SolarFullCycle - Audit Report

Summary

SolarFullCycle Audit Report SolarFullCycle ($SFC) is a new community-driven DeFi token on the Binance Smart Chain that is an automatic liquidity providing protocol and pays out static rewards to holders.

We reviewed the SolarFullCycle token contract that is deployed at 0x0556551F81623aE32c5c7CF853c67fafBE61648a on the Binance Smartchain mainnet.

Notes on the Contract:
  • The total supply of the token is set to 1 billion $SFC [1,000,000,000].
  • 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, 100% of the total token supply belongs to the owner as the contract was recently deployed.

  • There is a tax fee, liquidity fee, and dev fee on all transactions for any "non-excluded" address that participates in a transfer with Pancakeswap, or any address that is buying from/selling to a contract address. 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.
  • Users who hold tokens will automatically benefit from the frictionless fee redistribution at the time of each transaction as the tokens collected from the tax fee are removed from the circulating supply.
  • The tokens collected from the liquidity fee during transfers are stored in the contract address balance. Once the threshold value (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 value 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 a wallet controlled by the team. We recommend that the team locks these newly acquired LP tokens.
  • The tokens collected from the dev fee are sent to the team's dev wallet.
  • As the contract is deployed with Solidity v0.8.x, it is protected from overflows.

  • Ownership Controls:
  • Ownership has not been renounced.
  • The owner can set the tax fee, liquidity fee, and dev fee for each fee structure to any percentage as long as the combined total fees do not exceed 10%.
  • The owner can disable all buying/selling transactions with Pancakeswap at any time.
  • The owner can exclude and include accounts from transfer fees and reward distribution.
  • The owner can set and update a maximum transaction amount at any time, which will impose a limit to the number of tokens that can be transferred during any given transaction.
  • The owner can enable/disable automatic liquidity adds at any time and and set the threshold value related to it.
  • The owner can enable/disable transfer fees on all transactions at any time.
  • The owner can withdraw any BNB or BEP20 tokens from the contract address at any time.
  • The owner can update the team's LiqWallet and DevWallet to any addresses at any time.
  • The owner has can blacklist any contract addresses from being able to participate in transfers.
  • The owner can update the Pancakeswap Pair and 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.
  • Date: November 27th, 2021

Audit Results

Vulnerability CategoryNotesResult
Arbitrary Storage WriteN/APASS
Arbitrary JumpN/APASS
Centralization of ControlN/APASS
Delegate Call to Untrusted ContractN/APASS
Dependence on Predictable VariablesN/APASS
Deprecated OpcodesN/APASS
Ether ThiefN/APASS
ExceptionsN/APASS
External CallsN/APASS
Flash LoansN/APASS
Integer Over/UnderflowN/APASS
Multiple SendsN/APASS
OraclesN/APASS
SuicideN/APASS
State Change External CallsN/APASS
Unbounded LoopN/APASS
Unchecked RetvalN/APASS
User Supplied AssertionN/APASS
Critical Solidity CompilerN/APASS
Overall Contract Safety PASS

Function Graph

ERC20 Token Graph


Inheritence Chart

Multi-file Token


Functions Overview


 ($) = payable function
 # = non-constant function
 
 + [Int] IERC20 
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #

 +  Context 
    - [Int] _msgSender
    - [Int] _msgData

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

 + [Lib] Address 
    - [Int] isContract
    - [Int] sendValue #
    - [Int] functionCall #
    - [Int] functionCall #
    - [Int] functionCallWithValue #
    - [Int] functionCallWithValue #
    - [Int] functionStaticCall
    - [Int] functionStaticCall
    - [Int] functionDelegateCall #
    - [Int] functionDelegateCall #
    - [Int] verifyCallResult

 + [Lib] SafeMath 
    - [Int] tryAdd
    - [Int] trySub
    - [Int] tryMul
    - [Int] tryDiv
    - [Int] tryMod
    - [Int] add
    - [Int] sub
    - [Int] mul
    - [Int] div
    - [Int] mod
    - [Int] sub
    - [Int] div
    - [Int] mod

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

 + [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] 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 #

 +  SolarFullCycle (Context, IERC20, Ownable)
    - [Pub]  #
    - [Ext] name
    - [Ext] symbol
    - [Ext] decimals
    - [Ext] totalSupply
    - [Pub] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #
    - [Ext] increaseAllowance #
    - [Ext] decreaseAllowance #
    - [Ext] isExcludedFromReward
    - [Ext] totalFees
    - [Ext] reflectionFromToken
    - [Pub] tokenFromReflection
    - [Pub] excludeFromReward #
       - modifiers: onlyOwner
    - [Ext] includeInReward #
       - modifiers: onlyOwner
    - [Prv] _transferBothExcluded #
    - [Ext] excludeFromFee #
       - modifiers: onlyOwner
    - [Ext] includeInFee #
       - modifiers: onlyOwner
    - [Ext] setBuyTaxFeePercent #
       - modifiers: onlyOwner
    - [Ext] setBuyDevFeePercent #
       - modifiers: onlyOwner
    - [Ext] setBuyLiquidityFeePercent #
       - modifiers: onlyOwner
    - [Ext] setSellTaxFeePercent #
       - modifiers: onlyOwner
    - [Ext] setSellDevFeePercent #
       - modifiers: onlyOwner
    - [Ext] setSellLiquidityFeePercent #
       - modifiers: onlyOwner
    - [Ext] setMaxTxPercent #
       - modifiers: onlyOwner
    - [Ext] setSwapAndLiquifyEnabled #
       - modifiers: onlyOwner
    - [Ext] setSwapEnabled #
       - modifiers: onlyOwner
    - [Ext] setDevWalletAddress #
       - modifiers: onlyOwner
    - [Ext] setLiqWalletAddress #
       - modifiers: onlyOwner
    - [Ext] setNumTokensSellToAddToLiquidity #
       - modifiers: onlyOwner
    - [Ext] setContractFeesEnabled #
       - modifiers: onlyOwner
    - [Prv] _setRouter #
    - [Ext] setRouter #
       - modifiers: onlyOwner
    - [Ext]  ($)
    - [Prv] _reflectFee #
    - [Prv] _getValues
    - [Prv] _getTValues
    - [Prv] _getRValues
    - [Prv] _getRate
    - [Prv] _getCurrentSupply
    - [Prv] _takeLiquidity #
    - [Prv] _takedev #
    - [Prv] calculateTaxFee
    - [Prv] calculateDevFee
    - [Prv] calculateLiquidityFee
    - [Prv] removeAllFee #
    - [Ext] isExcludedFromFee
    - [Prv] _approve #
    - [Prv] _transfer #
    - [Prv] swapAndLiquify #
       - modifiers: lockTheSwap
    - [Prv] swapTokensForEth #
    - [Prv] addLiquidity #
    - [Prv] _tokenTransfer #
    - [Prv] _transferStandard #
    - [Prv] _transferToExcluded #
    - [Prv] _transferFromExcluded #
    - [Pub] setIsPair #
       - modifiers: onlyOwner
    - [Ext] setIsBanned #
       - modifiers: onlyOwner
    - [Ext] withdrawalToken #
       - modifiers: onlyOwner
    - [Ext] withdrawalBNB #
       - modifiers: onlyOwner