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LKT [Lucky] Token

About LKT

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Token 7 months
CoinMarketCap 7 months

LuckyToken is a BSC provably fair casino.

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Laser Scorebeta Last Audit: 30 November 2021

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Token is either risky or in presale. For presale 30+ is a fine score.

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

LuckyToken.addLiquidity(uint256,uint256) (#1783-1798) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1789-1796)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#940-965):
External calls:
- (success) = user.call{gas: 3000,value: _withdrawableDividend}() (#948)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#951)
Apply the check-effects-interactions pattern.

Additional information: link

LuckyToken.holderBNBUsedForBuyBacks (#1248) is never initialized. It is used in:
- LuckyToken.getBNBAvailableForHolderBuyBack(address) (#1618-1620)
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.

Variable 'LuckyToken._transfer(address,address,uint256).claims (#1720)' in LuckyToken._transfer(address,address,uint256) (#1649-1726) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1721)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in DividendPayingToken.swapETHForTokens(address,uint256) (#813-854):
External calls:
- swapRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: ethAmount}(1,path,address(recipient),block.timestamp + 360) (#832-842)
- (success) = recipient.call{gas: 3000,value: ethAmount}() (#846)
State variables written after the call(s):
- withdrawnDividends[recipient] = withdrawnDividends[recipient].sub(ethAmount) (#849)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in LuckyToken.updateDividendTracker(address) (#1409-1425):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1416)
- newDividendTracker.excludeFromDividends(address(this)) (#1417)
- newDividendTracker.excludeFromDividends(owner()) (#1418)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1419)
- newDividendTracker.excludeFromDividends(address(0xdead)) (#1420)
Event emitted after the call(s):
- UpdateDividendTracker(newAddress,address(dividendTracker)) (#1422)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in LuckyToken.updateDividendTracker(address) (#1409-1425):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1416)
- newDividendTracker.excludeFromDividends(address(this)) (#1417)
- newDividendTracker.excludeFromDividends(owner()) (#1418)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1419)
- newDividendTracker.excludeFromDividends(address(0xdead)) (#1420)
State variables written after the call(s):
- dividendTracker = newDividendTracker (#1424)
Apply the check-effects-interactions pattern.

Additional information: link

DividendPayingToken.swapETHForTokens(address,uint256).swapSuccess (#818) is a local variable never initialized
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

LuckyToken.addLiquidity(uint256,uint256) (#1783-1798) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,liquidityWallet,block.timestamp) (#1789-1796)
Ensure that all the return values of the function calls are used.

Additional information: link

LuckyToken.constructor().totalSupply (#1349) shadows:
- ERC20.totalSupply() (#532-534) (function)
- IERC20.totalSupply() (#99) (function)
Rename the local variables that shadow another component.

Additional information: link

LuckyToken.updateFees(uint256,uint256,uint256) (#1494-1500) should emit an event for:
- operationsFee = _operationsFee (#1495)
- rewardsFee = _rewardsFee (#1496)
- liquidityFee = _liquidityFee (#1497)
- totalFees = operationsFee + rewardsFee + liquidityFee (#1498)
Emit an event for critical parameter changes.

Additional information: link

LuckyToken.airdropToWallets(address[],uint256[]) (#1468-1476) has external calls inside a loop: dividendTracker.setBalance(address(wallet),balanceOf(wallet)) (#1474)
Favor pull over push strategy for external calls.

Additional information: link

DividendTracker.canAutoClaim(uint256) (#2001-2007) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#2002)
- block.timestamp.sub(lastClaimTime) >= claimWait (#2006)
Avoid relying on block.timestamp.

Additional information: link

LuckyToken.isContract(address) (#1533-1542) uses assembly
- INLINE ASM (#1540)
Do not use evm assembly.

Additional information: link

DividendPayingToken.setRewardToken(address,address,address) (#873-891) compares to a boolean constant:
-userHasCustomRewardToken[holder] == true (#874)
Remove the equality to the boolean constant.

Additional information: link

SafeMathInt.mul(int256,int256) (#261-268) is never used and should be removed
Remove unused functions.

Additional information: link

solc-0.8.9 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 LuckyToken.recoverExcess(uint256) (#1801-1807):
- (success) = address(operationsWallet).call{value: amount}() (#1803)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Parameter DividendTracker.getAccount(address)._account (#1937) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#34)" inContext (#28-37)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (#941) is too similar to DividendTracker.getAccount(address).withdrawableDividends (#1942)
Prevent variables from having similar names.

Additional information: link

DividendTracker.getAccountAtIndex(uint256) (#1982-1999) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (#1993)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SafeMathInt.MAX_INT256 (#256) is never used in SafeMathInt (#254-312)
Remove unused state variables.

Additional information: link

LuckyToken.sellFeeIncreaseFactor (#1271) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (#1836-1838)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Average 30d PancakeSwap volume is low.


Average PancakeSwap trading volume, liqudity, number of swaps are low. Token seems to be inactive.


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 number of swaps.


Twitter account link seems to be invalid


Unable to find Blog account (Reddit or Medium)


Unable to find Youtube account


Unable to find Discord account


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

Additional information: link


Unable to find token/project description on the website or on BscScan, CoinMarketCap


Unable to find token contract audit


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


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 price dump / death


Token has relatively low CoinGecko rank


Token has relatively low CoinMarketCap rank

Price for LKT