GYC [Gym Cat] Token

GymCat.sendETHToFee(uint256) (#900-902) sends eth to arbitrary user
Dangerous calls:
- _marketingAddress.transfer(amount) (#901)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in GymCat._transfer(address,address,uint256) (#904-942):
External calls:
- swapTokensForEth(contractTokenBalance) (#909)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#949-955)
External calls sending eth:
- sendETHToFee(address(this).balance) (#912)
- _marketingAddress.transfer(amount) (#901)
State variables written after the call(s):
- super._transfer(sender,address(this),_MarketingFee) (#923)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,_deadAdress,_BurnFee) (#924)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,address(this),_MarketingFee_scope_0) (#936)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,_deadAdress,_BurnFee_scope_1) (#937)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,recipient,amount) (#941)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
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.

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

GymCat.constructor(string,string)._name (#858) shadows:
- ERC20._name (#530) (state variable)
GymCat.constructor(string,string)._symbol (#858) shadows:
- ERC20._symbol (#531) (state variable)
Rename the local variables that shadow another component.

Additional information: link

GymCat.setDeveloperAddress(address) (#896-898) should emit an event for:
- _devAddress = address(_address) (#897)
Emit an event for critical parameter changes.

Additional information: link

GymCat.setMarketingAddress(address)._address (#892) lacks a zero-check on :
- _marketingAddress = address(_address) (#893)
GymCat.setDeveloperAddress(address)._address (#896) lacks a zero-check on :
- _devAddress = address(_address) (#897)
Check that the address is not zero.

Additional information: link

Reentrancy in GymCat._transfer(address,address,uint256) (#904-942):
External calls:
- sendETHToFee(address(this).balance) (#912)
- _marketingAddress.transfer(amount) (#901)
State variables written after the call(s):
- super._transfer(sender,address(this),_MarketingFee) (#923)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,_deadAdress,_BurnFee) (#924)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,address(this),_MarketingFee_scope_0) (#936)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,_deadAdress,_BurnFee_scope_1) (#937)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
- super._transfer(sender,recipient,amount) (#941)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#743)
- _balances[recipient] = _balances[recipient].add(amount) (#744)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,address(this),_MarketingFee) (#923)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,address(this),_MarketingFee_scope_0) (#936)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,_deadAdress,_BurnFee_scope_1) (#937)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,_deadAdress,_BurnFee) (#924)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,recipient,amount) (#941)
Apply the check-effects-interactions pattern.

Additional information: link

GymCat.slitherConstructorVariables() (#839-959) uses literals with too many digits:
- _deadAdress = 0x000000000000000000000000000000000000dEaD (#856)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Reentrancy in GymCat.constructor(string,string) (#858-864):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#860)
State variables written after the call(s):
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#861)
- _allowances[owner][spender] = amount (#805)
- _mint(msg.sender,TOTAL_SUPPLY) (#862)
- _balances[account] = _balances[account].add(amount) (#763)
- _mint(msg.sender,TOTAL_SUPPLY) (#862)
- _totalSupply = _totalSupply.add(amount) (#762)
- excludeFee[address(this)] = true (#863)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in GymCat._transfer(address,address,uint256) (#904-942):
External calls:
- swapTokensForEth(contractTokenBalance) (#909)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#949-955)
External calls sending eth:
- sendETHToFee(address(this).balance) (#912)
- _marketingAddress.transfer(amount) (#901)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,address(this),_MarketingFee) (#923)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,recipient,amount) (#941)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,address(this),_MarketingFee_scope_0) (#936)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,_deadAdress,_BurnFee) (#924)
- Transfer(sender,recipient,amount) (#745)
- super._transfer(sender,_deadAdress,_BurnFee_scope_1) (#937)
Reentrancy in GymCat.constructor(string,string) (#858-864):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#860)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#806)
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#861)
- Transfer(address(0),account,amount) (#764)
- _mint(msg.sender,TOTAL_SUPPLY) (#862)
Apply the check-effects-interactions pattern.

