I’ve spent some time trying to use Proxmark3 via an Android phone. The information in the Internet were a little disordered or maybe out of date. Therefore, I write the steps down in here.
Environment:
Windows-7 64bits (because the Nexus Root Toolkit can only run on Windows) Nexus 7 (Android 4.2.1)
Equipment:
OTG line (micro USB slave – USB master) USB hub (only support USB2.0 interface)
Apps (from Google Play):
Root Checker (Optional) Android Terminal Emulator
1. enable Developer Mode
- Go to setting page => About tablet => click Build number 7 times => then the Developer options is available.
- Go to Developer options => enable USB debugging
- Note that your PC will install drivers for your device automatically.
2. Unlock and root the android device:
Download Nexus Root Toolkit (I was using NRT_v1.6.3.sfx.exe , maybe others will work, too)
Install and open it, follow the guide and the toolkit will help you to root your device.
2.5 Nexus Root Toolkit:
- Click: Full Drivers Installation Guide.
- Launch Device Manager => uninstall Nexus7 driver
- Unplug device => Launch USBView => uninstall all Android ADB Interface and all drivers comes from Google Inc.
- Plug device back, it will install the drivers you need automatically.
- Go to step 3 (we can skip step 2 if drivers are OK) => full driver test
- I’ll retry it about 5 times to pass the test. (press OK when the warning comes up)
- NOTE: I use the USB hub and the transfer line for android, so that it will be forced to use USB2.0 interface.
- NOTE: Reboot device if it is in the bootloader mode.
- Click Unlock.
- After you see the device is in the recovery mode, click the POWER key to choose YES.
- NOTE: It will wipe all data, so you need to enable developer mode again.
- Click Root:
- If it halt at “Waiting for your device to finish booting backup… “ with a long time, click POWER button to reboot the device. But it will fail after all process done, You need root again.
- Retry it again and again, it will finish successfully.
- NOTE: DO NOT disconnect the device when the toolkit is rooting your phone.
- NOTE: Download “root checker” from Google Play to confirm you root it successful.
3. Build proxmark3’s library
- Follow this guide :
- Or you can download the libraries and executable file here: libreadline, libtermcap, libusb, proxmark3
- Put them into the SD card of your device.
- Open Terminal Emulator app:
- Follow this guide to remount the
/system - In my case, I typed:
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su
mount
mount –o remount /dev/block/platform/sdhci-tegra.3/by-name/APP /system
cd system
chmod 777 lib
chmod 777 bin
dd if=/sdcard/libusb.so of=/system/lib/libusb.so
dd if=/sdcard/libreadline.so of=/system/lib/libreadline.so
dd if=/sdcard/libtermcap.so of=/system/lib/libtermcap.so
dd if=/sdcard/proxmark3 of=/system/bin/proxmark3
4. Connect proxmark3 and android phone:
- Phone – OTG line – USB hub – proxmark3
- Enter proxmark3 in the terminal.
- Then it works!!