RFC [Royal Flush Coin] Token
About RFC
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Website
The objective of the Royal Flush Coin project is to
consolidate itself as a Crypto Token capable of providing
the Investor/Player with the opportunity to invest in an
asset that, in addition to the possibility of market
appreciation due to the flow of transactions, also has the
option of using it to perform the most diverse types of
online bets.
At first, only Royal Flush Coin Tokens will be
accepted in its own betting system and following its
development schedule, in the future on its website in
Online Casino mode, allowing the holder of the RFC Token
not only to bet on sporting events , but also uses them to
buy credits used in Poker, Black Jack, Roulette, Craps
games within your Casino site.
Social
Laser Scorebeta Last Audit: 30 November 2021
CoinToken.addLiquidity(uint256,uint256) (#837-847) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in CoinToken._transfer(address,address,uint256) (#776-811):
External calls:
- swapAndLiquify(contractTokenBalance) (#802)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#828-834)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#802)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#810)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#717)
- _rOwned[_devWalletAddress] = _rOwned[_devWalletAddress].add(rDev) (#725)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#881)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#871)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#893)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#872)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#623)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#894)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#883)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#625)
- _tokenTransfer(from,to,amount,takeFee) (#810)
- _rTotal = _rTotal.sub(rFee) (#670)
- _tokenTransfer(from,to,amount,takeFee) (#810)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#719)
- _tOwned[_devWalletAddress] = _tOwned[_devWalletAddress].add(tDev) (#727)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#892)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#622)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#882)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#624)
Apply the check-effects-interactions pattern.
Additional information: link
Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains
Combination 1: Reentrancy vulnerabilities + 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.
CoinToken.constructor(string,string,uint256,uint256,uint256,uint256,uint256,address,address,address,address) (#476-512) performs a multiplication on the result of a division:
-numTokensSellToAddToLiquidity = (_tTotal * 5 / 10000) * 10 ** _decimals (#490)
Consider ordering multiplication before division.
Additional information: link
CoinToken.addLiquidity(uint256,uint256) (#837-847) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
Ensure that all the return values of the function calls are used.
Additional information: link
CoinToken._approve(address,address,uint256).owner (#768) shadows:
- Ownable.owner() (#204-206) (function)
Rename the local variables that shadow another component.
Additional information: link
CoinToken.setNumTokensSellToAddToLiquidity(uint256) (#908-910) should emit an event for:
- numTokensSellToAddToLiquidity = amountToUpdate (#909)
Emit an event for critical parameter changes.
Additional information: link
CoinToken.setDevWalletAddress(address)._addr (#656) lacks a zero-check on :
- _devWalletAddress = _addr (#657)
Check that the address is not zero.
Additional information: link
Reentrancy in CoinToken.transferFrom(address,address,uint256) (#549-553):
External calls:
- _transfer(sender,recipient,amount) (#550)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#828-834)
External calls sending eth:
- _transfer(sender,recipient,amount) (#550)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#551)
- _allowances[owner][spender] = amount (#772)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in CoinToken.transferFrom(address,address,uint256) (#549-553):
External calls:
- _transfer(sender,recipient,amount) (#550)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#828-834)
External calls sending eth:
- _transfer(sender,recipient,amount) (#550)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#839-846)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#773)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#551)
Apply the check-effects-interactions pattern.
Additional information: link
Ownable.unlock() (#235-240) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is locked.) (#237)
Avoid relying on block.timestamp.
Additional information: link
Address._verifyCallResult(bool,bytes,string) (#175-188) uses assembly
- INLINE ASM (#180-183)
Do not use evm assembly.
Additional information: link
SafeMath.trySub(uint256,uint256) (#28-33) is never used and should be removed
Remove unused functions.
Additional information: link
solc-0.8.4 is not recommended for deployment
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.functionDelegateCall(address,bytes,string) (#169-173):
- (success,returndata) = target.delegatecall(data) (#171)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Variable CoinToken._maxTxAmount (#460) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Redundant expression "this (#115)" inContext (#109-118)
Remove redundant statements if they congest code but offer no value.
Additional information: link
Reentrancy in CoinToken.constructor(string,string,uint256,uint256,uint256,uint256,uint256,address,address,address,address) (#476-512):
External calls:
- address(service).transfer(msg.value) (#508)
Event emitted after the call(s):
- Transfer(address(0),tokenOwner,_tTotal) (#509)
Apply the check-effects-interactions pattern.
Additional information: link
Variable CoinToken._getValues(uint256).rTransferAmount (#676) is too similar to CoinToken._transferStandard(address,address,uint256).tTransferAmount (#870)
Prevent variables from having similar names.
Additional information: link
isExcludedFromFee(address) should be declared external:
- CoinToken.isExcludedFromFee(address) (#764-766)
Use the external attribute for functions never called from the contract.
Additional information: link
Average 30d PancakeSwap volume is low.
Average PancakeSwap trading volume, liqudity, number of swaps are low. Token seems to be inactive.
Token is deployed only at one blockchain
Token has only one trading pair
Unable to find PancakeSwap trading pair to compute liquidity.
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 whitepaper link on the website
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
Young tokens have high risks of price dump / death
Token has relatively low CoinGecko rank
Token has relatively low CoinMarketCap rank
Price for RFC
LASER DESK beta
Twitter account link seems to be invalid
Unable to find Blog account (Reddit or Medium)