Individual skill
oracle-manipulation
Hunt single-block oracle manipulation — spot-price AMM oracles, manipulable TWAP, dependent calculations, missing staleness checks.
packages/decepticon/decepticon/skills/standard/contracts/oracle-manipulation/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
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- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- agent Repository topic
- ai Repository topic
- cybersecurity Repository topic
- hacking Repository topic
- langchain Repository topic
- langgraph Repository topic
- llm Repository topic
- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- engineering Derived category
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# Oracle Manipulation Playbook
DeFi protocols that read a price from an on-chain source are
vulnerable when the source can be moved within a single transaction
or block. Classic vectors:
1. **Spot-price AMM oracle** — `reserve1 / reserve0` of a Uniswap V2 pool. Anyone with enough capital (or a flash loan) can push the price for one block.
2. **Manipulable TWAP** — short window TWAP, or TWAP over a low-liquidity pool.
3. **Single Chainlink feed without staleness check** — feed returns 0 / stale → uses 0 in math.
4. **Custom oracle reading from manipulable storage** — e.g., a "fair-price" oracle that reads `totalSupply()` of an LP token alongside reserves.
5. **L2 sequencer offline** — L2 oracles need a "is sequencer up?" check or attacker can exploit when sequencer downs and feeds freeze.
## Audit steps
