NFT-Starter (NST) was originated as a pioneer created in more favorable, more consistent, more healthy development environment for the association between the new DeFi and NFT ecosystem. Our long-term vision for NFT-Starter is developing an NFT ecosystem based on Binance Smart Chain because we can slash gas fees to a minimum with more scalability and reliability. The plan to execute this vision starts with creating a prestigious, real-time, high-throughput experience in conjunction with launchpad governed by community. NFT-Starter platform positions itself with a highly digitalized, secure and accessible system, which supports the evolution of NFTs’ projects on the path to success. NFT-Starter ecosystem could create favorable conditions for the community to participate in NFT marketplace to raise capitals for NFT projects and value NFT assets in a more transparent and more complete manner. Members holding at least 2,000,000 NST Tokens can participate in the future IDOs and insurance pool. The role of NFT-Starter is as a provider of technology to have platform exclusively governed by NFT-Starter community. There are multiple benefits for NST holders such as earning BNB passively , IDO participation, voting power, farming (liquidity pool), earning rating star and many benefits coming in the future.
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
NST.addLiquidity(uint256,uint256) (#1158-1171) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in NST._transfer(address,address,uint256) (#1045-1091):
External calls:
- swapAndLiquify(contractTokenBalance) (#1078)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1149-1155)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1078)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#1090)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#989)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1199)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1208)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1219)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1200)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#919)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1210)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1220)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#921)
- _tokenTransfer(from,to,amount,takeFee) (#1090)
- _rTotal = _rTotal.sub(rFee) (#944)
- _tokenTransfer(from,to,amount,takeFee) (#1090)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#991)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#918)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1218)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1209)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#920)
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.
NST.addLiquidity(uint256,uint256) (#1158-1171) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
Ensure that all the return values of the function calls are used.
Additional information: link
NST._approve(address,address,uint256).owner (#1037) shadows:
- Ownable.owner() (#436-438) (function)
Rename the local variables that shadow another component.
Additional information: link
Ownable.setCharityAddress(address) (#481-485) should emit an event for:
- _charity = charityAddress (#484)
Emit an event for critical parameter changes.
Additional information: link
NST.setMaxTxAmount(uint256) (#1239-1241) should emit an event for:
- _maxTxAmount = maxTxAmount_ (#1240)
Emit an event for critical parameter changes.
Additional information: link
Ownable.setLockedLiquidityAddress(address).liquidityAddress (#487) lacks a zero-check on :
- _lockedLiquidity = liquidityAddress (#490)
Check that the address is not zero.
Additional information: link
Reentrancy in NST.transferFrom(address,address,uint256) (#824-828):
External calls:
- _transfer(sender,recipient,amount) (#825)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1149-1155)
External calls sending eth:
- _transfer(sender,recipient,amount) (#825)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#826)
- _allowances[owner][spender] = amount (#1041)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in NST.transferFrom(address,address,uint256) (#824-828):
External calls:
- _transfer(sender,recipient,amount) (#825)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1149-1155)
External calls sending eth:
- _transfer(sender,recipient,amount) (#825)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,lockedLiquidity(),block.timestamp) (#1163-1170)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1042)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#826)
Apply the check-effects-interactions pattern.
Additional information: link
Address._functionCallWithValue(address,bytes,uint256,string) (#380-401) uses assembly
- INLINE ASM (#393-396)
Do not use evm assembly.
Additional information: link
SafeMath.mod(uint256,uint256,string) (#248-251) is never used and should be removed
Remove unused functions.
Additional information: link
NST._previousLiquidityFee (#737) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
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
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#380-401):
- (success,returndata) = target.call{value: weiValue}(data) (#384)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Variable NST._maxTxAmount (#747) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#260)" inContext (#254-263)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Variable NST._transferBothExcluded(address,address,uint256).rTransferAmount (#917) is too similar to NST._getValues(uint256).tTransferAmount (#949)
Prevent variables from having similar names.
Additional information: link
NST.slitherConstructorVariables() (#709-1247) uses literals with too many digits:
- _tTotal = 100000 * 10 ** 6 * 10 ** 9 (#724)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
Ownable._burnAddress (#419) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
setRouter(address) should be declared external:
- NST.setRouter(address) (#1243-1245)
Use the external attribute for functions never called from the contract.
Additional information: link
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 verify token contract address on the website
Unable to find audit 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 scam / price dump / death
Young tokens have high risks of scam / price dump / death
Token has a considerable age, but social accounts / website are missing or have few users
Young tokens have high risks of price dump / death
Token has relatively low CoinGecko rank
Twitter account link seems to be invalid
Unable to find Youtube account
Unable to find Discord account