duckegg.io Token Logo

EGG [duckegg.io] Token

ALERT: rug pull scam

About EGG

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Token 21 months

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Description

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Laser Scorebeta Last Audit: 22 December 2021

report
Token seems to be a scam (type: rug pull scam).

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

duckeggio.rescue() (#684-686) sends eth to arbitrary user
Dangerous calls:
- address(owner).transfer(address(this).balance) (#685)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Contract name (duckegg.io) 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.

Pragma version>=0.8.0<0.9.0 (#15) 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

duckeggio._maxTxAmountBuy (#388) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 100
duckeggio._maxTxAmountSell (#389) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 10000
duckeggio._maxWalletAmount (#390) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 100
duckeggio.swapThreshold (#416) is set pre-construction with a non-constant function or state variable:
- _totalSupply / 20000
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

duckeggio.constructor() (#433-452) performs a multiplication on the result of a division:
-_balances[msg.sender] = _totalSupply / 1000000 * 1000000 (#447)
duckeggio.constructor() (#433-452) performs a multiplication on the result of a division:
-_balances[0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B] = _totalSupply / 1000000 * 10000 (#450)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in duckeggio._transferFrom(address,address,uint256) (#488-517):
External calls:
- marketing() (#497)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToMarketing,0,path,marketingWallet,block.timestamp) (#638-644)
State variables written after the call(s):
- _balances[sender] -= amount (#509)
- _balances[recipient] += amountReceived (#512)
- amountReceived = takeFee(sender,amount) (#511)
- _balances[address(this)] += marketingtokens (#603)
- _balances[address(this)] += marketingtokens (#608)
- launch() (#503)
- launchedAt = block.number (#653)
Apply the check-effects-interactions pattern.

Additional information: link

duckeggio.setAntisniperBlocks(uint256) (#585-587) should emit an event for:
- antiSniperBlocks = blocks (#586)
duckeggio.setAntisniperGas(bool,uint256) (#589-593) should emit an event for:
- antiSniperGasLimit = quantity (#592)
duckeggio.setMaxWallet(uint256) (#656-658) should emit an event for:
- _maxWalletAmount = amount * _totalSupply / 100 (#657)
duckeggio.setFees(uint256,uint256) (#668-673) should emit an event for:
- marketingFee = _marketingFee (#669)
- feeDenominator = _feeDenominator (#670)
Emit an event for critical parameter changes.

Additional information: link

Auth.transferOwnership(address).adr (#71) lacks a zero-check on :
- owner = adr (#72)
duckeggio.setMarketingWallet(address)._marketingWallet (#675) lacks a zero-check on :
- marketingWallet = _marketingWallet (#676)
Check that the address is not zero.

Additional information: link

Reentrancy in duckeggio.constructor() (#433-452):
External calls:
- pcs2BNBPair = IDexFactory(router.factory()).createPair(router.WETH(),address(this)) (#435)
State variables written after the call(s):
- _allowances[address(this)][address(router)] = type()(uint256).max (#436)
- _balances[msg.sender] = _totalSupply / 1000000 * 1000000 (#447)
- _balances[0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B] = _totalSupply / 1000000 * 10000 (#450)
- isFeeExempt[msg.sender] = true (#438)
- isFeeExempt[address(this)] = true (#439)
- isTxLimitExempt[msg.sender] = true (#440)
- isTxLimitExempt[address(this)] = true (#441)
- isTxLimitExempt[DEAD] = true (#442)
- isTxLimitExempt[ZERO] = true (#443)
- marketingWallet = msg.sender (#445)
- pairs.push(pcs2BNBPair) (#446)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in duckeggio._transferFrom(address,address,uint256) (#488-517):
External calls:
- marketing() (#497)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToMarketing,0,path,marketingWallet,block.timestamp) (#638-644)
Event emitted after the call(s):
- Transfer(sender,address(this),marketingtokens) (#604)
- amountReceived = takeFee(sender,amount) (#511)
- Transfer(sender,address(this),marketingtokens) (#609)
- amountReceived = takeFee(sender,amount) (#511)
- Transfer(sender,recipient,amountReceived) (#515)
Reentrancy in duckeggio.constructor() (#433-452):
External calls:
- pcs2BNBPair = IDexFactory(router.factory()).createPair(router.WETH(),address(this)) (#435)
Event emitted after the call(s):
- Transfer(address(0),msg.sender,_totalSupply) (#451)
Apply the check-effects-interactions pattern.

