About DRAGON
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META DRAGON CITY is a simulation game where you raise cartoon dragons. First, you pick a habitat, and then you hatch, feed, and raise a dragon to adulthood. Once it's an adult, your dragon can fight or breed with other adults to create new baby dragons for your city. Breeding happens with floating hearts, and battling involves tapping buttons to choose moves, but the dragons don't actually touch each other -- they just incur damage points until they disappear. As you complete tasks, you earn experience points and in-app currency ($DRAGON), each of which unlocks abilities or enables you to buy things. You can speed up your leveling-up by using $DRAGON Token, and you can spend on anything from cool accessories for your dragon to increased powers in battle.
Meta Dragon City follows players to raise their own dragons and design a city full of dragons on floating islands. Gold produced by dragons that can be used to buy and upgrade buildings and habitats. The farms exchange gold for food, which can be used to level up dragons that evolve them, improve strength depending on the dragon's rarity, and increase gold production. Breeding allows two dragons above the level of 4 to produce a hybrid dragon. $DRAGON is the premium currency that can be collected via in-app purchases; and by other tasks for collecting $DRAGON.
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Laser Scorebeta Last Audit: 23 February 2022
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Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
Contract creator or owner is blacklisted for past scams
Reentrancy in CoinToken._transfer(address,address,uint256) (#996-1011):
External calls:
- amount = handleTax(sender,recipient,amount) (#1007)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- amount = handleTax(sender,recipient,amount) (#1007)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- super._transfer(sender,recipient,amount) (#1010)
- _balances[sender] = senderBalance - amount (#349)
- _balances[recipient] += amount (#351)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#905)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#905)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- charityTokens += baseUnit * buyTaxes[charity] (#911)
- devTokens += baseUnit * buyTaxes[dev] (#909)
- liquidityTokens += baseUnit * buyTaxes[liquidity] (#910)
- marketingTokens += baseUnit * buyTaxes[marketing] (#908)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- charityTokens += baseUnit * sellTaxes[charity] (#925)
- devTokens += baseUnit * sellTaxes[dev] (#923)
- liquidityTokens += baseUnit * sellTaxes[liquidity] (#924)
- marketingTokens += baseUnit * sellTaxes[marketing] (#922)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- _balances[sender] = senderBalance - amount (#349)
- _balances[recipient] += amount (#351)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- charityTokens += baseUnit * buyTaxes[charity] (#911)
- charityTokens += baseUnit * sellTaxes[charity] (#925)
- charityTokens = 0 (#985)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- devTokens += baseUnit * buyTaxes[dev] (#909)
- devTokens += baseUnit * sellTaxes[dev] (#923)
- devTokens = 0 (#983)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- liquidityTokens += baseUnit * buyTaxes[liquidity] (#910)
- liquidityTokens += baseUnit * sellTaxes[liquidity] (#924)
- liquidityTokens = 0 (#984)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- marketingTokens += baseUnit * buyTaxes[marketing] (#908)
- marketingTokens += baseUnit * sellTaxes[marketing] (#922)
- marketingTokens = 0 (#982)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- charityTokens = 0 (#985)
- devTokens = 0 (#983)
- liquidityTokens = 0 (#984)
- marketingTokens = 0 (#982)
Apply the check-effects-interactions pattern.
Additional information: link
CoinToken.handleTax(address,address,uint256) (#890-994) uses a dangerous strict equality:
- taxSum == 0 (#929)
Don't use strict equality to determine if an account has enough Ether or tokens.
Additional information: link
Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.
Reentrancy in CoinToken.constructor(string,string,uint256,address[6],uint256[8]) (#865-880):
External calls:
- address(_addr[0]).transfer(msg.value) (#878)
State variables written after the call(s):
- _mint(msg.sender,initialSupply) (#879)
- _balances[account] += amount (#373)
- _mint(msg.sender,initialSupply) (#879)
- _totalSupply += amount (#372)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (#374)
- _mint(msg.sender,initialSupply) (#879)
Apply the check-effects-interactions pattern.
Additional information: link
Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#697) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#698)
Prevent variables from having similar names.
Additional information: link
CoinToken.slitherConstructorVariables() (#825-1137) uses literals with too many digits:
- swapThreshold = 500000000000 (#833)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
CoinToken.devTaxBuy (#835) is never used in CoinToken (#825-1137)
CoinToken.marketingTaxBuy (#836) is never used in CoinToken (#825-1137)
CoinToken.liquidityTaxBuy (#837) is never used in CoinToken (#825-1137)
CoinToken.charityTaxBuy (#838) is never used in CoinToken (#825-1137)
CoinToken.devTaxSell (#840) is never used in CoinToken (#825-1137)
CoinToken.marketingTaxSell (#841) is never used in CoinToken (#825-1137)
CoinToken.liquidityTaxSell (#842) is never used in CoinToken (#825-1137)
CoinToken.charityTaxSell (#843) is never used in CoinToken (#825-1137)
CoinToken.devTaxWallet (#845) is never used in CoinToken (#825-1137)
CoinToken.marketingTaxWallet (#846) is never used in CoinToken (#825-1137)
CoinToken.liquidityTaxWallet (#847) is never used in CoinToken (#825-1137)
CoinToken.charityTaxWallet (#848) is never used in CoinToken (#825-1137)
Remove unused state variables.
