MNRY [Moonery] Token

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

MooneryUtils.addLiquidity(address,address,uint256,uint256) (contracts/utils/MooneryUtils.sol#96-113) sends eth to arbitrary user
Dangerous calls:
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in Moonery._transfer(address,address,uint256,uint256) (contracts/Moonery.sol#418-441):
External calls:
- _swapAndLiquify(from,to) (contracts/Moonery.sol#431)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
- pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/utils/MooneryUtils.sol#66-72)
- MooneryUtils.swapTokensForBnb(address(pancakeRouter),tokenAmountToBeSwapped) (contracts/Moonery.sol#567)
- MooneryUtils.addLiquidity(address(pancakeRouter),address(_escrow),otherPiece,bnbToBeAddedToLiquidity) (contracts/Moonery.sol#574)
External calls sending eth:
- _swapAndLiquify(from,to) (contracts/Moonery.sol#431)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (contracts/Moonery.sol#440)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (contracts/Moonery.sol#378)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/Moonery.sol#476)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/Moonery.sol#467)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/Moonery.sol#468)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/Moonery.sol#325)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (contracts/Moonery.sol#487)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/Moonery.sol#488)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/Moonery.sol#478)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (contracts/Moonery.sol#327)
- _tokenTransfer(from,to,amount,takeFee) (contracts/Moonery.sol#440)
- _rTotal = _rTotal.sub(rFee) (contracts/Moonery.sol#333)
- _tokenTransfer(from,to,amount,takeFee) (contracts/Moonery.sol#440)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (contracts/Moonery.sol#380)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (contracts/Moonery.sol#324)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (contracts/Moonery.sol#486)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (contracts/Moonery.sol#477)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (contracts/Moonery.sol#326)
Apply the check-effects-interactions pattern.

Additional information: link

Moonery._claimBNBReward(address) (contracts/Moonery.sol#580-610) ignores return value by IWBNB(_wbnb).transfer(address(_lottery),reward) (contracts/Moonery.sol#604)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Moonery._inSwapAndLiquify (contracts/Moonery.sol#50) is never initialized. It is used in:
- Moonery._swapAndLiquify(address,address) (contracts/Moonery.sol#537-578)
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

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.

Combination 2: Unchecked transfer + 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.

Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

Reentrancy in Moonery._claimBNBReward(address) (contracts/Moonery.sol#580-610):
External calls:
- MooneryUtils.swapBNBForTokens(address(pancakeRouter),address(0x000000000000000000000000000000000000dEaD),reward.div(5)) (contracts/Moonery.sol#589-593)
State variables written after the call(s):
- nextAvailableClaimDate[sender] = block.timestamp + getRewardCycleBlock() (contracts/Moonery.sol#598)
Apply the check-effects-interactions pattern.

Additional information: link

Moonery._swapAndLiquify(address,address) (contracts/Moonery.sol#537-578) ignores return value by MooneryUtils.addLiquidity(address(pancakeRouter),address(_escrow),otherPiece,bnbToBeAddedToLiquidity) (contracts/Moonery.sol#574)
Ensure that all the return values of the function calls are used.

Additional information: link

Moonery.setMinTokenNumberToSell(uint256) (contracts/Moonery.sol#289-291) should emit an event for:
- _minTokenNumberToSell = _tTotal.mul(minToSellPercent).div(10000) (contracts/Moonery.sol#290)
Emit an event for critical parameter changes.

Additional information: link

Moonery.activateContract(address,address,address).escrow_ (contracts/Moonery.sol#163) lacks a zero-check on :
- _escrow = escrow_ (contracts/Moonery.sol#167)
Check that the address is not zero.

