BMBTOPGOAL [Binance NFT Mystery Box-TopGoal] Token

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

BRC721._checkOnERC721Received(address,address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#367-386) ignores return value by IERC721Receiver(to).onERC721Received(_msgSender(),from,tokenId,_data) (contracts/bsc-nft-factory/contracts/BRC721.sol#371-382)
Ensure that all the return values of the function calls are used.

Additional information: link

BRC721.constructor(address,string,string).admin_ (contracts/bsc-nft-factory/contracts/BRC721.sol#49) lacks a zero-check on :
- _admin = admin_ (contracts/bsc-nft-factory/contracts/BRC721.sol#50)
Check that the address is not zero.

Additional information: link

Variable 'BRC721._checkOnERC721Received(address,address,uint256,bytes).retval (contracts/bsc-nft-factory/contracts/BRC721.sol#371)' in BRC721._checkOnERC721Received(address,address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#367-386) potentially used before declaration: retval == IERC721Receiver(to).onERC721Received.selector (contracts/bsc-nft-factory/contracts/BRC721.sol#372)
Variable 'BRC721._checkOnERC721Received(address,address,uint256,bytes).reason (contracts/bsc-nft-factory/contracts/BRC721.sol#373)' in BRC721._checkOnERC721Received(address,address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#367-386) potentially used before declaration: revert(uint256,uint256)(32 + reason,mload(uint256)(reason)) (contracts/bsc-nft-factory/contracts/BRC721.sol#379)
Variable 'BRC721._checkOnERC721Received(address,address,uint256,bytes).reason (contracts/bsc-nft-factory/contracts/BRC721.sol#373)' in BRC721._checkOnERC721Received(address,address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#367-386) potentially used before declaration: reason.length == 0 (contracts/bsc-nft-factory/contracts/BRC721.sol#374)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#171-188) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#180-183)
Address.isContract(address) (@openzeppelin/contracts/utils/Address.sol#26-35) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#33)
BRC721._checkOnERC721Received(address,address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#367-386) uses assembly
- INLINE ASM (contracts/bsc-nft-factory/contracts/BRC721.sol#378-380)
Do not use evm assembly.

Additional information: link

Different versions of Solidity are used:
- Version used: ['0.8.0', '^0.8.0']
- ^0.8.0 (@openzeppelin/contracts/security/Pausable.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC721/IERC721.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/Address.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/Context.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/Strings.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/introspection/ERC165.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/introspection/IERC165.sol#3)
- 0.8.0 (contracts/bsc-nft-factory/contracts/BNFT.sol#2)
- 0.8.0 (contracts/bsc-nft-factory/contracts/BRC721.sol#2)
- 0.8.0 (contracts/bsc-nft-factory/contracts/BRC721Enumerable.sol#2)
Use one Solidity version.

