SmartLauncher - Smart Contract Audit Report

Summary

SmartLauncher Audit Report SmartLauncher ($SML) is a new community-driven DeFi token on the Binance Smart Chain that is an automatic liquidity providing protocol.

We reviewed the SmartLauncher contract at 0xFFDF68ae5B194e1C0b05C0759185e3a9CaD0e35a on the Binance Smartchain mainnet.

Notes on the Contract:
The total supply of the token is set to 10 billion $SML [10,000,000,000].
No minting or burn functions are present; though the circulating supply can be reduced by sending tokens to the 0x..dead address, if desired.
At the time of writing this report, 78% of the total supply belongs to the owner.
20% of the total supply belongs to the team's Marketing wallet.

There is a liquidity fee, buyback fee, and marketing fee on all transactions for any "non-excluded" address that participates in a transfer with Pancakeswap. A separate fee structure can be set by the team to apply different fee percentages depending on whether the user is buying or selling during the transfer.
The tokens collected from the liquidity fee during transfers are stored in the contract address balance. Once the threshold value of tokens (determined by the owner) is met, a swap will occur for the purpose of funding Pancakeswap liquidity.
Liquidity-adds are funded by selling a portion of the tokens collected as fees (after the threshold number of tokens is met), then pairing the received BNB with the token, and adding it as liquidity to the BNB pair.
The recipient of the newly created LP tokens is the Burn address.
The tokens collected from the buyback fee are swapped for BNB and sent to the team's buyback wallet.
The tokens collected from the marketing fee are swapped for BNB and sent to the team's marketing wallet.
The contract features an anti-whale mechanism that, when enabled, enforces maximum transaction amounts for both buy and sell transfers with Pancakeswap.
The contract also features a maximum wallet amount which ensures that a user's token balance does not exceed an amount of tokens (determined by the owner) after a buying transaction.
The contract utilizes Safemath libraries to prevent overflows and complies with the BEP20 standard.

Ownership Controls:
Ownership has not been renounced.
The owner can modify the liquidity fee, buyback fee, and marketing fee to any percentages as long as the total fees combined does not exceed 20%. This applies to both the buy and sell fee structures.
The owner can exclude and include accounts from transfer fees.
The owner can enable/disable automatic liquidity adds at any time.
The owner can update the threshold value of tokens needed to perform automatic liquidity adds.
The owner can enable/disable the anti-whale mechanism and set the maximum transaction amounts to any values up to 500 million tokens.
The owner can exclude and include accounts from the anti-whale mechanism.
The owner can manually add accounts to a blacklist which prevents them from being able to participate in transfers.
The owner can set the maximum wallet amount to any value up to 500 million tokens.
The owner can update the team's buyback wallet and marketing wallet to any addresses at any time.
The owner can update the Automated Market Maker Pair and Pancakeswap Router addresses at any time.
Audit Findings Summary
No external threats were identified.
Please ensure trust in the team prior to investing as they have notable control in the ecosystem and own a large portion of the total supply.
Date: December 4th, 2021

Audit Results

Vulnerability Category	Notes	Result
Arbitrary Storage Write	N/A	PASS
Arbitrary Jump	N/A	PASS
Centralization of Control	The owner can set total fees up to 20%. The team controls a large portion of the total supply.	PASS
Delegate Call to Untrusted Contract	N/A	PASS
Dependence on Predictable Variables	N/A	PASS
Deprecated Opcodes	N/A	PASS
Ether Thief	N/A	PASS
Exceptions	N/A	PASS
External Calls	N/A	PASS
Flash Loans	N/A	PASS
Integer Over/Underflow	N/A	PASS
Multiple Sends	N/A	PASS
Oracles	N/A	PASS
Suicide	N/A	PASS
State Change External Calls	N/A	PASS
Unchecked Retval	N/A	PASS
User Supplied Assertion	N/A	PASS
Critical Solidity Compiler	N/A	PASS
Overall Contract Safety		PASS

Function Graph

ERC20 Token Graph

Inheritance Chart

Multi-file Token

Functions Overview


 ($) = payable function
 # = non-constant function
 
 +  Context 
    - [Int] _msgSender
    - [Int] _msgData

 + [Lib] SafeMathUint 
    - [Int] toInt256Safe

 + [Lib] SafeMathInt 
    - [Int] mul
    - [Int] div
    - [Int] sub
    - [Int] add
    - [Int] abs
    - [Int] toUint256Safe

 + [Lib] SafeMath 
    - [Int] add
    - [Int] sub
    - [Int] sub
    - [Int] mul
    - [Int] div
    - [Int] div
    - [Int] mod
    - [Int] mod

 +  Ownable (Context)
    - [Pub]  #
    - [Pub] owner
    - [Pub] renounceOwnership #
       - modifiers: onlyOwner
    - [Pub] transferOwnership #
       - modifiers: onlyOwner

