Alpha [Chad Cheems] Token

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

Cheems.payMarketing(address,uint256,uint256,address) (#274-279) sends eth to arbitrary user
Dangerous calls:
- recipient.transfer(payment) (#275)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in Cheems._transferFrom(address,address,uint256) (#475-501):
External calls:
- tokenSwap() (#490)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#422-428)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
External calls sending eth:
- tokenSwap() (#490)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#492)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#496)
- amountReceived = takeFee(sender,recipient,amount) (#493)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#363)
Apply the check-effects-interactions pattern.

Additional information: link

Cheems.clearBalance().tmpSuccess (#262) is written in both
(tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
tmpSuccess = false (#263)
Cheems.payMarketing(address,uint256,uint256,address).tmpSuccess (#276) is written in both
(tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
tmpSuccess = false (#278)
Fix or remove the writes.

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.

Cheems.takeFee(address,address,uint256) (#349-367) performs a multiplication on the result of a division:
-_tradingFee = _tradingFee * sellMulti.div(100) (#357)
Consider ordering multiplication before division.

Additional information: link

Cheems.tokenSwap() (#411-456) ignores return value by router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
Ensure that all the return values of the function calls are used.

Additional information: link

Cheems.seFees(uint256,uint256,uint256,uint256,uint256) (#289-297) should emit an event for:
- marketingFee = _marketingFee (#291)
- teamFee = _teamFee (#292)
- liquidityFee = _liquidityFee (#293)
- devFee = _devFee (#294)
- sellMulti = _sellMulti (#295)
- totalFee = _marketingFee.add(_teamFee).add(_liquidityFee).add(_devFee) (#296)
Cheems.setTokenSwapSettings(bool,uint256) (#299-302) should emit an event for:
- swapThreshold = _amount * (10 ** _decimals) (#301)
Cheems.setTxLimit(uint256) (#334-336) should emit an event for:
- _maxTxAmount = amount (#335)
Emit an event for critical parameter changes.

Additional information: link

Auth.transferOwnership(address).adr (#92) lacks a zero-check on :
- owner = adr (#93)
Cheems.setWallets(address,address,address,address)._marketingWallet (#266) lacks a zero-check on :
- marketingWallet = _marketingWallet (#268)
Cheems.setWallets(address,address,address,address)._teamWallet (#266) lacks a zero-check on :
- teamWallet = _teamWallet (#269)
Cheems.setWallets(address,address,address,address)._devWallet (#266) lacks a zero-check on :
- devWallet = _devWallet (#270)
Cheems.setWallets(address,address,address,address)._liquidityWallet (#267) lacks a zero-check on :
- liquidityWallet = _liquidityWallet (#271)
Check that the address is not zero.

Additional information: link

Reentrancy in Cheems._transferFrom(address,address,uint256) (#475-501):
External calls:
- tokenSwap() (#490)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#422-428)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
External calls sending eth:
- tokenSwap() (#490)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
State variables written after the call(s):
- amountReceived = takeFee(sender,recipient,amount) (#493)
- nope[sender] = true (#353)
Reentrancy in Cheems.constructor() (#209-225):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WBNB,address(this)) (#212)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = uint256(- 1) (#213)
- _balances[msg.sender] = _totalSupply (#223)
- devWallet = 0x27B32370bD074fb9C556f4edC0f02c9D6eaf9eBa (#220)
- isFeeExempt[msg.sender] = true (#215)
- isTxLimitExempt[msg.sender] = true (#216)
- liquidityWallet = 0x877116B71b865638f9A073E095ADf7c5317E552E (#221)
- marketingWallet = 0x877116B71b865638f9A073E095ADf7c5317E552E (#218)
- teamWallet = 0x55fd08Ed46a197765248d1060694cf23Fa872ca7 (#219)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Cheems._transferFrom(address,address,uint256) (#475-501):
External calls:
- tokenSwap() (#490)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#422-428)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
External calls sending eth:
- tokenSwap() (#490)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#364)
- amountReceived = takeFee(sender,recipient,amount) (#493)
- Transfer(sender,recipient,amountReceived) (#499)
Reentrancy in Cheems.constructor() (#209-225):
External calls:
- pair = IDEXFactory(router.factory()).createPair(WBNB,address(this)) (#212)
Event emitted after the call(s):
- Transfer(address(0),msg.sender,_totalSupply) (#224)
Reentrancy in Cheems.tokenSwap() (#411-456):
External calls:
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#422-428)
- sendToWallet(address(marketingWallet),amountBNBMarketing,address(swap)) (#439)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
External calls sending eth:
- sendToWallet(address(marketingWallet),amountBNBMarketing,address(swap)) (#439)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
Event emitted after the call(s):
- AutoLiquify(amountBNBLiquidity,amountToLiquify) (#453)
Apply the check-effects-interactions pattern.

Additional information: link

Cheems.checkFee() (#304-311) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp < launchTime + 7 (#305)
Avoid relying on block.timestamp.

Additional information: link

Cheems.setLockTilStartEnabled(bool) (#313-323) compares to a boolean constant:
-lockUsed == false (#314)
Cheems._transferFrom(address,address,uint256) (#475-501) compares to a boolean constant:
-require(bool,string)(lockTilStart != true,Trading not open yet) (#480)
Remove the equality to the boolean constant.

