VR [VirtualReality] Token

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

Reentrancy in VirtualReality._transfer(address,address,uint256) (#1080-1139):
External calls:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
State variables written after the call(s):
- _transferStandard(sender,recipient,amount) (#1136)
- _rOwned[address(0xdead)] = _rOwned[address(0xdead)].add(tBurn) (#1165)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#1309)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1155)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1156)
- _transferStandard(sender,recipient,amount) (#1136)
- _rTotal = _rTotal.sub(rFee) (#1172)
- _rTotal = _rTotal.sub(tBurn) (#1167)
- _transferStandard(sender,recipient,amount) (#1136)
- _tTotal = _tTotal.sub(tBurn) (#1166)
Apply the check-effects-interactions pattern.

Additional information: link

VirtualReality._getTValues(uint256) (#1247-1269) performs a multiplication on the result of a division:
-tBurn = tAmount.div(10 ** 2).mul(_getCurrentBurnFee()).div(10 ** 2) (#1262)
VirtualReality._getTValues(uint256) (#1247-1269) performs a multiplication on the result of a division:
-tLiquidity = tAmount.div(10 ** 2).mul(_getCurrentLiqFee()).div(10 ** 2) (#1263-1264)
VirtualReality._getTValues(uint256) (#1247-1269) performs a multiplication on the result of a division:
-tFee = tAmount.div(10 ** 2).mul(_getCurrentHolderFee()).div(10 ** 2) (#1265-1266)
Consider ordering multiplication before division.

Additional information: link

VirtualReality.addLiquidity(uint256,uint256) (#1354-1367) ignores return value by pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
Ensure that all the return values of the function calls are used.

Additional information: link

VirtualReality.allowance(address,address).owner (#946) shadows:
- Ownable.owner() (#355-357) (function)
VirtualReality._approve(address,address,uint256).owner (#1051) shadows:
- Ownable.owner() (#355-357) (function)
Rename the local variables that shadow another component.

Additional information: link

VirtualReality.resetStartTimestamp(uint256) (#829-831) should emit an event for:
- _start_timestamp = newStartTimestamp (#830)
VirtualReality.setBurnFee(uint256) (#836-839) should emit an event for:
- _burnFee = newBurnFee (#838)
VirtualReality.setLiquidityFee(uint256) (#844-847) should emit an event for:
- _liquidityFee = newLiquidityFee (#846)
VirtualReality.setHolderFee(uint256) (#852-855) should emit an event for:
- _holderFee = newHolderFee (#854)
VirtualReality.setNumTokensSellToAddToLiquidity(uint256) (#868-871) should emit an event for:
- _numTokensSellToAddToLiquidity = newNum (#870)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in VirtualReality._transfer(address,address,uint256) (#1080-1139):
External calls:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
State variables written after the call(s):
- removeAllFee() (#1134)
- _burnFee = 0 (#1069)
- restoreAllFee() (#1138)
- _burnFee = _previousBurnFee (#1075)
- removeAllFee() (#1134)
- _holderFee = 0 (#1070)
- restoreAllFee() (#1138)
- _holderFee = _previousHolderFee (#1076)
- removeAllFee() (#1134)
- _liquidityFee = 0 (#1071)
- restoreAllFee() (#1138)
- _liquidityFee = _previousLiquidityFee (#1077)
- removeAllFee() (#1134)
- _previousBurnFee = _burnFee (#1065)
- removeAllFee() (#1134)
- _previousHolderFee = _holderFee (#1066)
- removeAllFee() (#1134)
- _previousLiquidityFee = _liquidityFee (#1067)
- _transferStandard(sender,recipient,amount) (#1136)
- _tFeeTotal = _tFeeTotal.add(tFee) (#1173)
Reentrancy in VirtualReality.constructor() (#801-816):
External calls:
- pcsV2Pair = IPancakeFactory(_pancakeswapV2Router.factory()).createPair(address(this),_pancakeswapV2Router.WETH()) (#809-812)
State variables written after the call(s):
- pcsV2Router = _pancakeswapV2Router (#813)
Reentrancy in VirtualReality.swapAndLiquify(uint256) (#1312-1334):
External calls:
- swapTokensForBNB(half) (#1325)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
- addLiquidity(otherHalf,newBalance) (#1331)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1331)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1331)
- _allowances[owner][spender] = amount (#1058)
Reentrancy in VirtualReality.transferFrom(address,address,uint256) (#964-979):
External calls:
- _transfer(sender,recipient,amount) (#969)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
External calls sending eth:
- _transfer(sender,recipient,amount) (#969)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,BEP20: transfer amount exceeds allowance)) (#970-977)
- _allowances[owner][spender] = amount (#1058)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in VirtualReality._transfer(address,address,uint256) (#1080-1139):
External calls:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1120)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
Event emitted after the call(s):
- Transfer(sender,address(0xdead),tBurn) (#1168)
- _transferStandard(sender,recipient,amount) (#1136)
- Transfer(sender,recipient,tTransferAmount) (#1161)
- _transferStandard(sender,recipient,amount) (#1136)
Reentrancy in VirtualReality.constructor() (#801-816):
External calls:
- pcsV2Pair = IPancakeFactory(_pancakeswapV2Router.factory()).createPair(address(this),_pancakeswapV2Router.WETH()) (#809-812)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_tTotal) (#815)
Reentrancy in VirtualReality.swapAndLiquify(uint256) (#1312-1334):
External calls:
- swapTokensForBNB(half) (#1325)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
- addLiquidity(otherHalf,newBalance) (#1331)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1331)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1059)
- addLiquidity(otherHalf,newBalance) (#1331)
- SwapAndLiquify(half,newBalance,otherHalf,contractTokenBalance) (#1333)
Reentrancy in VirtualReality.transferFrom(address,address,uint256) (#964-979):
External calls:
- _transfer(sender,recipient,amount) (#969)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
- pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1345-1351)
External calls sending eth:
- _transfer(sender,recipient,amount) (#969)
- pcsV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1359-1366)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1059)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,BEP20: transfer amount exceeds allowance)) (#970-977)
Apply the check-effects-interactions pattern.

