0xGhost_Dev 🛠️👻

Smart Contract Security Researcher & Web3 Developer | Specializing in ERC-4626 primitives, modular EVM frameworks, and Foundry simulations. Whitehat hunting at

[0xGhost_Dev 🛠️👻 @0xghost_dev]

🛠️ 0xGhost | Web3 Security Researcher 👻

Breaking code to build a safer DeFi stack.

🔍 Specializing in:
• ERC-4626 Yield Audits
• Modular EVM Logic Flaws
• Advanced Foundry Fuzzing

Currently securing @TrestleDeFi. Let's make sure it's actually trustless. 👇

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@vivek_sagar @opencode I use @opencode as a CLI agent to audit open-source targets. I feed it JS bundles/source code to hunt for hardcoded API keys, IDORs, and leaked endpoints, then let it script custom payloads to test. Always run it in a sandbox! 🔥

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@opencode Time for some heavy recon. 1M context means plenty of room to feed it entire codebases and hunt for hidden vulns. Let's see if Space Bunny can handle the heat or if it leaks bugs. 🐇💻

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@cline Huge win for devs and security researchers! Being able to throw complex edge cases at Kimi K3 for free while hunting or building is a massive game-changer. Thanks for fueling the ecosystem, team! 🫡🔥

[0xGhost_Dev 🛠️👻 @0xghost_dev]

Standard unit tests only hit paths you expect. Use Foundry’s native fuzzing engine to inject thousands of randomized parameters. Run 10k forge cycles to catch silent math truncation or zero-input edge cases. 🛠👻 #Foundry

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@opencode @opencode That's huge! Meanwhile, I'm having trouble getting the OpenCode desktop app to run on my end. Anyone else experiencing issues today or know a quick fix? 🛠️

[0xGhost_Dev 🛠️👻 @0xghost_dev]

Early depositors can get reeked by the ERC-4626 Share Inflation Vector (Donation Attack). Protect your vault by implementing virtual shares and offsets to kill the rounding-to-zero exploit before launch. 🛠👻 #BugBounty #Web3

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@opencode Nice! Time to see how well Flash v4.1 handles smart contract auditing and fuzzing workflows. Let's see if it can spot the edge cases before the exploiters do. 🔍🕵️‍♂️

[0xGhost_Dev 🛠️👻 @0xghost_dev]

ERC-20 integration warning: Tokens like USDT don't return a boolean on transfer failure, which completely breaks strict return checks. Wrap your asset operations in OpenZeppelin’s SafeERC20 (safeTransfer). 🛠👻 #Solidity

[0xGhost_Dev 🛠️👻 @0xghost_dev]

ead-only reentrancy is wrecking DeFi. If Contract A updates storage variables too late, Contract B can read a stale state mid-execution to manipulate external lending logic. Enforce Checks-Effects-Interactions everywhere! 🛠👻
#Web3

[0xGhost_Dev 🛠️👻 @0xghost_dev]

Don't rely on tx.origin for authorization. If a vault owner interacts with a malicious contract, it can call your vault and drain it using their origin. Stick to msg.sender for standard ownership checks. 🛠👻
#DeFi #Ethereum

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@opencode Frontier level models for free means the speed of deployment is about to go vertical. As a bug bounty hunter, I just see a massive wave of AI-generated smart contracts coming to mainnet. Time to fuzz test those edge cases 💀.

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@variational_io The math speaks for itself. Sub-0.003% spread on $1M US100 is wild—10x cheaper than Hyperliquid with zero fees. Raising the OI cap was mandatory to handle this volume.

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@clawdit_xyz @Zai_org Exactly. Single-call specs fail because the vault ratio distortion requires an active state. Foundry's stateful invariant testing is mandatory here to simulate multi-call sequences that manipulate rounding and expose path-dependent math bugs across multiple depositors.

[0xGhost_Dev 🛠️👻 @0xghost_dev]

Avoid address(this).balance for contract state. Attackers can break your logic by forcing ETH into your contract via selfdestruct or coinbase rewards. Always use an independent internal accounting system. 🛠👻 #Web3Security #Solidity

[0xGhost_Dev 🛠️👻 @0xghost_dev]

@clawdit_xyz @Zai_org Spot on. Models know textbook theory, but struggle with constraint solving on live math. Fuzzing forces execution on those exact decimals & rounding directions. That first-deposit nuance is where LLMs assume safety but invariants break.

[0xGhost_Dev 🛠️👻 @0xghost_dev]

5/5 The Defense? 🛡️NEVER use spot prices for collateral valuation.
1️⃣ Integrate decentralized oracles like Chainlink Data Feeds.
2️⃣ Implement a Time-Weighted Average Price (TWAP) with a strict https://t.co/cZDi8RY7G7 your pricing architecture before deployment!
#DeFi #Ethereum

[0xGhost_Dev 🛠️👻 @0xghost_dev]

1/5 🚨 Flash loans + AMM spot prices = Instant DeFi Exploit.Relying on direct pool balances for asset valuation is a critical vulnerability. Attackers can skew pool ratios within a single block, tricki dependent lending vaults.Let's look at a Foundry PoC 👇 #Web3Security #Foundry

[0xGhost_Dev 🛠️👻 @0xghost_dev]

4/5
vm.prank(attacker);
// 2. Skew the AMM pool spot ratio
ammPool.swap(address(tokenA), 1000 ether);

// 3. Drain the target lending vault
uint256 manipulatedPrice = targetVault.getPrice();
targetVault.borrowMax(manipulatedPrice);
}

🛠👻