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ZERI_V2 [CryptoZeroFi] Token

About ZERI_V2

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Token 17 days
white paper

CryptoZeroFi is a combat role-playing NFT game built on the Binance Smart Chain with Zero Fee goal and Metaverse orientation 🔥 PARTNERS: ✅Halving Capital ✅UB Ventures ✅AlphaTrue ✅Binstarter ✅KingdomGame ✅YAYGames ✅DAO KonDR ✅SAFELaunch 🔥AUDITED BY CERTIK 🔥 OFFICIAL GAME (iOS & Android) LAUNCHED 🎁Participants will receive 1 NFT BOX for each 1 BNB participating in Fairlaunch

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Laser Scorebeta Last Audit: 4 August 2022

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

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ZefiBase.emergencySweepToken(address) (#1398-1400) ignores return value by IERC20(_token).transfer(_msgSender(),IERC20(_token).balanceOf(address(this))) (#1399)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link


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


Contract ownership is not renounced (belongs to a wallet)

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#648) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#649)
Prevent variables from having similar names.

Additional information: link

Zefi.ownerAddress (#1420) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#567) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#569) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#599) is not in mixedCase
Function IUniswapV2Router01.WETH() (#643) is not in mixedCase
Parameter ZefiBase.setAntiBotAmount(uint256)._buyMaxAmount (#1391) is not in mixedCase
Parameter ZefiBase.emergencySweepToken(address)._token (#1398) is not in mixedCase
Parameter ZefiBase.emergencySweepNFT(address,uint256)._nft (#1402) is not in mixedCase
Parameter ZefiBase.emergencySweepNFT(address,uint256)._tId (#1402) is not in mixedCase
Constant ZefiBase.botGuardDuration (#1384) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ZefiBase.buyFeeRate (#1386) is not in UPPER_CASE_WITH_UNDERSCORES
Constant ZefiBase.sellFeeRate (#1387) is not in UPPER_CASE_WITH_UNDERSCORES
Parameter Zefi.setFeeAddress(address)._feeAddress (#1520) is not in mixedCase
Parameter Zefi.setFeeExempt(address,bool)._add (#1523) is not in mixedCase
Parameter Zefi.setFeeExempt(address,bool)._val (#1523) is not in mixedCase
Constant Zefi.maxSupply (#1411) is not in UPPER_CASE_WITH_UNDERSCORES
Variable Zefi._feeExempt (#1415) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#21)" inContext (#15-24)
Remove redundant statements if they congest code but offer no value.

Additional information: link

ZefiBase.constructor(string,string).name (#1389) shadows:
- ERC20.name() (#1132-1134) (function)
ZefiBase.constructor(string,string).symbol (#1389) shadows:
- ERC20.symbol() (#1140-1142) (function)
Rename the local variables that shadow another component.

Additional information: link

ZefiBase.setAntiBotAmount(uint256) (#1391) should emit an event for:
- antiBotBuyAmount = _buyMaxAmount (#1391)
Emit an event for critical parameter changes.

Additional information: link

Zefi.setFeeAddress(address)._feeAddress (#1520) lacks a zero-check on :
- feeAddress = _feeAddress (#1520)
Check that the address is not zero.

Additional information: link

Reentrancy in Zefi.constructor() (#1424-1441):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1431-1432)
State variables written after the call(s):
- _feeExempt[_msgSender()] = true (#1436)
- _transferOwnership(ownerAddress) (#1440)
- _owner = newOwner (#94)
- antiBotBuyAmount = 37000 * 10 ** 18 (#1434)
- botGuard = true (#1437)
- feeAddress = _msgSender() (#1435)
- isSetLiquidity = true (#1438)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Zefi.constructor() (#1424-1441):
External calls:
- uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1431-1432)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (#93)
- _transferOwnership(ownerAddress) (#1440)
Apply the check-effects-interactions pattern.

Additional information: link

Zefi._transfer(address,address,uint256) (#1447-1515) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(liquidityTime != 0,ZERI: LIQUIDITY HAVENT SET) (#1456)
- require(bool,string)(block.timestamp != liquidityBlock,ZERI: LIQUIDITY HAVENT SET) (#1458)
- ! isSetLiquidity && (time_since_ld > botGuardDuration) (#1480)
- time_since_ld > 900 (#1474-1477)
- time_since_ld > 600 (#1474-1477)
- time_since_ld > 300 (#1474-1477)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#336-345) uses assembly
- INLINE ASM (#343)
Address._verifyCallResult(bool,bytes,string) (#481-498) uses assembly
- INLINE ASM (#490-493)
Do not use evm assembly.

