EHB [EarnHub] Token

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

Contract creator or owner is blacklisted for past scams

EarnHub._swapBack() (#438-462) sends eth to arbitrary user
Dangerous calls:
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in EarnHub._transferFrom(address,address,uint256) (#336-391):
External calls:
- _swapBack() (#342)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- loyaltyTracker.getReferralData(_addr) (#517-531)
External calls sending eth:
- _swapBack() (#342)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
State variables written after the call(s):
- _balances[sender] -= amount (#361)
- _balances[recipient] += amountAfterFee (#362)
- amountAfterFee = _takeFee(sender,recipient,amount,transferType,referralBuyDiscount,referralSellDiscount) (#360)
- _balances[address(this)] += feeAmount (#427)
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.

Auth.transferOwnership(address).adr (#105) lacks a zero-check on :
- owner = adr (#106)
EarnHub.rescueSquad(address)._to (#611) lacks a zero-check on :
- (success) = _to.call{value: address(this).balance}() (#612)
Check that the address is not zero.

Additional information: link

Reentrancy in EarnHub._swapBack() (#438-462):
External calls:
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
External calls sending eth:
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
Event emitted after the call(s):
- GenericErrorEvent(_swapBack(): transferGateway.depositBNB() Failed) (#459)
- GenericErrorEvent(reason) (#460)
Reentrancy in EarnHub._transferFrom(address,address,uint256) (#336-391):
External calls:
- _swapBack() (#342)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- loyaltyTracker.getReferralData(_addr) (#517-531)
External calls sending eth:
- _swapBack() (#342)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
Event emitted after the call(s):
- GenericErrorEvent(getReferralData(): loyaltyTracker.getReferralData() Failed) (#524)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- GenericErrorEvent(reason) (#525)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- GenericErrorEvent(_transferFrom(): referralSellDiscount > baseSellFee) (#353)
- GenericErrorEvent(_transferFrom(): referralBuyDiscount > baseBuyFee) (#356)
- Transfer(_sender,address(this),feeAmount) (#428)
- amountAfterFee = _takeFee(sender,recipient,amount,transferType,referralBuyDiscount,referralSellDiscount) (#360)
Reentrancy in EarnHub._transferFrom(address,address,uint256) (#336-391):
External calls:
- _swapBack() (#342)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- loyaltyTracker.getReferralData(_addr) (#517-531)
- anyflect.setShares(sender,recipient,balancesSender,balancesRecipient) (#373-378)
External calls sending eth:
- _swapBack() (#342)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
Event emitted after the call(s):
- GenericErrorEvent(_transferFrom(): anyflect.setShares() Failed) (#376)
- GenericErrorEvent(reason) (#377)
Reentrancy in EarnHub._transferFrom(address,address,uint256) (#336-391):
External calls:
- _swapBack() (#342)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- loyaltyTracker.getReferralData(_addr) (#517-531)
- anyflect.setShares(sender,recipient,balancesSender,balancesRecipient) (#373-378)
- transferGateway.onTransfer(transf) (#382-387)
External calls sending eth:
- _swapBack() (#342)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
Event emitted after the call(s):
- GenericErrorEvent(_transferFrom(): transferGateway.onTransfer() Failed) (#385)
- GenericErrorEvent(reason_scope_0) (#386)
- Transfer(sender,recipient,amountAfterFee) (#389)
Reentrancy in EarnHub.constructor(address,ITransferGateway,string,string) (#305-327):
External calls:
- pair = IDEXFactory(router.factory()).createPair(router.WETH(),address(this)) (#319)
Event emitted after the call(s):
- Approval(msg.sender,spender,amount) (#646)
- approve(address(pair),_totalSupply) (#323)
- Approval(msg.sender,spender,amount) (#646)
- approve(_dexRouter,_totalSupply) (#322)
- Transfer(address(0),msg.sender,_totalSupply) (#326)
Reentrancy in EarnHub.getReferralData(address) (#515-535):
External calls:
- loyaltyTracker.getReferralData(_addr) (#517-531)
Event emitted after the call(s):
- GenericErrorEvent(getReferralData(): loyaltyTracker.getReferralData() Failed) (#524)
- GenericErrorEvent(reason) (#525)
Apply the check-effects-interactions pattern.

