EFARM [EverFarm] Token

EFARM.swapBack() (EFARM.sol#282-328) sends eth to arbitrary user
Dangerous calls:
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in EFARM._transferFrom(address,address,uint256) (EFARM.sol#172-213):
External calls:
- rebase() (EFARM.sol#186)
- pairContract.sync() (EFARM.sol#131)
- addLiquidity() (EFARM.sol#189)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (EFARM.sol#259-265)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
- swapBack() (EFARM.sol#192)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (EFARM.sol#296-302)
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
External calls sending eth:
- addLiquidity() (EFARM.sol#189)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
- swapBack() (EFARM.sol#192)
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
State variables written after the call(s):
- _gonBalances[sender] = _gonBalances[sender].sub(gonAmount) (EFARM.sol#198)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonAmountReceived) (EFARM.sol#202-204)
- gonAmountReceived = takeFee(sender,gonAmount) (EFARM.sol#199-201)
- _gonBalances[EverFire] = _gonBalances[EverFire].add(gonAmount.div(feeDenominator).mul(burnFee)) (EFARM.sol#224-226)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(gonAmount.div(feeDenominator).mul(_treasuryFee.add(EPF))) (EFARM.sol#227-229)
- _gonBalances[autoLiquidityReceiver] = _gonBalances[autoLiquidityReceiver].add(gonAmount.div(feeDenominator).mul(liquidityFee)) (EFARM.sol#230-232)
- swapBack() (EFARM.sol#192)
- inSwap = true (EFARM.sol#51)
- inSwap = false (EFARM.sol#53)
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)

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.

EFARM.swapBack().success (EFARM.sol#312) is written in both
(success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
(success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
EFARM.swapBack().success (EFARM.sol#312) is written in both
(success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
(success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
Fix or remove the writes.

Additional information: link

EFARM.addLiquidity() (EFARM.sol#238-280) ignores return value by router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
Ensure that all the return values of the function calls are used.

Additional information: link

EFARM.setFeeReceivers(address,address,address,address)._autoLiquidityReceiver (EFARM.sol#469) lacks a zero-check on :
- autoLiquidityReceiver = _autoLiquidityReceiver (EFARM.sol#474)
EFARM.setFeeReceivers(address,address,address,address)._treasuryReceiver (EFARM.sol#470) lacks a zero-check on :
- treasuryReceiver = _treasuryReceiver (EFARM.sol#475)
EFARM.setFeeReceivers(address,address,address,address)._SuuperInsuranceFundReceiver (EFARM.sol#471) lacks a zero-check on :
- SuuperInsuranceFundReceiver = _SuuperInsuranceFundReceiver (EFARM.sol#476)
EFARM.setFeeReceivers(address,address,address,address)._teamWallet (EFARM.sol#472) lacks a zero-check on :
- TeamWallet = _teamWallet (EFARM.sol#477)
EFARM.AdjustWildfireWallet(address).newDeadWallet (EFARM.sol#495) lacks a zero-check on :
- EverFire = newDeadWallet (EFARM.sol#497)
EFARM.setPairAddress(address)._pairAddress (EFARM.sol#500) lacks a zero-check on :
- pairAddress = _pairAddress (EFARM.sol#501)
Check that the address is not zero.

Additional information: link

getLiquidityBacking(uint256) should be declared external:
- EFARM.getLiquidityBacking(uint256) (EFARM.sol#480-488)
setPairAddress(address) should be declared external:
- EFARM.setPairAddress(address) (EFARM.sol#500-503)
owner() should be declared external:
- Ownable.owner() (Libraries.sol#339-341)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (Libraries.sol#352-355)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Libraries.sol#357-359)
name() should be declared external:
- ERC20Detailed.name() (Libraries.sol#383-385)
symbol() should be declared external:
- ERC20Detailed.symbol() (Libraries.sol#387-389)
decimals() should be declared external:
- ERC20Detailed.decimals() (Libraries.sol#391-393)
Use the external attribute for functions never called from the contract.