Additional information: link

Different versions of Solidity is used:
- Version used: ['>=0.6.0<0.8.0', '>=0.6.2<0.8.0', '^0.7.6']
- >=0.6.0<0.8.0 (#3)
- >=0.6.0<0.8.0 (#27)
- >=0.6.0<0.8.0 (#99)
- >=0.6.2<0.8.0 (#313)
- ^0.7.6 (#502)
- >=0.6.0<0.8.0 (#847)
- >=0.6.2<0.8.0 (#871)
- >=0.6.0<0.8.0 (#998)
- >=0.6.0<0.8.0 (#1075)
- ^0.7.6 (#1377)
Use one Solidity version.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (#481-498) is never used and should be removed
Address.functionCall(address,bytes) (#389-391) is never used and should be removed
Address.functionCall(address,bytes,string) (#399-401) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#414-416) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#424-431) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#463-465) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#473-479) is never used and should be removed
Address.functionStaticCall(address,bytes) (#439-441) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#449-455) is never used and should be removed
Address.isContract(address) (#336-345) is never used and should be removed
Address.sendValue(address,uint256) (#363-369) is never used and should be removed
Context._msgData() (#20-23) is never used and should be removed
ERC20._setupDecimals(uint8) (#1355-1357) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#286-289) is never used and should be removed
SafeMath.mod(uint256,uint256) (#248-251) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#306-309) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#120-124) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#156-159) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#166-169) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#141-149) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#131-134) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.6.0<0.8.0 (#3) is too complex
Pragma version>=0.6.0<0.8.0 (#27) is too complex
Pragma version>=0.6.0<0.8.0 (#99) is too complex
Pragma version>=0.6.2<0.8.0 (#313) is too complex
Pragma version>=0.6.0<0.8.0 (#847) is too complex
Pragma version>=0.6.2<0.8.0 (#871) is too complex
Pragma version>=0.6.0<0.8.0 (#998) is too complex
Pragma version>=0.6.0<0.8.0 (#1075) 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

Low level call in Address.sendValue(address,uint256) (#363-369):
- (success) = recipient.call{value: amount}() (#367)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#424-431):
- (success,returndata) = target.call{value: value}(data) (#429)
Low level call in Address.functionStaticCall(address,bytes,string) (#449-455):
- (success,returndata) = target.staticcall(data) (#453)
Low level call in Address.functionDelegateCall(address,bytes,string) (#473-479):
- (success,returndata) = target.delegatecall(data) (#477)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#78-81)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#87-89)
name() should be declared external:
- ERC20.name() (#1132-1134)
symbol() should be declared external:
- ERC20.symbol() (#1140-1142)
decimals() should be declared external:
- ERC20.decimals() (#1157-1159)
totalSupply() should be declared external:
- ERC20.totalSupply() (#1164-1166)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#1171-1173)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#1183-1186)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#1191-1193)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#1202-1205)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#1220-1224)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#1238-1241)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#1257-1260)
setAntiBotAmount(uint256) should be declared external:
- ZefiBase.setAntiBotAmount(uint256) (#1391)
emergencySweepBNB() should be declared external:
- ZefiBase.emergencySweepBNB() (#1394-1396)
emergencySweepToken(address) should be declared external:
- ZefiBase.emergencySweepToken(address) (#1398-1400)
emergencySweepNFT(address,uint256) should be declared external:
- ZefiBase.emergencySweepNFT(address,uint256) (#1402-1404)
burn(uint256) should be declared external:
- Zefi.burn(uint256) (#1443-1445)
setFeeAddress(address) should be declared external:
- Zefi.setFeeAddress(address) (#1520)
setFeeExempt(address,bool) should be declared external:
- Zefi.setFeeExempt(address,bool) (#1523-1528)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract ticker (ZERI_V2) 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.

Holders:


Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.


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


Last post in Twitter was more than 30 days ago


Unable to find Blog account (Reddit or Medium)


Unable to find Youtube account


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 KYC or doxxing proof


Unable to verify that token and website are owned by the same team (no listings + unable to find contract on website)


Unable to verify token contract address on the website


Unable to find audit link on the website


Unable to find token on CoinGecko

Additional information: link


Unable to find token on CoinMarketCap

Additional information: link


Token is not listed at Mobula.Finance

Additional information: link


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


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank


Young tokens have high risks of price dump / death


Young tokens have high risks of price dump / death

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