HIGH severity: ST - Stops Transactions. The transactions are initially disabled for all users excluding the authorized addresses.

Vulnerable code:
/**

 *Submitted for verification at Etherscan.io on 2023-05-17

*/



//Telegram: https://t.me/+95Z66K5jppgyN2U1

//Twitter: https://twitter.com/mighty_chimp

//Website: https://mightychimp.io





pragma solidity 0.8.9;

// SPDX-License-Identifier: MIT  



abstract contract Context {

    function _msgSender() internal view virtual returns (address) {

        return msg.sender;

    }

    function _msgData() internal view virtual returns (bytes calldata) {

        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691

        return msg.data;

    }

}



library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {

        uint256 c = a + b;

        require(c >= a, "SafeMath: addition overflow");

        return c;

    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {

        return sub(a, b, "SafeMath: subtraction overflow");

    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b <= a, errorMessage);

        uint256 c = a - b;

        return c;

    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {

        if (a == 0) {

            return 0;

        }

        uint256 c = a * b;

        require(c / a == b, "SafeMath: multiplication overflow");

        return c;

    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {

        return div(a, b, "SafeMath: division by zero");

    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b > 0, errorMessage);

        uint256 c = a / b;

        return c;

    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {

        return mod(a, b, "SafeMath: modulo by zero");

    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b != 0, errorMessage);

        return a % b;

    }

}



interface IUniswapV2Pair {

    event Approval(address indexed owner, address indexed spender, uint value);

    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint);

    function balanceOf(address owner) external view returns (uint);

    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);

    function transfer(address to, uint value) external returns (bool);

    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);

    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);

    event Swap(

        address indexed sender,

        uint amount0In,

        uint amount1In,

        uint amount0Out,

        uint amount1Out,

        address indexed to

    );

    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);

    function factory() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function price0CumulativeLast() external view returns (uint);

    function price1CumulativeLast() external view returns (uint);

    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);

    function burn(address to) external returns (uint amount0, uint amount1);

    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;

}

 

interface IUniswapV2Factory {

    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);

    function allPairs(uint) external view returns (address pair);

    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;

}

 

interface IERC20 {

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(

        address sender,

        address recipient,

        uint256 amount

    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);

}

 

interface IERC20Metadata is IERC20 {

    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);

}



contract ERC20 is Context, IERC20, IERC20Metadata {

    using SafeMath for uint256;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;

    string private _symbol;

    constructor(string memory name_, string memory symbol_) {

        _name = name_;

        _symbol = symbol_;

    }

    function name() public view virtual override returns (string memory) {

        return _name;

    }

    function symbol() public view virtual override returns (string memory) {

        return _symbol;

    }

    function decimals() public view virtual override returns (uint8) {

        return 18;

    }

    function totalSupply() public view virtual override returns (uint256) {

        return _totalSupply;

    }

    function balanceOf(address account) public view virtual override returns (uint256) {

        return _balances[account];

    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {

        _transfer(_msgSender(), recipient, amount);

        return true;

    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {

        return _allowances[owner][spender];

    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {

        _approve(_msgSender(), spender, amount);

        return true;

    }

    function transferFrom(

        address sender,

        address recipient,

        uint256 amount

    ) public virtual override returns (bool) {

        _transfer(sender, recipient, amount);

        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));

        return true;

    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {

        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));

        return true;

    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {

        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));

        return true;

    }

    function _transfer(

        address sender,

        address recipient,

        uint256 amount

    ) internal virtual {

        require(sender != address(0), "ERC20: transfer from the zero address");

        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");

        _balances[recipient] = _balances[recipient].add(amount);

        emit Transfer(sender, recipient, amount);

    }

    function _mint(address account, uint256 amount) internal virtual {

        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);

        _balances[account] = _balances[account].add(amount);

        emit Transfer(address(0), account, amount);

    }

    function _burn(address account, uint256 amount) internal virtual {

        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");

        _totalSupply = _totalSupply.sub(amount);

        emit Transfer(account, address(0), amount);

    }

    function _approve(

        address owner,

        address spender,

        uint256 amount

    ) internal virtual {

        require(owner != address(0), "ERC20: approve from the zero address");

