NUT [Nut2Earn] Token

Reentrancy in Nut2Earn._transferFrom(address,address,uint256) (#540-582):
External calls:
- swapBack() (#556)
- router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
External calls sending eth:
- swapBack() (#556)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
State variables written after the call(s):
- _gonBalances[sender] = _gonBalances[sender].sub(gonAmount) (#559)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonAmountReceived) (#562)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#561)
- _gonBalances[UplineAddressBuyer] = _gonBalances[UplineAddressBuyer].add(_uplineBuyerReward) (#722-724)
- _gonBalances[UplineAddress] = _gonBalances[UplineAddress].add(_uplineReward) (#735-737)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(feeAmount) (#742)
- _rebase() (#573)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (#806)
Apply the check-effects-interactions pattern.

Additional information: link

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

Contract ownership is not renounced (belongs to a wallet)

Nut2Earn.manualSync() (#519-523) has external calls inside a loop: InterfaceLP(markerPairs[i]).sync() (#521)
Favor pull over push strategy for external calls.

Additional information: link

Nut2Earn.constructor() (#424-451) ignores return value by IERC20(BUSD_TOKEN).approve(address(router),uint256(- 1)) (#446)
Nut2Earn.constructor() (#424-451) ignores return value by IERC20(BUSD_TOKEN).approve(address(pairBusd),uint256(- 1)) (#447)
Nut2Earn.constructor() (#424-451) ignores return value by IERC20(BUSD_TOKEN).approve(address(this),uint256(- 1)) (#448)
Nut2Earn.getLiquidityBacking(uint256) (#507-513) ignores return value by liquidityBalance.add(balanceOf(markerPairs[i]).div(10 ** 9)) (#510)
Nut2Earn._addLiquidity(uint256,uint256) (#622-631) ignores return value by router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
Nut2Earn._addLiquidityBusd(uint256,uint256) (#633-644) ignores return value by router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
Ensure that all the return values of the function calls are used.

Additional information: link

Nut2Earn.setFeeReceivers(address,address,address,address).setnutliquidityReceiver (#861) lacks a zero-check on :
- nutliquidityReceiver = setnutliquidityReceiver (#862)
Nut2Earn.setFeeReceivers(address,address,address,address).setyieldtoptreasuryReceiver (#861) lacks a zero-check on :
- yieldtoptreasuryReceiver = setyieldtoptreasuryReceiver (#863)
Nut2Earn.setFeeReceivers(address,address,address,address).setnuttreasuryreservesReceiver (#861) lacks a zero-check on :
- nuttreasuryreservesReceiver = setnuttreasuryreservesReceiver (#864)
Nut2Earn.setFeeReceivers(address,address,address,address).setnutfirepitReceiver (#861) lacks a zero-check on :
- nutfirepitReceiver = setnutfirepitReceiver (#865)
Check that the address is not zero.

