80-20 - Smart Contract Audit Report

Summary

80-20 is a scam platform that promises to provide guarenteed daily returns on ETH deposited into the contract; and provides additonal rewards for referring other users to make deposits. We audited 80-20's main contract, deployed at 0x9b4ea303ca6302dfa46b73bc660598c65de96b3d on the Ethereum Mainnet. 80-20 achieves their guarenteed daily returns through a pyramid scheme, where the interest payments of early investors are taken from the deposits of new users. As with any pyramid/Ponzi scheme, this is not sustainable, and users who invest later in the course of the project will lose their ETH. In this Ponzi scheme, the project pays its initial investors interest using money raised from new investors. Eventually, the project will no longer be able to find enough new investors to pay the users who have already deposited, and the scheme collapses leading to massive loss of funds. This is very similar to the infamous Bank of Tron & Tron Chain.
80-20 is a Pyramid Scheme 80-20 is a Ponzi Scheme

Audit Findings:
No issues from outside attackers were identifed.
This is a Ponzi/pyramid scheme. Investing later in the lifecycle of the project likely will result in loss of funds.
Date: April 15th, 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/Token Thief	N/A	PASS
Exceptions	N/A	PASS
External Calls	N/A	PASS
Integer Over/Underflow	N/A	PASS
Multiple Sends	N/A	PASS
Oracle	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

80-20 Smart Contract Graph

Inheritence Chart

80-20 Smart Contract Inheritance

Functions Overview



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

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

 +  auto_pool (IERC20)
    - [Pub]  #
    - [Pub] buy ($)
    - [Ext]  ($)
    - [Ext]  ($)
    - [Pub] reinvest #
       - modifiers: onlyhodler
    - [Pub] exit #
    - [Pub] withdraw #
       - modifiers: onlyhodler
    - [Pub] sell #
       - modifiers: onlybelievers,isPremintedTokenLocked
    - [Pub] approve #
    - [Pub] increaseAllowance #
    - [Pub] decreaseAllowance #
    - [Pub] transfer #
       - modifiers: onlybelievers,transferingLockedToken
    - [Pub] transferFrom #
       - modifiers: transferingLockedToken
    - [Pub] distributePremintedToken #
       - modifiers: onlyOwner
    - [Pub] changeDev1Address #
       - modifiers: onlyOwner
    - [Pub] changeDev2Address #
       - modifiers: onlyOwner
    - [Pub] changeGSGAddress #
       - modifiers: onlyOwner
    - [Pub] totalEthereumBalance
    - [Pub] totalSupply
    - [Pub] myTokens
    - [Pub] myDividends
    - [Pub] balanceOf
    - [Pub] dividendsOf
    - [Pub] sellPrice
    - [Pub] buyPrice
    - [Pub] calculateTokensReceived
    - [Pub] getReferrer
    - [Pub] calculateEthereumReceived
    - [Pub] allowance
    - [Pub] loyaltyOf
    - [Pub] userReferrer
    - [Int] purchaseTokens #
    - [Int] _approve #
    - [Int] ethereumToTokens_
    - [Int] tokensToEthereum_
    - [Int] register #
    - [Int] distributeToSponsor #
    - [Int] distributingEthers #
    - [Int] sqrt

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

Go Home