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[原创]Android oat文件格式分析笔记
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发表于: 2015-12-2 18:07
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最近分析了Android中的oat文件格式，基于android5.1.1、32位，附件中的笔记有分析的详细过程。由于水平有限，难免有不足之处，还望各位大大指点一二。
为了加深理解，还写了个从oat文件中提取dex的小程序，首先解析了elf外壳，然后解析oatdata段，从中提取dex，支持oat文件中包含多个dex的情况。源码链接：76eK9s2c8@1M7s2y4Q4x3@1q4Q4x3V1k6Q4x3V1k6Y4K9i4c8Z5N6h3u0Q4x3X3g2U0L8$3#2Q4x3V1k6y4j5h3&6&6c8X3q4U0k6g2)9J5c8V1g2^5N6s2u0S2j5%4c8p5k6i4S2r3M7X3!0E0e0$3q4@1i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1@1i4@1u0n7i4@1p5K6i4@1f1%4i4@1p5H3i4K6R3I4i4@1f1$3i4K6W2o6i4K6R3&6i4@1f1%4i4K6R3J5i4@1t1&6i4@1f1$3i4K6R3^5i4@1t1K6
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把dex提取后，和相应apk中的dex对比，发现有2个字不一样。。。难道oat中的dex不是原始的dex？还希望大神解答啊！
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d6aK9s2c8@1M7s2y4Q4x3@1q4Q4x3V1k6Q4x3V1k6Y4K9i4c8Z5N6h3u0Q4x3X3g2U0L8$3#2Q4x3V1k6y4j5h3&6&6c8X3q4U0k6g2)9J5c8V1g2^5N6s2u0S2j5%4c8p5k6i4S2r3M7X3!0E0e0$3q4@1 增加了修复输出dex校验和的功能
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 感谢分享 图解很详细 顺便问一下那个文件结构图是用什么工具画的
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Visio画的，但是感觉Visio还是不够好用啊
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好久没看了
 。貌似如果是QuickCode，size 就存在code前面，调用OatMethod::GetQuickCodeSize()就行，相关代码：e86K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8X3q4F1k6s2u0G2K9h3c8^5M7X3g2X3i4K6u0W2j5$3!0E0i4K6u0r3y4g2)9J5k6e0q4Q4x3X3f1I4i4K6g2X3M7U0k6Q4x3V1k6^5M7X3g2X3i4K6u0r3j5i4u0@1i4K6u0r3M7Y4g2F1N6r3W2E0k6g2)9J5c8X3!0S2N6q4)9#2k6X3k6A6L8r3g2Q4x3X3g2Z5 2b3K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8X3q4F1k6s2u0G2K9h3c8^5M7X3g2X3i4K6u0W2j5$3!0E0i4K6u0r3y4g2)9J5k6e0q4Q4x3X3f1I4i4K6g2X3M7U0k6Q4x3V1k6^5M7X3g2X3i4K6u0r3j5i4u0@1i4K6u0r3M7Y4g2F1N6r3W2E0k6g2)9J5c8X3!0S2N6q4)9#2k6X3k6A6L8r3g2Q4x3X3c8A6L8X3I4Q4x3X3g2Z5 |
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