How much was lost in the Astrid Finance hack?

The Astrid Finance hack resulted in $228K in losses on October 29, 2023.

What attack technique was used in the Astrid Finance exploit?

The Astrid Finance exploit utilized Withdraw Function Argument Manipulation. 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.

Astrid Finance Hack

TOTAL LOST $228K

Low Oct 29, 2023 Withdraw Function Argument Manipulation ethereum

Affected Chain ethereum Incident surface

Recovered - No recovery reported

All-Time Rank #1252 By amount stolen

Protocol Type Dexs Target category

Incident Overview

The Asteria DEX represents an innovative Automated Market Maker (AMM) protocol renowned for its high capital efficiency.

Incident Report

Protocol / Project Astrid Finance

Date of Incident October 29, 2023

Affected Chain(s) ethereum

Attack Technique Withdraw Function Argument Manipulation

Classification Protocol Logic

Primary Source View Post-Mortem

Protocol Information

Protocol Type Dexs

Official Website rai.finance/

Protocol Twitter/X @asteriafinance

Market Context at Time of Hack

Token Categories

Ethereum Ecosystem Base Ecosystem

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 withdraw function argument manipulation 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 Astrid Finance's contract logic - root cause: protocol logic

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? Likely — with a thorough Withdraw Function Argument Manipulation audit checklist and test coverage

If you're auditing a protocol with similar architecture to Astrid Finance, these are the critical security checks that could have prevented this incident (October 2023).

Verify all logic paths related to Withdraw Function Argument Manipulation 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://twitter.com/Phalcon_xyz/status/1718455634155409489

Threat Assessment

Severity Level

LOW

Attack Vector Withdraw Function Argument Manipulation
Root Cause Protocol Logic
Year 2023

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