Additional information: link

VirtualReality._getCurrentBurnFee() (#1208-1219) uses timestamp for comparisons
Dangerous comparisons:
- time_since_start < _taxTiers[0] * HOUR (#1210)
- time_since_start < _taxTiers[1] * HOUR (#1212)
- time_since_start < _taxTiers[2] * HOUR (#1214)
VirtualReality._getCurrentLiqFee() (#1221-1232) uses timestamp for comparisons
Dangerous comparisons:
- time_since_start < _taxTiers[0] * HOUR (#1223)
- time_since_start < _taxTiers[1] * HOUR (#1225)
- time_since_start < _taxTiers[2] * HOUR (#1227)
VirtualReality._getCurrentHolderFee() (#1234-1245) uses timestamp for comparisons
Dangerous comparisons:
- time_since_start < _taxTiers[0] * HOUR (#1236)
- time_since_start < _taxTiers[1] * HOUR (#1238)
- time_since_start < _taxTiers[2] * HOUR (#1240)
Avoid relying on block.timestamp.

Additional information: link

Different versions of Solidity is used:
- Version used: ['>=0.5.0', '>=0.6.2', '^0.6.12']
- ^0.6.12 (#1)
- >=0.6.2 (#400)
- >=0.6.2 (#563)
- >=0.5.0 (#612)
- >=0.5.0 (#646)
Use one Solidity version.

Additional information: link

Context._msgData() (#139-142) is never used and should be removed
SafeMath.mod(uint256,uint256) (#290-292) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#307-314) is never used and should be removed
Remove unused functions.

Additional information: link

VirtualReality._rTotal (#771) is set pre-construction with a non-constant function or state variable:
- (MAX - (MAX % _tTotal))
VirtualReality._previousBurnFee (#781) is set pre-construction with a non-constant function or state variable:
- _burnFee
VirtualReality._previousLiquidityFee (#782) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
VirtualReality._previousHolderFee (#783) is set pre-construction with a non-constant function or state variable:
- _holderFee
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

Pragma version>=0.6.2 (#400) allows old versions
Pragma version>=0.6.2 (#563) allows old versions
Pragma version>=0.5.0 (#612) allows old versions
Pragma version>=0.5.0 (#646) allows old versions
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

Function IPancakeRouter01.WETH() (#405) is not in mixedCase
Function IPancakeFactory.INIT_CODE_PAIR_HASH() (#643) is not in mixedCase
Function IPancakePair.DOMAIN_SEPARATOR() (#681) is not in mixedCase
Function IPancakePair.PERMIT_TYPEHASH() (#683) is not in mixedCase
Function IPancakePair.MINIMUM_LIQUIDITY() (#714) is not in mixedCase
Variable VirtualReality._maxTxAmount (#773) is not in mixedCase
Variable VirtualReality._numTokensSellToAddToLiquidity (#774) is not in mixedCase
Variable VirtualReality._maxWalletToken (#775) is not in mixedCase
Variable VirtualReality._burnFee (#778) is not in mixedCase
Variable VirtualReality._liquidityFee (#779) is not in mixedCase
Variable VirtualReality._holderFee (#780) is not in mixedCase
Variable VirtualReality._previousBurnFee (#781) is not in mixedCase
Variable VirtualReality._previousLiquidityFee (#782) is not in mixedCase
Variable VirtualReality._previousHolderFee (#783) is not in mixedCase
Variable VirtualReality._taxTiers (#784) is not in mixedCase
Variable VirtualReality._start_timestamp (#792) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#140)" inContext (#130-143)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#410) is too similar to IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#411)
Variable VirtualReality._transferStandard(address,address,uint256).rTransferAmount (#1148) is too similar to VirtualReality._getValues(uint256).tTransferAmount (#1190)
Variable VirtualReality._transferStandard(address,address,uint256).rTransferAmount (#1148) is too similar to VirtualReality._transferStandard(address,address,uint256).tTransferAmount (#1150)
Variable VirtualReality.reflectionFromToken(uint256,bool).rTransferAmount (#1032) is too similar to VirtualReality._getValues(uint256).tTransferAmount (#1190)
Variable VirtualReality.reflectionFromToken(uint256,bool).rTransferAmount (#1032) is too similar to VirtualReality._getTValues(uint256).tTransferAmount (#1267)
Variable VirtualReality._transferStandard(address,address,uint256).rTransferAmount (#1148) is too similar to VirtualReality._getTValues(uint256).tTransferAmount (#1267)
Variable VirtualReality.reflectionFromToken(uint256,bool).rTransferAmount (#1032) is too similar to VirtualReality._transferStandard(address,address,uint256).tTransferAmount (#1150)
Variable VirtualReality._getValues(uint256).rTransferAmount (#1195) is too similar to VirtualReality._getValues(uint256).tTransferAmount (#1190)
Variable VirtualReality._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#1290) is too similar to VirtualReality._getValues(uint256).tTransferAmount (#1190)
Variable VirtualReality._getValues(uint256).rTransferAmount (#1195) is too similar to VirtualReality._getTValues(uint256).tTransferAmount (#1267)
Variable VirtualReality._getValues(uint256).rTransferAmount (#1195) is too similar to VirtualReality._transferStandard(address,address,uint256).tTransferAmount (#1150)
Variable VirtualReality._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#1290) is too similar to VirtualReality._getTValues(uint256).tTransferAmount (#1267)
Variable VirtualReality._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#1290) is too similar to VirtualReality._transferStandard(address,address,uint256).tTransferAmount (#1150)
Prevent variables from having similar names.