Additional information: link

EarnHub._takeFee(address,address,uint256,EarnHubLib.TransferType,uint256,uint256) (#422-432) uses timestamp for comparisons
Dangerous comparisons:
- feeAmount > 0 (#426)
EarnHub.getVariableSellFee() (#496-513) uses timestamp for comparisons
Dangerous comparisons:
- variableFeeStartingTimestamp > block.timestamp || variableFeeEndingTimestamp < block.timestamp (#500)
- variableFeeEndingTimestamp < block.timestamp (#501)
- variableFeeStartingTimestamp <= block.timestamp && block.timestamp <= variableFeeEndingTimestamp (#505)
Avoid relying on block.timestamp.

Additional information: link

Reentrancy in EarnHub.setAnyflect(IAnyflect) (#560-568):
External calls:
- anyflect.setExcludedFrom(pair,true) (#562)
- anyflect.setExcludedTo(pair,true) (#563)
- anyflect.setExcludedFrom(address(this),true) (#564)
- anyflect.setExcludedFrom(address(0),true) (#565)
- anyflect.setExcludedFrom(0x000000000000000000000000000000000000dEaD,true) (#566)
State variables written after the call(s):
- _authorize(address(anyflect)) (#567)
- authorizations[adr] = true (#79)
Apply the check-effects-interactions pattern.

Additional information: link

EarnHub._transferFrom(address,address,uint256).isReferral (#346) is a local variable never initialized
EarnHub._transferFrom(address,address,uint256).referralCount (#349) is a local variable never initialized
EarnHub.getReferralData(address).referralCount_scope_3 (#517) is a local variable never initialized
EarnHub.getReferralData(address).isReferral_scope_0 (#517) is a local variable never initialized
EarnHub._transferFrom(address,address,uint256).referralBuyDiscount (#347) is a local variable never initialized
EarnHub.getReferralData(address).referralBuyDiscount_scope_1 (#517) is a local variable never initialized
EarnHub._transferFrom(address,address,uint256).reason (#375) is a local variable never initialized
EarnHub._transferFrom(address,address,uint256).reason_scope_0 (#384) is a local variable never initialized
EarnHub._transferFrom(address,address,uint256).referralSellDiscount (#348) is a local variable never initialized
EarnHub._swapBack().reason (#458) is a local variable never initialized
EarnHub.getReferralData(address).reason (#523) is a local variable never initialized
EarnHub.getReferralData(address).referralSellDiscount_scope_2 (#517) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

EarnHub.getReferralData(address) (#515-535) ignores return value by loyaltyTracker.getReferralData(_addr) (#517-531)
Ensure that all the return values of the function calls are used.

Additional information: link

EarnHub.constructor(address,ITransferGateway,string,string)._name (#305) shadows:
- EarnHub._name (#273) (state variable)
EarnHub.constructor(address,ITransferGateway,string,string)._symbol (#305) shadows:
- EarnHub._symbol (#274) (state variable)
Rename the local variables that shadow another component.

Additional information: link

EarnHub.setVariableSellFeeParams(uint256,bool,uint256,uint256) (#539-546) should emit an event for:
- maxSellFee = _maxSellFee (#543)
- variableFeeEndingTimestamp = _endingTimestamp (#545)
- variableFeeStartingTimestamp = block.timestamp (#544)
- variableFeeStartingTimestamp = _startingTimestamp (#544)
EarnHub.setNewBaseFees(uint256,uint256,uint256) (#548-553) should emit an event for:
- baseSellFee = _newBaseSellFee (#550)
- transferFee = _newTransferFee (#551)
- baseBuyFee = _newBaseBuyFee (#552)
EarnHub.setSwapThreshold(uint256) (#595-597) should emit an event for:
- _swapThreshold = _amount (#596)
Emit an event for critical parameter changes.

