MTK [METAKINGS] Token

MetaKings.withdrawFunc(address,address) (MetaKings.sol#69-71) ignores return value by ERC20Token(token).transfer(recipient,ERC20Token(token).balanceOf(address(this))) (MetaKings.sol#70)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Contract creator or owner is blacklisted for past scams

MetaKings._safeTransferBNB(address,uint256) (MetaKings.sol#92-95) sends eth to arbitrary user
Dangerous calls:
- (success) = to.call{value: value}(new bytes(0)) (MetaKings.sol#93)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

ERC20Token._enableFee (ERC20Token.sol#63) is never initialized. It is used in:
- ERC20Token.enableFee() (ERC20Token.sol#143-145)
- ERC20Token._transfer(address,address,uint256) (ERC20Token.sol#283-309)
ERC20Token.whiteList (ERC20Token.sol#67) is never initialized. It is used in:
- ERC20Token._transfer(address,address,uint256) (ERC20Token.sol#283-309)
ERC20Token._transferBurnAddresses (ERC20Token.sol#61) is never initialized. It is used in:
- ERC20Token._transfer(address,address,uint256) (ERC20Token.sol#283-309)
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

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.

ERC20Token._transfer(address,address,uint256) (ERC20Token.sol#283-309) contains a tautology or contradiction:
- _balances[sender].sub(amount).sub(receiedAmount) < 0 (ERC20Token.sol#299)
Fix the incorrect comparison by changing the value type or the comparison.

Additional information: link

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

Contract ownership is not renounced (belongs to a wallet)

MetaKings._writenewCheckpoint(address,uint32,uint256,uint256) (MetaKings.sol#236-257) uses a dangerous strict equality:
- nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber (MetaKings.sol#248)
Don't use strict equality to determine if an account has enough Ether or tokens.

Additional information: link

ERC20Token.constructor(string,string).name (ERC20Token.sol#77) shadows:
- ERC20Token.name() (ERC20Token.sol#101-103) (function)
- IERC20.name() (IERC20.sol#34) (function)
ERC20Token.allowance(address,address).owner (ERC20Token.sol#163) shadows:
- Ownable.owner() (Ownable.sol#50-52) (function)
ERC20Token._approve(address,address,uint256).owner (ERC20Token.sol#360) shadows:
- Ownable.owner() (Ownable.sol#50-52) (function)
ERC20Token.constructor(string,string).symbol (ERC20Token.sol#77) shadows:
- ERC20Token.symbol() (ERC20Token.sol#115-117) (function)
- IERC20.symbol() (IERC20.sol#29) (function)
Rename the local variables that shadow another component.

Additional information: link

MetaKings._movePreviousDelegates(address,address,uint256) (MetaKings.sol#216-234) is never used and should be removed
Address.sendValue(address,uint256) (Address.sol#63-69) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (Address.sol#114-116) is never used and should be removed
SafeMath.sqrt(uint256) (SafeMath.sol#187-198) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (Address.sol#173-179) is never used and should be removed
MetaKings.safe32(uint256,string) (MetaKings.sol#259-262) is never used and should be removed
MetaKings._delleggate(address,address) (MetaKings.sol#204-214) is never used and should be removed
Address.functionDelegateCall(address,bytes) (Address.sol#163-165) is never used and should be removed
SafeMath.min(uint256,uint256) (SafeMath.sol#182-184) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (SafeMath.sol#173-180) is never used and should be removed
MetaKings._writenewCheckpoint(address,uint32,uint256,uint256) (MetaKings.sol#236-257) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (Address.sol#124-131) is never used and should be removed
Context._msgData() (Context.sol#34-37) is never used and should be removed
Address.functionStaticCall(address,bytes) (Address.sol#139-141) is never used and should be removed
SafeMath.mod(uint256,uint256) (SafeMath.sol#157-159) is never used and should be removed
ERC20Token._burnFrom(address,uint256) (ERC20Token.sol#377-384) is never used and should be removed
Address._verifyCallResult(bool,bytes,string) (Address.sol#181-198) is never used and should be removed
Address.functionCall(address,bytes,string) (Address.sol#99-101) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (Address.sol#149-155) is never used and should be removed
Address.functionCall(address,bytes) (Address.sol#89-91) is never used and should be removed
Remove unused functions.

Additional information: link

ERC20Token.setLockContract(address).lockContract (ERC20Token.sol#259) lacks a zero-check on :
- LOCK_CONTRACT = lockContract (ERC20Token.sol#260)
ERC20Token.dev(address)._devaddr (ERC20Token.sol#86) lacks a zero-check on :
- devaddr = _devaddr (ERC20Token.sol#88)
Check that the address is not zero.

Additional information: link

ERC20Token._cap (ERC20Token.sol#59) is never used in MetaKings (MetaKings.sol#32-274)
Remove unused state variables.

Additional information: link

ERC20Token._cap (ERC20Token.sol#59) should be constant
ERC20Token._enableFee (ERC20Token.sol#63) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

Different versions of Solidity are used:
- Version used: ['0.6.12', '>=0.4.0', '>=0.4.24<0.8.0', '>=0.6.2<0.8.0']
- >=0.6.2<0.8.0 (Address.sol#13)
- >=0.4.0 (Context.sol#13)
- >=0.4.0 (ERC20Token.sol#12)
- >=0.4.0 (IERC20.sol#13)
- 0.6.12 (ILockContract.sol#12)
- 0.6.12 (ISellToken.sol#12)
- >=0.4.24<0.8.0 (Initializable.sol#14)
- 0.6.12 (MetaKings.sol#25)
- >=0.4.0 (Ownable.sol#12)
- >=0.4.0 (SafeMath.sol#13)
Use one Solidity version.

