NKirnbauer: links that doesnt exist

2024-09-25T09:01:42Z

links that doesnt exist

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	== Tested Devices ==		== Tested Devices ==
	* [[Samsung S9, Exynos M3, Android 9]]		* Samsung S9, Exynos M3, Android 9
	* [[Samsung Tab S3, Snapdragon 820, Android 9]]		* Samsung Tab S3, Snapdragon 820, Android 9
	* [[Xiaomi Mi Mix 3, Snapdragon 845, Android 9]]		* Xiaomi Mi Mix 3, Snapdragon 845, Android 9

	== Courses ==		== Courses ==

JPDoe: Added "Accessed" to references

2020-04-11T19:06:34Z

Added "Accessed" to references

← Older revision		Revision as of 19:06, 11 April 2020
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	== References ==		== References ==
	* Based on the official installation notes by (Internal-Error) and (GalaxyMaster)		* Based on the official installation notes by (Internal-Error) and (GalaxyMaster)
	* https://openwall.info/wiki/john/custom-builds#Compiled-for-Android		* https://openwall.info/wiki/john/custom-builds#Compiled-for-Android (Accessed 11. April 2020)
	* https://termux.com/		* https://termux.com/ (Accessed 11. April 2020)

	[[Category:Documentation]]		[[Category:Documentation]]

JPDoe: Created page with "

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2020-04-11T18:11:21Z

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<div style="font-weight: normal;line-height:1.6;">ⓘ Table of Contents</div>
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== Summary ==
This article briefly describes how you can use the unused processing power of your Android phone to crack passwords using John the Ripper (JtR).

== Requirements ==
* Android Phone ([https://openwall.info/wiki/john/custom-builds%23Compiled-for-Android Custom builds])
* Enable USB-Debugging in the Android Developer options
* Host with Android Debug Bridge (ADB) installed ([https://www.xda-developers.com/install-adb-windows-macos-linux/ Guide])
* Optionally: Terminal Emulator installed on Android (e.g. [https://termux.com/ Termux])

== Procedure ==
Unlike hashcat, JtR is very flexible and can be installed on almost any platform. It is also very easy to get John the Ripper to run on Android. Generic builds for ARM, x86 and MIPS processor architectures can be found on the [https://openwall.info/wiki/john/custom-builds%23Compiled-for-Android Openwall wiki]. A rooted device is not needed but a place in the filesystem with write permission. This is in most cases: /data/local, /data/tmp or /data/local/tmp/. Note that those folders are cleared after a restart. Termux terminal emulation tool with its built-in package manager pkg and apt may be used to download and install John, but this works rather badly in some scenario.

<div style="border: 1px solid #31708f; background-color: #d9edf7; color: #31708f; padding: 5px 10px; margin-bottom: 5px; text-align: justify"><b>Note</b>: USB-Debugging must be enabled on the Android device!</div>

[https://openwall.info/wiki/john/custom-builds#Compiled-for-Android Download] and extract the John the Ripper Android binaries from the host device. Then open the binaries folder in a terminal window on the host device.

* Start ADB Deamon
<b>Host$</b> adb devices
<span style="color: grey"> List of devices attached
1c5c667023047ece device</span>

* Get Android device CPU architecture
<b>Host$</b> adb shell getprop ro.product.cpu.abi
<span style="color: grey"> arm64-v8a</span>

* Copy files to a writable space on the Android device
<b>Host$</b> adb push $JOHN_ANDROID/user/. /data/local/tmp
<span style="color: grey"> user/./: 8 files pushed. 19.1 MB/s (7436597 bytes in 0.370s)</span>
<b>Host$</b> adb push $JOHN_ANDROID/libs/$ARCHITECTURE/john /data/local/tmp
<span style="color: grey"> libs/arm64-v8a/john: 1 file pushed. 12.5 MB/s (236032 bytes in 0.018s)</span>

<div style="background-color: #fcf8e3; border: 1px solid #8a6d3b; color: #8a6d3b; padding: 5px 10px; margin-bottom: 5px"><b>Important</b>: Continue with the appropriate section, depending on whether the Android device is rooted or not.</div>

=== Rooted Android ===

<div style="border: 1px solid #31708f; background-color: #d9edf7; color: #31708f; padding: 5px 10px; margin-bottom: 5px; text-align: justify"><b>Note</b>: Since Android mounts /mnt/sdcard with the 'noexec' mount option the included binary is more usable on so-called "rooted" systems.</div>

* On your Android device launch some terminal application and become root (by executing <code>su</code>);
* Remount /system read-write:
<b>Android$</b> mount -o remount,rw /system

* Copy 'john' from the supplied 'libs' directory (based on your cpu-arch) to /system/xbin/:
<b>Android$</b> cp /data/local/tmp/libs/$ARCHITECTURE/john /system/xbin/

* Fix the permissions and remount /system to be read-only
<b>Android$</b> chmod 0755 /system/xbin/john
<b>Android$</b> mount -o remount,ro /system

* Drop root's privileges by exiting the shell.
* Benchmark to test the 'installation'
<b>Android$</b> john --test

=== Non-Rooted Android ===

* Start an android shell
<b>Host$</b> adb shell

<div style="border: 1px solid #31708f; background-color: #d9edf7; color: #31708f; padding: 5px 10px; margin-bottom: 5px; text-align: justify"><b>Note</b>: Alternatively a terminal emulator like Termux can be used.</div>

* Done. Change permissions and run.
<b>Android$</b> cd /data/local/tmp
<b>Android$</b> chmod +x ./* && ./john

* Benchmark to test the 'installation'
<b>Android$</b> ./john --test

== Tested Devices ==
* [[Samsung S9, Exynos M3, Android 9]]
* [[Samsung Tab S3, Snapdragon 820, Android 9]]
* [[Xiaomi Mi Mix 3, Snapdragon 845, Android 9]]

== Courses ==
* Seminar Paper: [[:File: Password_Cracking-Software_and_Hardware_Comparison-ITTK20-WS19.pdf|Password Cracking: Software and Hardware Comparison]]

== References ==
* Based on the official installation notes by (Internal-Error) and (GalaxyMaster)
* https://openwall.info/wiki/john/custom-builds#Compiled-for-Android
* https://termux.com/

[[Category:Documentation]]

Password cracking on Android - Revision history

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