Additional information: link

EFARM.rebase() (EFARM.sol#110-134) performs a multiplication on the result of a division:
-times = deltaTime.div(3) (EFARM.sol#116)
-_lastRebasedTime = _lastRebasedTime.add(times.mul(600)) (EFARM.sol#129)
EFARM.takeFee(address,uint256) (EFARM.sol#215-236) performs a multiplication on the result of a division:
-feeAmount = gonAmount.div(feeDenominator).mul(_totalFee) (EFARM.sol#222)
EFARM.takeFee(address,uint256) (EFARM.sol#215-236) performs a multiplication on the result of a division:
-_gonBalances[EverFire] = _gonBalances[EverFire].add(gonAmount.div(feeDenominator).mul(burnFee)) (EFARM.sol#224-226)
EFARM.takeFee(address,uint256) (EFARM.sol#215-236) performs a multiplication on the result of a division:
-_gonBalances[address(this)] = _gonBalances[address(this)].add(gonAmount.div(feeDenominator).mul(_treasuryFee.add(EPF))) (EFARM.sol#227-229)
EFARM.takeFee(address,uint256) (EFARM.sol#215-236) performs a multiplication on the result of a division:
-_gonBalances[autoLiquidityReceiver] = _gonBalances[autoLiquidityReceiver].add(gonAmount.div(feeDenominator).mul(liquidityFee)) (EFARM.sol#230-232)
EFARM.swapBack() (EFARM.sol#282-328) performs a multiplication on the result of a division:
-TreasuryAndTeamAmount = receivedAmount.mul(Treasury).div(Treasury.add(EPF)) (EFARM.sol#308)
-TreasuryAmount = TreasuryAndTeamAmount * 4 / 5 (EFARM.sol#309)
EFARM.getLiquidityBacking(uint256) (EFARM.sol#480-488) performs a multiplication on the result of a division:
-liquidityBalance = _gonBalances[pair].div(_gonsPerFragment) (EFARM.sol#485)
-accuracy.mul(liquidityBalance.mul(2)).div(getCirculatingSupply()) (EFARM.sol#486-487)
Consider ordering multiplication before division.

Additional information: link

EFARM.setLaunchTimestamp(uint256) (EFARM.sol#104-109) should emit an event for:
- LaunchTimestamp = Timestamp (EFARM.sol#107)
- _lastRebasedTime = Timestamp (EFARM.sol#108)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in EFARM.addLiquidity() (EFARM.sol#238-280):
External calls:
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (EFARM.sol#259-265)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
External calls sending eth:
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
State variables written after the call(s):
- _lastAddLiquidityTime = block.timestamp (EFARM.sol#279)
Reentrancy in EFARM.constructor() (EFARM.sol#72-100):
External calls:
- pair = IPancakeSwapFactory(router.factory()).createPair(router.WETH(),address(this)) (EFARM.sol#76-79)
State variables written after the call(s):
- SuuperInsuranceFundReceiver = msg.sender (EFARM.sol#84)
- TeamWallet = msg.sender (EFARM.sol#83)
- _allowedFragments[address(this)][address(router)] = uint256(- 1) (EFARM.sol#86)
- _autoAddLiquidity = true (EFARM.sol#94)
- _autoRebase = true (EFARM.sol#93)
- _gonBalances[treasuryReceiver] = TOTAL_GONS (EFARM.sol#91)
- _gonsPerFragment = TOTAL_GONS.div(_totalSupply) (EFARM.sol#92)
- _isFeeExempt[treasuryReceiver] = true (EFARM.sol#95)
- _isFeeExempt[address(this)] = true (EFARM.sol#96)
- _transferOwnership(treasuryReceiver) (EFARM.sol#98)
- _owner = newOwner (Libraries.sol#364)
- _totalSupply = INITIAL_FRAGMENTS_SUPPLY (EFARM.sol#90)
- autoLiquidityReceiver = msg.sender (EFARM.sol#81)
- pairAddress = pair (EFARM.sol#87)
- pairContract = IPancakeSwapPair(pair) (EFARM.sol#88)
- treasuryReceiver = msg.sender (EFARM.sol#82)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in EFARM._transferFrom(address,address,uint256) (EFARM.sol#172-213):
External calls:
- rebase() (EFARM.sol#186)
- pairContract.sync() (EFARM.sol#131)
- addLiquidity() (EFARM.sol#189)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (EFARM.sol#259-265)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
- swapBack() (EFARM.sol#192)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (EFARM.sol#296-302)
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
External calls sending eth:
- addLiquidity() (EFARM.sol#189)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (EFARM.sol#270-277)
- swapBack() (EFARM.sol#192)
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount.div(_gonsPerFragment)) (EFARM.sol#234)
- gonAmountReceived = takeFee(sender,gonAmount) (EFARM.sol#199-201)
- Transfer(sender,recipient,gonAmountReceived.div(_gonsPerFragment)) (EFARM.sol#207-211)
Reentrancy in EFARM.constructor() (EFARM.sol#72-100):
External calls:
- pair = IPancakeSwapFactory(router.factory()).createPair(router.WETH(),address(this)) (EFARM.sol#76-79)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (Libraries.sol#363)
- _transferOwnership(treasuryReceiver) (EFARM.sol#98)
- Transfer(address(0x0),treasuryReceiver,_totalSupply) (EFARM.sol#99)
Reentrancy in EFARM.rebase() (EFARM.sol#110-134):
External calls:
- pairContract.sync() (EFARM.sol#131)
Event emitted after the call(s):
- LogRebase(epoch,_totalSupply) (EFARM.sol#133)
Apply the check-effects-interactions pattern.

