VCT [VidCrypto] Token

VidCrypto.contractSwap(uint256) (#640-690) sends eth to arbitrary user
Dangerous calls:
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

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

Reentrancy in VidCrypto._transfer(address,address,uint256) (#551-638):
External calls:
- contractSwap(contractTokenBalance) (#613)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(swapAmt,0,path,address(this),block.timestamp) (#659-665)
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: buybackAmount}(0,path,DEAD,block.timestamp) (#625-631)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- antiSnipe.checkUser(from,to,amount) (#741-745)
External calls sending eth:
- contractSwap(contractTokenBalance) (#613)
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: buybackAmount}(0,path,DEAD,block.timestamp) (#625-631)
State variables written after the call(s):
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- _liquidityHolders[from] = true (#695)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- _tOwned[address(this)] += feeAmount (#772)
- _tOwned[from] -= amount (#752)
- _tOwned[to] += amountReceived (#754)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- contractSwapEnabled = true (#700)
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.

Contract ownership is not renounced (belongs to a wallet)

VidCrypto.contractSwap(uint256) (#640-690) ignores return value by dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool) (#731-758) ignores return value by antiSnipe.checkUser(from,to,amount) (#741-745)
Ensure that all the return values of the function calls are used.

Additional information: link

VidCrypto.setMaxTxPercent(uint256,uint256) (#451-454) should emit an event for:
- _maxTxAmount = (_tTotal * percent) / divisor (#453)
VidCrypto.setMaxWalletSize(uint256,uint256) (#456-459) should emit an event for:
- _maxWalletSize = (_tTotal * percent) / divisor (#458)
VidCrypto.setSwapSettings(uint256,uint256,uint256,uint256) (#469-473) should emit an event for:
- swapThreshold = (_tTotal * thresholdPercent) / thresholdDivisor (#470)
- swapAmount = (_tTotal * amountPercent) / amountDivisor (#471)
VidCrypto.setPriceImpactSwapAmount(uint256) (#475-478) should emit an event for:
- piSwapPercent = priceImpactSwapPercent (#477)
VidCrypto.setBuybackSettings(uint256,uint256,uint256,uint256) (#490-493) should emit an event for:
- buybackThreshold = thresholdValue * 10 ** thresholdMultiplier (#491)
- buybackAmount = amountValue * 10 ** amountMultiplier (#492)
VidCrypto.setDailySellPercent(uint256) (#499-502) should emit an event for:
- dailySellPercent = percentInHundreds (#501)
VidCrypto.setDailySellCooldown(uint256) (#504-507) should emit an event for:
- dailySellCooldown = timeInSeconds (#506)
Emit an event for critical parameter changes.

Additional information: link

VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool) (#731-758) has external calls inside a loop: antiSnipe.checkUser(from,to,amount) (#741-745)
Favor pull over push strategy for external calls.

Additional information: link

Variable 'VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool).check (#741)' in VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool) (#731-758) potentially used before declaration: checked = check (#742)
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 VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool) (#731-758):
External calls:
- antiSnipe.checkUser(from,to,amount) (#741-745)
State variables written after the call(s):
- _tOwned[from] -= amount (#752)
- _tOwned[to] += amountReceived (#754)
- amountReceived = takeTaxes(from,buy,sell,amount) (#753)
- _tOwned[address(this)] += feeAmount (#772)
Reentrancy in VidCrypto.constructor() (#247-277):
External calls:
- lpPair = IFactoryV2(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#267)
State variables written after the call(s):
- _approve(_owner,address(dexRouter),type()(uint256).max) (#270)
- _allowances[sender][spender] = amount (#337)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#271)
- _allowances[sender][spender] = amount (#337)
- _isExcludedFromFees[_owner] = true (#273)
- _isExcludedFromFees[address(this)] = true (#274)
- _isExcludedFromFees[DEAD] = true (#275)
- _liquidityHolders[_owner] = true (#276)
- lpPairs[lpPair] = true (#268)
Reentrancy in VidCrypto.enableTrading() (#705-716):
External calls:
- antiSnipe.setLaunch(lpPair,uint32(block.number),uint64(block.timestamp),_decimals) (#711)
State variables written after the call(s):
- allowedPresaleExclusion = false (#713)
- swapAmount = (balanceOf(lpPair) * 25) / 10000 (#715)
- swapThreshold = (balanceOf(lpPair) * 10) / 10000 (#714)
Reentrancy in VidCrypto.setNewRouter(address) (#354-365):
External calls:
- lpPair = IFactoryV2(_newRouter.factory()).createPair(address(this),_newRouter.WETH()) (#358)
State variables written after the call(s):
- _approve(address(this),address(dexRouter),type()(uint256).max) (#364)
- _allowances[sender][spender] = amount (#337)
- dexRouter = _newRouter (#363)
Apply the check-effects-interactions pattern.

