Shopping.io
0x64b78325d7495D6d4be92f234fa3f3B8d8964B8b 0x64b7...964B8b

Static analysis Dynamic analysis Symbolic Execution SWC check

There comes a time when innovation and technology not only challenge the status quo, but establish a new one. Massive distrust in financial legacy systems and inflation engulfs broken economies, leaving millions to seek alternatives. From Bitcoin ATMs to corporate acceptance, cryptocurrencies have challenged how we perceive currency as a whole leading to its mass adoption; the likes of which has never been seen. With this crypto adoption comes the need for a place to spend it. That's where Shopping.io comes in. Shopping.io is the first functioning and most well respected bridge between crypto and e-commerce, in a rapidly changing tech-centric world. Founded by a veteran group of dropshippers, crypto developers, and creative marketers, Shopping.io aspires to forever change how we purchase things online.

Contract address
0x64b7...964B8b
Network Ethereum Mainnet
License MIT
Compiler v0.8.7 v0.8.7+commit.e28d00a7
Type ERC20
Language Solidity
Request date 2022/11/19
Revision date 2022/11/19
Critical
Passed
High
Passed
Medium
Passed
Optimization
Passed

Owner privileges

No critical issues found The contract does not contain issues of high or medium criticality. This means that no known vulnerabilities were found in the source code.
Contract owner can mint It is possible to mint new tokens.
Contract owner cannot blacklist addresses. It is not possible to lock user funds by blacklisting addresses.
Contract owner can set high fees Contract owner is able to set fees above 25%. Very high fees can also prevent token transfer.
Token transfer can be locked Owner can lock user funds with owner functions.
Token can be burned There is a function to burn tokens in the contract.
Ownership is not renounced Contract can be manipulated by owner functions.
Comments

  • Default admin is able to
    • set the fee above 25%
  • Minter_Role is able to
    • mint new tokens
  • Owner can lock user funds by
    • setting fees to 100%. That causes that the receiver will get 0 tokens
    • pausing the contract
  • Own tokens can be burned by caller

Audit Scope

This audit covered the following files listed below with a SHA-1 Hash. The above token Team provided us with the files that needs to be tested.

We will verify the following claims:
  • Correct implementation of Token standard
  • Deployer cannot mint any new tokens
  • Deployer cannot burn or lock user funds
  • Deployer cannot pause the contract
  • Overall checkup (Smart Contract Security)
The auditing process follows a routine series of steps:
  • Review of the specifications, sources, and instructions provided to SolidProof to make sure we understand the size, scope, and functionality of the smart contract.
  • Manual review of code, which is the process of reading source code line-by-line in an attempt to identify potential vulnerabilities.
  • Comparison to specification, which is the process of checking whether the code does what the specifications, sources, and instructions provided to SolidProof describe.
  • Test coverage analysis, which is the process of determining whether the test cases are actually covering the code and how much code is exercised when we run those test cases.
  • Symbolic execution, which is analysing a program to determine what inputs causes each part of a program to execute.
  • Best practices review, which is a review of the smart contracts to improve efficiency, effectiveness, clarify, maintainability, security, and control based on the established industry and academic practices, recommendations, and research.
  • Specific, itemized, actionable recommendations to help you take steps to secure your smart contracts.

A file with a different Hash has been modified, intentionally or otherwise, after the security review. A different Hash could be (but not necessarily) an indication of a changed condition or potential vulnerability that was not within the scope of this review.

Functions
public

68

State variables
public

6

Total lines
of code

1893

Capabilities
Hover on items

Audit Details

Throughout the review process, care was taken to evaluate the repository for security-related issues, code quality, and adherence to speciïŹcation and best practices. To do so, reviewed line-by-line by our team of expert pentesters and smart contract developers, documenting any issues as there were discovered.

Risk represents the probability that a certain source-threat will exploit vulnerability, and the impact of that event on the organization or system. Risk Level is computed based on CVSS version 3.0.

low Issues

Pending

#1 Issue

Local variables shadowing (shadowing-local)

SpiExt.sol

L1630

L1630

Description

Rename the local variables that shadow another component.

informational Issues

Pending

#1 Issue

Tautology or contradiction (tautology)

SpiExt.sol

L1708-1716

L1792-1799

Description

Fix the incorrect comparison by changing the value type or the comparison.

Diagrams

Disclaimer

SolidProof.io reports are not, nor should be considered, an “endorsement” or “disapproval” of any particular project or team. These reports are not, nor should be considered, an indication of the economics or value of any “product” or “asset” created by any team. SolidProof.io do not cover testing or auditing the integration with external contract or services (such as Unicrypt, Uniswap, PancakeSwap etc’...)

SolidProof.io Audits do not provide any warranty or guarantee regarding the absolute bug- free nature of the technology analyzed, nor do they provide any indication of the technology proprietors. SolidProof Audits should not be used in any way to make decisions around investment or involvement with any particular project. These reports in no way provide investment advice, nor should be leveraged as investment advice of any sort.

SolidProof.io Reports represent an extensive auditing process intending to help our customers increase the quality of their code while reducing the high level of risk presented by cryptographic tokens and blockchain technology. Blockchain technology and cryptographic assets present a high level of ongoing risk. SolidProof’s position is that each company and individual are responsible for their own due diligence and continuous security. SolidProof in no way claims any guarantee of security or functionality of the technology we agree to analyze.