PFW [Perfect World] Token
About PFW
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A new decentralized meta-universe ecosystem, including digital asset trading platform, P2E online finance, NFT sector, GAMEFI, etc. All digital platforms-mobile, computers, consoles and VR/AR can sell virtual game props by executing smart contracts with blockchain technology and removing trusted intermediaries. Game item trading will use encrypted token "PFW"
Meta universe is a new type of Internet application and social form that integrates multiple new technologies. It provides an immersive experience based on extended reality technology, generates a mirror image of the real world based on digital twin technology, and builds an economic system based on blockchain technology. , The virtual world and the real world are closely integrated in the economic system, social system, and identity system, and each user is allowed to carry out content production and world editing.
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Laser Scorebeta Last Audit: 30 November 2021
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Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
Reentrancy in Token._transfer(address,address,uint256) (#1248-1302):
External calls:
- swapAndLiquify(contractTokenBalance) (#1279)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1357-1363)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1279)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#1300)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#1120)
- _rOwned[_poolAddressA] = _rOwned[_poolAddressA].add(rPoolAmoutA) (#1130)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#872)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#853)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#863)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#883)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#854)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#864)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#874)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#885)
- _rOwned[_poolAddressB] = _rOwned[_poolAddressB].add(rPoolAmoutB) (#1139)
- _rOwned[_poolAddressC] = _rOwned[_poolAddressA].add(rPoolAmoutC) (#1148)
- _tokenTransfer(from,to,amount,takeFee) (#1300)
- _rTotal = _rTotal.sub(rFee) (#1057)
- _tokenTransfer(from,to,amount,takeFee) (#1300)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#1122)
- _tOwned[_poolAddressA] = _tOwned[_poolAddressA].add(tPoolAmoutA) (#1132)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#882)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#862)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#873)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#884)
- _tOwned[_poolAddressB] = _tOwned[_poolAddressB].add(tPoolAmoutB) (#1141)
- _tOwned[_poolAddressC] = _tOwned[_poolAddressC].add(tPoolAmoutC) (#1150)
Apply the check-effects-interactions pattern.
Additional information: link
Token.withdrawStuckTokens(address,uint256) (#1366-1368) ignores return value by IERC20(_token).transfer(msg.sender,_amount) (#1367)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.
Additional information: link
Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
Token.addLiquidity(uint256,uint256) (#810-823) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
Ensure that all the return values of the function calls are used.
Additional information: link
Token._approve(address,address,uint256).owner (#1240) shadows:
- Ownable.owner() (#412-414) (function)
Rename the local variables that shadow another component.
Additional information: link
Token.setmaxPairTate(uint256) (#1204-1206) should emit an event for:
- _maxPairTate = maxPairTate (#1205)
Emit an event for critical parameter changes.
Additional information: link
Token.PayTransfer(address).recipient (#1370) lacks a zero-check on :
- recipient.transfer(address(this).balance) (#1371)
Check that the address is not zero.
Additional information: link
Reentrancy in Token.transferFrom(address,address,uint256) (#896-900):
External calls:
- _transfer(sender,recipient,amount) (#897)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1357-1363)
External calls sending eth:
- _transfer(sender,recipient,amount) (#897)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#898)
- _allowances[owner][spender] = amount (#1244)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in Token.transferFrom(address,address,uint256) (#896-900):
External calls:
- _transfer(sender,recipient,amount) (#897)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1357-1363)
External calls sending eth:
- _transfer(sender,recipient,amount) (#897)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#815-822)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1245)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#898)
Apply the check-effects-interactions pattern.
Additional information: link
Token._antiGiantWhale(address,address,uint256) (#1304-1318) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp - _limitPairTime[_limitAddress] < _limitPairTimeOf (#1309)
Avoid relying on block.timestamp.
Additional information: link
Address._functionCallWithValue(address,bytes,uint256,string) (#357-378) uses assembly
- INLINE ASM (#370-373)
Do not use evm assembly.
Additional information: link
SafeMath.mod(uint256,uint256,string) (#225-228) is never used and should be removed
Remove unused functions.
Additional information: link
Token._previousLiquidityFee (#726) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
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
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#357-378):
- (success,returndata) = target.call{value: weiValue}(data) (#361)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Variable Token._maxTxAmount (#740) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#237)" inContext (#231-240)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Variable Token._transferFromExcluded(address,address,uint256).rTransferAmount (#861) is too similar to Token._getValues(uint256).tTransferAmount (#1076)
Prevent variables from having similar names.
Additional information: link
Token.slitherConstructorVariables() (#681-1374) uses literals with too many digits:
- _poolAddressC = 0x0000000000000000000000000000000000000003 (#723)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
Token.numTokensSellToAddToLiquidity (#741) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
PayTransfer(address) should be declared external:
- Token.PayTransfer(address) (#1370-1372)
Use the external attribute for functions never called from the contract.
Additional information: link
Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.
Token is deployed only at one blockchain
Unable to find PancakeSwap trading pair to compute liquidity.
Unable to find PancakeSwap trading pair to compute volume.
Unable to find PancakeSwap trading pair to compute number of swaps.
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 verify token contract address on the website
Unable to find audit link on the website
Unable to find Telegram link on the website
Unable to find Twitter link on the website
Unable to find token on CoinHunt
Additional information: link
Unable to find code repository for the project
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
Young tokens have high risks of price dump / death
Token has relatively low CoinGecko rank
Token has relatively low CoinMarketCap rank
Price for PFW
LASER DESK beta
Twitter account link seems to be invalid
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account
Unable to find Discord account