{"id":501,"date":"2024-09-24T20:40:12","date_gmt":"2024-09-24T12:40:12","guid":{"rendered":"https:\/\/hk007.net\/?p=501"},"modified":"2024-09-24T20:40:15","modified_gmt":"2024-09-24T12:40:15","slug":"%e5%8d%80%e5%a1%8a%e9%8f%88%e5%ae%89%e5%85%a8%e5%85%a5%e9%96%80%e7%ad%86%e8%a8%98%e5%85%ab-%e6%85%a2%e9%9c%a7%e7%a7%91%e6%99%ae","status":"publish","type":"post","link":"https:\/\/hk007.net\/?p=501","title":{"rendered":"\u5340\u584a\u93c8\u5b89\u5168\u5165\u9580\u7b46\u8a18(\u516b) | \u6162\u9727\u79d1\u666e"},"content":{"rendered":"\n

\u6587\u7ae0\u4f86\u6e90\uff1a\u6162\u9727\u79d1\u6280
\u7e41\u9ad4\u7ffb\u8b6f\uff1ahk007.net \u9023\u8f098\/10<\/p>\n\n\n\n

\u77ed\u5730\u5740\u653b\u64ca Short Address Attack
\u77ed\u5730\u5740\u653b\u64ca(Short Address Attack)\u662f\u91dd\u5c0d\u4ee5\u592a\u574a\u4e0a ERC20 \u667a\u6167\u5408\u7d04\u7684\u4e00\u7a2e\u653b\u64ca\u5f62\u5f0f\uff0c\u5229\u7528\u7684\u662f EVM \u4e2d\u7684\u5c0d\u65bc\u8f38\u5165\u4f4d\u5143\u7d44\u78bc\u7684\u81ea\u52d5\u88dc\u5168\u6a5f\u5236\u9032\u884c\u653b\u64ca\u3002<\/p>\n\n\n\n

\u4e00\u822c\u800c\u8a00\uff0c\u91dd\u5c0d ERC20 \u5408\u7d04\u4e2d\u7684 transfer \u51fd\u5f0f\u7684\u547c\u53eb\uff0c\u8f38\u5165\u7684\u4f4d\u5143\u7d44\u78bc\u4f4d\u6578\u90fd\u662f 136 \u4f4d\u5143\u7d44\u7684\u3002\u7576\u547c\u53eb ERC20 \u4e2d\u7684 transfer \u51fd\u5f0f\u9032\u884c ERC20 Token \u8f49\u8cec\u6642\uff0c\u5982\u679c\u653b\u64ca\u8005\u63d0\u4f9b\u7684\u5730\u5740\u5f8c\u6709\u4e00\u500b\u6216\u591a\u500b 0\uff0c\u90a3\u9ebc\u653b\u64ca\u8005\u5c31\u53ef\u4ee5\u628a\u5730\u5740\u5f8c\u7684\u96f6\u7701\u53bb\uff0c\u63d0\u4f9b\u4e00\u500b\u7f3a\u4f4d\u7684\u5730\u5740\u3002\u7576\u5c0d\u9019\u500b\u5730\u5740\u8f49\u8cec\u7684\u6642\u5019\uff0c\u6bd4\u65b9\u8aaa\u8f49\u8cec 100 \u7684 A Token\uff0c\u7136\u5f8c\u8f38\u5165\u7684\u5730\u5740\u662f\u653b\u64ca\u8005\u63d0\u4f9b\u7684\u7f3a\u4f4d\u5730\u5740\uff0c\u9019\u6642\u5019\uff0c\u7d93\u904e\u7de8\u78bc\u8f38\u5165\u7684\u8cc7\u6599\u662f 134 \u4f4d\u5143\u7d44\uff0c\u6bd4\u6b63\u5e38\u7684\u8cc7\u6599\u5c11\u4e86 2 \u4f4d\u5143\u7d44\uff0c\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0cEVM \u5c31\u6703\u5c0d\u7f3a\u5931\u7684\u4f4d\u5143\u7d44\u4f4d\u5728\u7de8\u78bc\u8cc7\u6599\u7684\u672b\u5c3e\u9032\u884c\u88dc 0 \u6e4a\u6210 136 \u4f4d\u5143\u7d44\uff0c\u9019\u6a23\u672c\u4f86\u5730\u5740\u6bb5\u7f3a\u5931\u7684 0 \u88ab\u8cc7\u6599\u6bb5\u7684 0 \u88dc\u9f4a\u4e86\uff0c\u800c\u7531\u65bc\u7d66\u5730\u5740\u6bb5\u88dc 0\uff0c\u8cc7\u6599\u6bb5\u6703\u5c11 0\uff0c\u800c\u8cc7\u6599\u6bb5\u7f3a\u5931\u7684 0 \u7531 EVM \u81ea\u52d5\u88dc\u9f4a\uff0c\u9019\u5c31\u50cf\u8cc7\u6599\u6bb5\u5411\u5730\u5740\u6bb5\u79fb\u52d5\u88dc\u9f4a\u5730\u5740\u6bb5\u7f3a\u5931\u4f4d\u5143\u7d44\u4f4d\uff0c\u7136\u5f8c\u8cc7\u6599\u6bb5\u7f3a\u5931\u7684\u4f4d\u5143\u7d44\u4f4d\u7531 EVM \u7528 0 \u88dc\u9f4a\u3002\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8f49\u8cec\u91d1\u984d\u5c31\u6703\u7531 100 \u8b8a\u6210 100 * 16 \u7684 n \u6b21\u65b9\uff0cn \u662f\u5730\u5740\u7f3a\u5931\u7684 0 \u7684\u500b\u6578\u3002\u900f\u904e\u9019\u7a2e\u65b9\u5f0f\uff0c\u653b\u64ca\u8005\u5c31\u80fd\u5c0d\u4ea4\u6613\u6240\u6216\u9322\u5305\u9032\u884c\u653b\u64ca\uff0c\u76dc\u7aca\u4ea4\u6613\u6240\u548c\u9322\u5305\u7684\u8cc7\u7522\u3002<\/p>\n\n\n\n