        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;

        emit Approval(owner, spender, amount);

    }

    function _beforeTokenTransfer(

        address from,

        address to,

        uint256 amount

    ) internal virtual {}

}

 

contract Ownable is Context {

    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {

        address msgSender = _msgSender();

        _owner = msgSender;

        emit OwnershipTransferred(address(0), msgSender);

    }

    function owner() public view returns (address) {

        return _owner;

    }

    modifier onlyOwner() {

        require(_owner == _msgSender(), "Ownable: caller is not the owner");

        _;

    }

    function renounceOwnership() public virtual onlyOwner {

        emit OwnershipTransferred(_owner, address(0));

        _owner = address(0);

    }

    function transferOwnership(address newOwner) public virtual onlyOwner {

        require(newOwner != address(0), "Ownable: new owner is the zero address");

        emit OwnershipTransferred(_owner, newOwner);

        _owner = newOwner;

    }

}



library SafeMathInt {

    int256 private constant MIN_INT256 = int256(1) << 255;

    int256 private constant MAX_INT256 = ~(int256(1) << 255);

    function mul(int256 a, int256 b) internal pure returns (int256) {

        int256 c = a * b;

        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));

        require((b == 0) || (c / b == a));

        return c;

    }

    function div(int256 a, int256 b) internal pure returns (int256) {

        require(b != -1 || a != MIN_INT256);

        return a / b;

    }

    function sub(int256 a, int256 b) internal pure returns (int256) {

        int256 c = a - b;

        require((b >= 0 && c <= a) || (b < 0 && c > a));

        return c;

    }

    function add(int256 a, int256 b) internal pure returns (int256) {

        int256 c = a + b;

        require((b >= 0 && c >= a) || (b < 0 && c < a));

        return c;

    }

    function abs(int256 a) internal pure returns (int256) {

        require(a != MIN_INT256);

        return a < 0 ? -a : a;

    }

    function toUint256Safe(int256 a) internal pure returns (uint256) {

        require(a >= 0);

        return uint256(a);

    }

}



library SafeMathUint {

  function toInt256Safe(uint256 a) internal pure returns (int256) {

    int256 b = int256(a);

    require(b >= 0);

    return b;

  }

}



interface IUniswapV2Router01 {

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(

        address tokenA,

        address tokenB,

        uint amountADesired,

        uint amountBDesired,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline

    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(

        address token,

        uint amountTokenDesired,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(

        address tokenA,

        address tokenB,

        uint liquidity,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline

    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(

        address tokenA,

        address tokenB,

        uint liquidity,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(

        uint amountOut,

        uint amountInMax,

        address[] calldata path,

        address to,

        uint deadline

    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)

        external

        payable

        returns (uint[] memory amounts);

    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)

        external

        returns (uint[] memory amounts);

    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)

        external

        returns (uint[] memory amounts);

    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)

        external

        payable

        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);

    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);

    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);

    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);

    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);

}

 

interface IUniswapV2Router02 is IUniswapV2Router01 {

    function removeLiquidityETHSupportingFeeOnTransferTokens(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external;

}

 

contract MIGHTYCHIMP is ERC20, Ownable {

    using SafeMath for uint256;

 

    IUniswapV2Router02 public immutable uniswapV2Router;

    address public immutable uniswapV2Pair; 

    bool private swapping;

 

    address private marketingWallet;

    address public developmentWallet;

    address public treasuryWallet;

    address public operationsWallet;

 

    uint256 public maxTransactionAmount;

    uint256 public swapTokensAtAmount;

    uint256 public maxWallet;

 

    bool public limitsInEffect = true;

    bool public tradingActive = false;

    bool public swapEnabled = false;

 

    uint256 public buyTotalFees;

    uint256 public buyMarketingFee;

    uint256 public buyDevelopmentFee;

    uint256 public buyTreasuryFee;

    uint256 public buyOperationsFee;

 

    uint256 public sellTotalFees;

    uint256 public sellMarketingFee;

    uint256 public sellDevelopmentFee;

    uint256 public sellTreasuryFee;

    uint256 public sellOperationsFee;

