OlympicKing Token

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

OlympicKing.swapBack() (#456-478) sends eth to arbitrary user
Dangerous calls:
- address(marketingWallet).transfer(amountMarketing) (#476)
- address(treasury).transfer(amountTreasury) (#477)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in OlympicKing._transferFrom(address,address,uint256) (#405-432):
External calls:
- swapBack() (#419)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#464-470)
External calls sending eth:
- swapBack() (#419)
- address(marketingWallet).transfer(amountMarketing) (#476)
- address(treasury).transfer(amountTreasury) (#477)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#421)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#425)
- amountReceived = takeFee(sender,amount) (#423)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#449)
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.

DividendDistributor.setShare(address,uint256) (#220-234) should emit an event for:
- totalShares = totalShares.sub(shares[shareholder].amount).add(amount) (#231)
OlympicKing.setFee(uint256) (#531-534) should emit an event for:
- totalFee = _fee (#533)
Emit an event for critical parameter changes.

Additional information: link

DividendDistributor.constructor(address,address).owner (#212) lacks a zero-check on :
- _owner = address(owner) (#214)
DividendDistributor.constructor(address,address).treasury (#212) lacks a zero-check on :
- _treasury = address(treasury) (#215)
DividendDistributor.manualSend(uint256,address).holder (#286) lacks a zero-check on :
- address(holder).transfer(amount) (#288)
- address(holder).transfer(contractETHBalance) (#288)
DividendDistributor.setTreasury(address).treasury (#291) lacks a zero-check on :
- _treasury = address(treasury) (#292)
Auth.transferOwnership(address).adr (#112) lacks a zero-check on :
- owner = adr (#113)
OlympicKing.setMarketingWallet(address)._marketingWallet (#562) lacks a zero-check on :
- marketingWallet = address(_marketingWallet) (#563)
OlympicKing.setTreasury(address)._treasury (#566) lacks a zero-check on :
- treasury = address(_treasury) (#567)
Check that the address is not zero.

Additional information: link

OlympicKing._setIsDividendExempt(address,bool) (#513-521) has external calls inside a loop: distributor.setShare(holder,0) (#517)
OlympicKing._setIsDividendExempt(address,bool) (#513-521) has external calls inside a loop: distributor.setShare(holder,_balances[holder]) (#519)
Favor pull over push strategy for external calls.

Additional information: link

Reentrancy in OlympicKing.constructor() (#348-371):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WETH,address(this)) (#354)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = type()(uint256).max (#356)
- _balances[_owner] = _totalSupply (#368)
- distributor = new DividendDistributor(_owner,treasury) (#358)
- isDividendExempt[pair] = true (#364)
- isDividendExempt[address(this)] = true (#365)
- isDividendExempt[DEAD] = true (#366)
- isFeeExempt[_owner] = true (#360)
- isFeeExempt[marketingWallet] = true (#361)
- isFeeExempt[treasury] = true (#362)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in OlympicKing._transferFrom(address,address,uint256) (#405-432):
External calls:
- swapBack() (#419)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#464-470)
- distributor.setShare(sender,_balances[sender]) (#427)
- distributor.setShare(recipient,_balances[recipient]) (#428)
External calls sending eth:
- swapBack() (#419)
- address(marketingWallet).transfer(amountMarketing) (#476)
- address(treasury).transfer(amountTreasury) (#477)
Event emitted after the call(s):
- Transfer(sender,recipient,amountReceived) (#430)
Reentrancy in OlympicKing._transferFrom(address,address,uint256) (#405-432):
External calls:
- swapBack() (#419)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#464-470)
External calls sending eth:
- swapBack() (#419)
- address(marketingWallet).transfer(amountMarketing) (#476)
- address(treasury).transfer(amountTreasury) (#477)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#450)
- amountReceived = takeFee(sender,amount) (#423)
Reentrancy in OlympicKing.constructor() (#348-371):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WETH,address(this)) (#354)
Event emitted after the call(s):
- Transfer(address(0),_owner,_totalSupply) (#370)
Apply the check-effects-interactions pattern.