Additional information: link

Reentrancy in Moonery.transferFrom(address,address,uint256) (contracts/Moonery.sol#233-237):
External calls:
- _transfer(sender,recipient,amount,0) (contracts/Moonery.sol#234)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
- pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/utils/MooneryUtils.sol#66-72)
- MooneryUtils.swapTokensForBnb(address(pancakeRouter),tokenAmountToBeSwapped) (contracts/Moonery.sol#567)
- MooneryUtils.addLiquidity(address(pancakeRouter),address(_escrow),otherPiece,bnbToBeAddedToLiquidity) (contracts/Moonery.sol#574)
External calls sending eth:
- _transfer(sender,recipient,amount,0) (contracts/Moonery.sol#234)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,BEP20: transfer amount exceeds allowance)) (contracts/Moonery.sol#235)
- _allowances[owner_][spender] = amount (contracts/Moonery.sol#414)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Moonery.transferFrom(address,address,uint256) (contracts/Moonery.sol#233-237):
External calls:
- _transfer(sender,recipient,amount,0) (contracts/Moonery.sol#234)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
- pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (contracts/utils/MooneryUtils.sol#66-72)
- MooneryUtils.swapTokensForBnb(address(pancakeRouter),tokenAmountToBeSwapped) (contracts/Moonery.sol#567)
- MooneryUtils.addLiquidity(address(pancakeRouter),address(_escrow),otherPiece,bnbToBeAddedToLiquidity) (contracts/Moonery.sol#574)
External calls sending eth:
- _transfer(sender,recipient,amount,0) (contracts/Moonery.sol#234)
- pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,owner,block.timestamp + 360) (contracts/utils/MooneryUtils.sol#105-112)
Event emitted after the call(s):
- Approval(owner_,spender,amount) (contracts/Moonery.sol#415)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,BEP20: transfer amount exceeds allowance)) (contracts/Moonery.sol#235)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (contracts/access/Ownable.sol#86-91) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (contracts/access/Ownable.sol#88)
Avoid relying on block.timestamp.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#171-188) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#180-183)
Do not use evm assembly.

Additional information: link

Moonery._ensureMaxTxAmount(address,address,uint256,uint256) (contracts/Moonery.sol#521-535) compares to a boolean constant:
-_isExcludedFromMaxTx[from] == false && _isExcludedFromMaxTx[to] == false (contracts/Moonery.sol#528-529)
Remove the equality to the boolean constant.

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', '>=0.6.8<0.9.0']
- >=0.6.0<0.8.0 (@openzeppelin/contracts/math/SafeMath.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/IERC20.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/SafeERC20.sol#3)
- >=0.6.2<0.8.0 (@openzeppelin/contracts/utils/Address.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/utils/Context.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/utils/ReentrancyGuard.sol#3)
- >=0.5.0 (@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol#1)
- >=0.6.2 (@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol#1)
- >=0.6.2 (@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol#1)
- >=0.6.8<0.9.0 (contracts/IWBNB.sol#3)
- >=0.6.8<0.9.0 (contracts/Moonery.sol#3)
- ABIEncoderV2 (contracts/Moonery.sol#4)
- >=0.6.8<0.9.0 (contracts/access/Ownable.sol#3)
- ABIEncoderV2 (contracts/access/Ownable.sol#4)
- >=0.6.8<0.9.0 (contracts/utils/MooneryUtils.sol#3)
Use one Solidity version.

Additional information: link

SafeMath.trySub(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#35-38) is never used and should be removed
Remove unused functions.

Additional information: link

Moonery._previousLiquidityFee (contracts/Moonery.sol#67) is set pre-construction with a non-constant function or state variable:
- liquidityFee
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

solc-0.6.8 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 Moonery._claimBNBReward(address) (contracts/Moonery.sol#580-610):
- (sent) = _msgSender().call{value: reward}() (contracts/Moonery.sol#606)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Constant Moonery._symbol (contracts/Moonery.sol#39) is not in UPPER_CASE_WITH_UNDERSCORES
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (@openzeppelin/contracts/utils/Context.sol#21)" inContext (@openzeppelin/contracts/utils/Context.sol#15-24)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable Moonery.reflectionFromToken(uint256,bool).rTransferAmount (contracts/Moonery.sol#264) is too similar to Moonery._transferToExcluded(address,address,uint256).tTransferAmount (contracts/Moonery.sol#475)
Prevent variables from having similar names.

Additional information: link

Moonery.slitherConstructorConstantVariables() (contracts/Moonery.sol#18-612) uses literals with too many digits:
- _tTotal = 1000000000 * 10 ** 6 * 10 ** 9 (contracts/Moonery.sol#34)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Moonery.threshHoldTopUpRate (contracts/Moonery.sol#55) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

addLiquidity(address,address,uint256,uint256) should be declared external:
- MooneryUtils.addLiquidity(address,address,uint256,uint256) (contracts/utils/MooneryUtils.sol#96-113)
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.

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

Additional information: link

Unable to find token on CoinMarketCap

Additional information: link

Unable to find token contract audit

Unable to find audit link on the website

Unable to find whitepaper link on the website

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

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

Token has no active CoinMarketCap listing / rank

Token has a considerable age, but social accounts / website are missing or have few users

Token has a considerable age, but average PancakeSwap 30d trading volume is low

Young tokens have high risks of price dump / death