Boomer Squad NFT
Smart Contract Audit Report
Audit Summary
Boomer Squad is building a new platform where Boomer NFT owners can earn rewards.
For this audit, we reviewed Boomer Squad's contract at 0xf0EA472fB04dA831106940f58928b0e90e085BbB on the Cronos Chain Mainnet.
Audit Findings
Please ensure trust in the team prior to investing as they have substantial control in the ecosystem.
Date: June 7th, 2022.
Updated: June 25th, 2022 to include mainnet address.Finding #1 - BoomerDistribution - Informational
Description: The multiRelease() and mymultiPAYOUT() functions have opportunities for optimization.Risk/Impact: The loop continues to execute when an ID that the msg.sender does not own is found, which costs unnecessary gas.for (uint256 i = 0; i < id.length; i++) { ucount = Boomr.ownerOf(id[i]) == msg.sender ? uint256(1) : uint256(0); idChecked = idChecked + ucount; }
Recommendation: The team should modify the loop to break and revert the transaction when an ID not owned by the msg.sender is found.
Contract Overview
- This contract is used to distribute rewards to users holding Boomer NFTs.
- Users must provide the IDs of their Boomer NFTs to claim rewards; up to 500 IDs can be provided at a time.
- Rewards are determined by the amount of ETH supplied to the contract.
- Rewards are allocated proportionally amongst all the Boomer NFTs.
- The total number of Boomer NFTs is determined on deployment.
- Users can claim additional rewards if more ETH has been supplied to the contract.
- The Owner can withdraw all funds from the contract at any time.
- The Owner can update the Boomer NFT address at any time.
- The contracts utilize ReentrancyGuard to prevent against reentrancy attacks in applicable functions.
- As the contracts are implemented with Solidity v0.8.0, they are safe from any possible overflows/underflows.
Audit Results
Vulnerability Category | Notes | Result |
---|---|---|
Arbitrary Jump/Storage Write | N/A | PASS |
Centralization of Control | The Owner can withdraw all funds from the contract at any time. | WARNING |
Compiler Issues | N/A | PASS |
Delegate Call to Untrusted Contract | N/A | PASS |
Dependence on Predictable Variables | N/A | PASS |
Ether/Token Theft | N/A | PASS |
Flash Loans | N/A | PASS |
Front Running | N/A | PASS |
Improper Events | N/A | PASS |
Improper Authorization Scheme | N/A | PASS |
Integer Over/Underflow | N/A | PASS |
Logical Issues | N/A | PASS |
Oracle Issues | N/A | PASS |
Outdated Compiler Version | N/A | PASS |
Race Conditions | N/A | PASS |
Reentrancy | N/A | PASS |
Signature Issues | N/A | PASS |
Unbounded Loops | N/A | PASS |
Unused Code | N/A | PASS |
Overall Contract Safety | PASS |
Inheritance Chart
Function Graph
Functions Overview
($) = payable function
# = non-constant function
Int = Internal
Ext = External
Pub = Public
+ [Lib] Address
- [Int] isContract
- [Int] sendValue #
- [Int] functionCall #
- [Int] functionCall #
- [Int] functionCallWithValue #
- [Int] functionCallWithValue #
- [Int] functionStaticCall
- [Int] functionStaticCall
- [Int] functionDelegateCall #
- [Int] functionDelegateCall #
- [Int] verifyCallResult
+ Context
- [Int] _msgSender
- [Int] _msgData
+ Ownable (Context)
- [Pub] #
- [Pub] owner
- [Pub] renounceOwnership #
- modifiers: onlyOwner
- [Pub] transferOwnership #
- modifiers: onlyOwner
- [Int] _transferOwnership #
+ [Lib] SafeMath
- [Int] tryAdd
- [Int] trySub
- [Int] tryMul
- [Int] tryDiv
- [Int] tryMod
- [Int] add
- [Int] sub
- [Int] mul
- [Int] div
- [Int] mod
- [Int] sub
- [Int] div
- [Int] mod
+ ReentrancyGuard
- [Pub] #
+ [Int] BoomR
- [Ext] ownerOf
+ BoomerDistribution (Context, Ownable, ReentrancyGuard)
- [Pub] ($)
- [Pub] totalShares
- [Ext] ($)
- [Pub] totalReleased
- [Pub] shares
- [Pub] released
- [Prv] _pendingPayment
- [Pub] EMwithdraw ($)
- modifiers: onlyOwner
- [Pub] multiRelease #
- modifiers: nonReentrant
- [Pub] updateBRID #
- modifiers: onlyOwner
- [Pub] mymultiPAYOUT
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Typically, a smart contract audit is a comprehensive review process designed to discover logical errors, security vulnerabilities, and optimization opportunities within code. A SourceHat Audit takes this a step further by verifying economic logic to ensure the stability of smart contracts and highlighting privileged functionality to create a report that is easy to understand for developers and community members alike.
How Do I Interpret the Findings?
Each of our Findings will be labeled with a Severity level. We always recommend the team resolve High, Medium, and Low severity findings prior to deploying the code to the mainnet. Here is a breakdown on what each Severity level means for the project:
- High severity indicates that the issue puts a large number of users' funds at risk and has a high probability of exploitation, or the smart contract contains serious logical issues which can prevent the code from operating as intended.
- Medium severity issues are those which place at least some users' funds at risk and has a medium to high probability of exploitation.
- Low severity issues have a relatively minor risk association; these issues have a low probability of occurring or may have a minimal impact.
- Informational issues pose no immediate risk, but inform the project team of opportunities for gas optimizations and following smart contract security best practices.