DBquest is a BSC BEP20 token with an interactive staking platform where you get daily chances to find Airdrops or other rewards. The Platform will be focussing on strategic partnerships with influencers, other projects, companies and other entities. The roadmap includes cross chain 3 dimensional NFT's that will be used in the P2E turn based card game.
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
DBQ._swapBack(uint256) (DBQ.sol#150-195) sends eth to arbitrary user
Dangerous calls:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in DBQ._transfer(address,address,uint256) (DBQ.sol#72-86):
External calls:
- _swapBack(swapAmount) (DBQ.sol#81)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
External calls sending eth:
- _swapBack(swapAmount) (DBQ.sol#81)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
State variables written after the call(s):
- amountAfterTaxes = _takeTax(sender,recipient,amount) (DBQ.sol#83)
- _balances[sender] = senderBalance - amount (BEP20.sol#97)
- _balances[recipient] += amount (BEP20.sol#99)
- super._transfer(sender,recipient,amountAfterTaxes) (DBQ.sol#85)
- _balances[sender] = senderBalance - amount (BEP20.sol#97)
- _balances[recipient] += amount (BEP20.sol#99)
Apply the check-effects-interactions pattern.
Additional information: link
DBQ.recoverBEP20(IBEP20,address) (DBQ.sol#230-235) ignores return value by token.transfer(recipient,amount) (DBQ.sol#233)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.
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.
DBQ._swapBack(uint256) (DBQ.sol#150-195) ignores return value by ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
DBQ._swapBack(uint256) (DBQ.sol#150-195) ignores return value by ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
Ensure that all the return values of the function calls are used.
Additional information: link
BEP20.constructor(address,address).owner (BEP20.sol#17) shadows:
- Ownable.owner() (Ownable.sol#26-28) (function)
BEP20.allowance(address,address).owner (BEP20.sol#52) shadows:
- Ownable.owner() (Ownable.sol#26-28) (function)
BEP20._approve(address,address,uint256).owner (BEP20.sol#104) shadows:
- Ownable.owner() (Ownable.sol#26-28) (function)
DBQ.constructor(address,address,address,address).owner (DBQ.sol#60) shadows:
- Ownable.owner() (Ownable.sol#26-28) (function)
Rename the local variables that shadow another component.
Additional information: link
DBQ.constructor(address,address,address,address).spark (DBQ.sol#60) lacks a zero-check on :
- sparkWallet = spark (DBQ.sol#65)
DBQ.constructor(address,address,address,address).marketing (DBQ.sol#60) lacks a zero-check on :
- marketingWallet = marketing (DBQ.sol#66)
DBQ.recoverBNB(address).recipient (DBQ.sol#223) lacks a zero-check on :
- (sent) = address(recipient).call{gas: transferGas,value: amount}() (DBQ.sol#225)
Check that the address is not zero.
Additional information: link
Reentrancy in DBQ._swapBack(uint256) (DBQ.sol#150-195):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
State variables written after the call(s):
- inSwap = false (DBQ.sol#194)
Reentrancy in DBQ.constructor(address,address,address,address) (DBQ.sol#60-68):
External calls:
- pair = IDEXFactory(ROUTER.factory()).createPair(ROUTER.WETH(),address(this)) (DBQ.sol#61)
State variables written after the call(s):
- _approve(address(this),address(ROUTER),type()(uint256).max) (DBQ.sol#62)
- _allowances[owner][spender] = amount (BEP20.sol#108)
- isMarketMaker[pair] = true (DBQ.sol#63)
- isWhitelisted[saleHost] = true (DBQ.sol#67)
- marketingWallet = marketing (DBQ.sol#66)
- sparkWallet = spark (DBQ.sol#65)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in DBQ._swapBack(uint256) (DBQ.sol#150-195):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
Event emitted after the call(s):
- DepositMarketing(marketingWallet,amountBNBMarketing) (DBQ.sol#177)
Reentrancy in DBQ._swapBack(uint256) (DBQ.sol#150-195):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
Event emitted after the call(s):
- DepositSpark(sparkWallet,amountBNBSpark) (DBQ.sol#179)
Reentrancy in DBQ._swapBack(uint256) (DBQ.sol#150-195):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
Event emitted after the call(s):
- AutoLiquidity(amountBNBLiquidity,liquidityTokens) (DBQ.sol#191)
Reentrancy in DBQ._transfer(address,address,uint256) (DBQ.sol#72-86):
External calls:
- _swapBack(swapAmount) (DBQ.sol#81)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
External calls sending eth:
- _swapBack(swapAmount) (DBQ.sol#81)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (BEP20.sol#101)
- super._transfer(sender,recipient,amountAfterTaxes) (DBQ.sol#85)