Additional information: link
CoinToken.charityTaxBuy (#838) should be constant
CoinToken.charityTaxSell (#843) should be constant
CoinToken.charityTaxWallet (#848) should be constant
CoinToken.denominator (#831) should be constant
CoinToken.devTaxBuy (#835) should be constant
CoinToken.devTaxSell (#840) should be constant
CoinToken.devTaxWallet (#845) should be constant
CoinToken.liquidityTaxBuy (#837) should be constant
CoinToken.liquidityTaxSell (#842) should be constant
CoinToken.liquidityTaxWallet (#847) should be constant
CoinToken.marketingTaxBuy (#836) should be constant
CoinToken.marketingTaxSell (#841) should be constant
CoinToken.marketingTaxWallet (#846) should be constant
CoinToken.swapThreshold (#833) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * buyTaxes[marketing] (#899)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * sellTaxes[marketing] (#913)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * buyTaxes[dev] (#900)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * sellTaxes[dev] (#914)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * buyTaxes[liquidity] (#901)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * sellTaxes[liquidity] (#915)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * buyTaxes[charity] (#902)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-tax += baseUnit * sellTaxes[charity] (#916)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-marketingTokens += baseUnit * sellTaxes[marketing] (#922)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-devTokens += baseUnit * sellTaxes[dev] (#923)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-marketingTokens += baseUnit * buyTaxes[marketing] (#908)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-devTokens += baseUnit * buyTaxes[dev] (#909)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-liquidityTokens += baseUnit * buyTaxes[liquidity] (#910)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-liquidityTokens += baseUnit * sellTaxes[liquidity] (#924)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-charityTokens += baseUnit * buyTaxes[charity] (#911)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-baseUnit = amount / denominator (#897)
-charityTokens += baseUnit * sellTaxes[charity] (#925)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-liquidityETH = (ethGained * ((liquidityTokens / 2 * 10 ** 18) / taxSum)) / 10 ** 18 (#951)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-marketingETH = (ethGained * ((marketingTokens * 10 ** 18) / taxSum)) / 10 ** 18 (#953)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-devETH = (ethGained * ((devTokens * 10 ** 18) / taxSum)) / 10 ** 18 (#954)
CoinToken.handleTax(address,address,uint256) (#890-994) performs a multiplication on the result of a division:
-charityETH = (ethGained * ((charityTokens * 10 ** 18) / taxSum)) / 10 ** 18 (#955)
Consider ordering multiplication before division.
Additional information: link
CoinToken._transfer(address,address,uint256) (#996-1011) uses tx.origin for authorization: require(bool,string)(! isBlacklisted(tx.origin),CoinToken: sender blacklisted) (#1004)
Do not use tx.origin for authorization.
Additional information: link
CoinToken.handleTax(address,address,uint256) (#890-994) ignores return value by taxWallets[marketing].call{value: marketingETH}() (#974)
CoinToken.handleTax(address,address,uint256) (#890-994) ignores return value by taxWallets[dev].call{value: devETH}() (#975)
CoinToken.handleTax(address,address,uint256) (#890-994) ignores return value by taxWallets[charity].call{value: charityETH}() (#976)
CoinToken.handleTax(address,address,uint256) (#890-994) ignores return value by taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Ensure that the return value of a low-level call is checked or logged.
Additional information: link
CoinToken.handleTax(address,address,uint256).tax (#896) 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
CoinToken.handleTax(address,address,uint256) (#890-994) ignores return value by uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
Ensure that all the return values of the function calls are used.
