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android_app_security_crack's Introduction

安卓应用的安全和破解

  • 最新版本:v4.0.1
  • 更新时间:20230914

简介

总结安卓应用的正向安装和逆向破解;先是安卓正向和逆向的概述;然后是安卓背景知识介绍,包括安卓基本框架、apk编译打包流程、以及相关知识,包括apk文件、dex文件、安卓虚拟机的Dalvik和ART,以及Smali。接着介绍安装正向的加固手段发展历史,包括VMP;以及防静态分析,包括加壳加固,为何要加壳,以及常见的加固服务提供商,和代码混淆的ProGuard和Obfuscator-LLVM,以及防动态调试。然后是安卓逆向破解,以及系列子教程。

源码+浏览+下载

本书的各种源码、在线浏览地址、多种格式文件下载如下:

HonKit源码

如何使用此HonKit源码去生成发布为电子书

详见:crifan/honkit_template: demo how to use crifan honkit template and demo

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版权和用途说明

此电子书教程的全部内容,如无特别说明,均为本人原创。其中部分内容参考自网络,均已备注了出处。如发现有侵权,请通过邮箱联系我 admin 艾特 crifan.com,我会尽快删除。谢谢合作。

各种技术类教程,仅作为学习和研究使用。请勿用于任何非法用途。如有非法用途,均与本人无关。

鸣谢

感谢我的老婆陈雪的包容理解和悉心照料,才使得我crifan有更多精力去专注技术专研和整理归纳出这些电子书和技术教程,特此鸣谢。

其他

作者的其他电子书

本人crifan还写了其他150+本电子书教程,感兴趣可移步至:

crifan/crifan_ebook_readme: Crifan的电子书的使用说明

关于作者

关于作者更多介绍,详见:

关于CrifanLi李茂 – 在路上

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android_app_security_crack's Issues

android_app_security_crack里的1.6.3.1章节中的getMD5Str的char的list转换效果这段有段代码不明白

public static final String getMD5Str(String str) {
    char[] cArr = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
    try {
        byte[] bytes = str.getBytes();
        MessageDigest instance = MessageDigest.getInstance("MD5");
        instance.update(bytes);
        char[] cArr2 = new char[(r1 * 2)];
        int i = 0;
        for (byte b : instance.digest()) {
            int i2 = i + 1;
            cArr2[i] = cArr[(b >> 4) & 15];
            i = i2 + 1;
            cArr2[i2] = cArr[b & 15];
        }
        return new String(cArr2);
    } catch (Exception unused) {
        return null;
    }
}

请问,这段代码里char[] cArr2 = new char[(r1 * 2)];的r1代表什么,谢谢

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