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X-exploreAddress Poisoning Attack, A continuing Threat
This article is jointly published by X-explore and WuBlockchain.Abstract:The address poisoning attack on $0 USD transfers is savage in recent weeks. As of December 2, more than 340K addresses have been poisoned on the chain, totaling 99 victim addresses and more than 1.64M USD stolen. In this article, X-explore provides a comprehensive analysis of the attack landscape, traces the attackers on-chain, and also provides an in-depth analysis of how the attack is implemented. We would like to appe...
X-exploreAdvanced Analysis For Arbitrum Airdrop
This article is jointly published by X-explore and WuBlockchain.OverviewThe long-awaited Arbitrum has finally released its airdrop news. Along with the airdrop news, they also released their rules for checking Sybil addresses.https://github.com/ArbitrumFoundation/sybil-detectionAccording to the rule described, we can infer that the project team:Excluded cross-chain bridges, centralized exchanges, and smart contracts while detecting SybilA relatively tolerant detection was adopted for small-sc...
X-exploreHNT fake recharge traceability - $40 Million defrauded
A number of group attacking activities have been found in the Binance accident of HNT misallocation, due to its system vulnerability, occurred a few days ago. This article will trace and analyze the attacking group with the largest amount, hoping the analysis will give all exchanges some insights to improve their resilience in regards to the underlying risk. Furthermore, this article will also expose the details of actual attackers, whose miner nodes are still working, so that anyone of inter...
>300 subscribers
X-exploreAddress Poisoning Attack, A continuing Threat
This article is jointly published by X-explore and WuBlockchain.Abstract:The address poisoning attack on $0 USD transfers is savage in recent weeks. As of December 2, more than 340K addresses have been poisoned on the chain, totaling 99 victim addresses and more than 1.64M USD stolen. In this article, X-explore provides a comprehensive analysis of the attack landscape, traces the attackers on-chain, and also provides an in-depth analysis of how the attack is implemented. We would like to appe...
X-exploreAdvanced Analysis For Arbitrum Airdrop
This article is jointly published by X-explore and WuBlockchain.OverviewThe long-awaited Arbitrum has finally released its airdrop news. Along with the airdrop news, they also released their rules for checking Sybil addresses.https://github.com/ArbitrumFoundation/sybil-detectionAccording to the rule described, we can infer that the project team:Excluded cross-chain bridges, centralized exchanges, and smart contracts while detecting SybilA relatively tolerant detection was adopted for small-sc...
X-exploreHNT fake recharge traceability - $40 Million defrauded
A number of group attacking activities have been found in the Binance accident of HNT misallocation, due to its system vulnerability, occurred a few days ago. This article will trace and analyze the attacking group with the largest amount, hoping the analysis will give all exchanges some insights to improve their resilience in regards to the underlying risk. Furthermore, this article will also expose the details of actual attackers, whose miner nodes are still working, so that anyone of inter...
