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
Event emitted after the call(s):
- Transfer(from,address(this),values.tSwap) (#751)
Reentrancy in ShibaInuWorldCup.transferOwner(address) (#247-261):
External calls:
- finalizeTransfer(_owner,newOwner,balanceOf(_owner),false,false,true) (#254)
- antiSnipe.checkUser(from,to,tAmount) (#719-720)
Event emitted after the call(s):
- OwnershipTransferred(oldOwner,newOwner) (#259)
Apply the check-effects-interactions pattern.

Additional information: link

ShibaInuWorldCup.setLpPair(address,bool) (#330-342) uses timestamp for comparisons
Dangerous comparisons:
- timeSinceLastPair != 0 (#335)
- require(bool,string)(block.timestamp - timeSinceLastPair > 259200,3 Day cooldown.!) (#336)
Avoid relying on block.timestamp.

Additional information: link

ShibaInuWorldCup._checkLiquidityAdd(address,address) (#580-592) has costly operations inside a loop:
- _hasLiqBeenAdded = true (#585)
ShibaInuWorldCup._checkLiquidityAdd(address,address) (#580-592) has costly operations inside a loop:
- antiSnipe = AntiSnipe(address(this)) (#587)
ShibaInuWorldCup._checkLiquidityAdd(address,address) (#580-592) has costly operations inside a loop:
- contractSwapEnabled = true (#589)
ShibaInuWorldCup.finalizeTransfer(address,address,uint256,bool,bool,bool) (#678-709) has costly operations inside a loop:
- _rTotal -= values.rFee (#704)
ShibaInuWorldCup.setExcludedFromReward(address,bool) (#624-658) has costly operations inside a loop:
- _excluded.pop() (#652)
Use a local variable to hold the loop computation result.

Additional information: link

Pragma version>=0.6.0<0.9.0 (#2) is too complex
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 ShibaInuWorldCup.contractSwap(uint256) (#533-565):
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#563)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IRouter01.WETH() (#33) is not in mixedCase
Parameter ShibaInuWorldCup.setProtectionSettings(bool,bool)._antiSnipe (#391) is not in mixedCase
Parameter ShibaInuWorldCup.setProtectionSettings(bool,bool)._antiBlock (#391) is not in mixedCase
Constant ShibaInuWorldCup.startingSupply (#121) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup._name (#123) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup._symbol (#124) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup._decimals (#125) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup._tTotal (#127) is not in UPPER_CASE_WITH_UNDERSCORES
Variable ShibaInuWorldCup._taxRates (#145-149) is not in mixedCase
Variable ShibaInuWorldCup._ratios (#151-156) is not in mixedCase
Constant ShibaInuWorldCup.maxBuyTaxes (#158) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup.maxSellTaxes (#159) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup.maxTransferTaxes (#160) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup.maxRoundtripTax (#161) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ShibaInuWorldCup.masterTaxDivisor (#162) is not in UPPER_CASE_WITH_UNDERSCORES
Variable ShibaInuWorldCup._taxWallets (#172-174) is not in mixedCase
Variable ShibaInuWorldCup._hasLiqBeenAdded (#184) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#45) is too similar to IRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#46)
Prevent variables from having similar names.

Additional information: link

ShibaInuWorldCup.slitherConstructorConstantVariables() (#101-786) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#166)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

transfer(address,uint256) should be declared external:
- ShibaInuWorldCup.transfer(address,uint256) (#285-288)
getCirculatingSupply() should be declared external:
- ShibaInuWorldCup.getCirculatingSupply() (#374-376)
enableTrading() should be declared external:
- ShibaInuWorldCup.enableTrading() (#594-605)
isExcludedFromReward(address) should be declared external:
- ShibaInuWorldCup.isExcludedFromReward(address) (#620-622)
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.

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.

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

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