Additional information: link
Reentrancy in CoinToken.constructor(string,string,uint256,address[6],uint256[8]) (#865-880):
External calls:
- uniswapV2Pair = IUniswapV2Pair(uniswapV2Factory.createPair(address(this),uniswapV2Router02.WETH())) (#871)
State variables written after the call(s):
- setBuyTax(_value[0],_value[1],_value[3],_value[2]) (#873)
- buyTaxes[dev] = dev (#1079)
- buyTaxes[marketing] = marketing (#1080)
- buyTaxes[liquidity] = liquidity (#1081)
- buyTaxes[charity] = charity (#1082)
- exclude(msg.sender) (#876)
- excludeList[account] = true (#1064)
- exclude(address(this)) (#877)
- excludeList[account] = true (#1064)
- setSellTax(_value[4],_value[5],_value[7],_value[6]) (#874)
- sellTaxes[dev] = dev (#1090)
- sellTaxes[marketing] = marketing (#1091)
- sellTaxes[liquidity] = liquidity (#1092)
- sellTaxes[charity] = charity (#1093)
- taxWallets[liquidity] = _addr[0] (#872)
- setTaxWallets(_addr[2],_addr[3],_addr[4]) (#875)
- taxWallets[dev] = dev (#1100)
- taxWallets[marketing] = marketing (#1101)
- taxWallets[charity] = charity (#1102)
Reentrancy in CoinToken.constructor(string,string,uint256,address[6],uint256[8]) (#865-880):
External calls:
- uniswapV2Pair = IUniswapV2Pair(uniswapV2Factory.createPair(address(this),uniswapV2Router02.WETH())) (#871)
External calls sending eth:
- address(_addr[0]).transfer(msg.value) (#878)
State variables written after the call(s):
- _mint(msg.sender,initialSupply) (#879)
- _balances[account] += amount (#373)
- _mint(msg.sender,initialSupply) (#879)
- _totalSupply += amount (#372)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- _approve(address(this),address(uniswapV2Router02),toSell) (#938)
- _allowances[owner][spender] = amount (#428)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- _approve(address(this),address(uniswapV2Router02),liquidityToken) (#957)
- _allowances[owner][spender] = amount (#428)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
State variables written after the call(s):
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- _allowances[owner][spender] = amount (#428)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in CoinToken._transfer(address,address,uint256) (#996-1011):
External calls:
- amount = handleTax(sender,recipient,amount) (#1007)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- amount = handleTax(sender,recipient,amount) (#1007)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#353)
- super._transfer(sender,recipient,amount) (#1010)
Reentrancy in CoinToken.constructor(string,string,uint256,address[6],uint256[8]) (#865-880):
External calls:
- uniswapV2Pair = IUniswapV2Pair(uniswapV2Factory.createPair(address(this),uniswapV2Router02.WETH())) (#871)
External calls sending eth:
- address(_addr[0]).transfer(msg.value) (#878)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (#374)
- _mint(msg.sender,initialSupply) (#879)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#429)
- _approve(address(this),address(uniswapV2Router02),toSell) (#938)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#429)
- _approve(address(this),address(uniswapV2Router02),liquidityToken) (#957)
Reentrancy in CoinToken.handleTax(address,address,uint256) (#890-994):
External calls:
- _transfer(from,address(this),tax) (#919)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- uniswapV2Router02.swapExactTokensForETH(toSell,0,sellPath,address(this),block.timestamp) (#940-946)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
External calls sending eth:
- _transfer(from,address(this),tax) (#919)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- (amountToken,amountETH,liquidity) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(address(this),liquidityToken,0,0,taxWallets[liquidity],block.timestamp) (#959-966)
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#429)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
- Transfer(sender,recipient,amount) (#353)
- _transfer(address(this),taxWallets[dev],remainingTokens) (#971)
Apply the check-effects-interactions pattern.
Additional information: link
CoinToken.handleTax(address,address,uint256) (#890-994) uses timestamp for comparisons
Dangerous comparisons:
- tax > 0 (#904)
- tax > 0 (#918)
- taxSum == 0 (#929)
- ethValue >= swapThreshold (#933)
- remainingTokens > 0 (#970)
- ethGained - (marketingETH + devETH + liquidityETH + charityETH) > 0 (#978)
Avoid relying on block.timestamp.
Additional information: link
Context._msgData() (#121-123) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version^0.8.9 (#4) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.10 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 CoinToken.handleTax(address,address,uint256) (#890-994):
- taxWallets[marketing].call{value: marketingETH}() (#974)
- taxWallets[dev].call{value: devETH}() (#975)
- taxWallets[charity].call{value: charityETH}() (#976)
- taxWallets[marketing].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}() (#979)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#638) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#639) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#656) is not in mixedCase
Function IUniswapV2Router01.WETH() (#692) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
name() should be declared external:
- ERC20.name() (#177-179)
symbol() should be declared external:
- ERC20.symbol() (#185-187)
decimals() should be declared external:
- ERC20.decimals() (#202-204)
totalSupply() should be declared external:
- ERC20.totalSupply() (#209-211)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#216-218)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#228-231)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#236-238)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#247-250)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#265-279)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#293-296)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#312-320)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#518-520)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#526-529)
triggerTax() should be declared external:
- CoinToken.triggerTax() (#1016-1018)
pause() should be declared external:
- CoinToken.pause() (#1023-1026)
unpause() should be declared external:
- CoinToken.unpause() (#1031-1034)
burn(uint256) should be declared external:
- CoinToken.burn(uint256) (#1039-1041)
enableBlacklist(address) should be declared external:
- CoinToken.enableBlacklist(address) (#1046-1049)
disableBlacklist(address) should be declared external:
- CoinToken.disableBlacklist(address) (#1054-1057)
removeExclude(address) should be declared external:
- CoinToken.removeExclude(address) (#1070-1073)
enableTax() should be declared external:
- CoinToken.enableTax() (#1108-1111)
disableTax() should be declared external:
- CoinToken.disableTax() (#1116-1119)
Use the external attribute for functions never called from the contract.
Additional information: link
Contract has 0% buy tax and 99% sell tax.
Taxes are extremely high (over 30%)
Additional information: link
Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.
Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.
Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.
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
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
Token is marked as scam (rug pull, honeypot, phishing, etc.)
Additional information: link
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 scam / price dump / death
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of scam / price dump / death
Token has relatively low CoinGecko rank
Token has relatively low CoinMarketCap rank
Price for DRAGON
LASER DESK beta
Unable to find Youtube account
Unable to find Discord account
Twitter account has few posts