Additional information: link

VidCrypto.setLpPair(address,bool) (#367-379) uses timestamp for comparisons
Dangerous comparisons:
- timeSinceLastPair != 0 (#372)
- require(bool,string)(block.timestamp - timeSinceLastPair > 259200,3 Day cooldown.!) (#373)
VidCrypto.getSecondsToNextSellReset(address) (#514-521) uses timestamp for comparisons
Dangerous comparisons:
- time > block.timestamp (#516)
VidCrypto._transfer(address,address,uint256) (#551-638) uses timestamp for comparisons
Dangerous comparisons:
- user[from].sellStamp + dailySellCooldown > block.timestamp (#577)
Avoid relying on block.timestamp.

Additional information: link

VidCrypto.setLpPair(address,bool) (#367-379) compares to a boolean constant:
-enabled == false (#368)
Remove the equality to the boolean constant.

Additional information: link

VidCrypto._checkLiquidityAdd(address,address) (#692-703) has costly operations inside a loop:
- _hasLiqBeenAdded = true (#696)
VidCrypto._checkLiquidityAdd(address,address) (#692-703) has costly operations inside a loop:
- antiSnipe = AntiSnipe(address(this)) (#698)
VidCrypto._checkLiquidityAdd(address,address) (#692-703) has costly operations inside a loop:
- contractSwapEnabled = true (#700)
Use a local variable to hold the loop computation result.

Additional information: link

Pragma version>=0.6.0<0.9.0 (#6) is too complex
solc-0.8.13 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 VidCrypto.contractSwap(uint256) (#640-690):
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
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() (#65) is not in mixedCase
Parameter VidCrypto.setProtectionSettings(bool,bool)._antiSnipe (#423) is not in mixedCase
Parameter VidCrypto.setProtectionSettings(bool,bool)._antiBlock (#423) is not in mixedCase
Constant VidCrypto.startingSupply (#150) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto._name (#152) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto._symbol (#153) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto._decimals (#154) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto._tTotal (#156) is not in UPPER_CASE_WITH_UNDERSCORES
Variable VidCrypto._taxRates (#171-175) is not in mixedCase
Variable VidCrypto._ratios (#177-182) is not in mixedCase
Constant VidCrypto.maxBuyTaxes (#184) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto.maxSellTaxes (#185) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto.maxTransferTaxes (#186) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto.maxRoundtripFee (#187) is not in UPPER_CASE_WITH_UNDERSCORES
Constant VidCrypto.masterTaxDivisor (#188) is not in UPPER_CASE_WITH_UNDERSCORES
Variable VidCrypto._taxWallets (#198-200) is not in mixedCase
Variable VidCrypto._hasLiqBeenAdded (#213) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#77) is too similar to IRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#78)
Prevent variables from having similar names.

Additional information: link

VidCrypto.slitherConstructorConstantVariables() (#133-778) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#192)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

transfer(address,uint256) should be declared external:
- VidCrypto.transfer(address,uint256) (#323-326)
approve(address,uint256) should be declared external:
- VidCrypto.approve(address,uint256) (#328-331)
approveContractContingency() should be declared external:
- VidCrypto.approveContractContingency() (#341-344)
setNewRouter(address) should be declared external:
- VidCrypto.setNewRouter(address) (#354-365)
isBlacklisted(address) should be declared external:
- VidCrypto.isBlacklisted(address) (#415-417)
getMaxTX() should be declared external:
- VidCrypto.getMaxTX() (#461-463)
getMaxWallet() should be declared external:
- VidCrypto.getMaxWallet() (#465-467)
enableTrading() should be declared external:
- VidCrypto.enableTrading() (#705-716)
Use the external attribute for functions never called from the contract.

