MEO [Meo.tools] Token

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

Reentrancy in MEO.transferFrom(address,address,uint256) (#911-915):
External calls:
- _transfer(sender,recipient,amount) (#912)
- PancakeSwapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1226-1233)
- PancakeSwapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1213-1221)
External calls sending eth:
- _transfer(sender,recipient,amount) (#912)
- PancakeSwapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1226-1233)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#913)
- _allowances[owner][spender] = amount (#1118)
Apply the check-effects-interactions pattern.

Additional information: link

Contract name (Meo.tools) contains non-alphanumeric characters.
Not a direct threat, but may indicate unreliable intentions of developer. Non-alphanumeric chars (,.;!#*&") are extremely rare among low risk tokens.

MEO.addLiquidity(uint256,uint256) (#1225-1235) ignores return value by PancakeSwapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1226-1233)
Ensure that all the return values of the function calls are used.

Additional information: link

MEO._approve(address,address,uint256).owner (#1114) shadows:
- Ownable.owner() (#577-579) (function)
Rename the local variables that shadow another component.

Additional information: link

MEO.setThreshholdForLP(uint256) (#1028-1030) should emit an event for:
- numTokensSellToAddToLiquidity = threshold * 10 ** _decimals (#1029)
Emit an event for critical parameter changes.

Additional information: link

MEO.setWallets(address,address)._dev (#1004) lacks a zero-check on :
- devWallet = _dev (#1006)
Check that the address is not zero.

Additional information: link

Reentrancy in MEO.constructor() (#862-873):
External calls:
- pancakeswapV2Pair = IUniswapV2Factory(_PancakeSwapV2Router.factory()).createPair(address(this),_PancakeSwapV2Router.WETH()) (#866)
State variables written after the call(s):
- PancakeSwapV2Router = _PancakeSwapV2Router (#867)
- _isExcludedFromFee[owner()] = true (#869)
- _isExcludedFromFee[address(this)] = true (#870)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in MEO.transferFrom(address,address,uint256) (#911-915):
External calls:
- _transfer(sender,recipient,amount) (#912)
- PancakeSwapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1226-1233)
- PancakeSwapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1213-1221)
External calls sending eth:
- _transfer(sender,recipient,amount) (#912)
- PancakeSwapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1226-1233)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1119)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#913)
Apply the check-effects-interactions pattern.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (#523-540) uses assembly
- INLINE ASM (#532-535)
Do not use evm assembly.

Additional information: link

Different versions of Solidity is used:
- Version used: ['>=0.5.0', '>=0.6.0<0.8.0', '>=0.6.2', '>=0.6.2<0.8.0']
- >=0.6.0<0.8.0 (#34)
- >=0.6.0<0.8.0 (#113)
- >=0.6.0<0.8.0 (#329)
- >=0.6.2<0.8.0 (#355)
- >=0.6.0<0.8.0 (#546)
- >=0.6.2 (#602)
- >=0.6.2 (#700)
- >=0.5.0 (#746)
- >=0.6.0<0.8.0 (#766)
Use one Solidity version.

Additional information: link

SafeMath.trySub(uint256,uint256) (#145-148) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.6.0<0.8.0 (#766) is too complex
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 Address.functionDelegateCall(address,bytes,string) (#515-521):
- (success,returndata) = target.delegatecall(data) (#519)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable MEO._maxTxAmount (#841) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#347)" inContext (#341-350)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#611) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#612)
Prevent variables from having similar names.

Additional information: link

totalResearchFee() should be declared external:
- MEO.totalResearchFee() (#1240-1242)
Use the external attribute for functions never called from the contract.

Additional information: link

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.

Unable to crawl data from the website

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

Additional information: link

Token was delisted (assigned to inactive / untracked listing) from 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 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 Telegram link on the website

Unable to find Twitter link on the website

Unable to find token on CoinHunt

Additional information: link

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

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death

Token has relatively low CoinGecko rank