GROOV is an auto-staking protocol that rewards it’s users every 15 minutes - (96 times in a day) with the Powerful fixed APY in the Defi space of 383,000%. Our team has been verified by Auditrate.tech our smart contract has also been audited by Auditrate.tech
Contract creator or owner is blacklisted for past scams
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
Groov.swapBack() (#683-721) sends eth to arbitrary user
Dangerous calls:
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in Groov._transferFrom(address,address,uint256) (#569-608):
External calls:
- rebase() (#581)
- pairContract.sync() (#528)
- addLiquidity() (#585)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#660-666)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
- swapBack() (#589)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#697-703)
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
External calls sending eth:
- addLiquidity() (#585)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
- swapBack() (#589)
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
State variables written after the call(s):
- _gonBalances[sender] = _gonBalances[sender].sub(gonAmount) (#593)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonAmountReceived) (#597-599)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#594-596)
- _gonBalances[firePit] = _gonBalances[firePit].add(gonAmount.div(feeDenominator).mul(firePitFee)) (#625-627)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(gonAmount.div(feeDenominator).mul(_treasuryFee.add(groovInsuranceFundFee))) (#628-630)
- _gonBalances[autoLiquidityReceiver] = _gonBalances[autoLiquidityReceiver].add(gonAmount.div(feeDenominator).mul(liquidityFee)) (#631-633)
- swapBack() (#589)
- inSwap = true (#447)
- inSwap = false (#449)
Apply the check-effects-interactions pattern.
Additional information: link
Groov._name (#404) shadows:
- ERC20Detailed._name (#370)
Groov._symbol (#405) shadows:
- ERC20Detailed._symbol (#371)
Groov._decimals (#406) shadows:
- ERC20Detailed._decimals (#372)
Remove the state variable shadowing.
Additional information: link
Too many vulnerabilities (Unchecked transfer, Reentrancy vulnerability, etc.). High risk of a scam. DYOR & manual audit are advised.
Contract ownership is not renounced (belongs to a wallet)
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.
Groov.swapBack().success (#709) is written in both
(success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
(success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
Fix or remove the writes.
Additional information: link
Low level call in Groov.swapBack() (#683-721):
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Groov.rebase().rebaseRate (#503) 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
SafeMathInt.MAX_INT256 (#9) is never used in SafeMathInt (#7-41)
Remove unused state variables.
Additional information: link
Groov.rebase() (#500-531) performs a multiplication on the result of a division:
-times = deltaTime.div(900) (#506)
-epoch = times.mul(15) (#507)
Groov.rebase() (#500-531) performs a multiplication on the result of a division:
-times = deltaTime.div(900) (#506)
-_lastRebasedTime = _lastRebasedTime.add(times.mul(900)) (#526)
Groov.takeFee(address,address,uint256) (#610-637) performs a multiplication on the result of a division:
-feeAmount = gonAmount.div(feeDenominator).mul(_totalFee) (#623)
Groov.takeFee(address,address,uint256) (#610-637) performs a multiplication on the result of a division:
-_gonBalances[firePit] = _gonBalances[firePit].add(gonAmount.div(feeDenominator).mul(firePitFee)) (#625-627)
Groov.takeFee(address,address,uint256) (#610-637) performs a multiplication on the result of a division:
-_gonBalances[address(this)] = _gonBalances[address(this)].add(gonAmount.div(feeDenominator).mul(_treasuryFee.add(groovInsuranceFundFee))) (#628-630)
Groov.takeFee(address,address,uint256) (#610-637) performs a multiplication on the result of a division:
-_gonBalances[autoLiquidityReceiver] = _gonBalances[autoLiquidityReceiver].add(gonAmount.div(feeDenominator).mul(liquidityFee)) (#631-633)
Groov.getLiquidityBacking(uint256) (#878-886) performs a multiplication on the result of a division:
-liquidityBalance = _gonBalances[pair].div(_gonsPerFragment) (#883)
-accuracy.mul(liquidityBalance.mul(2)).div(getCirculatingSupply()) (#884-885)
Consider ordering multiplication before division.
Additional information: link
Groov.addLiquidity() (#639-681) ignores return value by router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
Ensure that all the return values of the function calls are used.
Additional information: link
Groov.setFeeReceivers(address,address,address,address)._autoLiquidityReceiver (#867) lacks a zero-check on :
- autoLiquidityReceiver = _autoLiquidityReceiver (#872)
Groov.setFeeReceivers(address,address,address,address)._treasuryReceiver (#868) lacks a zero-check on :
- treasuryReceiver = _treasuryReceiver (#873)
Groov.setFeeReceivers(address,address,address,address)._groovInsuranceFundReceiver (#869) lacks a zero-check on :
- groovInsuranceFundReceiver = _groovInsuranceFundReceiver (#874)
Groov.setFeeReceivers(address,address,address,address)._firePit (#870) lacks a zero-check on :
- firePit = _firePit (#875)
Groov.setPairAddress(address)._pairAddress (#897) lacks a zero-check on :
- pairAddress = _pairAddress (#898)
Check that the address is not zero.