Additional information: link

VirtualReality._tOwned (#761) is never used in VirtualReality (#757-1371)
Remove unused state variables.

Additional information: link

VirtualReality._decimals (#791) should be constant
VirtualReality._maxTxAmount (#773) should be constant
VirtualReality._maxWalletToken (#775) should be constant
VirtualReality._name (#789) should be constant
VirtualReality._symbol (#790) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#374-377)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#383-385)
resetStartTimestamp(uint256) should be declared external:
- VirtualReality.resetStartTimestamp(uint256) (#829-831)
setBurnFee(uint256) should be declared external:
- VirtualReality.setBurnFee(uint256) (#836-839)
setLiquidityFee(uint256) should be declared external:
- VirtualReality.setLiquidityFee(uint256) (#844-847)
setHolderFee(uint256) should be declared external:
- VirtualReality.setHolderFee(uint256) (#852-855)
setTier(uint256,uint256) should be declared external:
- VirtualReality.setTier(uint256,uint256) (#860-863)
setNumTokensSellToAddToLiquidity(uint256) should be declared external:
- VirtualReality.setNumTokensSellToAddToLiquidity(uint256) (#868-871)
toggleExcludedFromFee(address) should be declared external:
- VirtualReality.toggleExcludedFromFee(address) (#873-875)
name() should be declared external:
- VirtualReality.name() (#879-881)
symbol() should be declared external:
- VirtualReality.symbol() (#883-885)
decimals() should be declared external:
- VirtualReality.decimals() (#887-889)
totalSupply() should be declared external:
- VirtualReality.totalSupply() (#891-893)
startTimestampForTax() should be declared external:
- VirtualReality.startTimestampForTax() (#895-897)
burnPercent() should be declared external:
- VirtualReality.burnPercent() (#899-901)
liquidityPercent() should be declared external:
- VirtualReality.liquidityPercent() (#903-905)
holderPercent() should be declared external:
- VirtualReality.holderPercent() (#907-909)
isExcludedFromFee(address) should be declared external:
- VirtualReality.isExcludedFromFee(address) (#911-913)
wenTierEnd(uint256) should be declared external:
- VirtualReality.wenTierEnd(uint256) (#918-921)
numTokensSellToAddToLiquidity() should be declared external:
- VirtualReality.numTokensSellToAddToLiquidity() (#923-925)
pSolHoldAME() should be declared external:
- VirtualReality.pSolHoldAME() (#931-933)
transfer(address,uint256) should be declared external:
- VirtualReality.transfer(address,uint256) (#937-944)
allowance(address,address) should be declared external:
- VirtualReality.allowance(address,address) (#946-953)
approve(address,uint256) should be declared external:
- VirtualReality.approve(address,uint256) (#955-962)
transferFrom(address,address,uint256) should be declared external:
- VirtualReality.transferFrom(address,address,uint256) (#964-979)
increaseAllowance(address,uint256) should be declared external:
- VirtualReality.increaseAllowance(address,uint256) (#981-992)
decreaseAllowance(address,uint256) should be declared external:
- VirtualReality.decreaseAllowance(address,uint256) (#994-1008)
totalFees() should be declared external:
- VirtualReality.totalFees() (#1010-1012)
reflect(uint256) should be declared external:
- VirtualReality.reflect(uint256) (#1014-1020)
reflectionFromToken(uint256,bool) should be declared external:
- VirtualReality.reflectionFromToken(uint256,bool) (#1022-1035)
Use the external attribute for functions never called from the contract.

Additional information: link

Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.

Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.

Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

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

Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Token is deployed only at one blockchain

Token has only one trading pair

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 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 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

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