\u6162\u9727\u5b89\u5168\u5718\u968a\u5efa\u8b70\u4ea4\u6613\u6240\u548c\u9322\u5305\u5728\u8655\u7406\u8f49\u8cec\u7684\u6642\u5019\uff0c\u8981\u5c0d\u8f49\u8cec\u5730\u5740\u9032\u884c\u56b4\u683c\u7684\u6821\u9a57\uff0c\u9632\u6b62\u77ed\u5730\u5740\u653b\u64ca\u7684\u767c\u751f\u3002\u8a73\u60c5\u53ef\u53c3\u8003\uff1a \u907a\u5fd8\u7684\u4e9e\u7279\u862d\u8482\u65af\uff1a\u4ee5\u592a\u574a\u77ed\u5730\u5740\u653b\u64ca\u8a73\u89e3<\/p>\n\n\n\n

\u5047\u5e63\u653b\u64ca Fake Token Attack
\u5047\u5e63\u653b\u64ca(Fake Token Attack)\uff0c\u662f\u99ed\u5ba2<\/a>\u91dd\u5c0d\u90a3\u4e9b\u5728\u5efa\u7acb\u5b98\u65b9 Token \u6642\u63a1\u7528\u901a\u7528\u5efa\u7acb\u6a21\u7248\u5275\u5efa\u51fa\u4f86\u7684\u4ee3\u5e63\uff0c\u6bcf\u500b Token \u7684\u8b58\u5225\u50c5\u6839\u64da\u7279\u5b9a\u7684\u6a19\u8a18\u9032\u884c\u8b58\u5225\uff0c\u5982 EOS \u5b98\u65b9 Token \u7684\u8b58\u5225\u6a19\u8a18\u662f “eosio.token”\u5408\u7d04\uff0c\u6ce2\u5834\u7684 TRC10 \u7684\u8b58\u5225\u6a19\u8a18\u662f tokenid\uff0c\u4ee5\u592a\u574a\u7684 ERC20 \u662f\u7528\u5408\u7d04\u5730\u5740\u4f5c\u70ba\u8b58\u5225\u6a19\u8a18\u3002\u90a3\u9ebc\u9019\u6a23\u5c31\u6703\u51fa\u73fe\u4e00\u500b\u554f\u984c\uff0c\u5982\u679c\u6536\u6b3e\u65b9\u5728\u5c0d\u9019\u4e9b Token \u9032\u884c\u6536\u6b3e\u7684\u6642\u5019\u6c92\u6709\u56b4\u683c\u6821\u9a57\u9019\u4e9b Token \u7279\u6709\u7684\u6a19\u8a18\uff0c\u653b\u64ca\u5c31\u6703\u767c\u751f\uff0c\u4ee5 EOS \u70ba\u4f8b\u5b50\uff0c\u7531\u65bc EOS \u5b98\u65b9 Token \u63a1\u7528\u7684\u662f\u5408\u7d04\u4f86\u767c\u884c\u4e00\u500b\u540d\u70ba EOS \u7684 Token\uff0c\u6a19\u8a18 EOS \u672c\u8eab\u7684\u6a19\u8b58\u662f “eosio.token” \u9019\u500b\u767c\u884c\u5e33\u865f\uff0c\u5982\u679c\u5728\u63a5\u53d7\u8f49\u8cec\u7684\u6642\u5019\u6c92\u6709\u6821\u9a57\u9019\u500b\u6a19\u8b58\uff0c\u653b\u64ca\u8005\u5c31\u80fd\u7528\u5176\u4ed6\u7684\u5e33\u865f\u540c\u6a23\u767c\u884c\u4e00\u500b\u540d\u70ba EOS \u7684 Token\uff0c\u5c0d\u4ea4\u6613\u6240\u6216\u9322\u5305\u9032\u884c\u5047\u5e63\u5145\u503c\uff0c\u63db\u53d6\u771f\u7684\u4ee3\u5e63\u3002<\/p>\n\n\n\n