Additional information: link

Variable 'EarnHub._transferFrom(address,address,uint256).reason_scope_0 (#384)' in EarnHub._transferFrom(address,address,uint256) (#336-391) potentially used before declaration: GenericErrorEvent(reason_scope_0) (#386)
Variable 'EarnHub._transferFrom(address,address,uint256).reason (#375)' in EarnHub._transferFrom(address,address,uint256) (#336-391) potentially used before declaration: GenericErrorEvent(reason) (#377)
Variable 'EarnHub._swapBack().reason (#458)' in EarnHub._swapBack() (#438-462) potentially used before declaration: GenericErrorEvent(reason) (#460)
Variable 'EarnHub.getReferralData(address).isReferral_scope_0 (#517)' in EarnHub.getReferralData(address) (#515-535) potentially used before declaration: isReferral_scope_0 = isReferral_scope_0 (#518)
Variable 'EarnHub.getReferralData(address).referralBuyDiscount_scope_1 (#517)' in EarnHub.getReferralData(address) (#515-535) potentially used before declaration: referralBuyDiscount_scope_1 = referralBuyDiscount_scope_1 (#519)
Variable 'EarnHub.getReferralData(address).referralSellDiscount_scope_2 (#517)' in EarnHub.getReferralData(address) (#515-535) potentially used before declaration: referralSellDiscount_scope_2 = referralSellDiscount_scope_2 (#520)
Variable 'EarnHub.getReferralData(address).referralCount_scope_3 (#517)' in EarnHub.getReferralData(address) (#515-535) potentially used before declaration: referralCount_scope_3 = referralCount_scope_3 (#521)
Variable 'EarnHub.getReferralData(address).reason (#523)' in EarnHub.getReferralData(address) (#515-535) potentially used before declaration: GenericErrorEvent(reason) (#525)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in EarnHub._transferFrom(address,address,uint256) (#336-391):
External calls:
- _swapBack() (#342)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#446-452)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
- (isReferral,referralBuyDiscount,referralSellDiscount,referralCount) = getReferralData(sender) (#351)
- loyaltyTracker.getReferralData(_addr) (#517-531)
External calls sending eth:
- _swapBack() (#342)
- transferGateway.depositBNB{value: amountBNB}() (#456-461)
State variables written after the call(s):
- amountAfterFee = _takeFee(sender,recipient,amount,transferType,referralBuyDiscount,referralSellDiscount) (#360)
- currentSellFee = baseSellFee (#503)
- currentSellFee = sellFee (#509)
- amountAfterFee = _takeFee(sender,recipient,amount,transferType,referralBuyDiscount,referralSellDiscount) (#360)
- maxSellFee = 0 (#501)
- user = _createOrUpdateUser(address(sender),block.timestamp,isReferral,referralBuyDiscount,referralSellDiscount,referralCount) (#364)
- users[_addr] = user (#396)
Reentrancy in EarnHub.constructor(address,ITransferGateway,string,string) (#305-327):
External calls:
- pair = IDEXFactory(router.factory()).createPair(router.WETH(),address(this)) (#319)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = _totalSupply (#321)
- approve(_dexRouter,_totalSupply) (#322)
- _allowances[msg.sender][spender] = amount (#645)
- approve(address(pair),_totalSupply) (#323)
- _allowances[msg.sender][spender] = amount (#645)
- _balances[msg.sender] = _totalSupply (#325)
- liquidityPairs[pair] = true (#320)
Apply the check-effects-interactions pattern.

Additional information: link

EarnHub.currentSellFee (#257) is set pre-construction with a non-constant function or state variable:
- baseSellFee
EarnHub._maxTxAmount (#277) 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