Additional information: link
Reentrancy in Groov.addLiquidity() (#639-681):
External calls:
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#660-666)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
External calls sending eth:
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
State variables written after the call(s):
- _lastAddLiquidityTime = block.timestamp (#680)
Reentrancy in Groov.constructor() (#469-498):
External calls:
- pair = IPancakeSwapFactory(router.factory()).createPair(router.WETH(),address(this)) (#472-475)
State variables written after the call(s):
- _allowedFragments[address(this)][address(router)] = uint256(- 1) (#482)
- _autoAddLiquidity = true (#492)
- _autoRebase = true (#491)
- _gonBalances[treasuryReceiver] = TOTAL_GONS (#487)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (#488)
- _initRebaseStartTime = block.timestamp (#489)
- _isFeeExempt[treasuryReceiver] = true (#493)
- _isFeeExempt[address(this)] = true (#494)
- _lastRebasedTime = block.timestamp (#490)
- _transferOwnership(treasuryReceiver) (#496)
- _owner = newOwner (#365)
- _totalSupply = INITIAL_FRAGMENTS_SUPPLY (#486)
- autoLiquidityReceiver = 0x8F87B8eB7cC38b797982A4e0b7Af1Bd8FFEEd800 (#477)
- firePit = 0x8F87B8eB7cC38b797982A4e0b7Af1Bd8FFEEd800 (#480)
- groovInsuranceFundReceiver = 0x8F87B8eB7cC38b797982A4e0b7Af1Bd8FFEEd800 (#479)
- pairAddress = pair (#483)
- pairContract = IPancakeSwapPair(pair) (#484)
- treasuryReceiver = 0x8F87B8eB7cC38b797982A4e0b7Af1Bd8FFEEd800 (#478)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in Groov._transferFrom(address,address,uint256) (#569-608):
External calls:
- rebase() (#581)
- pairContract.sync() (#528)
- addLiquidity() (#585)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#660-666)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
- swapBack() (#589)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#697-703)
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
External calls sending eth:
- addLiquidity() (#585)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#671-678)
- swapBack() (#589)
- (success) = address(treasuryReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(treasuryFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#709-714)
- (success,None) = address(groovInsuranceFundReceiver).call{gas: 30000,value: amountETHToTreasuryAndSIF.mul(groovInsuranceFundFee).div(treasuryFee.add(groovInsuranceFundFee))}() (#715-720)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount.div(_gonsPerFragment)) (#635)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#594-596)
- Transfer(sender,recipient,gonAmountReceived.div(_gonsPerFragment)) (#602-606)
Reentrancy in Groov.constructor() (#469-498):
External calls:
- pair = IPancakeSwapFactory(router.factory()).createPair(router.WETH(),address(this)) (#472-475)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (#364)
- _transferOwnership(treasuryReceiver) (#496)
- Transfer(address(0x0),treasuryReceiver,_totalSupply) (#497)
Reentrancy in Groov.rebase() (#500-531):
External calls:
- pairContract.sync() (#528)
Event emitted after the call(s):
- LogRebase(epoch,_totalSupply) (#530)
Apply the check-effects-interactions pattern.
Additional information: link
Groov.rebase() (#500-531) uses timestamp for comparisons
Dangerous comparisons:
- deltaTimeFromInit < (31536000) (#509)
- deltaTimeFromInit >= (31536000) (#511)
- deltaTimeFromInit >= ((15 * 31536000) / 10) (#513)
- deltaTimeFromInit >= (7 * 31536000) (#515)
- i < times (#519)
Groov.shouldRebase() (#752-759) uses timestamp for comparisons
Dangerous comparisons:
- _autoRebase && (_totalSupply < MAX_SUPPLY) && msg.sender != pair && ! inSwap && block.timestamp >= (_lastRebasedTime + 900) (#753-758)
Groov.shouldAddLiquidity() (#761-767) uses timestamp for comparisons
Dangerous comparisons:
- _autoAddLiquidity && ! inSwap && msg.sender != pair && block.timestamp >= (_lastAddLiquidityTime + 172800) (#762-766)
Avoid relying on block.timestamp.
Additional information: link
Groov.isContract(address) (#913-917) uses assembly
- INLINE ASM (#915)
Do not use evm assembly.
Additional information: link
SafeMath.mod(uint256,uint256) (#92-95) is never used and should be removed
SafeMathInt.abs(int256) (#37-40) is never used and should be removed
SafeMathInt.add(int256,int256) (#31-35) is never used and should be removed
SafeMathInt.div(int256,int256) (#19-23) is never used and should be removed
SafeMathInt.mul(int256,int256) (#11-17) is never used and should be removed
SafeMathInt.sub(int256,int256) (#25-29) is never used and should be removed
Remove unused functions.
