Nemo Yield Trading Hack

TOTAL LOST $2.4M
Medium Price Oracle Manipulation sui

Summarize with AI

Affected Chain sui Incident surface
Recovered - No recovery reported
All-Time Rank #602 By amount stolen
Auditors 1 Prior security audit

Incident Overview

Nemo enables yield trading by splitting yield-bearing assets into principal and yield components. This lets users lock in fixed yields, speculate on future yield rates, or provide liquidity to earn fees — all while maintaining full composability with the DeFi ecosystem.

Incident Report

Protocol / Project Nemo Yield Trading
Date of Incident
Affected Chain(s) sui
Attack Technique Price Oracle Manipulation
Classification Protocol Logic
Primary Source View Post-Mortem

Protocol Information

Protocol Type Yield
Smart Contract Language Move
Official Website www.nemoprotocol.com/
Protocol Twitter/X @Nemoprotocol

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 price oracle manipulation and Solidity and EVM internals
Capital Required Seed capital to cover gas and initial position setup
On-Chain Access Ability to interact with sui smart contracts and deploy a custom exploit contract
Protocol Analysis Identification of the exploitable vulnerability in Nemo Yield Trading'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? Yes — skilled auditors routinely flag Price Oracle Manipulation vulnerabilities in code review
Audited by Audit Report 1 — still lost $2.4M. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to Nemo Yield Trading, these are the critical security checks that could have prevented this incident (September 2025).

  • Verify all logic paths related to Price Oracle Manipulation are guarded by proper access controls and input validation - see the Oracle Manipulation & Price Manipulation attack class for patterns
  • Audit oracle price feeds for manipulation risks - ensure time-weighted average prices (TWAPs) or multi-source aggregators are used, not spot prices
  • 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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Security Audit History

Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Oracle Manipulation & Price Manipulation examples →

Sources & References

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