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$NEXUS [Nexus] Token

About $NEXUS

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Token 15 months
CoinMarketCap 15 months
white paper

Nexus Folio: Cross-chain multi-wallet token/NFT tracker.

Laser Scorebeta Last Audit: 30 November 2021

report
Token is either risky or in presale. For presale 30+ is a fine score.

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

Contract ticker ($NEXUS) 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.

Nexus._approve(address,address,uint256).owner (contracts/Nexus.sol#330) shadows:
- Ownable.owner() (contracts/Ownable.sol#32-34) (function)
Rename the local variables that shadow another component.

Additional information: link

Nexus.setMaxTxAmount(uint256) (contracts/Nexus.sol#255-257) should emit an event for:
- maxTxAmount = newMaxTxAmount (contracts/Nexus.sol#256)
Emit an event for critical parameter changes.

Additional information: link

Nexus.setPresaleAddress(address).presale (contracts/Nexus.sol#285) lacks a zero-check on :
- presaleAddress = presale (contracts/Nexus.sol#286)
Check that the address is not zero.

Additional information: link

Reentrancy in Nexus.setRouterAddress(address) (contracts/Nexus.sol#259-277):
External calls:
- uniswapV2Pair = factory.createPair(address(this),_newPancakeRouter.WETH()) (contracts/Nexus.sol#266-269)
State variables written after the call(s):
- uniswapV2Router = _newPancakeRouter (contracts/Nexus.sol#274)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Nexus.setRouterAddress(address) (contracts/Nexus.sol#259-277):
External calls:
- uniswapV2Pair = factory.createPair(address(this),_newPancakeRouter.WETH()) (contracts/Nexus.sol#266-269)
Event emitted after the call(s):
- UpdatePancakeRouter(uniswapV2Router,uniswapV2Pair) (contracts/Nexus.sol#276)
Apply the check-effects-interactions pattern.

Additional information: link

Nexus._transfer(address,address,uint256) (contracts/Nexus.sol#341-423) uses timestamp for comparisons
Dangerous comparisons:
- onlyVipMarket && openAllMarketTime >= block.timestamp (contracts/Nexus.sol#366)
- require(bool,string)(_timestamp - lastSwapTime >= lockedBetweenSells,Lock time has not been released from last swap) (contracts/Nexus.sol#375-378)
- onlyVipMarket && openAllMarketTime >= block.timestamp (contracts/Nexus.sol#390)
- require(bool,string)(_timestamp - lastSwapTime_scope_0 >= lockedBetweenBuys,Lock time has not been released from last swap) (contracts/Nexus.sol#401-404)
Avoid relying on block.timestamp.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (contracts/Address.sol#43-60) uses assembly
- INLINE ASM (contracts/Address.sol#52-55)
Do not use evm assembly.

Additional information: link

SafeMath.mod(uint256,uint256,string) (contracts/SafeMath.sol#53-56) is never used and should be removed
Remove unused functions.

Additional information: link

Nexus._previousMarketFee (contracts/Nexus.sol#36) is set pre-construction with a non-constant function or state variable:
- marketFee
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

solc-0.8.4 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 Address._functionCallWithValue(address,bytes,uint256,string) (contracts/Address.sol#43-60):
- (success,returndata) = target.call{value: weiValue}(data) (contracts/Address.sol#46)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Constant Nexus._total (contracts/Nexus.sol#29) is not in UPPER_CASE_WITH_UNDERSCORES
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (contracts/Context.sol#12)" inContext (contracts/Context.sol#6-15)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (contracts/IUniswapV2Router01.sol#13) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (contracts/IUniswapV2Router01.sol#14)
Prevent variables from having similar names.

Additional information: link

Nexus.slitherConstructorConstantVariables() (contracts/Nexus.sol#12-467) uses literals with too many digits:
- _total = 10000000 * 10 ** _decimals (contracts/Nexus.sol#29)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (contracts/Ownable.sol#59-62)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Token is deployed only at one blockchain


Unable to find PancakeSwap trading pair to compute liquidity.


Unable to find PancakeSwap trading pair to compute number of swaps.


Twitter account link seems to be invalid


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 token on CoinHunt

Additional information: link


Young tokens have high risks of 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

Price for $NEXUS