STEP Token

Step._swapBack() (#321-362) sends eth to arbitrary user
Dangerous calls:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Step.recoverBEP20(IBEP20,address) (#393-398) ignores return value by token.transfer(recipient,amount) (#396)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Reentrancy in Step._transfer(address,address,uint256) (#264-275):
External calls:
- _swapBack() (#271)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
External calls sending eth:
- _swapBack() (#271)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
State variables written after the call(s):
- amountAfterTaxes = _takeTax(sender,recipient,amount) (#272)
- _balances[sender] = senderBalance - amount (#174)
- _balances[recipient] += amount (#175)
- super._transfer(sender,recipient,amountAfterTaxes) (#274)
- _balances[sender] = senderBalance - amount (#174)
- _balances[recipient] += amount (#175)
Apply the check-effects-interactions pattern.

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 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.

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.

Contract ownership is not renounced (belongs to a wallet)

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.

Function IDexRouter.WETH() (#13) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Step._shouldSwapBack(address) (#317-319) uses timestamp for comparisons
Dangerous comparisons:
- isMarketMaker[recipient] && swapEnabled && balanceOf(address(this)) >= swapThreshold (#318)
Step._takeTax(address,address,uint256) (#294-301) uses timestamp for comparisons
Dangerous comparisons:
- taxAmount > 0 (#298)
Step.getDynamicSellTax() (#279-288) uses timestamp for comparisons
Dangerous comparisons:
- endingTime > block.timestamp (#282)
Avoid relying on block.timestamp.

Additional information: link

Reentrancy in Step.triggerSwapBack() (#381-384):
External calls:
- _swapBack() (#382)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
External calls sending eth:
- _swapBack() (#382)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
Event emitted after the call(s):
- TriggerSwapBack() (#383)
Reentrancy in Step._transfer(address,address,uint256) (#264-275):
External calls:
- _swapBack() (#271)
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
External calls sending eth:
- _swapBack() (#271)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
Event emitted after the call(s):
- Transfer(sender,recipient,amount) (#177)
- super._transfer(sender,recipient,amountAfterTaxes) (#274)
- Transfer(sender,recipient,amount) (#177)
- amountAfterTaxes = _takeTax(sender,recipient,amount) (#272)
Reentrancy in Step.recoverBEP20(IBEP20,address) (#393-398):
External calls:
- token.transfer(recipient,amount) (#396)
Event emitted after the call(s):
- RecoverBEP20(address(token),amount) (#397)
Reentrancy in Step._swapBack() (#321-362):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
Event emitted after the call(s):
- DepositRewards(rewardWallet,amountBNBRewards) (#348)
Reentrancy in Step._swapBack() (#321-362):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
- ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
Event emitted after the call(s):
- AutoLiquidity(amountBNBLiquidity,liquidityTokens) (#360)
Reentrancy in Step.recoverBNB() (#386-391):
External calls:
- (sent) = address(marketingWallet).call{gas: transferGas,value: amount}() (#388)
Event emitted after the call(s):
- RecoverBNB(amount) (#390)
Reentrancy in Step._swapBack() (#321-362):
External calls:
- ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
External calls sending eth:
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
Event emitted after the call(s):
- DepositMarketing(marketingWallet,amountBNBMarketing) (#346)
Apply the check-effects-interactions pattern.

Additional information: link

Step._swapBack() (#321-362) ignores return value by ROUTER.swapExactTokensForETH(amountToSwap,0,path,address(this),block.timestamp) (#330-336)
Step._swapBack() (#321-362) ignores return value by ROUTER.addLiquidityETH{value: amountBNBLiquidity}(address(this),liquidityTokens,0,0,address(this),block.timestamp) (#351-358)
Ensure that all the return values of the function calls are used.

Additional information: link

BEP20.allowance(address,address).owner (#136) shadows:
- Ownable.owner() (#59-61) (function)
BEP20.constructor(address,address).owner (#102) shadows:
- Ownable.owner() (#59-61) (function)
Step.constructor(address,address,address).owner (#252) shadows:
- Ownable.owner() (#59-61) (function)
BEP20._approve(address,address,uint256).owner (#180) shadows:
- Ownable.owner() (#59-61) (function)
Rename the local variables that shadow another component.

Additional information: link

Step.constructor(address,address,address).rewards (#252) lacks a zero-check on :
- rewardWallet = rewards (#257)
Step.constructor(address,address,address).marketing (#252) lacks a zero-check on :
- marketingWallet = marketing (#258)
Check that the address is not zero.

Additional information: link

solc-0.8.10 is not recommended for deployment
Pragma version0.8.10 (#68) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.10 (#193) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.10 (#36) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.10 (#5) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
Pragma version0.8.10 (#89) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
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 Step.recoverBNB() (#386-391):
- (sent) = address(marketingWallet).call{gas: transferGas,value: amount}() (#388)
Low level call in Step._swapBack() (#321-362):
- (marketingSuccess) = address(marketingWallet).call{gas: transferGas,value: amountBNBMarketing}() (#345)
- (rewardSuccess) = address(rewardWallet).call{gas: transferGas,value: amountBNBRewards}() (#347)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

getOwner() should be declared external:
- BEP20.getOwner() (#107-109)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#53-57)
increaseAllowance(address,uint256) should be declared external:
- BEP20.increaseAllowance(address,uint256) (#155-158)
decreaseAllowance(address,uint256) should be declared external:
- BEP20.decreaseAllowance(address,uint256) (#160-166)
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 number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

Token is deployed only at one blockchain

Contract has 10% buy tax and 10% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.

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