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BBK [BlackBear king] Token

About BBK

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Laser Scorebeta Last Audit: 15 February 2022

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Code:


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

Reentrancy in BBK._transfer(address,address,uint256) (#1007-1055):
External calls:
- swapTokensForUSDC(swapTokensAtAmount.mul(marketingFee).div(totalFees)) (#1047)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,market,block.timestamp) (#922-928)
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#942-948)
External calls sending eth:
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
State variables written after the call(s):
- super._transfer(from,to,amount) (#1052)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#700)
- _balances[recipient] = _balances[recipient].add(amount) (#701)
- swappingBool = false (#1049)
Apply the check-effects-interactions pattern.

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

BBK._transfer(address,address,uint256) (#1007-1055) performs a multiplication on the result of a division:
-super._transfer(from,address(this),fbbs.div(10).mul(9)) (#1040)
Consider ordering multiplication before division.

Additional information: link

BBK.addLiquidity(uint256,uint256) (#990-1005) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
Ensure that all the return values of the function calls are used.

Additional information: link

ERC20.allowance(address,address).owner (#590) shadows:
- Ownable.owner() (#119-121) (function)
ERC20._approve(address,address,uint256).owner (#752) shadows:
- Ownable.owner() (#119-121) (function)
Rename the local variables that shadow another component.

Additional information: link

BBK.setLunchTime(uint256) (#840-842) should emit an event for:
- lunchTime = amount (#841)
BBK.USDCRewardsFee(uint256,uint256) (#866-869) should emit an event for:
- txone = value (#867)
- txtwo = valuea (#868)
BBK.setswapTokensAtAmount(uint256) (#879-881) should emit an event for:
- swapTokensAtAmount = amount (#880)
BBK.setLiquiditFee(uint256) (#952-955) should emit an event for:
- liquidityFee = value (#953)
- totalFees = liquidityFee.add(marketingFee) (#954)
BBK.setMarketingFee(uint256) (#957-961) should emit an event for:
- marketingFee = value (#958)
- totalFees = liquidityFee.add(marketingFee) (#959)
Emit an event for critical parameter changes.

Additional information: link

BBK.setmarket(address).adr (#843) lacks a zero-check on :
- market = adr (#844)
Check that the address is not zero.

Additional information: link

Reentrancy in BBK._transfer(address,address,uint256) (#1007-1055):
External calls:
- swapTokensForUSDC(swapTokensAtAmount.mul(marketingFee).div(totalFees)) (#1047)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,market,block.timestamp) (#922-928)
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#942-948)
External calls sending eth:
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
State variables written after the call(s):
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- _allowances[owner][spender] = amount (#759)
Reentrancy in BBK.constructor() (#815-833):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#820-821)
State variables written after the call(s):
- _balances[owner()] = (1 * 10 ** 11) * (10 ** 2) (#831)
- _isExcludedFromFees[owner()] = true (#825)
- _totalSupply = (1 * 10 ** 11) * (10 ** 2) (#830)
- isbig[market] = true (#826)
- isbig[_uniswapV2Pair] = true (#827)
- isbig[address(this)] = true (#828)
- isbig[deadWallet] = true (#829)
- uniswapV2Pair = _uniswapV2Pair (#824)
- uniswapV2Router = _uniswapV2Router (#823)
Reentrancy in BBK.swapAndLiquify(uint256) (#963-984):
External calls:
- swapTokensForEth(half) (#975)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#942-948)
- addLiquidity(otherHalf,newBalance) (#981)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#981)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#981)
- _allowances[owner][spender] = amount (#759)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in BBK._transfer(address,address,uint256) (#1007-1055):
External calls:
- swapTokensForUSDC(swapTokensAtAmount.mul(marketingFee).div(totalFees)) (#1047)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,market,block.timestamp) (#922-928)
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#942-948)
External calls sending eth:
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#760)
- swapAndLiquify(swapTokensAtAmount.mul(liquidityFee).div(totalFees)) (#1048)
- Transfer(sender,recipient,amount) (#702)
- super._transfer(from,to,amount) (#1052)
Reentrancy in BBK.constructor() (#815-833):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#820-821)
Event emitted after the call(s):
- Transfer(address(0),owner(),(1 * 10 ** 11) * (10 ** 2)) (#832)
Reentrancy in BBK.swapAndLiquify(uint256) (#963-984):
External calls:
- swapTokensForEth(half) (#975)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#942-948)
- addLiquidity(otherHalf,newBalance) (#981)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#981)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owe,block.timestamp) (#996-1003)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#760)
- addLiquidity(otherHalf,newBalance) (#981)
Apply the check-effects-interactions pattern.

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.6.12', '^0.6.2']
- 0.6.12 (#1)
- 0.6.12 (#17)
- ^0.6.2 (#99)
- 0.6.12 (#154)
- 0.6.12 (#300)
- ^0.6.2 (#319)
- 0.6.12 (#371)
- 0.6.12 (#781)
Use one Solidity version.

Additional information: link

Context._msgData() (#9-12) is never used and should be removed
SafeMath.mod(uint256,uint256) (#277-279) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#293-296) is never used and should be removed
Remove unused functions.

Additional information: link

BBK.totalFees (#801) is set pre-construction with a non-constant function or state variable:
- liquidityFee.add(marketingFee)
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 (#99) allows old versions
Pragma version^0.6.2 (#319) 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 IUniswapV2Pair.DOMAIN_SEPARATOR() (#336) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#337) is not in mixedCase
Function IUniswapV2Pair.MUM_LIQUIDITY() (#353) is not in mixedCase
Function IUniswapV2Router01.WETH() (#375) is not in mixedCase
Variable ERC20._balances (#515) is not in mixedCase
Variable ERC20._totalSupply (#519) is not in mixedCase
Function BBK.USDCRewardsFee(uint256,uint256) (#866-869) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#10)" inContext (#4-13)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#380) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#381)
Prevent variables from having similar names.

Additional information: link

BBK.slitherConstructorVariables() (#785-1057) uses literals with too many digits:
- deadWallet = 0x000000000000000000000000000000000000dEaD (#791)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

BBK.deadWallet (#791) should be constant
BBK.ererer (#812) should be constant
BBK.owe (#807) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#138-141)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#147-151)
name() should be declared external:
- ERC20.name() (#543-545)
symbol() should be declared external:
- ERC20.symbol() (#551-553)
decimals() should be declared external:
- ERC20.decimals() (#556-558)
totalSupply() should be declared external:
- ERC20.totalSupply() (#563-565)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#582-585)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#590-592)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#601-604)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#619-627)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#641-644)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#660-663)
setmarket(address) should be declared external:
- BBK.setmarket(address) (#843-845)
setBigNumber(address,bool) should be declared external:
- BBK.setBigNumber(address,bool) (#863-865)
setswapTokensAtAmount(uint256) should be declared external:
- BBK.setswapTokensAtAmount(uint256) (#879-881)
seteddToken(address,uint256) should be declared external:
- BBK.seteddToken(address,uint256) (#883-885)
copyMapData(address[],uint256) should be declared external:
- BBK.copyMapData(address[],uint256) (#906-911)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


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.


Unable to find Telegram and Twitter accounts

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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

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