Every public EVM drainer technique from 2023–2024 is dead or dying in 2026. Permit2 — once the standard injection method — is now immediately flagged by MetaMask, Rabby, and WalletGuard on any non-Uniswap domain. Running a Permit2-based drainer today means paying for hosting on a tool with a 48-hour operational lifespan.
This guide covers what actually works in 2026: Seaport 1.6, EIP-7702, and EIP-712 Typed Data v4 injection — the techniques deployed in Impala's EVM Drainer.
Why Permit2 Is Dead
Permit2 was introduced by Uniswap as an off-chain ERC-20 approval mechanism — one signature grants transfer permission for a token amount without an on-chain approval transaction. It was efficient and legitimate. Then drainer operators started using it to obtain blanket transfer permissions from victim wallets.
The security response was systematic: MetaMask added a Permit2 origin check — any Permit2 signature from a non-Uniswap domain displays a prominent warning. WalletGuard, Rabby, and Revoke.cash added similar detection. By 2025, a new Permit2-based drainer deployment would be flagged within hours of receiving its first few victims, as domain reputation systems updated.
Seaport 1.6: The Replacement
Seaport 1.6 is OpenSea's NFT marketplace protocol — used by OpenSea, Blur, LooksRare, and dozens of other NFT platforms for millions of legitimate transactions daily. Its signature structure is an EIP-712 Typed Data format representing an offer/consideration NFT trade.
Impala's injection engine constructs Seaport-compatible signatures where the "consideration" item is the victim's token or ETH balance rather than an NFT. The signature looks, to wallet scanners, like an OpenSea trade. It passes MetaMask's pattern matching. On confirmation, the asset transfers to the operator's wallet.
Why Seaport Works Where Permit2 Doesn't
- Origin agnostic: Seaport signatures are expected from any NFT marketplace domain — there's no whitelist check.
- Volume cover: Billions in Seaport transactions happen daily. A few hundred draining transactions are invisible noise.
- Legitimate-looking structure: The signature format includes collection addresses, item types, and consideration structures — all valid ERC-721/ERC-20 references.
EIP-7702: Account Abstraction Layer
EIP-7702, activated on Ethereum in 2025 as part of the Pectra upgrade, allows an EOA (externally owned account) to temporarily adopt smart contract functionality. This enables delegated execution — where a designated address can execute transactions on behalf of a wallet within session-defined parameters.
Impala's EVM drainer uses EIP-7702 to construct delegation signatures that appear to be legitimate session-key setups (common in mobile wallet and dApp authorization flows) but include drain instructions in the delegation scope. The pattern matches legitimate Account Abstraction usage — not flagged by current heuristics.
Protocol Coverage: What Gets Extracted
Impala's EVM drainer covers 200+ protocols automatically — no manual configuration per protocol. Asset detection happens in under 0.5 seconds via parallel RPC calls, sorted by USD value:
- Native ETH and all ERC-20 tokens
- ERC-721 NFTs and ERC-1155 multi-tokens
- Uniswap V3 concentrated liquidity positions (NFT position tokens)
- Aave V3 and Compound supply positions (aTokens, cTokens)
- Lido stETH, Rocketpool rETH, EigenLayer restaking
- Curve LP tokens, Convex positions
- Blur-listed NFTs (Blend lending + listed)
- Pendle PT/YT yield tokens
Multi-Chain Deployment
A single Impala EVM deployment covers 30+ networks. When a wallet connects, the drainer detects the chain and loads the appropriate injection parameters. Chain-specific pages for Impala:
Access Impala's EVM drainer at impala.cam/register. Starter: $2,000 one-time.