文件名称:Bypass-for-Screen-Lock-of-Android
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:随着移动通信技术的迅速发展和广泛应用,手机内部包含的信息已经成为犯罪侦查重要的线索和证据来
源。由于人们对数据安全和隐私保护意识的提高,以及涉案嫌疑人的反侦查意识的增强,涉案的智能手机通常
带有锁屏密码,在这种情况下,如何对其中的数据进行提取、处理和分析成为一个重要的研究方向。本文主要
针对Android 手机的锁屏问题进行研究,详细介绍了Android 智能手机三种锁屏密码,即手势密码、PIN 码密
码以及复杂密码的文件结构和存储原理,分析了如何借助Android 的ADB(Android debug bridge)调试模式方
法来对Android 智能手机进行手动的密码绕过或清除,针对Android 手机在调试模式打开和未打开的情况下提
出了不同的解决方法用于对手机进行密码破解和清除,这些方法在笔者实践中证明具有较高的实用性。-It is quite common to come across a locked mobile phone in case investigations. How to bypass the screen’s
lock presents a challenge towards digital forensic investigators. This article focused on bypassing the locked screen of Android
smart phones. Three different types of Android passcodes, gesture, PIN code and complex, were introduced along with
their storage principle and file structures. To make the brute forcer successfully get the pattern code depended on acquiring
the passcode key file. Bypassing the screen lock could be achieved by using ADB (Android debug bridge). Two different
approaches to solve the problems on getting passcode were suggested with the conditions of mobile phone’s USB debugging
mode at on or off. When USB debugging mode was on, investigators could try to gain root access into the phone and apply
adaptable method to decrypt or remove the screen lock. But if the USB debugging mode was off, the custom recovery
method could be used to flash on the phone
源。由于人们对数据安全和隐私保护意识的提高,以及涉案嫌疑人的反侦查意识的增强,涉案的智能手机通常
带有锁屏密码,在这种情况下,如何对其中的数据进行提取、处理和分析成为一个重要的研究方向。本文主要
针对Android 手机的锁屏问题进行研究,详细介绍了Android 智能手机三种锁屏密码,即手势密码、PIN 码密
码以及复杂密码的文件结构和存储原理,分析了如何借助Android 的ADB(Android debug bridge)调试模式方
法来对Android 智能手机进行手动的密码绕过或清除,针对Android 手机在调试模式打开和未打开的情况下提
出了不同的解决方法用于对手机进行密码破解和清除,这些方法在笔者实践中证明具有较高的实用性。-It is quite common to come across a locked mobile phone in case investigations. How to bypass the screen’s
lock presents a challenge towards digital forensic investigators. This article focused on bypassing the locked screen of Android
smart phones. Three different types of Android passcodes, gesture, PIN code and complex, were introduced along with
their storage principle and file structures. To make the brute forcer successfully get the pattern code depended on acquiring
the passcode key file. Bypassing the screen lock could be achieved by using ADB (Android debug bridge). Two different
approaches to solve the problems on getting passcode were suggested with the conditions of mobile phone’s USB debugging
mode at on or off. When USB debugging mode was on, investigators could try to gain root access into the phone and apply
adaptable method to decrypt or remove the screen lock. But if the USB debugging mode was off, the custom recovery
method could be used to flash on the phone
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Bypass for Screen Lock of Android.pdf
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