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我们知道最近有个火爆的token，叫做XEN，只需要付出gas费就能铸造大量代币，那有没有办法让别人替我们支付gas费呢，最近就有一个黑客正在让 FTX 帮他付钱。
10月10日，攻击者0x1d371CF00038421d6e57CFc31EEff7A09d4B8760在链上部署了攻击合约（如：0xCba9b1Fd69626932c704DAc4CB58c29244A47FD3）
FTX交易所出金热钱包地址（0xC098B2a3Aa256D2140208C3de6543aAEf5cd3A94）向攻击合约连续进行0.0035ETH左右的小额ETH转账，如下图所示：
进一步查看交易详情，每次交易攻击合约均创建了1～3个子合约，这些子合约先进行XEN Token的Mint或Claim。最终这些合约会自我销毁。这些操作都由 FTX 热钱包地址支付 gas 费。
截止目前，FTX交易所因为GAS窃取漏洞共损失了81+ ETH，黑客地址已获得超过1亿个XEN Token，并通过DoDo，Uniswap等去中心化交易所将部分XEN代币换成61个ETH，并入金到FTX以及Binance交易所。
我们对该攻击进行了链上监控，目前仅感知到FTX交易所面临此类攻击。然而针对FTX的GAS窃取攻击仍在进行中。以下为攻击者部署的合约地址：
0xcba9b1fd69626932c704dac4cb58c29244a47fd3
0x6a6474d79536c347d6df1e5f1ce9be12613a13c6
0x51125a7d015eddc3dbef138a39ba091863d1f155
0x6438162e69037c452e8af5d6ae70db1515324a3d
0xb69d4de5991fa3ded39c27ed88934a106f0af19e
0x8b2550add3c5067ca7c03b84e1e37b14b35aa1e5
0x2e1891de1e334407fafaab09ac545bb9e4099833
0xebe5cccc75b4ec5d6d8c7a3a8cee0d8c0e821584
0xcf0da9cea8403ff1e3ed6db93f3badc885c24522
0x524db09476bb87b581e1c95fbf37383661d1829a
0x1afd71464dd7485f8b3cea7c658c6a1e2b3e77a4
0xfc3ee819f873050f7f3bbce8b34ba9df4c44b5d0
0xb6bdf9eb331d0109dd3ba1018f119c59341fbb40
0x8e2b77c3c8d6e908aea789864e36a07bea1aaf58
0x46666a93b1f83b4c475b870dc67dc0dbd8a16607
0x15e5bf7f142ffa6f5eb7e1a30725603c97c2d0d6
0x6845eebc315109a770dcc7a43ed347405a82e94b
FTX 钱包安全：既没有对接收方地址为合约地址进行任何限制。也没有对ETH原生Token的转账GAS Limit 进行限制，而是采用 estimateGas 方法评估手续费，这种方法导致GAS LIMIT大部分为500,000，超出默认21,000值的24倍。
FTX 出金安全：从FTX出金热钱包地址的出金中存在大量相同出金地址的小额转账。为明显出金异常事件。
FTX业务安全：FTX提币免手续费，给攻击者零成本窃取带来极大便利。
敬请关注我们。
Mirror: https://mirror.xyz/x-explore.eth
Twitter: https://twitter.com/x_explore_eth
我们知道最近有个火爆的token，叫做XEN，只需要付出gas费就能铸造大量代币，那有没有办法让别人替我们支付gas费呢，最近就有一个黑客正在让 FTX 帮他付钱。
10月10日，攻击者0x1d371CF00038421d6e57CFc31EEff7A09d4B8760在链上部署了攻击合约（如：0xCba9b1Fd69626932c704DAc4CB58c29244A47FD3）
FTX交易所出金热钱包地址（0xC098B2a3Aa256D2140208C3de6543aAEf5cd3A94）向攻击合约连续进行0.0035ETH左右的小额ETH转账，如下图所示：
进一步查看交易详情，每次交易攻击合约均创建了1～3个子合约，这些子合约先进行XEN Token的Mint或Claim。最终这些合约会自我销毁。这些操作都由 FTX 热钱包地址支付 gas 费。
截止目前，FTX交易所因为GAS窃取漏洞共损失了81+ ETH，黑客地址已获得超过1亿个XEN Token，并通过DoDo，Uniswap等去中心化交易所将部分XEN代币换成61个ETH，并入金到FTX以及Binance交易所。
我们对该攻击进行了链上监控，目前仅感知到FTX交易所面临此类攻击。然而针对FTX的GAS窃取攻击仍在进行中。以下为攻击者部署的合约地址：
0xcba9b1fd69626932c704dac4cb58c29244a47fd3
0x6a6474d79536c347d6df1e5f1ce9be12613a13c6
0x51125a7d015eddc3dbef138a39ba091863d1f155
0x6438162e69037c452e8af5d6ae70db1515324a3d
0xb69d4de5991fa3ded39c27ed88934a106f0af19e
0x8b2550add3c5067ca7c03b84e1e37b14b35aa1e5
0x2e1891de1e334407fafaab09ac545bb9e4099833
0xebe5cccc75b4ec5d6d8c7a3a8cee0d8c0e821584
0xcf0da9cea8403ff1e3ed6db93f3badc885c24522
0x524db09476bb87b581e1c95fbf37383661d1829a
0x1afd71464dd7485f8b3cea7c658c6a1e2b3e77a4
0xfc3ee819f873050f7f3bbce8b34ba9df4c44b5d0
0xb6bdf9eb331d0109dd3ba1018f119c59341fbb40
0x8e2b77c3c8d6e908aea789864e36a07bea1aaf58
0x46666a93b1f83b4c475b870dc67dc0dbd8a16607
0x15e5bf7f142ffa6f5eb7e1a30725603c97c2d0d6
0x6845eebc315109a770dcc7a43ed347405a82e94b
FTX 钱包安全：既没有对接收方地址为合约地址进行任何限制。也没有对ETH原生Token的转账GAS Limit 进行限制，而是采用 estimateGas 方法评估手续费，这种方法导致GAS LIMIT大部分为500,000，超出默认21,000值的24倍。
FTX 出金安全：从FTX出金热钱包地址的出金中存在大量相同出金地址的小额转账。为明显出金异常事件。
FTX业务安全：FTX提币免手续费，给攻击者零成本窃取带来极大便利。
敬请关注我们。
Mirror: https://mirror.xyz/x-explore.eth
Twitter: https://twitter.com/x_explore_eth
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