 

    uint256 public tokensForMarketing;

    uint256 public tokensForDevelopment;

    uint256 public tokensForTreasury;

    uint256 public tokensForOperations;



    // exclude from fees and max transaction amount

    mapping (address => bool) private _isExcludedFromFees;

    mapping (address => bool) public _isExcludedMaxTransactionAmount;

 

    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses

    // could be subject to a maximum transfer amount

    mapping (address => bool) public automatedMarketMakerPairs;

 

    event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);

 

    event ExcludeFromFees(address indexed account, bool isExcluded);

 

    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

 

    event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);

    event developmentWalletUpdated(address indexed newWallet, address indexed oldWallet);

    event treasuryWalletUpdated(address indexed newWallet, address indexed oldWallet);

    event operationsWalletUpdated(address indexed newWallet, address indexed oldWallet);

 

    constructor() ERC20("MIGHTY CHIMP", "MTC") {

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

 

        excludeFromMaxTransaction(address(_uniswapV2Router), true);

        uniswapV2Router = _uniswapV2Router;

 

        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());

        excludeFromMaxTransaction(address(uniswapV2Pair), true);

        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);

 

        uint256 _buyMarketingFee = 0;

        uint256 _buyDevelopmentFee = 0;

        uint256 _buyTreasuryFee = 0;

        uint256 _buyOperationsFee = 0;

 

        uint256 _sellMarketingFee = 0;

        uint256 _sellDevelopmentFee = 0;

        uint256 _sellTreasuryFee = 0;

        uint256 _sellOperationsFee = 0;



        uint256 totalSupply = 1 * 1e11 * 1e18;

 

        maxTransactionAmount = (totalSupply * 100 / 100) + (1 * 1e18); // 100% maxTransactionAmountTxn

        maxWallet = (totalSupply * 100 / 100) + (1 * 1e18); // 100% maxWallet

        swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet

 

        buyMarketingFee = _buyMarketingFee;

        buyDevelopmentFee = _buyDevelopmentFee;

        buyTreasuryFee = _buyTreasuryFee;

        buyOperationsFee = _buyOperationsFee;

        buyTotalFees = buyMarketingFee + buyDevelopmentFee + buyTreasuryFee + buyOperationsFee;

 

        sellMarketingFee = _sellMarketingFee;

        sellDevelopmentFee = _sellDevelopmentFee;

        sellTreasuryFee = _sellTreasuryFee;

        sellOperationsFee = _sellOperationsFee;

        sellTotalFees = sellMarketingFee + sellDevelopmentFee + sellTreasuryFee + sellOperationsFee;

 

        marketingWallet = address(0x0ee532A5691331e19e25F21A320273d5Fe3e02cf); // set as marketing wallet

        developmentWallet = address(0xfF6DA7B2EAc2B9f2f98091532475eC8830E2653a); // set as development wallet

        treasuryWallet = address(0xfF6DA7B2EAc2B9f2f98091532475eC8830E2653a); // set a treasury wallet

        operationsWallet = address(0xfF6DA7B2EAc2B9f2f98091532475eC8830E2653a); // set as operations wallet

 

        // exclude from paying fees

        excludeFromFees(owner(), true);

        excludeFromFees(address(this), true);

        excludeFromFees(address(0xdead), true);

        excludeFromFees(marketingWallet, true);

        excludeFromFees(developmentWallet, true);

        excludeFromFees(treasuryWallet, true);

        excludeFromFees(operationsWallet, true);

        // exclude from having max transaction amount

        excludeFromMaxTransaction(owner(), true);

        excludeFromMaxTransaction(address(this), true);

        excludeFromMaxTransaction(address(0xdead), true);

        excludeFromMaxTransaction(marketingWallet, true);

        excludeFromMaxTransaction(developmentWallet, true);

        excludeFromMaxTransaction(treasuryWallet, true);

        excludeFromMaxTransaction(operationsWallet, true);

 

        /*

            _mint is an internal function in ERC20.sol that is only called here,

            and CANNOT be called ever again

        */

        _mint(msg.sender, totalSupply);

    }

 

    receive() external payable {

 

    }

 