Pragma version^0.8.0 (#2) allows old versions
solc-0.8.0 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 EarnHub.rescueSquad(address) (#611-614):
- (success) = _to.call{value: address(this).balance}() (#612)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IDEXRouter.WETH() (#160) is not in mixedCase
Parameter EarnHub.getLiquidityBacking(uint256)._accuracy (#470) is not in mixedCase
Parameter EarnHub.isOverLiquified(uint256,uint256)._target (#474) is not in mixedCase
Parameter EarnHub.isOverLiquified(uint256,uint256)._accuracy (#474) is not in mixedCase
Parameter EarnHub.getTotalFee(EarnHubLib.TransferType,uint256,uint256)._transferType (#478) is not in mixedCase
Parameter EarnHub.getTotalFee(EarnHubLib.TransferType,uint256,uint256)._referralBuyDiscount (#478) is not in mixedCase
Parameter EarnHub.getTotalFee(EarnHubLib.TransferType,uint256,uint256)._referralSellDiscount (#478) is not in mixedCase
Parameter EarnHub.getReferralData(address)._addr (#515) is not in mixedCase
Parameter EarnHub.setVariableSellFeeParams(uint256,bool,uint256,uint256)._maxSellFee (#539) is not in mixedCase
Parameter EarnHub.setVariableSellFeeParams(uint256,bool,uint256,uint256)._useCurrentTimestampForStart (#539) is not in mixedCase
Parameter EarnHub.setVariableSellFeeParams(uint256,bool,uint256,uint256)._startingTimestamp (#539) is not in mixedCase
Parameter EarnHub.setVariableSellFeeParams(uint256,bool,uint256,uint256)._endingTimestamp (#539) is not in mixedCase
Parameter EarnHub.setNewBaseFees(uint256,uint256,uint256)._newBaseSellFee (#548) is not in mixedCase
Parameter EarnHub.setNewBaseFees(uint256,uint256,uint256)._newTransferFee (#548) is not in mixedCase
Parameter EarnHub.setNewBaseFees(uint256,uint256,uint256)._newBaseBuyFee (#548) is not in mixedCase
Parameter EarnHub.setTransferGateway(ITransferGateway)._transferGateway (#555) is not in mixedCase
Parameter EarnHub.setAnyflect(IAnyflect)._anyflect (#560) is not in mixedCase
Parameter EarnHub.setDexRouter(IDEXRouter)._router (#570) is not in mixedCase
Parameter EarnHub.setLoyaltyTracker(ILoyaltyTracker)._loyaltyTracker (#574) is not in mixedCase
Parameter EarnHub.setTxLimit(uint256)._amount (#579) is not in mixedCase
Parameter EarnHub.setIsFeeExempt(address,bool)._addr (#583) is not in mixedCase
Parameter EarnHub.setIsFeeExempt(address,bool)._exempt (#583) is not in mixedCase
Parameter EarnHub.setIsTxLimitExempt(address,bool)._addr (#587) is not in mixedCase
Parameter EarnHub.setIsTxLimitExempt(address,bool)._exempt (#587) is not in mixedCase
Parameter EarnHub.setLiquidityPair(address,bool)._pair (#591) is not in mixedCase
Parameter EarnHub.setLiquidityPair(address,bool)._value (#591) is not in mixedCase
Parameter EarnHub.setSwapThreshold(uint256)._amount (#595) is not in mixedCase
Parameter EarnHub.setAnyflectExempt(address,bool)._addr (#599) is not in mixedCase
Parameter EarnHub.setAnyflectExempt(address,bool)._value (#599) is not in mixedCase
Parameter EarnHub.setPresaleContract(address,bool)._addr (#603) is not in mixedCase
Parameter EarnHub.setPresaleContract(address,bool)._value (#603) is not in mixedCase
Parameter EarnHub.setBasicTransfer(address,bool)._addr (#607) is not in mixedCase
Parameter EarnHub.setBasicTransfer(address,bool)._value (#607) is not in mixedCase
Parameter EarnHub.rescueSquad(address)._to (#611) is not in mixedCase
Parameter EarnHub.fuckShitcoins(IBEP20,address[],address)._shitcoin (#617) is not in mixedCase
Parameter EarnHub.fuckShitcoins(IBEP20,address[],address)._path (#617) is not in mixedCase
Parameter EarnHub.fuckShitcoins(IBEP20,address[],address)._to (#617) is not in mixedCase
Constant EarnHub._name (#273) is not in UPPER_CASE_WITH_UNDERSCORES
Constant EarnHub._symbol (#274) is not in UPPER_CASE_WITH_UNDERSCORES
Constant EarnHub._decimals (#275) is not in UPPER_CASE_WITH_UNDERSCORES
Variable EarnHub._totalSupply (#276) is not in mixedCase
Variable EarnHub._maxTxAmount (#277) is not in mixedCase
Variable EarnHub._swapThreshold (#278) is not in mixedCase
Variable EarnHub._balances (#280) is not in mixedCase
Variable EarnHub._allowances (#281) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#165) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#166)
Prevent variables from having similar names.

Additional information: link

EarnHub.setAnyflect(IAnyflect) (#560-568) uses literals with too many digits:
- anyflect.setExcludedFrom(0x000000000000000000000000000000000000dEaD,true) (#566)
EarnHub.slitherConstructorVariables() (#249-658) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#253)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

EarnHub._totalSupply (#276) should be constant
EarnHub.deadAddress (#253) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

unauthorize(address) should be declared external:
- Auth.unauthorize(address) (#84-86)
transferOwnership(address) should be declared external:
- Auth.transferOwnership(address) (#105-109)
isOverLiquified(uint256,uint256) should be declared external:
- EarnHub.isOverLiquified(uint256,uint256) (#474-476)
Use the external attribute for functions never called from the contract.

Additional information: link

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 11% buy tax and 0% sell tax.
Taxes are high (over 10%) but contract ownership is renounced.

Swap operations require suspiciously high gas. Contract logic is complex and may disguise some form of scam.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to crawl data from the website

BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link

Unable to find token/project description on the website or on BscScan, CoinMarketCap

Unable to find token contract audit

Unable to find audit link on the website

Unable to find whitepaper link on the website

Unable to find Telegram link on the website

Unable to find Twitter link on the website

Unable to find code repository for the project

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

Additional information: link

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 price dump / death

Token has relatively low CoinGecko rank

Token has relatively low CoinMarketCap rank