THUNDERSTORM - Smart Contract Audit Report

Summary

THUNDERSTORM is a deflationary token with frictionless fee redistribution on the Binance Smart chain.

We reviewed THUNDERSTORM's token contract deployed at 0xee84e260fae848f55ebde322b9595682590c456c on the Binance Smart Chain.

Overview of the Contract:
THUNDERSTORM is a modified fork of Reflect Finance.
Users who hold tokens will automatically receive a portion of the fees from a transaction tax set in the contract.
The contract also implements a variable burn fee on each transaction.
The burn fee will increase over time, starting at 5% and raising to 12% as more trading volume occurs.
Each time a total of 1.275 million tokens are burned, an additional 637,500 tokens will be minted and frictionlessly redistriuted among token holders via a rebase.
Burn fees will end once the total supply reaches 550,000
In addition, the contract implements a maximum amount of tokens that can be sent in a transaction, set at 100 million tokens.
22.6% of the token's supply is held as liquidity in the Pancakeswap pool. 97.7% of this liquidity is locked for 6 months.
8% of the token's supply is locked and will be claimable by the team in 1 month. The next largest wallet has 3.6%.

The owner has the ability to set the burn fee that is is part of the transaciton tax. The value must be between 0% and 15%.
Owners have the ability to exclude and include users from the fee mechanism.
The logic in the transfer function will becomes more expensive per-transfer as time goes on due to the unique variable burn logic. As this is already deployed, this is informational.
Some functions could be declared external instead of public to save on gas. As this is already deployed, this is also informational.
The contract utilizes SafeMath libraries to prevent overflows.
Audit Findings Summary
No security issues were detected in the analysis.
Date: April 7th, 2021

External Threat Results

Vulnerability Category	Notes	Result
Arbitrary Storage Write	N/A	PASS
Arbitrary Jump	N/A	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

Inheritence Chart

Multi-file Token

Functions Overview

												
($) = payable function
 # = non-constant function
   
 Int = Internal
 Ext = External
 Pub = Public

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

 + [Int] IBEP20 
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #

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

 + [Lib] Address 
    - [Int] isContract
    - [Int] sendValue #
    - [Int] functionCall #
    - [Int] functionCall #
    - [Int] functionCallWithValue #
    - [Int] functionCallWithValue #
    - [Prv] _functionCallWithValue #

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

 +  Thunderstorm (Context, IBEP20, Ownable)
    - [Pub]  #
    - [Pub] name
    - [Pub] symbol
    - [Pub] decimals
    - [Pub] totalSupply
    - [Pub] balanceOf
    - [Pub] transfer #
    - [Pub] allowance
    - [Pub] approve #
    - [Pub] transferFrom #
    - [Pub] increaseAllowance #
    - [Pub] decreaseAllowance #
    - [Pub] isExcluded
    - [Pub] totalFees
    - [Pub] totalBurn
    - [Pub] deliver #
    - [Pub] reflectionFromToken
    - [Pub] tokenFromReflection
    - [Ext] excludeAccount #
       - modifiers: onlyOwner
    - [Ext] includeAccount #
       - modifiers: onlyOwner
    - [Prv] _approve #
    - [Prv] _transfer #
    - [Prv] _transferStandard #
    - [Prv] _transferToExcluded #
    - [Prv] _transferFromExcluded #
    - [Prv] _transferBothExcluded #
    - [Prv] _burnAndRebase #
    - [Prv] _getValues
    - [Prv] _getTValues
    - [Prv] _getRValues
    - [Prv] _getRate
    - [Prv] _getCurrentSupply
    - [Prv] _setBurnFee #
    - [Ext] _setFeeStage #
       - modifiers: onlyOwner
    - [Pub] _getBurnFee
    - [Prv] _getMaxTxAmount
    - [Pub] _getCycle
    - [Pub] _getBurnCycle
    - [Pub] _getTradedCycle
    - [Int] _rebase #
    - [Int] _initializeFinalStage #

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