    // once enabled, can never be turned off

    function enableTrading() external onlyOwner {

        tradingActive = true;

        swapEnabled = true;

    }

 

    // remove limits after token is stable

    function removeLimits() external onlyOwner returns (bool){

        limitsInEffect = false;

        return true;

    }



    function resetLimitsBackIntoEffect() external onlyOwner returns(bool) {

        limitsInEffect = true;

        return true;

    }

 

     // change the minimum amount of tokens to sell from fees

    function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){

        require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");

        require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");

        swapTokensAtAmount = newAmount;

        return true;

    }

 

    function updateMaxTxnAmount(uint256 newNum) external onlyOwner {

        require(newNum >= (totalSupply() * 2 / 100)/1e18, "Cannot set maxTransactionAmount lower than 2%");

        maxTransactionAmount = (newNum * (10**18)) + (1 * 1e18);

    }

 

    function updateMaxWalletAmount(uint256 newNum) external onlyOwner {

        require(newNum >= (totalSupply() * 3 / 100)/1e18, "Cannot set maxWallet lower than 3%");

        maxWallet = (newNum * (10**18)) + (1 * 1e18);

    }

 

    function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {

        _isExcludedMaxTransactionAmount[updAds] = isEx;

    }

 

    // only use to disable contract sales if absolutely necessary (emergency use only)

    function updateSwapEnabled(bool enabled) external onlyOwner(){

        swapEnabled = enabled;

    }

 

    function updateBuyFees(uint256 _marketingFee, uint256 _developmentFee, uint256 _treasuryFee, uint256 _operationsFee) external onlyOwner {

        buyMarketingFee = _marketingFee;

        buyDevelopmentFee = _developmentFee;

        buyTreasuryFee = _treasuryFee;

        buyOperationsFee = _operationsFee;

        buyTotalFees = buyMarketingFee + buyDevelopmentFee + buyTreasuryFee + buyOperationsFee;

        require(buyTotalFees <= 5, "Must keep total buy fees at 5% or less");

    }

 

    function updateSellFees(uint256 _marketingFee, uint256 _developmentFee, uint256 _treasuryFee, uint256 _operationsFee) external onlyOwner {

        sellMarketingFee = _marketingFee;

        sellDevelopmentFee = _developmentFee;

        sellTreasuryFee = _treasuryFee;

        sellOperationsFee = _operationsFee;

        sellTotalFees = sellMarketingFee + sellDevelopmentFee + sellTreasuryFee + sellOperationsFee;

        require(sellTotalFees <= 5, "Must keep total sell fees at 5% or less");

    }

 

    function excludeFromFees(address account, bool excluded) public onlyOwner {

        _isExcludedFromFees[account] = excluded;

        emit ExcludeFromFees(account, excluded);

    }



    function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {

        require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");

        _setAutomatedMarketMakerPair(pair, value);

    }

 

    function _setAutomatedMarketMakerPair(address pair, bool value) private {

        automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);

    }

 

    function updateMarketingWallet(address newWallet) external onlyOwner {

        emit marketingWalletUpdated(newWallet, marketingWallet);

        marketingWallet = newWallet;

    }

 

    function updateDevelopmentWallet(address newWallet) external onlyOwner {

        emit developmentWalletUpdated(newWallet, developmentWallet);

        developmentWallet = newWallet;

    }



    function updateTreasuryWallet(address newWallet) external onlyOwner {

        emit treasuryWalletUpdated(newWallet, treasuryWallet);

        treasuryWallet = newWallet;

    }



    function updateOperationsWallet(address newWallet) external onlyOwner {

        emit operationsWalletUpdated(newWallet, operationsWallet);

        operationsWallet = newWallet;

    }

 

    function isExcludedFromFees(address account) public view returns(bool) {

        return _isExcludedFromFees[account];

    }

 

    function _transfer(

        address from,

        address to,

        uint256 amount

    ) internal override {

        require(from != address(0), "ERC20: transfer from the zero address");

        require(to != address(0), "ERC20: transfer to the zero address");

         if(amount == 0) {

            super._transfer(from, to, 0);

            return;

