Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
RouDwenDwen.addLiquidity(uint256,uint256) (#760-773) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in RouDwenDwen._transfer(address,address,uint256) (#669-707):
External calls:
- swapAndLiquify(contractTokenBalance) (#691)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#691)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#694)
- _balances[recipient] = _balances[recipient].add(finalAmount) (#702)
- finalAmount = takeFee(sender,recipient,amount) (#696-697)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#787)
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.
Reentrancy in RouDwenDwen.changeRouterVersion(address) (#636-653):
External calls:
- newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#644-645)
State variables written after the call(s):
- isMarketPair[address(uniswapPair)] = true (#652)
- isWalletLimitExempt[address(uniswapPair)] = true (#651)
- uniswapPair = newPairAddress (#648)
- uniswapV2Router = _uniswapV2Router (#649)
Reentrancy in RouDwenDwen.constructor() (#468-502):
External calls:
- uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#472-473)
State variables written after the call(s):
- _allowances[address(this)][address(uniswapV2Router)] = _totalSupply (#476)
- _balances[_msgSender()] = _totalSupply (#500)
- _totalDistributionShares = _liquidityShare.add(_marketingShare).add(_teamShare) (#485)
- _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyTeamFee) (#483)
- _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellTeamFee) (#484)
- isExcludedFromFee[owner()] = true (#478)
- isExcludedFromFee[marketingWalletAddress] = true (#479)
- isExcludedFromFee[teamWalletAddress] = true (#480)
- isExcludedFromFee[address(this)] = true (#481)
- isMarketPair[address(uniswapPair)] = true (#498)
- isTxLimitExempt[owner()] = true (#493)
- isTxLimitExempt[address(this)] = true (#494)
- isTxLimitExempt[marketingWalletAddress] = true (#495)
- isTxLimitExempt[teamWalletAddress] = true (#496)
- isWalletLimitExempt[owner()] = true (#487)
- isWalletLimitExempt[address(uniswapPair)] = true (#488)
- isWalletLimitExempt[address(this)] = true (#489)
- isWalletLimitExempt[marketingWalletAddress] = true (#490)
- isWalletLimitExempt[teamWalletAddress] = true (#491)
- uniswapV2Router = _uniswapV2Router (#475)
Reentrancy in RouDwenDwen.swapAndLiquify(uint256) (#716-738):
External calls:
- swapTokensForEth(tokensForSwap) (#721)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#731)
- recipient.transfer(amount) (#633)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#734)
- recipient.transfer(amount) (#633)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- _allowances[owner][spender] = amount (#551)
Reentrancy in RouDwenDwen.transferFrom(address,address,uint256) (#663-667):
External calls:
- _transfer(sender,recipient,amount) (#664)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
External calls sending eth:
- _transfer(sender,recipient,amount) (#664)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#665)
- _allowances[owner][spender] = amount (#551)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in RouDwenDwen._transfer(address,address,uint256) (#669-707):
External calls:
- swapAndLiquify(contractTokenBalance) (#691)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#691)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#788)
- finalAmount = takeFee(sender,recipient,amount) (#696-697)
- Transfer(sender,recipient,finalAmount) (#704)
Reentrancy in RouDwenDwen.constructor() (#468-502):
External calls:
- uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#472-473)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_totalSupply) (#501)
Reentrancy in RouDwenDwen.swapAndLiquify(uint256) (#716-738):
External calls:
- swapTokensForEth(tokensForSwap) (#721)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#731)
- recipient.transfer(amount) (#633)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#734)
- recipient.transfer(amount) (#633)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#552)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
Reentrancy in RouDwenDwen.swapTokensForEth(uint256) (#740-758):
External calls:
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
Event emitted after the call(s):
- SwapTokensForETH(tokenAmount,path) (#757)
Reentrancy in RouDwenDwen.transferFrom(address,address,uint256) (#663-667):
External calls:
- _transfer(sender,recipient,amount) (#664)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#749-755)
External calls sending eth:
- _transfer(sender,recipient,amount) (#664)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#552)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#665)
Apply the check-effects-interactions pattern.
Additional information: link
Ownable.unlock() (#187-192) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is locked until 7 days) (#189)
Avoid relying on block.timestamp.
Additional information: link
Address.isContract(address) (#83-92) uses assembly
- INLINE ASM (#90)
Address._functionCallWithValue(address,bytes,uint256,string) (#119-136) uses assembly
- INLINE ASM (#128-131)
Do not use evm assembly.
Additional information: link
Address._functionCallWithValue(address,bytes,uint256,string) (#119-136) is never used and should be removed
Address.functionCall(address,bytes) (#102-104) is never used and should be removed
Address.functionCall(address,bytes,string) (#106-108) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#110-112) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#114-117) is never used and should be removed
Address.isContract(address) (#83-92) is never used and should be removed
Address.sendValue(address,uint256) (#94-100) is never used and should be removed
Context._msgData() (#10-13) is never used and should be removed
SafeMath.mod(uint256,uint256) (#71-73) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#75-78) is never used and should be removed
Remove unused functions.
