MSTEPN [Mini StepN] Token

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

Reentrancy in MSTEPN._transferFrom(address,address,uint256) (#510-558):
External calls:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
- router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
External calls sending eth:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
State variables written after the call(s):
- _gonBalances[sender] = _gonBalances[sender].sub(gonAmount) (#538)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonAmountReceived) (#541)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#540)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(feeAmount) (#680)
- _rebase() (#550)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (#748)
Apply the check-effects-interactions pattern.

Additional information: link

Contract ownership is not renounced (belongs to a wallet)

MSTEPN.shouldRebase() (#450-452) uses timestamp for comparisons
Dangerous comparisons:
- nextRebase <= block.timestamp (#451)
MSTEPN._transferFrom(address,address,uint256) (#510-558) uses timestamp for comparisons
Dangerous comparisons:
- shouldRebase() && autoRebase (#549)
MSTEPN.manualRebase() (#756-765) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(nextRebase <= block.timestamp,Not in time) (#758)
Avoid relying on block.timestamp.

Additional information: link

MSTEPN.manualSync() (#489-493) has external calls inside a loop: InterfaceLP(_markerPairs[i]).sync() (#491)
Favor pull over push strategy for external calls.

Additional information: link

MSTEPN.setAutomatedMarketMakerPair(address,bool) (#767-786) has costly operations inside a loop:
- _markerPairs.pop() (#779)
Use a local variable to hold the loop computation result.

Additional information: link

SafeMathInt.MAX_INT256 (#7) is never used in SafeMathInt (#5-39)
Remove unused state variables.

Additional information: link

MSTEPN.swapBack() (#649-672) performs a multiplication on the result of a division:
-contractTokenBalance = _gonBalances[address(this)].div(_gonsPerFragment) (#653)
-amountToLiquify = contractTokenBalance.mul(dynamicLiquidityFee.mul(2)).div(realTotalFee) (#655)
MSTEPN.swapBack() (#649-672) performs a multiplication on the result of a division:
-contractTokenBalance = _gonBalances[address(this)].div(_gonsPerFragment) (#653)
-amountToRFV = contractTokenBalance.mul(buyFeemarketing.mul(2).add(sellFeemarketingAdded)).div(realTotalFee) (#656)
MSTEPN.setSwapBackSettings(bool,uint256,uint256) (#806-809) performs a multiplication on the result of a division:
-gonSwapThreshold = TOTAL_GONS.div(_denom).mul(_num) (#808)
Consider ordering multiplication before division.

Additional information: link

MSTEPN.constructor() (#397-426) ignores return value by IBEP20(busdToken).approve(address(router),uint256(- 1)) (#421)
MSTEPN.constructor() (#397-426) ignores return value by IBEP20(busdToken).approve(address(pairBusd),uint256(- 1)) (#422)
MSTEPN.constructor() (#397-426) ignores return value by IBEP20(busdToken).approve(address(this),uint256(- 1)) (#423)
MSTEPN.getLiquidityBacking(uint256) (#477-483) ignores return value by liquidityBalance.add(balanceOf(_markerPairs[i]).div(10 ** 9)) (#480)
MSTEPN._addLiquidity(uint256,uint256) (#598-607) ignores return value by router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
MSTEPN._addLiquidityBusd(uint256,uint256) (#608-619) ignores return value by router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
Ensure that all the return values of the function calls are used.

Additional information: link

MSTEPN.setTargetLiquidity(uint256,uint256) (#801-804) should emit an event for:
- targetLiquidity = target (#802)
- targetLiquidityDenominator = accuracy (#803)
MSTEPN.setSwapBackSettings(bool,uint256,uint256) (#806-809) should emit an event for:
- gonSwapThreshold = TOTAL_GONS.div(_denom).mul(_num) (#808)
MSTEPN.setRebaseFrequency(uint256) (#833-836) should emit an event for:
- rebaseFrequency = _rebaseFrequency (#835)
MSTEPN.setRewardYield(uint256,uint256) (#838-841) should emit an event for:
- rewardYield = _rewardYield (#839)
- rewardYieldDenominator = _rewardYieldDenominator (#840)
MSTEPN.setNextRebase(uint256) (#853-855) should emit an event for:
- nextRebase = _nextRebase (#854)
Emit an event for critical parameter changes.

