How much was lost in the Cornerchain hack?

The Cornerchain hack resulted in $51K in losses on September 06, 2022.

What attack technique was used in the Cornerchain exploit?

The Cornerchain exploit utilized Rugpull. Understanding this attack vector is critical for smart contract auditors and developers building secure DeFi protocols.

How can developers prevent similar smart contract attacks?

Preventing smart contract hacks requires a combination of secure coding practices, thorough security audits, and understanding common attack vectors like reentrancy, oracle manipulation, and access control flaws. Smart Contract Hacking (SCH) provides hands-on training to help developers and auditors identify and prevent vulnerabilities before deployment.

Cornerchain Hack

TOTAL LOST $51K

Low Sep 06, 2022 Rugpull

Affected Chain 2022 Incident surface

Recovered - No recovery reported

All-Time Rank #1712 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

Quick Summary

The Cornerchain project has been rug pulled by the NeoFinance team. The team made profit of 196 $BNB.

Details of the Exploit

The scammer deployed the token to the BSC network minting to his/her account 10M $CNR tokens and pair on PancakeSwap was created:

https://bscscan.com/tx/0x76b97203…99a9b1

Scammer then added liquidity by depositing 300 $BNB:

https://bscscan.com/tx/0x2f863764…fb5e8b

When people started investing their funds in the token, scammers removed the liquidity taking profit of 196 $BNB:

https://bscscan.com/tx/0xb17ce0d9…56ceaf

Block Data Reference

Scammer address: https://bscscan.com/address/0x8f0d9acb…2387e4

Incident Report

Protocol / Project Cornerchain

Date of Incident September 06, 2022

Attack Technique Rugpull

Classification Token

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token CNR

Official Website ozonechain.com/

Protocol Twitter/X @ozonechain

Team Anonymous

Source Code Unverified

Market Context at Time of Hack

Protocol Links

GitHub

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of rugpull and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Cornerchain's contract logic - root cause: token

Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block

Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to Cornerchain, these are the critical security checks that could have prevented this incident (September 2022).

Verify all logic paths related to Rugpull are guarded by proper access controls and input validation
Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2022

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