Additional information: link

duckeggio.checkTxLimit(address,address,uint256) (#527-553) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(_lastSell[sender] + _coolDown < block.timestamp,Wait a bit longer) (#549)
Avoid relying on block.timestamp.

Additional information: link

Function IDexRouter.WETH() (#192) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#340) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#341) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#358) is not in mixedCase
Contract duckeggio (#378-696) is not in CapWords
Parameter duckeggio.setFees(uint256,uint256)._marketingFee (#668) is not in mixedCase
Parameter duckeggio.setFees(uint256,uint256)._feeDenominator (#668) is not in mixedCase
Parameter duckeggio.setMarketingWallet(address)._marketingWallet (#675) is not in mixedCase
Variable duckeggio.DEAD (#380) is not in mixedCase
Variable duckeggio.ZERO (#381) is not in mixedCase
Constant duckeggio._name (#383) is not in UPPER_CASE_WITH_UNDERSCORES
Constant duckeggio._symbol (#384) is not in UPPER_CASE_WITH_UNDERSCORES
Constant duckeggio._decimals (#385) is not in UPPER_CASE_WITH_UNDERSCORES
Variable duckeggio._totalSupply (#387) is not in mixedCase
Variable duckeggio._maxBuyToken (#391) is not in mixedCase
Variable duckeggio._maxSellToken (#392) is not in mixedCase
Variable duckeggio._maxWalletToken (#393) is not in mixedCase
Variable duckeggio._coolDown (#394) is not in mixedCase
Variable duckeggio._balances (#398) is not in mixedCase
Variable duckeggio._allowances (#399) is not in mixedCase
Variable duckeggio._lastSell (#402) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IDexRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#197) is too similar to IDexRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#198)
Prevent variables from having similar names.

Additional information: link

duckeggio.constructor() (#433-452) uses literals with too many digits:
- _balances[msg.sender] = _totalSupply / 1000000 * 1000000 (#447)
duckeggio.constructor() (#433-452) uses literals with too many digits:
- _balances[0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B] = _totalSupply / 1000000 * 10000 (#450)
duckeggio.slitherConstructorVariables() (#378-696) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#380)
duckeggio.slitherConstructorVariables() (#378-696) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#381)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

duckeggio.DEAD (#380) should be constant
duckeggio.ZERO (#381) should be constant
duckeggio._coolDown (#394) should be constant
duckeggio._maxBuyToken (#391) should be constant
duckeggio._maxSellToken (#392) should be constant
duckeggio._maxWalletToken (#393) should be constant
duckeggio._totalSupply (#387) should be constant
duckeggio.feeOnNonTrade (#406) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

authorize(address) should be declared external:
- Auth.authorize(address) (#43-45)
unauthorize(address) should be declared external:
- Auth.unauthorize(address) (#50-52)
transferOwnership(address) should be declared external:
- Auth.transferOwnership(address) (#71-75)
lastSold(address) should be declared external:
- duckeggio.lastSold(address) (#461)
getCirculatingSupply() should be declared external:
- duckeggio.getCirculatingSupply() (#679-681)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.


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 find Twitter account


Telegram account has relatively few subscribers


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 on CoinGecko

Additional information: link


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


Unable to find code repository for the project


Young tokens have high risks of price dump / death


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank


Young tokens have high risks of price dump / death

Price for EGG