The Base blockchain witnessed one of its most devastating meme coin exploits on May 26, 2024, when an attacker drained approximately $881,686 from the NORMIE token through a sophisticated flash loan attack. The incident wiped out 99% of the token’s value in minutes, crashing its market capitalization from roughly $41 million to approximately $35,000. With Bitcoin trading near $68,500 and Ethereum around $3,826 at the time, the broader crypto market remained strong — making this exploit a stark reminder that even smaller tokens carry outsized security risks.
The Exploit Mechanics
The attack centered on a critical vulnerability in the NORMIE smart contract’s premarket_user mechanism. The contract included a feature where any address receiving the same number of tokens as the deployer’s balance was automatically added to a privileged list. Once on this list, the address could trigger unexpected token minting behavior.
The attacker began by swapping 171,955 NORMIE tokens for 2 WETH on SushiSwap. They then swapped exactly 5 million NORMIE — an amount matching the deployer account’s balance. This precise matching was the key: it added the attacker’s contract address to the premarket_user list, unlocking the exploit path.
Next, the attacker flash-loaned 11,333,141 NORMIE tokens and systematically manipulated the token supply. They swapped 9,066,513 NORMIE for 65.97 WETH, then executed repeated transfers of 2,266,628 NORMIE to the liquidity pair, followed by calls to the skim() function to withdraw excess tokens. Because the attack contract was now a recognized premarket user, each transaction triggered the contract to mint NORMIE tokens to its own address. The Normie contract ended up holding over 650 billion tokens despite having a legitimate supply of only 1 billion.
Affected Systems
The primary victim was the NORMIE community — holders of the Base blockchain meme coin who saw their positions become virtually worthless overnight. The attack specifically targeted the NORMIE/WETH liquidity pair on SushiSwap. The total damage reached 224.98 WETH, equivalent to approximately $881,686 at the time of the attack.
The attacker’s initial funding was traced back to a Secret Network wallet, where approximately $405 worth of SCRT was bridged to Arbitrum via Osmosis and SquidRouter. An additional 8,000 axUSDC was bridged through Axelar Bridge, then swapped for WETH and bridged to Base via Across Protocol — demonstrating the cross-chain complexity of modern attack preparation.
The Mitigation Strategy
In an unusual turn of events, the attacker sent a message to the Normie deployer offering to return 90% of the stolen funds — roughly 200 ETH — provided certain conditions were met. The attacker demanded that the project combine the returned funds with an additional 600 ETH from the developer wallet and launch a new token to reimburse NORMIE holders. The attacker would keep approximately 9.17 ETH as their cut.
This quasi-negotiation highlights the growing trend of white-hat bargaining in DeFi exploits, where attackers leverage community pressure to extract partial returns. While not a true mitigation strategy, it demonstrates that projects should maintain accessible communication channels and emergency response plans for post-exploit negotiations.
Lessons Learned
The NORMIE exploit exposes the dangers of forking smart contract code without thorough security audits. The premarket user mechanism was likely copied from another contract without full understanding of its edge cases. Projects deploying on any blockchain — including newer Layer 2 networks like Base — must conduct comprehensive audits that test privilege escalation paths and unexpected state transitions.
Key takeaways include the importance of limiting administrative functions, implementing flash loan resistance mechanisms, and ensuring that token supply controls cannot be manipulated through indirect means. The exploit also demonstrates that attack costs can be remarkably low — the attacker funded their entire operation with less than $10,000 in initial capital.
User Action Required
If you held NORMIE tokens at the time of the exploit, monitor the project’s official channels for information about any token reimbursement program. Always verify the audit status of any token before investing significant funds, particularly for meme coins and recently launched projects. Use hardware wallets for larger holdings and consider setting up transaction alerts for tokens in your portfolio. For broader protection, avoid keeping more than you can afford to lose in any single unvetted token contract.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Always conduct your own research before making investment decisions.
matching the deployer balance exactly to trigger premarket_user is clever social engineering on top of the flash loan. normie devs handed them the keys
99 percent value wipe from 41m mcap to 35k in minutes. base network is becoming the new bsc for meme token rugs
the attacker matched the deployer balance exactly. 5M tokens. that level of precision means they read the contract line by line before striking
they literally had to count the deployer tokens before attacking. probably spent weeks testing on forked mainnet. thats not a hacker, thats a security auditor who went rogue
reading line by line is generous. they probably used slither or some automated tool and it flagged the address comparison immediately
katya is giving them too much credit. slither is free and takes 30 seconds to run. a 41m market cap token with zero static analysis is pure negligence not sophistication
slither_fan_ slither is free and takes 30 seconds but teams with 41M market caps skip it because shipping fast matters more than shipping safe. incentives are cooked
Linh P. 41M mcap and zero static analysis is insane but also standard for base in may 2024. every team was racing to deploy and audits were treated as optional
the precision of matching exactly 5M tokens to the deployer balance is what gets me. this wasnt some brute force attack, someone read that contract carefully
Katya D. slither would have flagged this in 10 seconds. the fact that nobody ran basic static analysis on a token with $41M market cap is negligence
Mira J. a $41M market cap token and nobody ran a free slither scan. the premarket_user equality check had zero validation. depressing
$881K stolen and the attacker probably spent $50 on gas. ROI on crime is absurd in this space
and they walked away clean because Base was still new enough that monitoring tools barely existed. wild west era
base was a free-for-all in 2024. no formal verification requirement, no audit mandates. $881K lost because nobody checked if premarket_user was sane
segfault_ base was 3 weeks old when this happened. the chain itself was fine, the token contract was the problem. dont blame the chain for a copy paste dev team
formal verification would have caught this in 5 minutes. the premarket_user check was literally one equality comparison, no range validation, no whitelist
degen_404 fr, the ROI on exploiting a broken equality check vs actually building something is depressing. 5M token comparison bug cost $881K
the flash loan cost was basically zero gas on base. attacker borrowed, exploited, repaid in one tx. the economics of exploiting on L2s are terrifyingly efficient
Theodor N. flash loan attack costing $50 in gas to drain $881K. L2 fee efficiency cuts both ways
Theodor N. flash loan attacks on L2 are basically free. the attacker paid less in gas than a cup of coffee to drain nearly a million dollars
5 million NORMIE matching the deployer balance to trigger the hidden premarket_user path is such a specific exploit. someone read that contract line by line
base_chain_skeptic reading line by line implies patience. most exploits like premarket_user are found with automated fuzzing not manual review. someone ran a fuzzer and the equality bug popped immediately
41M market cap to 35K in minutes. the premarket_user feature was basically a self destruct button hidden in plain sight. imagine deploying code where receiving a specific token amount grants admin privileges
one == comparison. thats it. 5 million tokens matched to deployer balance and the whole thing imploded. $881K gone because nobody tested an equality check
equality_bug the scariest part is the deployer balance was publicly readable on chain. attacker just checked etherscan, matched the number, done