Additional information: link

Reentrancy in Nut2Earn._transferFrom(address,address,uint256) (#540-582):
External calls:
- swapBack() (#556)
- router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
External calls sending eth:
- swapBack() (#556)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
State variables written after the call(s):
- _rebase() (#573)
- _totalSupply = _totalSupply.add(uint256(supplyDelta)) (#803)
- _rebase() (#573)
- autoRebase = false (#799)
- _rebase() (#573)
- nextRebase = epoch + rebaseFrequency (#807)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#561)
- referralTotalFeeReceived[receiver] += amount (#379)
Reentrancy in Nut2Earn.constructor() (#424-451):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#426)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),BUSD_TOKEN) (#427)
State variables written after the call(s):
- _allowedFragments[address(this)][address(router)] = uint256(- 1) (#429)
- _allowedFragments[address(this)][pair] = uint256(- 1) (#430)
- _allowedFragments[address(this)][address(this)] = uint256(- 1) (#431)
- _allowedFragments[address(this)][pairBusd] = uint256(- 1) (#432)
- _gonBalances[msg.sender] = TOTAL_GONS (#438)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (#439)
- _totalSupply = INITIAL_FRAGMENTS_SUPPLY (#437)
- setAutomatedMarketMakerPair(pair,true) (#434)
- automatedMarketMakerPairs[enterPair] = enterValue (#826)
- setAutomatedMarketMakerPair(pairBusd,true) (#435)
- automatedMarketMakerPairs[enterPair] = enterValue (#826)
- isFeeExempt[yieldtoptreasuryReceiver] = true (#441)
- isFeeExempt[nuttreasuryreservesReceiver] = true (#442)
- isFeeExempt[address(this)] = true (#443)
- isFeeExempt[msg.sender] = true (#444)
- setAutomatedMarketMakerPair(pair,true) (#434)
- markerPairs.push(enterPair) (#829)
- markerPairs[i] = markerPairs[markerPairs.length - 1] (#834)
- markerPairs.pop() (#835)
- setAutomatedMarketMakerPair(pairBusd,true) (#435)
- markerPairs.push(enterPair) (#829)
- markerPairs[i] = markerPairs[markerPairs.length - 1] (#834)
- markerPairs.pop() (#835)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Nut2Earn._swapAndLiquify(uint256) (#595-620):
External calls:
- _swapTokensForBNB(half,address(this)) (#602)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- _addLiquidity(otherHalf,newBalance) (#606)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
External calls sending eth:
- _addLiquidity(otherHalf,newBalance) (#606)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#608)
Reentrancy in Nut2Earn._swapAndLiquify(uint256) (#595-620):
External calls:
- _swapTokensForBusd(half,address(this)) (#612)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
- _addLiquidityBusd(otherHalf,newBalance_scope_1) (#616)
- router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
Event emitted after the call(s):
- SwapAndLiquifyBusd(half,newBalance_scope_1,otherHalf) (#618)
Reentrancy in Nut2Earn._transferFrom(address,address,uint256) (#540-582):
External calls:
- swapBack() (#556)
- router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
External calls sending eth:
- swapBack() (#556)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
Event emitted after the call(s):
- LogRebase(epoch,_totalSupply) (#794)
- _rebase() (#573)
- LogRebase(epoch,_totalSupply) (#800)
- _rebase() (#573)
- LogRebase(epoch,_totalSupply) (#808)
- _rebase() (#573)
- Transfer(sender,recipient,gonAmountReceived.div(_gonsPerFragment)) (#564-568)
- Transfer(sender,address(this),feeAmount.div(_gonsPerFragment)) (#743)
- gonAmountReceived = takeFee(sender,recipient,gonAmount) (#561)
Reentrancy in Nut2Earn.constructor() (#424-451):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#426)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),BUSD_TOKEN) (#427)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(enterPair,enterValue) (#841)
- setAutomatedMarketMakerPair(pairBusd,true) (#435)
- SetAutomatedMarketMakerPair(enterPair,enterValue) (#841)
- setAutomatedMarketMakerPair(pair,true) (#434)
Reentrancy in Nut2Earn.constructor() (#424-451):
External calls:
- pair = IDEXFactory(router.factory()).createPair(address(this),router.WETH()) (#426)
- pairBusd = IDEXFactory(router.factory()).createPair(address(this),BUSD_TOKEN) (#427)
- IERC20(BUSD_TOKEN).approve(address(router),uint256(- 1)) (#446)
- IERC20(BUSD_TOKEN).approve(address(pairBusd),uint256(- 1)) (#447)
- IERC20(BUSD_TOKEN).approve(address(this),uint256(- 1)) (#448)
Event emitted after the call(s):
- Transfer(address(0x0),msg.sender,_totalSupply) (#450)
Reentrancy in Nut2Earn.swapBack() (#675-706):
External calls:
- _swapAndLiquify(amountToLiquify) (#690)
- router.addLiquidity(address(this),BUSD_TOKEN,tokenAmount,busdAmount,0,0,nutliquidityReceiver,block.timestamp) (#634-643)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
- _swapTokensForBusd(amountToYieldTop,nuttreasuryreservesReceiver) (#694)
- router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#666-672)
- _swapTokensForBNB(amountToTreasury,yieldtoptreasuryReceiver) (#698)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
- _swapTokensForBNB(amountToFirepit,nutfirepitReceiver) (#702)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,receiver,block.timestamp) (#651-657)
External calls sending eth:
- _swapAndLiquify(amountToLiquify) (#690)
- router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,nutliquidityReceiver,block.timestamp) (#623-630)
Event emitted after the call(s):
- SwapBack(contractTokenBalance,amountToLiquify,amountToYieldTop,amountToTreasury,amountToFirepit) (#705)
Apply the check-effects-interactions pattern.