Additional information: link

MSTEPN.setFeeReceivers(address,address,address)._liquidityReceiver (#811) lacks a zero-check on :
- liquidityReceiver = _liquidityReceiver (#812)
MSTEPN.setFeeReceivers(address,address,address)._DevelopmentReceiver (#811) lacks a zero-check on :
- DevelopmentReceiver = _DevelopmentReceiver (#813)
MSTEPN.setFeeReceivers(address,address,address)._fmarketingValueReceiver (#811) lacks a zero-check on :
- fmarketingValueReceiver = _fmarketingValueReceiver (#814)
MSTEPN.clearStuckBalance(address)._receiver (#819) lacks a zero-check on :
- address(_receiver).transfer(balance) (#821)
Check that the address is not zero.

Additional information: link

Reentrancy in MSTEPN._transferFrom(address,address,uint256) (#510-558):
External calls:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
- router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
External calls sending eth:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
State variables written after the call(s):
- _rebase() (#550)
- _totalSupply = _totalSupply.sub(uint256(- supplyDelta)) (#739)
- _totalSupply = _totalSupply.add(uint256(supplyDelta)) (#741)
- _totalSupply = MAX_SUPPLY (#745)
- _rebase() (#550)
- nextRebase = epoch + rebaseFrequency (#750)
Reentrancy in MSTEPN.constructor() (#397-426):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#399)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),busdToken) (#400)
State variables written after the call(s):
- DevelopmentReceiver = msg.sender (#402)
- _allowedFragments[address(this)][address(router)] = uint256(- 1) (#404)
- _allowedFragments[address(this)][pair] = uint256(- 1) (#405)
- _allowedFragments[address(this)][address(this)] = uint256(- 1) (#406)
- _allowedFragments[address(this)][pairBusd] = uint256(- 1) (#407)
- _gonBalances[msg.sender] = TOTAL_GONS (#413)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (#414)
- _isFeeExempt[DevelopmentReceiver] = true (#416)
- _isFeeExempt[fmarketingValueReceiver] = true (#417)
- _isFeeExempt[address(this)] = true (#418)
- _isFeeExempt[msg.sender] = true (#419)
- setAutomatedMarketMakerPair(pair,true) (#409)
- _markerPairs.push(_pair) (#773)
- _markerPairs[i] = _markerPairs[_markerPairs.length - 1] (#778)
- _markerPairs.pop() (#779)
- setAutomatedMarketMakerPair(pairBusd,true) (#410)
- _markerPairs.push(_pair) (#773)
- _markerPairs[i] = _markerPairs[_markerPairs.length - 1] (#778)
- _markerPairs.pop() (#779)
- _totalSupply = INITIAL_FRAGMENTS_SUPPLY (#412)
- setAutomatedMarketMakerPair(pair,true) (#409)
- automatedMarketMakerPairs[_pair] = _value (#770)
- setAutomatedMarketMakerPair(pairBusd,true) (#410)
- automatedMarketMakerPairs[_pair] = _value (#770)
- fmarketingValueReceiver = msg.sender (#403)
- liquidityReceiver = msg.sender (#401)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in MSTEPN._swapAndLiquify(uint256) (#571-596):
External calls:
- _swapTokensForBNB(half,address(this)) (#578)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
- _addLiquidity(otherHalf,newBalance) (#582)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
External calls sending eth:
- _addLiquidity(otherHalf,newBalance) (#582)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#584)
Reentrancy in MSTEPN._swapAndLiquify(uint256) (#571-596):
External calls:
- _swapTokensForBusd(half,address(this)) (#588)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
- _addLiquidityBusd(otherHalf,newBalance_scope_1) (#592)
- router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
Event emitted after the call(s):
- SwapAndLiquifyBusd(half,newBalance_scope_1,otherHalf) (#594)
Reentrancy in MSTEPN._transferFrom(address,address,uint256) (#510-558):
External calls:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
- router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
External calls sending eth:
- swapBack() (#535)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
Event emitted after the call(s):
- LogRebase(epoch,_totalSupply) (#734)
- _rebase() (#550)
- LogRebase(epoch,_totalSupply) (#752)
- _rebase() (#550)
- Transfer(sender,address(this),feeAmount.div(_gonsPerFragment)) (#681)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#540)
- Transfer(sender,recipient,gonAmountReceived.div(_gonsPerFragment)) (#543-547)
Reentrancy in MSTEPN.constructor() (#397-426):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#399)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),busdToken) (#400)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(_pair,_value) (#785)
- setAutomatedMarketMakerPair(pairBusd,true) (#410)
- SetAutomatedMarketMakerPair(_pair,_value) (#785)
- setAutomatedMarketMakerPair(pair,true) (#409)
Reentrancy in MSTEPN.constructor() (#397-426):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#399)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),busdToken) (#400)
- IBEP20(busdToken).approve(address(router),uint256(- 1)) (#421)
- IBEP20(busdToken).approve(address(pairBusd),uint256(- 1)) (#422)
- IBEP20(busdToken).approve(address(this),uint256(- 1)) (#423)
Event emitted after the call(s):
- Transfer(address(0x0),msg.sender,_totalSupply) (#425)
Reentrancy in MSTEPN.swapBack() (#649-672):
External calls:
- _swapAndLiquify(amountToLiquify) (#660)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
- router.addLiquidity(address(this),busdToken,tokenAmount,busdAmount,0,0,liquidityReceiver,block.timestamp) (#609-618)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
- _swapTokensForBusd(amountToRFV,fmarketingValueReceiver) (#664)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#640-646)
- _swapTokensForBNB(amountToDevelopment,DevelopmentReceiver) (#668)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#626-632)
External calls sending eth:
- _swapAndLiquify(amountToLiquify) (#660)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,liquidityReceiver,block.timestamp) (#599-606)
Event emitted after the call(s):
- SwapBack(contractTokenBalance,amountToLiquify,amountToRFV,amountToDevelopment) (#671)
Apply the check-effects-interactions pattern.

