FF [Fantasy Fox] Token

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

FANTASYFOX.addLiquidity(uint256,uint256) (#977-990) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in FANTASYFOX._transfer(address,address,uint256) (#870-934):
External calls:
- swapAndLiquify(contractTokenBalance.sub(marketingAmount)) (#913)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#968-974)
External calls sending eth:
- swapAndLiquify(contractTokenBalance.sub(marketingAmount)) (#913)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
State variables written after the call(s):
- _balances[from] = _balances[from].sub(amount,BEP20: transfer amount exceeds balance) (#915-918)
- _balances[address(this)] = _balances[address(this)].add(feeAmount) (#931)
- _balances[to] = _balances[to].add(amount.sub(feeAmount)) (#932)
Apply the check-effects-interactions pattern.

Additional information: link

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.

FANTASYFOX._transfer(address,address,uint256).marketingAmount (#900) is a local variable never initialized
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

FANTASYFOX.addLiquidity(uint256,uint256) (#977-990) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
Ensure that all the return values of the function calls are used.

Additional information: link

FANTASYFOX._approve(address,address,uint256).owner (#1006) shadows:
- Ownable.owner() (#152-154) (function)
Rename the local variables that shadow another component.

Additional information: link

FANTASYFOX.setNumTokensSellToAddToLiquidity(uint256) (#650-652) should emit an event for:
- numTokensSellToAddToLiquidity = val (#651)
Emit an event for critical parameter changes.

Additional information: link

FANTASYFOX.updateUniswapV2Router(address)._uniswapV2Pair (#691-692) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#693)
Check that the address is not zero.

Additional information: link

Reentrancy in FANTASYFOX.updateUniswapV2Router(address) (#684-694):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#691-692)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#693)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in FANTASYFOX.transferFrom(address,address,uint256) (#800-815):
External calls:
- _transfer(sender,recipient,amount) (#805)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#968-974)
External calls sending eth:
- _transfer(sender,recipient,amount) (#805)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#982-989)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1014)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,BEP20: transfer amount exceeds allowance)) (#806-813)
Apply the check-effects-interactions pattern.

Additional information: link

SafeMath.mod(uint256,uint256,string) (#125-132) is never used and should be removed
Remove unused functions.

Additional information: link

Variable FANTASYFOX._maxTxAmount (#555) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#62)" inContext (#52-65)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#326) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#327)
Prevent variables from having similar names.

Additional information: link

FANTASYFOX.constructor() (#584-614) uses literals with too many digits:
- numTokensSellToAddToLiquidity = 100000000 * (10 ** 18) (#611)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

decreaseAllowance(address,uint256) should be declared external:
- FANTASYFOX.decreaseAllowance(address,uint256) (#855-868)
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

Token has only one trading pair

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.

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

Young tokens have high risks of price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank