How much was lost in the dxHub hack?

The dxHub hack resulted in $5K in losses on December 13, 2020.

What attack technique was used in the dxHub exploit?

The dxHub 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.

dxHub Hack

TOTAL LOST $5K

Low Dec 13, 2020 Rugpull ethereum

Affected Chain ethereum Incident surface

Recovered - No recovery reported

All-Time Rank #1975 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

On the Telegram announcement group, the project team invited people to join the dxHub token sale event. The TG group has 34 thousand members, however, most of the accounts of community members looked like bots. The tokenomic of the project was devoid of logic. The funds from the fundraising event came directly to the team's ETH address. The team's GitHub page lacks development history:

https://github.com/dxHubCoin

Users have complained about not receiving the airdropped tokens. 8.4 ETH, gathered from the sale, were transferred and converted into USDT.

Transfer transactions:

https://etherscan.io/tx/0xa786aafe…e3bd7a

https://etherscan.io/tx/0x75e3fea3…fe98a9

Incident Report

Protocol / Project dxHub

Date of Incident December 13, 2020

Affected Chain(s) ethereum

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token dxHub Coin

Official Website dxhub.ninja/index.html

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 ethereum smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in dxHub'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 dxHub, these are the critical security checks that could have prevented this incident (December 2020).

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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Sources & References

01
Source 1 https://t.me/defiyield_ann/297

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2020

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