Additional information: link

SafeMath.mod(uint256,uint256) (#109-112) is never used and should be removed
SafeMathInt.abs(int256) (#35-38) is never used and should be removed
SafeMathInt.add(int256,int256) (#29-33) is never used and should be removed
SafeMathInt.div(int256,int256) (#17-21) is never used and should be removed
SafeMathInt.mul(int256,int256) (#9-15) is never used and should be removed
SafeMathInt.sub(int256,int256) (#23-27) is never used and should be removed
Remove unused functions.

Additional information: link

MSTEPN.totalBuyFee (#359) is set pre-construction with a non-constant function or state variable:
- DevelopmentFee.add(buyFeemarketing)
MSTEPN.totalSellFee (#360) is set pre-construction with a non-constant function or state variable:
- totalBuyFee.add(sellFeeDevelopmentAdded).add(sellFeemarketingAdded)
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() (#171) is not in mixedCase
Struct MSTEPN.user (#375-379) is not in CapWords
Parameter MSTEPN.checkFeeExempt(address)._addr (#442) is not in mixedCase
Parameter MSTEPN.setAutomatedMarketMakerPair(address,bool)._pair (#767) is not in mixedCase
Parameter MSTEPN.setAutomatedMarketMakerPair(address,bool)._value (#767) is not in mixedCase
Parameter MSTEPN.setFeeExempt(address,bool)._addr (#790) is not in mixedCase
Parameter MSTEPN.setFeeExempt(address,bool)._value (#790) is not in mixedCase
Parameter MSTEPN.setTwentyFourhours(uint256)._time (#797) is not in mixedCase
Parameter MSTEPN.setSwapBackSettings(bool,uint256,uint256)._enabled (#806) is not in mixedCase
Parameter MSTEPN.setSwapBackSettings(bool,uint256,uint256)._num (#806) is not in mixedCase
Parameter MSTEPN.setSwapBackSettings(bool,uint256,uint256)._denom (#806) is not in mixedCase
Parameter MSTEPN.setFeeReceivers(address,address,address)._liquidityReceiver (#811) is not in mixedCase
Parameter MSTEPN.setFeeReceivers(address,address,address)._DevelopmentReceiver (#811) is not in mixedCase
Parameter MSTEPN.setFeeReceivers(address,address,address)._fmarketingValueReceiver (#811) is not in mixedCase
Parameter MSTEPN.clearStuckBalance(address)._receiver (#819) is not in mixedCase
Parameter MSTEPN.setAutoRebase(bool)._autoRebase (#828) is not in mixedCase
Parameter MSTEPN.setRebaseFrequency(uint256)._rebaseFrequency (#833) is not in mixedCase
Parameter MSTEPN.setRewardYield(uint256,uint256)._rewardYield (#838) is not in mixedCase
Parameter MSTEPN.setRewardYield(uint256,uint256)._rewardYieldDenominator (#838) is not in mixedCase
Parameter MSTEPN.setFeesOnNormalTransfers(bool)._enabled (#843) is not in mixedCase
Parameter MSTEPN.setIsLiquidityInBnb(bool)._value (#848) is not in mixedCase
Parameter MSTEPN.setNextRebase(uint256)._nextRebase (#853) is not in mixedCase
Variable MSTEPN._isFeeExempt (#331) is not in mixedCase
Variable MSTEPN._markerPairs (#332) is not in mixedCase
Variable MSTEPN.DEAD (#343) is not in mixedCase
Variable MSTEPN.ZERO (#344) is not in mixedCase
Variable MSTEPN.DevelopmentReceiver (#347) is not in mixedCase
Variable MSTEPN.DevelopmentFee (#355) is not in mixedCase