- Transfer(sender,recipient,amount) (BEP20.sol#101)
- amountAfterTaxes = _takeTax(sender,recipient,amount) (DBQ.sol#83)
Reentrancy in DBQ.constructor(address,address,address,address) (DBQ.sol#60-68):
External calls:
- pair = IDEXFactory(ROUTER.factory()).createPair(ROUTER.WETH(),address(this)) (DBQ.sol#61)
Event emitted after the call(s):
- Approval(owner,spender,amount) (BEP20.sol#109)
- _approve(address(this),address(ROUTER),type()(uint256).max) (DBQ.sol#62)
Reentrancy in DBQ.recoverBEP20(IBEP20,address) (DBQ.sol#230-235):
External calls:
- token.transfer(recipient,amount) (DBQ.sol#233)
Event emitted after the call(s):
- RecoverBEP20(address(token),recipient,amount) (DBQ.sol#234)
Reentrancy in DBQ.recoverBNB(address) (DBQ.sol#223-228):
External calls:
- (sent) = address(recipient).call{gas: transferGas,value: amount}() (DBQ.sol#225)
Event emitted after the call(s):
- RecoverBNB(recipient,amount) (DBQ.sol#227)
Reentrancy in DBQ.triggerSwapBack(bool,uint256) (DBQ.sol#216-221):
External calls:
- _swapBack(tokenAmount) (DBQ.sol#219)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (DBQ.sol#161-167)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
External calls sending eth:
- _swapBack(tokenAmount) (DBQ.sol#219)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (DBQ.sol#182-189)
Event emitted after the call(s):
- TriggerSwapBack(tokenAmount) (DBQ.sol#220)
Apply the check-effects-interactions pattern.
Additional information: link
DBQ.getDynamicBuyTax() (DBQ.sol#94-103) uses timestamp for comparisons
Dangerous comparisons:
- endingTime > block.timestamp (DBQ.sol#97)
DBQ.getDynamicSellTax() (DBQ.sol#109-118) uses timestamp for comparisons
Dangerous comparisons:
- endingTime > block.timestamp (DBQ.sol#112)
DBQ._takeTax(address,address,uint256) (DBQ.sol#124-131) uses timestamp for comparisons
Dangerous comparisons:
- taxAmount > 0 (DBQ.sol#128)
DBQ._shouldSwapBack(address) (DBQ.sol#146-148) uses timestamp for comparisons
Dangerous comparisons:
- isMarketMaker[recipient] && swapEnabled && balanceOf(address(this)) >= swapThreshold (DBQ.sol#147)
DBQ._swapBack(uint256) (DBQ.sol#150-195) uses timestamp for comparisons
Dangerous comparisons:
- liquidityTokens > 0 (DBQ.sol#181)
DBQ.triggerSwapBack(bool,uint256) (DBQ.sol#216-221) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(balanceOf(address(this)) >= tokenAmount,Insufficient balance) (DBQ.sol#218)
Avoid relying on block.timestamp.
Additional information: link
Pragma version0.8.11 (BEP20.sol#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.11 (DBQ.sol#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.11 (IBEP20.sol#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.11 (IDEX.sol#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.11 (Ownable.sol#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.11 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 DBQ._swapBack(uint256) (DBQ.sol#150-195):
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (DBQ.sol#176)
- (sparkSuccess) = address(sparkWallet).call{gas: transferGas,value: amountBNBSpark}() (DBQ.sol#178)
Low level call in DBQ.recoverBNB(address) (DBQ.sol#223-228):
- (sent) = address(recipient).call{gas: transferGas,value: amount}() (DBQ.sol#225)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Function IDEXRouter.WETH() (IDEX.sol#11) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
getOwner() should be declared external:
- BEP20.getOwner() (BEP20.sol#23-25)
totalSupply() should be declared external:
- BEP20.totalSupply() (BEP20.sol#39-41)
transferFrom(address,address,uint256) should be declared external:
- BEP20.transferFrom(address,address,uint256) (BEP20.sol#61-73)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (BEP20.sol#75-78)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (BEP20.sol#80-88)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Ownable.sol#20-24)
Use the external attribute for functions never called from the contract.
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.
Contract has 0% buy tax and 12% sell tax.
Taxes are high (over 10%) but contract ownership is renounced.
Number of Binance Smart Chain (BSC) token holders is low.
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 contract audit
Unable to find audit link on the website
Unable to find whitepaper link on the website
Unable to find token on CoinHunt
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
Token has no active CoinGecko listing / rank
Young tokens have high risks of price dump / death
Token has relatively low CoinMarketCap rank
Twitter account has relatively few followers
Unable to find Blog account (Reddit or Medium)
Unable to find Discord account