Additional information: link
Groov.totalFee (#428-431) is set pre-construction with a non-constant function or state variable:
- liquidityFee.add(treasuryFee).add(groovInsuranceFundFee).add(firePitFee)
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^0.7.4 (#5) allows old versions
solc-0.7.4 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
Function IPancakeSwapPair.DOMAIN_SEPARATOR() (#142) is not in mixedCase
Function IPancakeSwapPair.PERMIT_TYPEHASH() (#143) is not in mixedCase
Function IPancakeSwapPair.MINIMUM_LIQUIDITY() (#160) is not in mixedCase
Function IPancakeSwapRouter.WETH() (#180) is not in mixedCase
Parameter Groov.setAutoRebase(bool)._flag (#775) is not in mixedCase
Parameter Groov.setAutoAddLiquidity(bool)._flag (#784) is not in mixedCase
Parameter Groov.checkFeeExempt(address)._addr (#847) is not in mixedCase
Parameter Groov.setFeeReceivers(address,address,address,address)._autoLiquidityReceiver (#867) is not in mixedCase
Parameter Groov.setFeeReceivers(address,address,address,address)._treasuryReceiver (#868) is not in mixedCase
Parameter Groov.setFeeReceivers(address,address,address,address)._groovInsuranceFundReceiver (#869) is not in mixedCase
Parameter Groov.setFeeReceivers(address,address,address,address)._firePit (#870) is not in mixedCase
Parameter Groov.setWhitelist(address)._addr (#888) is not in mixedCase
Parameter Groov.setBotBlacklist(address,bool)._botAddress (#892) is not in mixedCase
Parameter Groov.setBotBlacklist(address,bool)._flag (#892) is not in mixedCase
Parameter Groov.setPairAddress(address)._pairAddress (#897) is not in mixedCase
Parameter Groov.setLP(address)._address (#901) is not in mixedCase
Variable Groov._name (#404) is not in mixedCase
Variable Groov._symbol (#405) is not in mixedCase
Variable Groov._decimals (#406) is not in mixedCase
Variable Groov._isFeeExempt (#409) is not in mixedCase
Variable Groov.DEAD (#434) is not in mixedCase
Variable Groov.ZERO (#435) is not in mixedCase
Variable Groov._autoRebase (#457) is not in mixedCase
Variable Groov._autoAddLiquidity (#458) is not in mixedCase
Variable Groov._initRebaseStartTime (#459) is not in mixedCase
Variable Groov._lastRebasedTime (#460) is not in mixedCase
Variable Groov._lastAddLiquidityTime (#461) is not in mixedCase
Variable Groov._totalSupply (#462) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Variable IPancakeSwapRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#185) is too similar to IPancakeSwapRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#186)
Prevent variables from having similar names.
Additional information: link
Groov.slitherConstructorVariables() (#397-921) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#434)
Groov.slitherConstructorVariables() (#397-921) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#435)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
Groov.DEAD (#434) should be constant
Groov.ZERO (#435) should be constant
Groov._decimals (#406) should be constant
Groov._name (#404) should be constant
Groov._symbol (#405) should be constant
Groov.feeDenominator (#432) should be constant
Groov.firePitFee (#427) should be constant
Groov.groovInsuranceFundFee (#425) should be constant
Groov.liquidityFee (#423) should be constant
Groov.sellFee (#426) should be constant
Groov.swapEnabled (#442) should be constant
Groov.treasuryFee (#424) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#353-356)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#358-360)
name() should be declared external:
- ERC20Detailed.name() (#384-386)
symbol() should be declared external:
- ERC20Detailed.symbol() (#388-390)
decimals() should be declared external:
- ERC20Detailed.decimals() (#392-394)
getLiquidityBacking(uint256) should be declared external:
- Groov.getLiquidityBacking(uint256) (#878-886)
setPairAddress(address) should be declared external:
- Groov.setPairAddress(address) (#897-899)
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.
Contract has 14% buy tax and 40% sell tax.
Taxes are extremely high (over 30%)
Additional information: link
Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.
Swap operations require suspiciously high gas. Contract logic is complex and may disguise some form of scam.
Average 30d PancakeSwap volume is low.
Average 30d number of PancakeSwap swaps is low.
Token is deployed only at one blockchain
Token has only one trading pair
Unable to find token on CoinGecko
Additional information: link
Unable to find token on CoinMarketCap
Additional information: link
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 verify that token and website are owned by the same team (no listings + unable to find contract on website)
Unable to verify token contract address on the website
Unable to find audit link on the website
Unable to find token on CoinHunt
Additional information: link
Unable to find code repository for the project
Token is not listed at Mobula.Finance
Additional information: link
Young tokens have high risks of scam / price dump / death
Token is marked as scam (rug pull, honeypot, phishing, etc.)
Additional information: link
Young tokens have high risks of scam / price dump / death
Token has no active CoinGecko listing / rank
Token has no active CoinMarketCap listing / rank
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account
Unable to find Discord account
Twitter account has few posts