2019 \u5e74 4 \u6708 11 \u65e5\uff0c\u6ce2\u5834 Dapp TronBank 1 \u5c0f\u6642\u5167\u88ab\u76dc\u8d70\u7d04 1.7 \u5104\u679a BTT\uff08\u50f9\u503c\u7d04 85 \u842c\u5143\uff09\u3002\u76e3\u6e2c\u986f\u793a\uff0c\u99ed\u5ba2\u5efa\u7acb\u4e86\u540d\u70ba BTTx \u7684\u5047\u5e63\u5411\u5408\u7d04\u767c\u8d77\u201c invest \u201d\u51fd\u5f0f\uff0c\u800c\u5408\u7d04\u4e26\u6c92\u6709\u5224\u5b9a\u50b3\u9001\u8005\u7684\u4ee3\u5e63 id \u662f\u5426\u8207 BTT \u771f\u5e63\u7684 id 1002000 \u4e00\u81f4\u3002\u56e0\u6b64\u99ed\u5ba2\u62ff\u5230\u771f\u5e63 BTT \u7684\u6295\u8cc7\u56de\u5831\u548c\u63a8\u85a6\u734e\u52f5\uff0c\u4ee5\u6b64\u65b9\u5f0f\u8fc5\u901f\u638f\u7a7a\u8cc7\u91d1\u6c60\u3002\u5c0d\u6b64\uff0c\u4ea4\u6613\u6240\u548c\u9322\u5305\u5728\u8655\u7406\u8f49\u8cec\u7684\u6642\u5019\uff0c\u5207\u8a18\u8981\u56b4\u683c\u6aa2\u9a57\u5404\u7a2e\u4ee3\u5e63\u5404\u7a2e\u6a19\u8b58\uff0c\u9632\u6b62\u5047\u5e63\u653b\u64ca\u3002<\/p>\n\n\n\n