Additional information: link

Cheems._maxTxAmount (#167) is set pre-construction with a non-constant function or state variable:
- _totalSupply.mul(3).div(100)
Cheems._maxWalletToken (#168) is set pre-construction with a non-constant function or state variable:
- _totalSupply.mul(3).div(100)
Cheems.totalFee (#184) is set pre-construction with a non-constant function or state variable:
- marketingFee.add(teamFee).add(liquidityFee).add(devFee)
Cheems.swapThreshold (#204) is set pre-construction with a non-constant function or state variable:
- _totalSupply.mul(10).div(10000)
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 (#1) 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

Low level call in Cheems.clearBalance() (#259-264):
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
Low level call in Cheems.payMarketing(address,uint256,uint256,address) (#274-279):
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
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() (#107) is not in mixedCase
Parameter Cheems.setWallets(address,address,address,address)._marketingWallet (#266) is not in mixedCase
Parameter Cheems.setWallets(address,address,address,address)._teamWallet (#266) is not in mixedCase
Parameter Cheems.setWallets(address,address,address,address)._devWallet (#266) is not in mixedCase
Parameter Cheems.setWallets(address,address,address,address)._liquidityWallet (#267) is not in mixedCase
Parameter Cheems.seFees(uint256,uint256,uint256,uint256,uint256)._marketingFee (#289) is not in mixedCase
Parameter Cheems.seFees(uint256,uint256,uint256,uint256,uint256)._teamFee (#289) is not in mixedCase
Parameter Cheems.seFees(uint256,uint256,uint256,uint256,uint256)._liquidityFee (#289) is not in mixedCase
Parameter Cheems.seFees(uint256,uint256,uint256,uint256,uint256)._devFee (#290) is not in mixedCase
Parameter Cheems.seFees(uint256,uint256,uint256,uint256,uint256)._sellMulti (#290) is not in mixedCase
Parameter Cheems.setTokenSwapSettings(bool,uint256)._enabled (#299) is not in mixedCase
Parameter Cheems.setTokenSwapSettings(bool,uint256)._amount (#299) is not in mixedCase
Parameter Cheems.setLockTilStartEnabled(bool)._enabled (#313) is not in mixedCase
Variable Cheems.WBNB (#156) is not in mixedCase
Variable Cheems.DEAD (#157) is not in mixedCase
Variable Cheems.ZERO (#158) is not in mixedCase
Constant Cheems._name (#160) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Cheems._symbol (#161) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Cheems._decimals (#162) is not in UPPER_CASE_WITH_UNDERSCORES
Variable Cheems._totalSupply (#164) is not in mixedCase
Variable Cheems._maxTxAmount (#167) is not in mixedCase
Variable Cheems._maxWalletToken (#168) is not in mixedCase
Variable Cheems._balances (#170) is not in mixedCase
Variable Cheems._allowances (#171) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Reentrancy in Cheems._transferFrom(address,address,uint256) (#475-501):
External calls:
- tokenSwap() (#490)
- recipient.transfer(payment) (#275)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
External calls sending eth:
- tokenSwap() (#490)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- (tmpSuccess) = address(swap).call{gas: 50000,value: cleared}() (#262)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
State variables written after the call(s):
- _balances[sender] = _balances[sender].sub(amount,Insufficient Balance) (#492)
- _balances[recipient] = _balances[recipient].add(amountReceived) (#496)
- amountReceived = takeFee(sender,recipient,amount) (#493)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#363)
- amountReceived = takeFee(sender,recipient,amount) (#493)
- nope[sender] = true (#353)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#364)
- amountReceived = takeFee(sender,recipient,amount) (#493)
- Transfer(sender,recipient,amountReceived) (#499)
Reentrancy in Cheems.tokenSwap() (#411-456):
External calls:
- sendToWallet(address(marketingWallet),amountBNBMarketing,address(swap)) (#439)
- recipient.transfer(payment) (#275)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
External calls sending eth:
- sendToWallet(address(marketingWallet),amountBNBMarketing,address(swap)) (#439)
- recipient.transfer(payment) (#275)
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
- address(teamWallet).transfer(amountBNBTeam) (#440)
- address(devWallet).transfer(amountBNBDev) (#441)
- router.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,liquidityWallet,block.timestamp) (#445-452)
Event emitted after the call(s):
- AutoLiquify(amountBNBLiquidity,amountToLiquify) (#453)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#112) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#113)
Prevent variables from having similar names.

Additional information: link

Cheems.payMarketing(address,uint256,uint256,address) (#274-279) uses literals with too many digits:
- (tmpSuccess) = address(market).call{gas: 100000,value: tax}() (#276)
Cheems.slitherConstructorVariables() (#153-520) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#157)
Cheems.slitherConstructorVariables() (#153-520) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#158)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Cheems.ZERO (#158) is never used in Cheems (#153-520)
Remove unused state variables.

Additional information: link

Cheems.DEAD (#157) should be constant
Cheems.WBNB (#156) should be constant
Cheems.ZERO (#158) should be constant
Cheems._totalSupply (#164) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

authorize(address) should be declared external:
- Auth.authorize(address) (#76-78)
unauthorize(address) should be declared external:
- Auth.unauthorize(address) (#80-82)
transferOwnership(address) should be declared external:
- Auth.transferOwnership(address) (#92-96)
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 PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute volume.

Unable to find PancakeSwap trading pair to compute number of swaps.

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 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 whitepaper link on the website

Unable to find Twitter link on the website

Unable to find token on CoinHunt

Additional information: link

Unable to find code repository for the project

Young tokens have high risks of price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death