 + [Int] IUniswapV2Router01 
    - [Ext] factory
    - [Ext] WETH
    - [Ext] addLiquidity #
    - [Ext] addLiquidityETH ($)
    - [Ext] removeLiquidity #
    - [Ext] removeLiquidityETH #
    - [Ext] removeLiquidityWithPermit #
    - [Ext] removeLiquidityETHWithPermit #
    - [Ext] swapExactTokensForTokens #
    - [Ext] swapTokensForExactTokens #
    - [Ext] swapExactETHForTokens ($)
    - [Ext] swapTokensForExactETH #
    - [Ext] swapExactTokensForETH #
    - [Ext] swapETHForExactTokens ($)
    - [Ext] quote
    - [Ext] getAmountOut
    - [Ext] getAmountIn
    - [Ext] getAmountsOut
    - [Ext] getAmountsIn

 + [Int] IUniswapV2Router02 (IUniswapV2Router01)
    - [Ext] removeLiquidityETHSupportingFeeOnTransferTokens #
    - [Ext] removeLiquidityETHWithPermitSupportingFeeOnTransferTokens #
    - [Ext] swapExactTokensForTokensSupportingFeeOnTransferTokens #
    - [Ext] swapExactETHForTokensSupportingFeeOnTransferTokens ($)
    - [Ext] swapExactTokensForETHSupportingFeeOnTransferTokens #

 + [Int] IUniswapV2Pair 
    - [Ext] name
    - [Ext] symbol
    - [Ext] decimals
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transfer #
    - [Ext] transferFrom #
    - [Ext] DOMAIN_SEPARATOR
    - [Ext] PERMIT_TYPEHASH
    - [Ext] nonces
    - [Ext] permit #
    - [Ext] MINIMUM_LIQUIDITY
    - [Ext] factory
    - [Ext] token0
    - [Ext] token1
    - [Ext] getReserves
    - [Ext] price0CumulativeLast
    - [Ext] price1CumulativeLast
    - [Ext] kLast
    - [Ext] mint #
    - [Ext] burn #
    - [Ext] swap #
    - [Ext] skim #
    - [Ext] sync #
    - [Ext] initialize #

 + [Int] IUniswapV2Factory 
    - [Ext] feeTo
    - [Ext] feeToSetter
    - [Ext] getPair
    - [Ext] allPairs
    - [Ext] allPairsLength
    - [Ext] createPair #
    - [Ext] setFeeTo #
    - [Ext] setFeeToSetter #

 + [Int] IERC20 
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #

 + [Int] IERC20Metadata (IERC20)
    - [Ext] name
    - [Ext] symbol
    - [Ext] decimals

 +  ERC20 (Context, IERC20, IERC20Metadata)
    - [Pub]  #
    - [Pub] name
    - [Pub] symbol
    - [Pub] decimals
    - [Pub] totalSupply
    - [Pub] balanceOf
    - [Pub] transfer #
    - [Pub] allowance
    - [Pub] approve #
    - [Pub] transferFrom #
    - [Pub] increaseAllowance #
    - [Pub] decreaseAllowance #
    - [Int] _transfer #
    - [Int] _mint #
    - [Int] _burn #
    - [Int] _approve #
    - [Int] _beforeTokenTransfer #

 +  SmartLauncher (ERC20, Ownable)
    - [Pub]  #
       - modifiers: ERC20
    - [Ext]  ($)
    - [Pub] setExcludedFromAntiWhale #
       - modifiers: onlyOwner
    - [Pub] isExcludedFromAntiWhale
    - [Pub] updateUniswapV2Router #
       - modifiers: onlyOwner
    - [Pub] excludeFromFees #
       - modifiers: onlyOwner
    - [Pub] excludeMultipleAccountsFromFees #
       - modifiers: onlyOwner
    - [Ext] setSwapTokensAtAmount #
       - modifiers: onlyOwner
    - [Ext] setMarketingWallet #
       - modifiers: onlyOwner
    - [Ext] setBuybackWallet #
       - modifiers: onlyOwner
    - [Pub] setSellFees #
       - modifiers: onlyOwner
    - [Pub] setBuyFees #
       - modifiers: onlyOwner
    - [Pub] setAutomatedMarketMakerPair #
       - modifiers: onlyOwner
    - [Ext] blacklistAddress #
       - modifiers: onlyOwner
    - [Prv] _setAutomatedMarketMakerPair #
    - [Int] _transfer #
       - modifiers: antiWhale
    - [Int] setFeesOnBuy #
    - [Int] setFeesOnSell #
    - [Pub] setEnableAntiwhale #
       - modifiers: onlyOwner
    - [Pub] maxTransferAmountBuy
    - [Pub] maxWalletBalanceAmount
    - [Pub] setMaxWalletBalanceAmountRate #
       - modifiers: onlyOwner
    - [Pub] setMaxTransferAmountRateBuy #
       - modifiers: onlyOwner
    - [Pub] maxTransferAmountSell
    - [Pub] setMaxTransferAmountRateSell #
       - modifiers: onlyOwner
    - [Prv] sendToFee #
    - [Prv] sendToBuyback #
    - [Prv] swapAndLiquify #
    - [Prv] swapTokensForEth #
    - [Prv] addLiquidity #

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