Variable MSTEPN.TwentyFourhours (#381) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#176) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#177)
Prevent variables from having similar names.

Additional information: link

MSTEPN.slitherConstructorVariables() (#314-865) uses literals with too many digits:
- rewardYieldDenominator = 10000000000 (#325)
MSTEPN.slitherConstructorVariables() (#314-865) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#343)
MSTEPN.slitherConstructorVariables() (#314-865) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#344)
MSTEPN.slitherConstructorConstantVariables() (#314-865) uses literals with too many digits:
- INITIAL_FRAGMENTS_SUPPLY = 3000000000 * 10 ** DECIMALS (#339)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

MSTEPN.DEAD (#343) should be constant
MSTEPN.DevelopmentFee (#355) should be constant
MSTEPN.ZERO (#344) should be constant
MSTEPN.busdToken (#349) should be constant
MSTEPN.buyFeemarketing (#356) should be constant
MSTEPN.feeDenominator (#361) should be constant
MSTEPN.maxSellTransactionAmount (#389) should be constant
MSTEPN.sellFeeDevelopmentAdded (#357) should be constant
MSTEPN.sellFeemarketingAdded (#358) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

name() should be declared external:
- BEP20Detailed.name() (#155-157)
symbol() should be declared external:
- BEP20Detailed.symbol() (#159-161)
decimals() should be declared external:
- BEP20Detailed.decimals() (#163-165)
owner() should be declared external:
- Ownable.owner() (#250-252)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#259-262)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#264-266)
addWhitelisted(address) should be declared external:
- WhitelistedRole.addWhitelisted(address) (#291-293)
removeWhitelisted(address) should be declared external:
- WhitelistedRole.removeWhitelisted(address) (#295-297)
renounceWhitelisted() should be declared external:
- WhitelistedRole.renounceWhitelisted() (#299-301)
Use the external attribute for functions never called from the contract.

Additional information: link

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

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.

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

Contract has 3% buy tax and 9% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.

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/project description on the website or on BscScan, CoinMarketCap

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 find audit link on the website

Unable to find whitepaper link on the website

Token is not listed at Mobula.Finance

Additional information: link

Unable to find token on CoinHunt

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Unable to verify token contract address on the website

Unable to find code repository for the project

Young tokens have high risks of scam / price dump / death

Token is marked as scam (rug pull, honeypot, phishing, etc.)

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Young tokens have high risks of scam / price dump / death

Young tokens have high risks of scam / price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank