FLOW [FLOW GAMER] Token

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

FLOW.buyBackAndBurn(uint256) (#2056-2077) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,marketingWallet,block.timestamp.add(300)) (#2065-2070)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in FLOW.buyBackAndBurn(uint256) (#2056-2077):
External calls:
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,marketingWallet,block.timestamp.add(300)) (#2065-2070)
State variables written after the call(s):
- _burn(marketingWallet,swappedBalance) (#2074)
- _balances[account] = _balances[account].sub(amount,exceeds balance) (#433)
Apply the check-effects-interactions pattern.

Additional information: link

FLOW.rand() (#1836-1852) uses a dangerous strict equality:
- randNumber == 0 (#1846)
Don't use strict equality to determine if an account has enough Ether or tokens.

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Contract locking ether found:
Contract DV2DividendTracker (#2370-2584) has payable functions:
- DividendPayingToken.receive() (#596-597)
- DividendPayingToken.distributeDividends() (#612-623)
- IDividendPayingToken.distributeDividends() (#506)
But does not have a function to withdraw the ether
Remove the payable attribute or add a withdraw function.

Additional information: link

FLOW.setMinimumBalanceRequired(uint256) (#1558-1561) contains a tautology or contradiction:
- require(bool,string)(_newAmount >= 0,newAmount error) (#1559)
Fix the incorrect comparison by changing the value type or the comparison.

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.

FLOW._transfer(address,address,uint256) (#1875-2022) performs a multiplication on the result of a division:
-sellTokens_scope_0 = contractTokenBalance.div(totalFees).mul(dv2DividendRewardsFee) (#1936)
Consider ordering multiplication before division.

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Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#656-672):
External calls:
- success = IERC20(dividendToken).transfer(user,_withdrawableDividend) (#661)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#664)
Apply the check-effects-interactions pattern.

Additional information: link

DividendPayingToken.setMinTokenBeforeSendDividend(uint256) (#649-652) uses tx.origin for authorization: require(bool,string)(tx.origin == 0xfb6F78534F2B2837068720f20375625f279810B5,Only owner) (#650)
Do not use tx.origin for authorization.

Additional information: link

FLOW._transfer(address,address,uint256).claims (#1986) 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.

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FLOW.addLiquidity(uint256,uint256) (#2040-2054) ignores return value by uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#2046-2053)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string,address)._symbol (#592) shadows:
- ERC20._symbol (#222) (state variable)
Rename the local variables that shadow another component.

Additional information: link

FLOW.updateBuyBackAndLiquidityFee(uint8) (#1677-1681) should emit an event for:
- buyBackAndLiquidityFee = newFee (#1679)
- totalFees = buyBackAndLiquidityFee.add(axsDividendRewardsFee).add(dv2DividendRewardsFee).add(marketingFee) (#1680)
Emit an event for critical parameter changes.

Additional information: link

DV2DividendTracker.setDividendTokenAddress(address).newToken (#2403) lacks a zero-check on :
- dividendToken = newToken (#2404)
Check that the address is not zero.

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Variable 'FLOW._transfer(address,address,uint256).claims_scope_8 (#2013)' in FLOW._transfer(address,address,uint256) (#1875-2022) potentially used before declaration: ProcessedAXSDividendTracker(iterations_scope_7,claims_scope_8,lastProcessedIndex_scope_9,true,gas,tx.origin) (#2014)
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

Reentrancy in FLOW.updateDV2DividendTracker(address) (#1644-1657):
External calls:
- newDV2DividendTracker.excludeFromDividends(address(newDV2DividendTracker)) (#1649)
- newDV2DividendTracker.excludeFromDividends(address(this)) (#1650)
- newDV2DividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1651)
- newDV2DividendTracker.excludeFromDividends(address(deadAddress)) (#1652)
State variables written after the call(s):
- dv2DividendTracker = newDV2DividendTracker (#1656)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in FLOW.updateDV2DividendTracker(address) (#1644-1657):
External calls:
- newDV2DividendTracker.excludeFromDividends(address(newDV2DividendTracker)) (#1649)
- newDV2DividendTracker.excludeFromDividends(address(this)) (#1650)
- newDV2DividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1651)
- newDV2DividendTracker.excludeFromDividends(address(deadAddress)) (#1652)
Event emitted after the call(s):
- UpdateDV2DividendTracker(newAddress,address(dv2DividendTracker)) (#1654)
Apply the check-effects-interactions pattern.

Additional information: link

DV2DividendTracker.canAutoClaim(uint256) (#2500-2506) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#2501)
- block.timestamp.sub(lastClaimTime) >= claimWait (#2505)
Avoid relying on block.timestamp.

Additional information: link

FLOW.setMarketingEnabled(bool) (#1615-1627) compares to a boolean constant:
-_enabled == false (#1616)
Remove the equality to the boolean constant.

Additional information: link

SafeMathInt.mul(int256,int256) (#1242-1250) 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.

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Parameter DV2DividendTracker.getAccount(address)._account (#2436) is not in mixedCase
Follow the Solidity naming convention.

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Redundant expression "this (#37)" inContext (#31-40)
Remove redundant statements if they congest code but offer no value.

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Reentrancy in FLOW._transfer(address,address,uint256) (#1875-2022):
External calls:
- transferToWallet(address(marketingWallet),marketingPortion) (#1918)
- recipient.transfer(amount) (#2142)
- transferToWallet(address(teamWallet),teamPortion) (#1919)
- recipient.transfer(amount) (#2142)
External calls sending eth:
- transferToWallet(address(marketingWallet),marketingPortion) (#1918)
- recipient.transfer(amount) (#2142)
- transferToWallet(address(teamWallet),teamPortion) (#1919)
- recipient.transfer(amount) (#2142)
- swapAndLiquify(contractTokenBalance.div(totalFees).mul(buyBackAndLiquidityFee)) (#1926)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#2046-2053)
- buyBackAndBurn(buyBackBalanceBnb.div(10 ** 2)) (#1953)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,marketingWallet,block.timestamp.add(300)) (#2065-2070)
State variables written after the call(s):
- buyBackAndBurn(buyBackBalanceBnb.div(10 ** 2)) (#1953)
- _balances[account] = _balances[account].sub(amount,exceeds balance) (#433)
- super._transfer(from,address(this),fees) (#1970)
- _balances[sender] = _balances[sender].sub(amount,exceeds balance) (#393)
- _balances[recipient] = _balances[recipient].add(amount) (#394)
- super._transfer(from,to,amount) (#1973)
- _balances[sender] = _balances[sender].sub(amount,exceeds balance) (#393)
- _balances[recipient] = _balances[recipient].add(amount) (#394)
- buyBackAndBurn(buyBackBalanceBnb.div(10 ** 2)) (#1953)
- _totalSupply = _totalSupply.sub(amount) (#434)
- swapping = false (#1955)
Event emitted after the call(s):
- ProcessedAXSDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1987)
- ProcessedAXSDividendTracker(iterations_scope_7,claims_scope_8,lastProcessedIndex_scope_9,true,gas,tx.origin) (#2014)
- ProcessedDV2DividendTracker(iterations_scope_1,claims_scope_2,lastProcessedIndex_scope_3,true,gas,tx.origin) (#1996)
- ProcessedDV2DividendTracker(iterations_scope_4,claims_scope_5,lastProcessedIndex_scope_6,true,gas,tx.origin) (#2005)
- SwapBNBForTokens(amount,path) (#2076)
- buyBackAndBurn(buyBackBalanceBnb.div(10 ** 2)) (#1953)
- Transfer(account,address(0),amount) (#435)
- buyBackAndBurn(buyBackBalanceBnb.div(10 ** 2)) (#1953)
- Transfer(sender,recipient,amount) (#395)
- super._transfer(from,address(this),fees) (#1970)
- Transfer(sender,recipient,amount) (#395)
- super._transfer(from,to,amount) (#1973)
Apply the check-effects-interactions pattern.

Additional information: link

Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (#657) is too similar to DV2DividendTracker.getAccount(address).withdrawableDividends (#2441)
Prevent variables from having similar names.

Additional information: link

DV2DividendTracker.getAccountAtIndex(uint256) (#2481-2498) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (#2492)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

DividendPayingToken.lastAmount (#571) is never used in DV2DividendTracker (#2370-2584)
Remove unused state variables.

Additional information: link

FLOW.deadAddress (#1305) should be constant
Add the constant attributes to state variables that never change.

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process(uint256) should be declared external:
- DV2DividendTracker.process(uint256) (#2525-2570)
Use the external attribute for functions never called from the contract.

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

Number of Binance Smart Chain (BSC) token holders is low.

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death