Additional information: link

Strings.toHexString(uint256,uint256) (@openzeppelin/contracts/utils/Strings.sol#55-65) is never used and should be removed
Address.sendValue(address,uint256) (@openzeppelin/contracts/utils/Address.sol#53-59) is never used and should be removed
BRC721._baseURI() (contracts/bsc-nft-factory/contracts/BRC721.sol#127-129) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (@openzeppelin/contracts/utils/Address.sol#104-106) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#163-169) is never used and should be removed
Strings.toHexString(uint256) (@openzeppelin/contracts/utils/Strings.sol#39-50) is never used and should be removed
Address.functionDelegateCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#153-155) is never used and should be removed
BRC721._safeMint(address,uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#258-260) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (@openzeppelin/contracts/utils/Address.sol#114-121) is never used and should be removed
Context._msgData() (@openzeppelin/contracts/utils/Context.sol#20-23) is never used and should be removed
BNFT._baseURI() (contracts/bsc-nft-factory/contracts/BNFT.sol#22-24) is never used and should be removed
Address.functionStaticCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#129-131) is never used and should be removed
Address._verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#171-188) is never used and should be removed
BRC721._burn(uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#305-318) is never used and should be removed
BRC721._safeMint(address,uint256,bytes) (contracts/bsc-nft-factory/contracts/BRC721.sol#266-269) is never used and should be removed
Address.functionCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#89-91) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#139-145) is never used and should be removed
Address.functionCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#79-81) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.0 (@openzeppelin/contracts/utils/Context.sol#3) allows old versions
Pragma version0.8.0 (contracts/bsc-nft-factory/contracts/BNFT.sol#2) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/introspection/IERC165.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol#3) allows old versions
Pragma version0.8.0 (contracts/bsc-nft-factory/contracts/BRC721Enumerable.sol#2) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/introspection/ERC165.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/Strings.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/security/Pausable.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC721/IERC721.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/Address.sol#3) allows old versions
solc-0.8.0 is not recommended for deployment
Pragma version0.8.0 (contracts/bsc-nft-factory/contracts/BRC721.sol#2) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol#3) 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) (@openzeppelin/contracts/utils/Address.sol#53-59):
- (success) = recipient.call{value: amount}() (@openzeppelin/contracts/utils/Address.sol#57)
Low level call in Address.functionDelegateCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#163-169):
- (success,returndata) = target.delegatecall(data) (@openzeppelin/contracts/utils/Address.sol#167)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (@openzeppelin/contracts/utils/Address.sol#114-121):
- (success,returndata) = target.call{value: value}(data) (@openzeppelin/contracts/utils/Address.sol#119)
Low level call in Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#139-145):
- (success,returndata) = target.staticcall(data) (@openzeppelin/contracts/utils/Address.sol#143)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Constant Strings.alphabet (@openzeppelin/contracts/utils/Strings.sol#9) is not in UPPER_CASE_WITH_UNDERSCORES
Parameter BRC721.safeTransferFrom(address,address,uint256,bytes)._data (contracts/bsc-nft-factory/contracts/BRC721.sol#194) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (@openzeppelin/contracts/utils/Context.sol#21)" inContext (@openzeppelin/contracts/utils/Context.sol#15-24)
Remove redundant statements if they congest code but offer no value.

Additional information: link

safeTransferFrom(address,address,uint256) should be declared external:
- BRC721.safeTransferFrom(address,address,uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#186-188)
tokenByIndex(uint256) should be declared external:
- BRC721Enumerable.tokenByIndex(uint256) (contracts/bsc-nft-factory/contracts/BRC721Enumerable.sol#47-50)
admin() should be declared external:
- BRC721.admin() (contracts/bsc-nft-factory/contracts/BRC721.sol#119-121)
transferFrom(address,address,uint256) should be declared external:
- BRC721.transferFrom(address,address,uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#175-181)
tokenURI(uint256) should be declared external:
- BNFT.tokenURI(uint256) (contracts/bsc-nft-factory/contracts/BNFT.sol#30-37)
- BRC721.tokenURI(uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#107-114)
approve(address,uint256) should be declared external:
- BRC721.approve(address,uint256) (contracts/bsc-nft-factory/contracts/BRC721.sol#134-143)
tokenOfOwnerByIndex(address,uint256) should be declared external:
- BRC721Enumerable.tokenOfOwnerByIndex(address,uint256) (contracts/bsc-nft-factory/contracts/BRC721Enumerable.sol#32-35)
setApprovalForAll(address,bool) should be declared external:
- BRC721.setApprovalForAll(address,bool) (contracts/bsc-nft-factory/contracts/BRC721.sol#157-162)
name() should be declared external:
- BRC721.name() (contracts/bsc-nft-factory/contracts/BRC721.sol#93-95)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract name (Binance NFT Mystery Box-TopGoal) 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.

Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.

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.

Unable to find website, listings and other project-related information

Token has a considerable age, but we're still unable to find its website

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Token has a considerable age, but social accounts / website are missing or have few users

Token has a considerable age, but average PancakeSwap 30d trading volume is low