Additional information: link

OlympicKing._maxTxAmountBuy (#314) is set pre-construction with a non-constant function or state variable:
- _totalSupply
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

Function IDEXRouter.WETH() (#126) is not in mixedCase
Variable DividendDistributor._token (#183) is not in mixedCase
Variable DividendDistributor._owner (#184) is not in mixedCase
Variable DividendDistributor._treasury (#185) is not in mixedCase
Parameter OlympicKing.setBot(address)._address (#487) is not in mixedCase
Parameter OlympicKing.isInBot(address)._address (#509) is not in mixedCase
Parameter OlympicKing.setFee(uint256)._fee (#531) is not in mixedCase
Parameter OlympicKing.setMarketingWallet(address)._marketingWallet (#562) is not in mixedCase
Parameter OlympicKing.setTreasury(address)._treasury (#566) is not in mixedCase
Variable OlympicKing.WETH (#305) is not in mixedCase
Variable OlympicKing.DEAD (#306) is not in mixedCase
Variable OlympicKing.ZERO (#307) is not in mixedCase
Constant OlympicKing._name (#309) is not in UPPER_CASE_WITH_UNDERSCORES
Constant OlympicKing._symbol (#310) is not in UPPER_CASE_WITH_UNDERSCORES
Constant OlympicKing._decimals (#311) is not in UPPER_CASE_WITH_UNDERSCORES
Follow the Solidity naming convention.

Additional information: link

Reentrancy in OlympicKing._transferFrom(address,address,uint256) (#405-432):
External calls:
- swapBack() (#419)
- address(marketingWallet).transfer(amountMarketing) (#476)
- address(treasury).transfer(amountTreasury) (#477)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#421)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#425)
- amountReceived = takeFee(sender,amount) (#423)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#449)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#450)
- amountReceived = takeFee(sender,amount) (#423)
- Transfer(sender,recipient,amountReceived) (#430)
Reentrancy in DividendDistributor.setShare(address,uint256) (#220-234):
External calls:
- distributeDividend(shareholder) (#222)
- address(shareholder).transfer(amount) (#252)
State variables written after the call(s):
- addShareholder(shareholder) (#226)
- shareholderIndexes[shareholder] = shareholders.length (#276)
- removeShareholder(shareholder) (#228)
- shareholderIndexes[shareholders[shareholders.length - 1]] = shareholderIndexes[shareholder] (#282)
- addShareholder(shareholder) (#226)
- shareholders.push(shareholder) (#277)
- removeShareholder(shareholder) (#228)
- shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length - 1] (#281)
- shareholders.pop() (#283)
- shares[shareholder].amount = amount (#232)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#233)
- totalShares = totalShares.sub(shares[shareholder].amount).add(amount) (#231)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#131) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#132)
Prevent variables from having similar names.

Additional information: link

OlympicKing.slitherConstructorVariables() (#302-587) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#306)
OlympicKing.slitherConstructorVariables() (#302-587) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#307)
OlympicKing.slitherConstructorVariables() (#302-587) uses literals with too many digits:
- _totalSupply = 10000000000 * (10 ** _decimals) (#313)
OlympicKing.slitherConstructorVariables() (#302-587) uses literals with too many digits:
- maxBuy = 10000000000 * (10 ** _decimals) (#338)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

OlympicKing._maxTxAmountBuy (#314) is never used in OlympicKing (#302-587)
Remove unused state variables.

Additional information: link

DividendDistributor.dividendsPerShareAccuracyFactor (#202) should be constant
OlympicKing.DEAD (#306) should be constant
OlympicKing.ZERO (#307) should be constant
OlympicKing._totalSupply (#313) should be constant
OlympicKing.feeDenominator (#327) should be constant
OlympicKing.maxBuy (#338) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

transferOwnership(address) should be declared external:
- Auth.transferOwnership(address) (#112-115)
getClaimableDividendOf(address) should be declared external:
- OlympicKing.getClaimableDividendOf(address) (#550-552)
getCirculatingSupply() should be declared external:
- OlympicKing.getCirculatingSupply() (#558-560)
Use the external attribute for functions never called from the contract.

Additional information: link

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. Ignore for presale.

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