        }

 

        if(limitsInEffect){

            if (

                from != owner() &&

                to != owner() &&

                to != address(0) &&

                to != address(0xdead) &&

                !swapping

            ){

                if(!tradingActive){

                    require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");

                }

 

                //when buy

                if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {

                        require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");

                        require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");

                }

 

                //when sell

                else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {

                        require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");

                }

                else if(!_isExcludedMaxTransactionAmount[to]){

                    require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");

                }

            }

        }

 

        uint256 contractTokenBalance = balanceOf(address(this));

 

        bool canSwap = contractTokenBalance >= swapTokensAtAmount;

 

        if( 

            canSwap &&

            swapEnabled &&

            !swapping &&

            !automatedMarketMakerPairs[from] &&

            !_isExcludedFromFees[from] &&

            !_isExcludedFromFees[to]

        ) {

            swapping = true;

 

            swapBack();

 

            swapping = false;

        }

 

        bool takeFee = !swapping;



        bool walletToWallet = !automatedMarketMakerPairs[to] && !automatedMarketMakerPairs[from];

        // if any account belongs to _isExcludedFromFee account then remove the fee

        if(_isExcludedFromFees[from] || _isExcludedFromFees[to] || walletToWallet) {

            takeFee = false;

        }

        uint256 fees = 0;

        // only take fees on buys/sells, do not take on wallet transfers

        if(takeFee){

            // on sell

            if (automatedMarketMakerPairs[to] && sellTotalFees > 0){

                fees = amount.mul(sellTotalFees).div(100);

                tokensForMarketing += fees * sellMarketingFee / sellTotalFees;

                tokensForDevelopment += fees * sellDevelopmentFee / sellTotalFees;

                tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;

                tokensForOperations += fees * sellOperationsFee / sellTotalFees;

            }

            // on buy

            else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {

                fees = amount.mul(buyTotalFees).div(100);

                tokensForDevelopment += fees * buyDevelopmentFee / buyTotalFees;

                tokensForMarketing += fees * buyMarketingFee / buyTotalFees;

                tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;

                tokensForOperations += fees * buyOperationsFee / buyTotalFees;

            }

            if(fees > 0){    

                super._transfer(from, address(this), fees);

            }

            amount -= fees;

        }

        super._transfer(from, to, amount);

    }

 

    function swapTokensForEth(uint256 tokenAmount) private {

        // generate the uniswap pair path of token -> weth

        address[] memory path = new address[](2);

        path[0] = address(this);

        path[1] = uniswapV2Router.WETH();

        _approve(address(this), address(uniswapV2Router), tokenAmount);

        // make the swap

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(

            tokenAmount,

            0, // accept any amount of ETH

            path,

            address(this),

            block.timestamp

        );

    }

 

    function swapBack() private {

        uint256 contractBalance = balanceOf(address(this));

        uint256 totalTokensToSwap = tokensForMarketing + tokensForDevelopment + tokensForTreasury + tokensForOperations;

        bool success;

 

        if(contractBalance == 0 || totalTokensToSwap == 0) {return;}



        if(contractBalance > swapTokensAtAmount * 20){

          contractBalance = swapTokensAtAmount * 20;

        }

 

        uint256 amountToSwapForETH = contractBalance;

        uint256 initialETHBalance = address(this).balance;

 

        swapTokensForEth(amountToSwapForETH); 

 

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);



        uint256 ethForDevelopment = ethBalance.mul(tokensForDevelopment).div(totalTokensToSwap);

        uint256 ethForTreasury = ethBalance.mul(tokensForTreasury).div(totalTokensToSwap);

        uint256 ethForOperations = ethBalance.mul(tokensForOperations).div(totalTokensToSwap);

 

        tokensForMarketing = 0;

        tokensForDevelopment = 0;

        tokensForTreasury = 0;

        tokensForOperations = 0;

 

        (success,) = address(developmentWallet).call{value: ethForDevelopment}("");

        (success,) = address(treasuryWallet).call{value: ethForTreasury}("");

        (success,) = address(operationsWallet).call{value: ethForOperations}("");

        (success,) = address(marketingWallet).call{value: address(this).balance}("");

    }

}

Vulnerability type: CWE-284