Additional information: link

Low level call in MetaKings._safeTransferBNB(address,uint256) (MetaKings.sol#92-95):
- (success) = to.call{value: value}(new bytes(0)) (MetaKings.sol#93)
Low level call in Address.sendValue(address,uint256) (Address.sol#63-69):
- (success) = recipient.call{value: amount}() (Address.sol#67)
Low level call in Address.functionDelegateCall(address,bytes,string) (Address.sol#173-179):
- (success,returndata) = target.delegatecall(data) (Address.sol#177)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (Address.sol#124-131):
- (success,returndata) = target.call{value: value}(data) (Address.sol#129)
Low level call in Address.functionStaticCall(address,bytes,string) (Address.sol#149-155):
- (success,returndata) = target.staticcall(data) (Address.sol#153)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable ERC20Token.LOCK_CONTRACT (ERC20Token.sol#66) is not in mixedCase
Parameter ERC20Token.dev(address)._devaddr (ERC20Token.sol#86) is not in mixedCase
Variable MetaKings._delleggates (MetaKings.sol#104) is not in mixedCase
Variable MetaKings.DOMAIN_SEPARATOR (MetaKings.sol#38) is not in mixedCase
Variable MetaKings._nonces (MetaKings.sol#34) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

transferBurnRate() should be declared external:
- ERC20Token.transferBurnRate() (ERC20Token.sol#136-138)
transferFrom(address,address,uint256) should be declared external:
- ERC20Token.transferFrom(address,address,uint256) (ERC20Token.sol#191-203)
totalSupply() should be declared external:
- ERC20Token.totalSupply() (ERC20Token.sol#122-124)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (Ownable.sol#69-72)
decreaseAllowance(address,uint256) should be declared external:
- ERC20Token.decreaseAllowance(address,uint256) (ERC20Token.sol#236-243)
withdrawBNB(address,uint256) should be declared external:
- MetaKings.withdrawBNB(address,uint256) (MetaKings.sol#79-85)
enableFee() should be declared external:
- ERC20Token.enableFee() (ERC20Token.sol#143-145)
symbol() should be declared external:
- ERC20Token.symbol() (ERC20Token.sol#115-117)
dev(address) should be declared external:
- ERC20Token.dev(address) (ERC20Token.sol#86-89)
burn(uint256) should be declared external:
- ERC20Token.burn(uint256) (ERC20Token.sol#264-267)
setLockContract(address) should be declared external:
- ERC20Token.setLockContract(address) (ERC20Token.sol#259-262)
deploy(uint256) should be declared external:
- ERC20Token.deploy(uint256) (ERC20Token.sol#253-257)
increaseAllowance(address,uint256) should be declared external:
- ERC20Token.increaseAllowance(address,uint256) (ERC20Token.sol#217-220)
decimals() should be declared external:
- ERC20Token.decimals() (ERC20Token.sol#108-110)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (Ownable.sol#78-80)
withdrawFunc(address,address) should be declared external:
- MetaKings.withdrawFunc(address,address) (MetaKings.sol#69-71)
approve(address,uint256) should be declared external:
- ERC20Token.approve(address,uint256) (ERC20Token.sol#174-177)
bootswitch() should be declared external:
- MetaKings.bootswitch() (MetaKings.sol#43-62)
allowance(address,address) should be declared external:
- ERC20Token.allowance(address,address) (ERC20Token.sol#163-165)
transfer(address,uint256) should be declared external:
- ERC20Token.transfer(address,uint256) (ERC20Token.sol#155-158)
Use the external attribute for functions never called from the contract.

Additional information: link

Pragma version>=0.6.2<0.8.0 (Address.sol#13) is too complex
Pragma version>=0.4.0 (Ownable.sol#12) allows old versions
Pragma version>=0.4.0 (ERC20Token.sol#12) allows old versions
Pragma version>=0.4.0 (Context.sol#13) allows old versions
Pragma version>=0.4.0 (SafeMath.sol#13) allows old versions
Pragma version>=0.4.0 (IERC20.sol#13) allows old versions
Pragma version>=0.4.24<0.8.0 (Initializable.sol#14) 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

Redundant expression "this (Context.sol#35)" inContext (Context.sol#25-39)
Remove redundant statements if they congest code but offer no value.

Additional information: link

MetaKings.getChainId() (MetaKings.sol#264-271) uses assembly
- INLINE ASM (MetaKings.sol#268)
Address._verifyCallResult(bool,bytes,string) (Address.sol#181-198) uses assembly
- INLINE ASM (Address.sol#190-193)
Address.isContract(address) (Address.sol#36-45) uses assembly
- INLINE ASM (Address.sol#43)
Do not use evm assembly.

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

Average 30d PancakeSwap volume is low.

Average PancakeSwap trading volume, liqudity, number of swaps are low. Token seems to be inactive.

Unable to find token on CoinHunt

Additional information: link

Token is not listed at Mobula.Finance

Additional information: link

Token is marked as scam (rug pull, honeypot, phishing, etc.)

Additional information: link

Token has no active CoinGecko listing / rank

Token has relatively low CoinMarketCap rank