Additional information: link

VidCrypto.contractSwap(uint256) (#640-690) performs a multiplication on the result of a division:
-toLiquify = ((contractTokenBalance * ratios.liquidity) / ratios.totalSwap) / 2 (#650)
-liquidityBalance = (amtBalance * toLiquify) / swapAmt (#668)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in VidCrypto.enableTrading() (#705-716):
External calls:
- antiSnipe.setLaunch(lpPair,uint32(block.number),uint64(block.timestamp),_decimals) (#711)
State variables written after the call(s):
- tradingEnabled = true (#712)
Reentrancy in VidCrypto.transferOwner(address) (#286-300):
External calls:
- _finalizeTransfer(_owner,newOwner,balanceOf(_owner),false,false,false,true) (#293)
- antiSnipe.checkUser(from,to,amount) (#741-745)
State variables written after the call(s):
- _owner = newOwner (#297)
Apply the check-effects-interactions pattern.

Additional information: link

VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool).check (#741) is a local variable never initialized
VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool).checked (#740) 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

Reentrancy in VidCrypto._finalizeTransfer(address,address,uint256,bool,bool,bool,bool) (#731-758):
External calls:
- antiSnipe.checkUser(from,to,amount) (#741-745)
Event emitted after the call(s):
- Transfer(from,address(this),feeAmount) (#773)
- amountReceived = takeTaxes(from,buy,sell,amount) (#753)
- Transfer(from,to,amountReceived) (#756)
Reentrancy in VidCrypto._transfer(address,address,uint256) (#551-638):
External calls:
- contractSwap(contractTokenBalance) (#613)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(swapAmt,0,path,address(this),block.timestamp) (#659-665)
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: buybackAmount}(0,path,DEAD,block.timestamp) (#625-631)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- antiSnipe.checkUser(from,to,amount) (#741-745)
External calls sending eth:
- contractSwap(contractTokenBalance) (#613)
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
- (success,None) = _taxWallets.marketing.call{gas: 35000,value: marketingBalance}() (#688)
- dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: buybackAmount}(0,path,DEAD,block.timestamp) (#625-631)
Event emitted after the call(s):
- ContractSwapEnabledUpdated(true) (#701)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- Transfer(from,address(this),feeAmount) (#773)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
- Transfer(from,to,amountReceived) (#756)
- _finalizeTransfer(from,to,amount,takeFee,buy,sell,other) (#637)
Reentrancy in VidCrypto.constructor() (#247-277):
External calls:
- lpPair = IFactoryV2(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#267)
Event emitted after the call(s):
- Approval(sender,spender,amount) (#338)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#271)
- Approval(sender,spender,amount) (#338)
- _approve(_owner,address(dexRouter),type()(uint256).max) (#270)
Reentrancy in VidCrypto.contractSwap(uint256) (#640-690):
External calls:
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(swapAmt,0,path,address(this),block.timestamp) (#659-665)
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
External calls sending eth:
- dexRouter.addLiquidityETH{value: liquidityBalance}(address(this),toLiquify,0,0,DEAD,block.timestamp) (#671-678)
Event emitted after the call(s):
- AutoLiquify(liquidityBalance,toLiquify) (#679)
Reentrancy in VidCrypto.setNewRouter(address) (#354-365):
External calls:
- lpPair = IFactoryV2(_newRouter.factory()).createPair(address(this),_newRouter.WETH()) (#358)
Event emitted after the call(s):
- Approval(sender,spender,amount) (#338)
- _approve(address(this),address(dexRouter),type()(uint256).max) (#364)
Reentrancy in VidCrypto.transferOwner(address) (#286-300):
External calls:
- _finalizeTransfer(_owner,newOwner,balanceOf(_owner),false,false,false,true) (#293)
- antiSnipe.checkUser(from,to,amount) (#741-745)
Event emitted after the call(s):
- OwnershipTransferred(oldOwner,newOwner) (#298)
Apply the check-effects-interactions pattern.

Additional information: link

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. 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 contract audit

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

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 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

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank