MotorGo is a tokenized sports application based on web3. Users can purchase NFTs in the form of virtual motorbikes which are linked to real riding activities. By riding around, users will earn our tokens which have real value in the exchanges
Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains
Contract ownership is not renounced (belongs to a wallet)
MGTO.setAddressTaxFee(address)._addressTaxFee (#1011) lacks a zero-check on :
- addressTaxFee = _addressTaxFee (#1012)
Check that the address is not zero.
Additional information: link
Reentrancy in MGTO._transfer(address,address,uint256) (#1023-1039):
External calls:
- taxFee = antiBot.protect(sender,recipient,amount) (#1029)
State variables written after the call(s):
- super._transfer(sender,addressTaxFee,taxFee) (#1032)
- _balances[from] = fromBalance - amount (#708)
- _balances[to] += amount (#710)
- super._transfer(sender,recipient,amount - taxFee) (#1035)
- _balances[from] = fromBalance - amount (#708)
- _balances[to] += amount (#710)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in MGTO._transfer(address,address,uint256) (#1023-1039):
External calls:
- taxFee = antiBot.protect(sender,recipient,amount) (#1029)
Event emitted after the call(s):
- Transfer(from,to,amount) (#712)
- super._transfer(sender,recipient,amount - taxFee) (#1035)
- Transfer(from,to,amount) (#712)
- super._transfer(sender,addressTaxFee,taxFee) (#1032)
Apply the check-effects-interactions pattern.
Additional information: link
Address.verifyCallResult(bool,bytes,string) (#203-223) uses assembly
- INLINE ASM (#215-218)
Do not use evm assembly.
Additional information: link
Different versions of Solidity is used:
- Version used: ['^0.8.0', '^0.8.1']
- ^0.8.1 (#6)
- ^0.8.0 (#231)
- ^0.8.0 (#316)
- ^0.8.0 (#346)
- ^0.8.0 (#447)
- ^0.8.0 (#474)
- ^0.8.0 (#859)
- ^0.8.0 (#900)
- ^0.8.0 (#976)
Use one Solidity version.
Additional information: link
Address.functionCall(address,bytes) (#87-89) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#116-122) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#176-178) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#186-195) is never used and should be removed
Address.functionStaticCall(address,bytes) (#149-151) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#159-168) is never used and should be removed
Address.sendValue(address,uint256) (#62-67) is never used and should be removed
Context._msgData() (#464-466) is never used and should be removed
SafeERC20.safeApprove(IERC20,address,uint256) (#386-399) is never used and should be removed
SafeERC20.safeDecreaseAllowance(IERC20,address,uint256) (#410-421) is never used and should be removed
SafeERC20.safeIncreaseAllowance(IERC20,address,uint256) (#401-408) is never used and should be removed
SafeERC20.safeTransferFrom(IERC20,address,address,uint256) (#370-377) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version^0.8.1 (#6) allows old versions
Pragma version^0.8.0 (#231) allows old versions
Pragma version^0.8.0 (#316) allows old versions
Pragma version^0.8.0 (#346) allows old versions
Pragma version^0.8.0 (#447) allows old versions
Pragma version^0.8.0 (#474) allows old versions
Pragma version^0.8.0 (#859) allows old versions
Pragma version^0.8.0 (#900) allows old versions
Pragma version^0.8.0 (#976) allows old versions
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) (#62-67):
- (success) = recipient.call{value: amount}() (#65)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#130-141):
- (success,returndata) = target.call{value: value}(data) (#139)
Low level call in Address.functionStaticCall(address,bytes,string) (#159-168):
- (success,returndata) = target.staticcall(data) (#166)
Low level call in Address.functionDelegateCall(address,bytes,string) (#186-195):
- (success,returndata) = target.delegatecall(data) (#193)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Parameter MGTO.setAntiBotAddress(address)._antiBot (#1002) is not in mixedCase
Parameter MGTO.setAntiBnotEnabled(bool)._enabled (#1006) is not in mixedCase
Parameter MGTO.setAddressTaxFee(address)._addressTaxFee (#1011) is not in mixedCase
Parameter MGTO.withdrawWrongTransferToken(address,uint256)._token (#1015) is not in mixedCase
Parameter MGTO.withdrawWrongTransferToken(address,uint256)._amount (#1015) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Variable MGTO.TOTAL_SUPPLY (#994) is too similar to ERC20._totalSupply (#509)
Prevent variables from having similar names.
Additional information: link
name() should be declared external:
- ERC20.name() (#531-533)
symbol() should be declared external:
- ERC20.symbol() (#539-541)
decimals() should be declared external:
- ERC20.decimals() (#556-558)
totalSupply() should be declared external:
- ERC20.totalSupply() (#563-565)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#570-572)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#582-586)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#605-609)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#627-636)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#650-654)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#670-679)
burn(uint256) should be declared external:
- ERC20Burnable.burn(uint256) (#874-876)
burnFrom(address,uint256) should be declared external:
- ERC20Burnable.burnFrom(address,uint256) (#889-892)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#949-951)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#957-960)
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 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 whitepaper 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
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
Token has no active CoinMarketCap listing / rank
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account
Unable to find Discord account
Twitter account has few posts