\u6574\u578b\u6ea2\u4f4d\u653b\u64ca Integer Overflow Attack
\u8cc7\u6599\u7684\u5132\u5b58\u662f\u5340\u584a\u93c8\u4e0a\u91cd\u8981\u7684\u4e00\u74b0\u3002\u4f46\u662f\u6bcf\u500b\u8cc7\u6599\u578b\u5225\u672c\u8eab\u662f\u5b58\u5728\u908a\u754c\u7684\uff0c\u4f8b\u5982\u4ee5\u592a\u574a\u4e2d uint8 \u578b\u5225\u7684\u8b8a\u6578\u5c31\u53ea\u80fd\u5132\u5b58 0\uff5e255 \u5927\u5c0f\u7684\u8cc7\u6599\uff0c\u8d85\u904e\u4e86\u5c31\u5b58\u4e0d\u4e0b\u4e86\u3002\u90a3\u9ebc\u5982\u679c\u8981\u653e\u4e00\u500b\u8d85\u904e\u8cc7\u6599\u578b\u5225\u5927\u5c0f\u7684\u6578\u5b57\u6703\u600e\u6a23\u5462\uff1f\u4f8b\u5982\u628a 256 \u5b58\u9032 uint8 \u7684\u8cc7\u6599\u578b\u5225\u4e2d\uff0c\u8cc7\u6599\u986f\u793a\u51fa\u4f86\u6703\u8b8a\u6210 1\uff0c\u800c\u4e0d\u662f\u5176\u4ed6\u6578\u503c\uff0c\u4e5f\u4e0d\u6703\u5831\u932f\uff0c\u56e0\u70ba uint8 \u672c\u8eab\u80fd\u5b58\u4e00\u500b 8 \u4f4d\u4e8c\u9032\u4f4d\u5236\u6578\u5b57\uff0c\u6700\u5927\u503c\u70ba 11111111\uff0c\u5982\u679c\u9019\u500b\u6642\u5019\u52a0 1\uff0c\u9019\u500b\u4e8c\u9032\u4f4d\u5236\u6578\u5c31\u8b8a\u6210\u4e86 100000001\uff0c\u800c\u56e0\u70ba\u8cc7\u6599\u908a\u754c\u7684\u95dc\u4fc2\uff0c\u53ea\u80fd\u62ff\u5230\u5f8c 8 \u4f4d\uff0c\u4e5f\u5c31\u662f 00000001\uff0c\u90a3\u9ebc\u6578\u5b57\u7684\u5927\u5c0f\u5c31\u8b8a\u6210 1 \u4e86\uff0c\u9019\u7a2e\u60c5\u6cc1\u6211\u5011\u7a31\u70ba\u4e0a\u6ea2\u3002\u6709\u4e0a\u5c31\u6709\u4e0b\uff0c\u4e0b\u6ea2\u7684\u610f\u601d\u5c31\u662f\u4e00\u500b\u503c\u70ba 0 \u7684 uint8 \u8cc7\u6599\uff0c\u5982\u679c\u9019\u500b\u6642\u5019\u5c0d\u5b83\u9032\u884c\u6e1b 1 \u64cd\u4f5c\uff0c\u7d50\u679c\u6703\u8b8a\u6210\u8a72\u8cc7\u6599\u578b\u5225\u6240\u80fd\u5132\u5b58\u7684\u6700\u5927\u503c\u52a0 1 \u6e1b\u53bb\u88ab\u6e1b\u6578\uff0c\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\u662f 255\uff0c\u4e5f\u5c31\u662f\u8a72\u8cc7\u6599\u578b\u5225\u6240\u80fd\u5132\u5b58\u7684\u6700\u5927\u503c\u3002\u90a3\u9ebc\u5982\u679c\u4e0a\u8ff0\u5169\u7a2e\u60c5\u6cc1\u767c\u751f\u5728\u667a\u6167\u5408\u7d04\u7576\u4e2d\u7684\u8a71\uff0c\u60e1\u610f\u4f7f\u7528\u8005\u900f\u904e\u4e0b\u6ea2\u7684\u64cd\u4f5c\uff0c\u64cd\u7e31\u81ea\u5df1\u7684\u5e33\u865f\u5411\u5176\u4ed6\u5e33\u865f\u50b3\u9001\u8d85\u904e\u81ea\u5df1\u9918\u984d\u6578\u91cf\u7684\u4ee3\u5e63\uff0c\u5982\u679c\u5408\u7d04\u5167\u6c92\u6709\u5c0d\u9918\u984d\u9032\u884c\u6aa2\u67e5\uff0c\u60e1\u610f\u4f7f\u7528\u8005\u7684\u9918\u984d\u5c31\u6703\u4e0b\u6ea2\u4f4d\u8b8a\u6210\u4e00\u500b\u8d85\u5927\u7684\u503c\uff0c\u9019\u500b\u6642\u5019\u653b\u64ca\u8005\u5982\u679c\u5927\u91cf\u62cb\u552e\u9019\u4e9b\u4ee3\u5e63\uff0c\u5c31\u80fd\u77ac\u9593\u7834\u58de\u6574\u500b\u4ee3\u5e63\u7684\u50f9\u503c\u7cfb\u7d71\u3002<\/p>\n\n\n\n

\u6162\u9727\u5b89\u5168\u5718\u968a\u5efa\u8b70\u6240\u6709\u7684\u667a\u6167\u5408\u7d04\u958b\u767c\u8005\u5728\u667a\u6167\u5408\u7d04\u4e2d\u5c0d\u8cc7\u6599\u9032\u884c\u64cd\u4f5c\u7684\u6642\u5019\uff0c\u8981\u56b4\u683c\u6821\u9a57\u8cc7\u6599\u908a\u754c\uff0c\u9632\u6b62\u6574\u5f62\u6ea2\u4f4d\u653b\u64ca\u7684\u767c\u751f\u3002\u8a73\u60c5\u53ef\u53c3\u8003\uff1aBEC \u667a\u6167\u5408\u7d04\u7121\u9650\u8f49\u5e63\u6f0f\u6d1e\u5206\u6790\u53ca\u9810\u8b66\u3002<\/p>\n\n\n\n

\u689d\u4ef6\u7af6\u722d\u653b\u64ca Race Condition
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