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The Analysis of the DAOMaker Attack

Code Auditing

August 12, 2021

Attack Analysis

The attack transaction:

0x26aa86261c834e837f6be93b2d589724ed5ae644bc8f4b8af2207e6bd70828f9

The attack smart contract is an open source one.

Step 1: 0x054e sends a transaction to grant the admin role to 0x0eba of the wallet (0x41b8).

Then 0x0eba grants the “DAO contracts” role to 0x1c93.

At last, the 0x1c93 (XXX) invoke the function withdrawFromUser to transfer the money to the XXX contract.

Interesting, the victim 0x41b8 is created by 0x054e.

Summary

In summary, 0x054e creates the victim 0x41b8 wallet. Then 0x054e grants the admin role to 0x0eba, who further grants the “DAO Contracts” role to 0x1c93. At last 0x1c93 withdraws the money from the victim.

Sep 24 2026Security Insights

~$11.3M Lost: Multicall Router, Nostra | BlockSec Weekly

This report, covering 2026/09/14 - 2026/09/20, examines two security incidents with approximately $11.3M in combined losses, on Ethereum and Starknet. In the larger one, a multicall router accepted its own address as a dispatch target, so the nested call reached the Gateway module of a Safe wallet carrying the router's own already-authorized identity instead of the external caller's, and roughly 2,900 `aEthrsETH` was routed out of that wallet into an attacker-created Uniswap v4 pool. On Starknet, Nostra's oracle integration required a minimum of only one aggregated source, so when only two of the three configured price sources reached the aggregation, a manipulated thin-pool quote averaged with a normal quote to value `NSTR` at roughly $49.52, supporting approximately $3.5M of borrowing against overvalued collateral.

Sep 17 2026Security Insights

~$320M Lost: Liquid Network, Symbiosis Exploits | BlockSec

This report, covering 2026/09/07 - 2026/09/13, examines two security incidents that caused approximately $320M in losses, including the Liquid Network exploit of 2026/09/06 that the previous report did not cover. The larger was that Liquid Network exploit, where the rangeproof validation cache in Elements derived its key by hashing four fields — two of them variable in length — concatenated with nothing marking the boundaries between them, so a verdict recorded for one output was returned for another whose proof was never examined, letting the attacker create 4,000 unbacked L-BTC and peg out nearly all of them as bitcoin. On the Bitcoin route of the Symbiosis cross-chain bridge, spanning BNB Smart Chain, Ethereum and Rootstock, off-chain code that reads Bitcoin deposits took the depositor's identity from a field the depositor controls and then subtracted its fee from the deposit without checking whether the fee itself was negative, letting a 330-satoshi deposit mint `46,116,860,184.27388234 syBTC`; the pools it had to be sold through held only 11.26 syBTC, so the loss to liquidity providers and users came to an estimated 9.97 BTC (~$770K).

Sep 11 2026Security Insights

~$9.4M Lost: Injective, Aquifer Exploits | BlockSec Weekly

During the past week (2026/08/31 - 2026/09/06), four security incidents caused approximately $9.4M in losses across Injective, Solana, Ethereum, and Flow EVM. The largest was the Injective exploit, where an insurance fund identifier collided with a binary options market identifier and the settlement path never compared their denominations, draining about $4.8M; Aquifer on Solana lost about $2.47M because its swap path invoked an unvalidated caller-supplied Token Program, and Notional Finance V1 on Ethereum lost about $1.73M to an unchecked `uint128` cast that valued a debt at zero. Ankr FLOW on Flow EVM closed out the week with about $410K drained through a staking entry point that skipped its pause guard and minted against a stale ratio.

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