Additional information: link

Nut2Earn.shouldRebase() (#483-485) uses timestamp for comparisons
Dangerous comparisons:
- nextRebase <= block.timestamp (#484)
Nut2Earn._transferFrom(address,address,uint256) (#540-582) uses timestamp for comparisons
Dangerous comparisons:
- shouldRebase() && autoRebase (#572)
Nut2Earn.manualRebase() (#812-821) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(nextRebase <= block.timestamp,Not in time) (#814)
Avoid relying on block.timestamp.

Additional information: link

Nut2Earn.setAutomatedMarketMakerPair(address,bool) (#823-842) has costly operations inside a loop:
- markerPairs.pop() (#835)
Use a local variable to hold the loop computation result.

Additional information: link

SafeMath.mod(uint256,uint256) (#134-137) is never used and should be removed
SafeMathInt.add(int256,int256) (#56-60) is never used and should be removed
SafeMathInt.div(int256,int256) (#44-48) is never used and should be removed
SafeMathInt.mul(int256,int256) (#36-42) is never used and should be removed
SafeMathInt.sub(int256,int256) (#50-54) is never used and should be removed
Remove unused functions.

Additional information: link

Nut2Earn.totalBuyFee (#307) is set pre-construction with a non-constant function or state variable:
- buyliquidityFee.add(buyyieldFee).add(buytreasuryFee).add(buyfirepitfee)
Nut2Earn.totalSellFee (#314) is set pre-construction with a non-constant function or state variable:
- sellliquidityFee.add(sellyieldFee).add(selltreasuryFee).add(sellfirepitfee)
Nut2Earn.totalReferralFee (#319) is set pre-construction with a non-constant function or state variable:
- referee.add(referrer)
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() (#178) is not in mixedCase
Follow the Solidity naming convention.

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

Nut2Earn.slitherConstructorVariables() (#281-964) uses literals with too many digits:
- nutRebaseDenominator = 1000000 (#288)
Nut2Earn.slitherConstructorConstantVariables() (#281-964) uses literals with too many digits:
- INITIAL_FRAGMENTS_SUPPLY = 1000000 * (10 ** DECIMALS) (#297)
Nut2Earn.slitherConstructorConstantVariables() (#281-964) uses literals with too many digits:
- MAX_SUPPLY = 200000000 * (10 ** DECIMALS) (#299)
Nut2Earn.slitherConstructorConstantVariables() (#281-964) uses literals with too many digits:
- DEAD_WALLET_ADDRESS = 0x000000000000000000000000000000000000dEaD (#332)
Nut2Earn.slitherConstructorConstantVariables() (#281-964) uses literals with too many digits:
- ZERO_WALLET_ADDRESS = 0x0000000000000000000000000000000000000000 (#333)
Use: Ether suffix, Time suffix, or The scientific notation

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Attempt to swap token was unsuccessful. For some reason it is untradeable. If token is not in presale stage and is not traded outside PancakeSwap, then it's a scam

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Average 30d number of PancakeSwap swaps is low.

Number of Binance Smart Chain (BSC) token holders is low.

Token is deployed only at one blockchain

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 verify that token and website are owned by the same team (no listings + unable to find contract on website)

Token is not listed at Mobula.Finance

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Unable to find token on CoinHunt

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Unable to find code repository for the project

Unable to verify token contract address 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

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