Additional information: link

EFARM.setLaunchTimestamp(uint256) (EFARM.sol#104-109) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp < LaunchTimestamp,Already Launched) (EFARM.sol#105)
- require(bool,string)(Timestamp >= block.timestamp,Launch can't be in the past) (EFARM.sol#106)
EFARM.rebase() (EFARM.sol#110-134) uses timestamp for comparisons
Dangerous comparisons:
- times > 200 (EFARM.sol#119)
- i < times (EFARM.sol#122)
EFARM._transferFrom(address,address,uint256) (EFARM.sol#172-213) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp >= LaunchTimestamp,Not yet Launched) (EFARM.sol#184)
EFARM.shouldRebase() (EFARM.sol#356-364) uses timestamp for comparisons
Dangerous comparisons:
- _autoRebase && block.timestamp >= LaunchTimestamp && (_totalSupply < MAX_SUPPLY) && msg.sender != pair && ! inSwap && block.timestamp >= (_lastRebasedTime + 600) (EFARM.sol#357-363)
EFARM.shouldAddLiquidity() (EFARM.sol#366-372) uses timestamp for comparisons
Dangerous comparisons:
- _autoAddLiquidity && ! inSwap && msg.sender != pair && block.timestamp >= (_lastAddLiquidityTime + 3600) (EFARM.sol#367-371)
EFARM.AdjustWildfireWallet(address) (EFARM.sol#495-498) uses timestamp for comparisons
Dangerous comparisons:
- require(bool)(block.timestamp < LaunchTimestamp) (EFARM.sol#496)
Avoid relying on block.timestamp.

Additional information: link

SafeMath.mod(uint256,uint256) (Libraries.sol#91-94) is never used and should be removed
SafeMathInt.abs(int256) (Libraries.sol#36-39) is never used and should be removed
SafeMathInt.add(int256,int256) (Libraries.sol#30-34) is never used and should be removed
SafeMathInt.div(int256,int256) (Libraries.sol#18-22) is never used and should be removed
SafeMathInt.mul(int256,int256) (Libraries.sol#10-16) is never used and should be removed
SafeMathInt.sub(int256,int256) (Libraries.sol#24-28) is never used and should be removed
Remove unused functions.