Additional information: link
RouDwenDwen._totalSupply (#432) is set pre-construction with a non-constant function or state variable:
- 100000 * 10 ** _decimals
RouDwenDwen._maxTxAmount (#433) is set pre-construction with a non-constant function or state variable:
- 1000 * 10 ** _decimals
RouDwenDwen._walletMax (#434) is set pre-construction with a non-constant function or state variable:
- 100000 * 10 ** _decimals
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^0.8.0 (#2) allows old versions
solc-0.8.1 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 Address.sendValue(address,uint256) (#94-100):
- (success) = recipient.call{value: amount}() (#98)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#119-136):
- (success,returndata) = target.call{value: weiValue}(data) (#122)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
RouDwenDwen.addLiquidity(uint256,uint256) (#760-773) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
Ensure that all the return values of the function calls are used.
Additional information: link
RouDwenDwen.allowance(address,address).owner (#524) shadows:
- Ownable.owner() (#152-154) (function)
RouDwenDwen._approve(address,address,uint256).owner (#547) shadows:
- Ownable.owner() (#152-154) (function)
Rename the local variables that shadow another component.
Additional information: link
RouDwenDwen.setBuyTaxes(uint256,uint256,uint256) (#567-573) should emit an event for:
- _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyTeamFee) (#572)
RouDwenDwen.setSellTaxes(uint256,uint256,uint256) (#575-581) should emit an event for:
- _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellTeamFee) (#580)
RouDwenDwen.setDistributionSettings(uint256,uint256,uint256) (#583-589) should emit an event for:
- _liquidityShare = newLiquidityShare (#584)
- _teamShare = newTeamShare (#586)
- _totalDistributionShares = _liquidityShare.add(_marketingShare).add(_teamShare) (#588)
RouDwenDwen.setMaxTxAmount(uint256) (#591-593) should emit an event for:
- _maxTxAmount = maxTxAmount (#592)
RouDwenDwen.setWalletLimit(uint256) (#603-605) should emit an event for:
- _walletMax = newLimit (#604)
RouDwenDwen.setNumTokensBeforeSwap(uint256) (#607-609) should emit an event for:
- minimumTokensBeforeSwap = newLimit (#608)
Emit an event for critical parameter changes.
Additional information: link
RouDwenDwen.setMarketingWalletAddress(address).newAddress (#611) lacks a zero-check on :
- marketingWalletAddress = address(newAddress) (#612)
RouDwenDwen.setTeamWalletAddress(address).newAddress (#615) lacks a zero-check on :
- teamWalletAddress = address(newAddress) (#616)
Check that the address is not zero.
Additional information: link
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#226) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#227) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#243) is not in mixedCase
Function IUniswapV2Router01.WETH() (#262) is not in mixedCase
Parameter RouDwenDwen.setSwapAndLiquifyEnabled(bool)._enabled (#619) is not in mixedCase
Variable RouDwenDwen._balances (#408) is not in mixedCase
Variable RouDwenDwen._buyLiquidityFee (#416) is not in mixedCase
Variable RouDwenDwen._buyMarketingFee (#417) is not in mixedCase
Variable RouDwenDwen._buyTeamFee (#418) is not in mixedCase
Variable RouDwenDwen._sellLiquidityFee (#420) is not in mixedCase
Variable RouDwenDwen._sellMarketingFee (#421) is not in mixedCase
Variable RouDwenDwen._sellTeamFee (#422) is not in mixedCase
Variable RouDwenDwen._liquidityShare (#424) is not in mixedCase
Variable RouDwenDwen._marketingShare (#425) is not in mixedCase
Variable RouDwenDwen._teamShare (#426) is not in mixedCase
Variable RouDwenDwen._totalTaxIfBuying (#428) is not in mixedCase
Variable RouDwenDwen._totalTaxIfSelling (#429) is not in mixedCase
Variable RouDwenDwen._totalDistributionShares (#430) is not in mixedCase
Variable RouDwenDwen._maxTxAmount (#433) is not in mixedCase
Variable RouDwenDwen._walletMax (#434) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#11)" inContext (#4-14)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Reentrancy in RouDwenDwen._transfer(address,address,uint256) (#669-707):
External calls:
- swapAndLiquify(contractTokenBalance) (#691)
- recipient.transfer(amount) (#633)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#691)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#694)
- _balances[recipient] = _balances[recipient].add(finalAmount) (#702)
- finalAmount = takeFee(sender,recipient,amount) (#696-697)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#787)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#788)
- finalAmount = takeFee(sender,recipient,amount) (#696-697)
- Transfer(sender,recipient,finalAmount) (#704)
Reentrancy in RouDwenDwen.swapAndLiquify(uint256) (#716-738):
External calls:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#731)
- recipient.transfer(amount) (#633)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#734)
- recipient.transfer(amount) (#633)
External calls sending eth:
- transferToAddressETH(marketingWalletAddress,amountBNBMarketing) (#731)
- recipient.transfer(amount) (#633)
- transferToAddressETH(teamWalletAddress,amountBNBTeam) (#734)
- recipient.transfer(amount) (#633)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
- _allowances[owner][spender] = amount (#551)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#552)
- addLiquidity(tokensForLP,amountBNBLiquidity) (#737)
Reentrancy in RouDwenDwen.transferFrom(address,address,uint256) (#663-667):
External calls:
- _transfer(sender,recipient,amount) (#664)
- recipient.transfer(amount) (#633)
External calls sending eth:
- _transfer(sender,recipient,amount) (#664)
- recipient.transfer(amount) (#633)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#765-772)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#665)
- _allowances[owner][spender] = amount (#551)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#552)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#665)
Apply the check-effects-interactions pattern.
