SYMBULL Token
About SYMBULL
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A Decentralized Token that created a Crypto EcoVERSE!
SymBULL, RIDE, CHARGE — BullSwap — Innovative Reward System — BullRUN NFT Game — The SymBULL EcoVerse!
SymBULL is a deflationary token designed to become more scarce over time. All holders of SymBULL will earn 8% reward from every Buy/Sell Transaction in Binance pegged BUSD, which is automatically sent to your wallet by simply holding SymBULL.
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Laser Scorebeta Last Audit: 30 November 2021
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SymBULL.buyTokens(uint256,address) (#668-679) sends eth to arbitrary user
Dangerous calls:
- router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,to,block.timestamp) (#673-678)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in SymBULL._transferFrom(address,address,uint256) (#522-545):
External calls:
- swapBack() (#527)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#607-613)
- distributor.deposit{value: amountBNBReflection}() (#623)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#629-636)
- triggerAutoBuyback() (#528)
- router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,to,block.timestamp) (#673-678)
External calls sending eth:
- swapBack() (#527)
- distributor.deposit{value: amountBNBReflection}() (#623)
- address(marketingFeeReceiver).transfer(amountBNBMarketing) (#624)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#629-636)
- triggerAutoBuyback() (#528)
- router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,to,block.timestamp) (#673-678)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#532)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#536)
- amountReceived = takeFee(sender,recipient,amount) (#534)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#584)
- triggerAutoBuyback() (#528)
- inSwap = true (#461)
- inSwap = false (#461)
Apply the check-effects-interactions pattern.
Additional information: link
BountyDistributor.distributeBounty(address) (#353-364) ignores return value by BUSD.transfer(keeper,amount) (#359)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.
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.
Combination 2: Unchecked transfer + 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.
Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
BountyDistributor.process(uint256) (#322-346) has costly operations inside a loop:
- currentIndex ++ (#343)
Use a local variable to hold the loop computation result.
Additional information: link
SymBULL.launched() (#697-699) is never used and should be removed
Remove unused functions.
Additional information: link
Reentrancy in BountyDistributor.setShare(address,uint256) (#286-300):
External calls:
- distributeBounty(keeper) (#288)
- BUSD.transfer(keeper,amount) (#359)
State variables written after the call(s):
- shares[keeper].amount = amount (#298)
- shares[keeper].totalExcluded = getCumulativeBountys(shares[keeper].amount) (#299)
Apply the check-effects-interactions pattern.
Additional information: link
SymBULL.swapBack() (#597-639) ignores return value by router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#629-636)
Ensure that all the return values of the function calls are used.
Additional information: link
SymBULL.setTargetLiquidity(uint256,uint256) (#750-753) should emit an event for:
- targetLiquidity = _target (#751)
- targetLiquidityDenominator = _denominator (#752)
Emit an event for critical parameter changes.
Additional information: link
SymBULL.setFeeReceivers(address,address)._marketingFeeReceiver (#740) lacks a zero-check on :
- marketingFeeReceiver = _marketingFeeReceiver (#742)
Check that the address is not zero.
Additional information: link
Reentrancy in SymBULL.triggerBullRun(uint256,bool) (#649-655):
External calls:
- buyTokens(amount,DEAD) (#650)
- router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,to,block.timestamp) (#673-678)
State variables written after the call(s):
- buybackMultiplierTriggeredAt = block.timestamp (#652)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in SymBULL.triggerBullRun(uint256,bool) (#649-655):
External calls:
- buyTokens(amount,DEAD) (#650)
- router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,to,block.timestamp) (#673-678)
Event emitted after the call(s):
- BuybackMultiplierActive(buybackMultiplierLength) (#653)
Apply the check-effects-interactions pattern.
Additional information: link
SymBULL.isOverLiquified(uint256,uint256) (#772-774) uses timestamp for comparisons
Dangerous comparisons:
- getLiquidityBacking(accuracy) > target (#773)
Avoid relying on block.timestamp.
Additional information: link
SymBULL.onlyBuybacker() (#496) compares to a boolean constant:
-require(bool,string)(buyBacker[msg.sender] == true,) (#496)
Remove the equality to the boolean constant.
Additional information: link
SymBULL.swapThreshold (#459) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 2000
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
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
Variable SymBULL._allowances (#415) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Reentrancy in SymBULL.swapBack() (#597-639):
External calls:
- address(marketingFeeReceiver).transfer(amountBNBMarketing) (#624)
External calls sending eth:
- distributor.deposit{value: amountBNBReflection}() (#623)
- address(marketingFeeReceiver).transfer(amountBNBMarketing) (#624)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#629-636)
Event emitted after the call(s):
- AutoLiquify(amountBNBLiquidity,amountToLiquify) (#637)
Apply the check-effects-interactions pattern.
Additional information: link
Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#183) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#184)
Prevent variables from having similar names.
Additional information: link
SymBULL.slitherConstructorVariables() (#397-779) uses literals with too many digits:
- distributorGas = 500000 (#456)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
SymBULL.DEAD_NON_CHECKSUM (#405) is never used in SymBULL (#397-779)
Remove unused state variables.
Additional information: link
SymBULL._totalSupply (#411) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
launch() should be declared external:
- SymBULL.launch() (#701-705)
Use the external attribute for functions never called from the contract.
Additional information: link
Token is deployed only at one blockchain
Token has only one trading pair
Unable to find PancakeSwap trading pair to compute liquidity.
Unable to find PancakeSwap trading pair to compute number of swaps.
Young tokens have high risks of price dump / death
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 price dump / death
Token has relatively low CoinGecko rank
Token has relatively low CoinMarketCap rank
Price for SYMBULL
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