Additional information: link

EFARM.totalFee (EFARM.sol#32-35) is set pre-construction with a non-constant function or state variable:
- liquidityFee.add(Treasury).add(EPF).add(burnFee)
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 (EFARM.sol#4) allows old versions
Pragma version^0.7.4 (Libraries.sol#4) allows old versions
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 EFARM.swapBack() (EFARM.sol#282-328):
- (success) = address(treasuryReceiver).call{gas: 70000,value: TreasuryAmount}() (EFARM.sol#312-315)
- (success,None) = address(TeamWallet).call{gas: 70000,value: TeamAmount}() (EFARM.sol#317-320)
- (success,None) = address(SuuperInsuranceFundReceiver).call{gas: 70000,value: receivedAmount.mul(EPF).div(Treasury.add(EPF))}() (EFARM.sol#322-327)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function EFARM.Launch() (EFARM.sol#101-103) is not in mixedCase
Parameter EFARM.setLaunchTimestamp(uint256).Timestamp (EFARM.sol#104) is not in mixedCase
Parameter EFARM.setAutoRebase(bool)._flag (EFARM.sol#380) is not in mixedCase
Parameter EFARM.setAutoAddLiquidity(bool)._flag (EFARM.sol#389) is not in mixedCase
Parameter EFARM.checkFeeExempt(address)._addr (EFARM.sol#452) is not in mixedCase
Parameter EFARM.setFeeReceivers(address,address,address,address)._autoLiquidityReceiver (EFARM.sol#469) is not in mixedCase
Parameter EFARM.setFeeReceivers(address,address,address,address)._treasuryReceiver (EFARM.sol#470) is not in mixedCase
Parameter EFARM.setFeeReceivers(address,address,address,address)._SuuperInsuranceFundReceiver (EFARM.sol#471) is not in mixedCase
Parameter EFARM.setFeeReceivers(address,address,address,address)._teamWallet (EFARM.sol#472) is not in mixedCase
Parameter EFARM.setWhitelist(address,bool)._addr (EFARM.sol#491) is not in mixedCase
Function EFARM.AdjustWildfireWallet(address) (EFARM.sol#495-498) is not in mixedCase
Parameter EFARM.setPairAddress(address)._pairAddress (EFARM.sol#500) is not in mixedCase
Variable EFARM._isFeeExempt (EFARM.sol#14) is not in mixedCase
Variable EFARM.Treasury (EFARM.sol#29) is not in mixedCase
Variable EFARM.EPF (EFARM.sol#30) is not in mixedCase
Variable EFARM.EverFire (EFARM.sol#38) is not in mixedCase
Variable EFARM.SuuperInsuranceFundReceiver (EFARM.sol#43) is not in mixedCase
Variable EFARM.TeamWallet (EFARM.sol#45) is not in mixedCase
Variable EFARM._autoRebase (EFARM.sol#61) is not in mixedCase
Variable EFARM._autoAddLiquidity (EFARM.sol#62) is not in mixedCase
Variable EFARM.LaunchTimestamp (EFARM.sol#63) is not in mixedCase
Variable EFARM._lastRebasedTime (EFARM.sol#64) is not in mixedCase
Variable EFARM._lastAddLiquidityTime (EFARM.sol#65) is not in mixedCase
Variable EFARM._totalSupply (EFARM.sol#66) is not in mixedCase
Function IPancakeSwapPair.DOMAIN_SEPARATOR() (Libraries.sol#141) is not in mixedCase
Function IPancakeSwapPair.PERMIT_TYPEHASH() (Libraries.sol#142) is not in mixedCase
Function IPancakeSwapPair.MINIMUM_LIQUIDITY() (Libraries.sol#159) is not in mixedCase
Function IPancakeSwapRouter.WETH() (Libraries.sol#179) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IPancakeSwapRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (Libraries.sol#184) is too similar to IPancakeSwapRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (Libraries.sol#185)
Prevent variables from having similar names.

Additional information: link

EFARM.slitherConstructorVariables() (EFARM.sol#6-519) uses literals with too many digits:
- EverFire = 0x000000000000000000000000000000000000dEaD (EFARM.sol#38)
EFARM.slitherConstructorConstantVariables() (EFARM.sol#6-519) uses literals with too many digits:
- INITIAL_FRAGMENTS_SUPPLY = 500000 * 10 ** DECIMALS (EFARM.sol#25-26)
EFARM.slitherConstructorConstantVariables() (EFARM.sol#6-519) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (EFARM.sol#39)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SafeMathInt.MAX_INT256 (Libraries.sol#8) is never used in SafeMathInt (Libraries.sol#6-40)
Remove unused state variables.

Additional information: link

EFARM.EPF (EFARM.sol#30) should be constant
EFARM.Treasury (EFARM.sol#29) should be constant
EFARM.burnFee (EFARM.sol#31) should be constant
EFARM.feeDenominator (EFARM.sol#36) should be constant
EFARM.liquidityFee (EFARM.sol#28) should be constant
EFARM.swapEnabled (EFARM.sol#46) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

Contract has 16% buy tax and 16% sell tax.
Taxes are suspiciously high (over 10%) and contract ownership is not renounced. Token has a high risk of becoming a honeypot.

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 low.

Token is deployed only at one blockchain

Token has only one trading pair

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

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

Additional information: link

Unable to find token on CoinGecko

Additional information: link

Unable to find token on CoinMarketCap

Additional information: link

Unable to find audit link on the website

Unable to find whitepaper link on the 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

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

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