Additional information: link
Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#267) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#268)
Prevent variables from having similar names.
Additional information: link
RouDwenDwen.slitherConstructorVariables() (#395-795) uses literals with too many digits:
- teamWalletAddress = address(0xC7ce024e0432ec74Af588D80CC2153a2a6000000) (#405)
RouDwenDwen.slitherConstructorVariables() (#395-795) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#406)
RouDwenDwen.slitherConstructorVariables() (#395-795) uses literals with too many digits:
- _totalSupply = 100000 * 10 ** _decimals (#432)
RouDwenDwen.slitherConstructorVariables() (#395-795) uses literals with too many digits:
- _walletMax = 100000 * 10 ** _decimals (#434)
RouDwenDwen.slitherConstructorVariables() (#395-795) uses literals with too many digits:
- minimumTokensBeforeSwap = 100000 * 10 ** 3 (#435)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
RouDwenDwen._decimals (#402) should be constant
RouDwenDwen._name (#400) should be constant
RouDwenDwen._symbol (#401) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
waiveOwnership() should be declared external:
- Ownable.waiveOwnership() (#161-164)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#166-170)
getUnlockTime() should be declared external:
- Ownable.getUnlockTime() (#172-174)
getTime() should be declared external:
- Ownable.getTime() (#176-178)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#180-185)
unlock() should be declared external:
- Ownable.unlock() (#187-192)
name() should be declared external:
- RouDwenDwen.name() (#504-506)
symbol() should be declared external:
- RouDwenDwen.symbol() (#508-510)
decimals() should be declared external:
- RouDwenDwen.decimals() (#512-514)
totalSupply() should be declared external:
- RouDwenDwen.totalSupply() (#516-518)
allowance(address,address) should be declared external:
- RouDwenDwen.allowance(address,address) (#524-526)
increaseAllowance(address,uint256) should be declared external:
- RouDwenDwen.increaseAllowance(address,uint256) (#528-531)
decreaseAllowance(address,uint256) should be declared external:
- RouDwenDwen.decreaseAllowance(address,uint256) (#533-536)
minimumTokensBeforeSwapAmount() should be declared external:
- RouDwenDwen.minimumTokensBeforeSwapAmount() (#538-540)
approve(address,uint256) should be declared external:
- RouDwenDwen.approve(address,uint256) (#542-545)
setMarketPairStatus(address,bool) should be declared external:
- RouDwenDwen.setMarketPairStatus(address,bool) (#555-557)
setIsExcludedFromFee(address,bool) should be declared external:
- RouDwenDwen.setIsExcludedFromFee(address,bool) (#563-565)
setSwapAndLiquifyEnabled(bool) should be declared external:
- RouDwenDwen.setSwapAndLiquifyEnabled(bool) (#619-622)
setSwapAndLiquifyByLimitOnly(bool) should be declared external:
- RouDwenDwen.setSwapAndLiquifyByLimitOnly(bool) (#624-626)
getCirculatingSupply() should be declared external:
- RouDwenDwen.getCirculatingSupply() (#628-630)
changeRouterVersion(address) should be declared external:
- RouDwenDwen.changeRouterVersion(address) (#636-653)
transfer(address,uint256) should be declared external:
- RouDwenDwen.transfer(address,uint256) (#658-661)
transferFrom(address,address,uint256) should be declared external:
- RouDwenDwen.transferFrom(address,address,uint256) (#663-667)
Use the external attribute for functions never called from the contract.
Additional information: link
Unable to find website, listings and other project-related information
Young tokens have high risks of scam / price dump / death
Token has no active CoinGecko listing / rank
Token has no active CoinMarketCap listing / rank
Unable to find Telegram and Twitter accounts