Additional information: link

Different versions of Solidity is used:
- Version used: ['>=0.5.0', '>=0.6.2', '^0.8.0']
- ^0.8.0 (#1)
- >=0.6.2 (#77)
- >=0.5.0 (#175)
- >=0.6.2 (#195)
- ^0.8.0 (#238)
- ^0.8.0 (#440)
- ^0.8.0 (#463)
- ^0.8.0 (#518)
- ^0.8.0 (#837)
Use one Solidity version.

Additional information: link

Context._msgData() (#457-459) is never used and should be removed
ERC20._burn(address,uint256) (#778-786) is never used and should be removed
ERC20._setupDecimals(uint8) (#816-818) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#412-415) is never used and should be removed
SafeMath.mod(uint256,uint256) (#374-377) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#432-435) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#246-250) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#282-285) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#292-295) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#267-275) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#257-260) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.0 (#1) allows old versions
Pragma version>=0.6.2 (#77) allows old versions
Pragma version>=0.5.0 (#175) allows old versions
Pragma version>=0.6.2 (#195) allows old versions
Pragma version^0.8.0 (#238) allows old versions
Pragma version^0.8.0 (#440) allows old versions
Pragma version^0.8.0 (#463) allows old versions
Pragma version^0.8.0 (#518) allows old versions
Pragma version^0.8.0 (#837) allows old versions
solc-0.8.13 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 IUniswapV2Router01.WETH() (#81) is not in mixedCase
Parameter GymCat.toggleSwap(bool)._swapEnabled (#888) is not in mixedCase
Parameter GymCat.setMarketingAddress(address)._address (#892) is not in mixedCase
Parameter GymCat.setDeveloperAddress(address)._address (#896) is not in mixedCase
Variable GymCat.TOTAL_SUPPLY (#843) is not in mixedCase
Constant GymCat.marketingSellFee (#846) is not in UPPER_CASE_WITH_UNDERSCORES
Constant GymCat.marketingBuyFee (#847) is not in UPPER_CASE_WITH_UNDERSCORES
Constant GymCat.burnSellFee (#848) is not in UPPER_CASE_WITH_UNDERSCORES
Constant GymCat.burnBuyFee (#849) is not in UPPER_CASE_WITH_UNDERSCORES
Variable GymCat.WBNB (#852) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#86) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#87)
Variable GymCat._deadAdress (#856) is too similar to GymCat._devAddress (#857)
Variable GymCat.TOTAL_SUPPLY (#843) is too similar to ERC20._totalSupply (#528)
Prevent variables from having similar names.

Additional information: link

GymCat.WBNB (#852) is never used in GymCat (#839-959)
Remove unused state variables.

Additional information: link

GymCat.TOTAL_SUPPLY (#843) should be constant
GymCat.WBNB (#852) should be constant
GymCat._deadAdress (#856) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#502-505)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#511-515)
name() should be declared external:
- ERC20.name() (#552-554)
symbol() should be declared external:
- ERC20.symbol() (#560-562)
decimals() should be declared external:
- ERC20.decimals() (#577-579)
totalSupply() should be declared external:
- ERC20.totalSupply() (#584-592)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#615-623)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#628-636)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#645-653)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#668-677)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#691-698)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#714-721)
toggleSwap(bool) should be declared external:
- GymCat.toggleSwap(bool) (#888-890)
setMarketingAddress(address) should be declared external:
- GymCat.setMarketingAddress(address) (#892-894)
setDeveloperAddress(address) should be declared external:
- GymCat.setDeveloperAddress(address) (#896-898)
Use the external attribute for functions never called from the contract.

Additional information: link

Average 30d PancakeSwap liquidity is low.

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

Token is deployed only at one blockchain

Token has only one trading pair

Contract has 2% buy tax and 4% sell tax.
Taxes are low and contract ownership is renounced.

Unable to find website, listings and other project-related information

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank