decrypt Boox Update Upx

Have been tested only in these Boox ereaders. If you found it available for any other Boox ereader, please submit the strings.

Note 1: There is also another method to fetch decrypted update.zip from @shunf4.

Note 2: There is a way to get downloading url of latest firmware.

Note 3: payload.bin can be extracted with https://github.com/cyxx/extract_android_ota_payload.

Any other issue and pull request is also welcomed!

The detail of algorithm (Simplified Chinese)

How to run?

Python3 should be installed to run the script, and pycryptodome a dependency of the script should also be installed:

(BTW: in some environments, the following pip and python should be replaced with pip3 and python3)

pip install pycryptodome

You can run the application by putting update.upx file in the project directory and running

python DeBooxUpx.py <device model> [input file name [output file name]]

<device model> is required, and [input file name [output file name]] is optional. The input file will be update.upx and the output file will be saved in the current working directory, if not set in the arguments.

For list of currently supported models please refer to the table.

API

There is a python class DeBooxUpx in DeBooxUpx.py to decrypt update.upx, and dict boox_strings where there are known strings.

Following is a example to use this class to decrypt the update.upx of Boox Nove Pro:

from DeBooxUpx import DeBooxUpx, boox_strings
model = 'NovaPro'
updateUpxPath = 'update.upx'
decryptedPath = 'update.zip'

decrypter = DeBooxUpx(**boox_strings[model])
print('When updating, the device decrypt update package into', decrypter.path)
decrypter.deUpx(updateUpxPath, decryptedPath)

Or for manually setting strings:

from DeBooxUpx import DeBooxUpx

MODEL = "NovaPro" 
STRING_SETTINGS = "j857wYAQcWZgvIEQ/tcQqzxreUJgFHwJl6D2TN9BuSkQ" 
STRING_UPGRADE = "+soGw/YVdGIRJiAs5SMmv1ihW37H1Fa9+/1w2Vgt14Ag" 
STRING_LOCAL = "lpsj9NJ8Kzv8jHb+OO8A5lxC+9Zhl243bFmDZYaF" 
updateUpxPath = 'update.upx'
decryptedPath = 'update.zip'

decrypter = DeBooxUpx(MODEL, STRING_SETTINGS, STRING_UPGRADE, STRING_LOCAL)
print('When updating, the device decrypt update package into', decrypter.path)
decrypter.deUpx(updateUpxPath, decryptedPath)

The strings

	MODEL	STRING_SETTINGS	STRING_UPGRADE	STRING_LOCAL
Gulliver-ru	MC_GULLIVER	wDNy4yMayA4nnQfzAYYqV3ih6uu363MoyfhaX9MtbCQk	xzUDklMaz39aPNJAl45ca7c3hOrBQlNYZh+iZdK64fIo	3xRR0nR2lFLKpw5g71X5JGqc0/hZQhmJM9idyx1b
KonTiki2-ru	Kon_Tiki2	eqxOVE1h8e8hbGNiV2ZHed6hMpcOH3vULx6XMm/WguZ1	dKA6Ik0R95nDwjGR/dfPwxkYYNBkfngJk51A2MlRxBsq	bPBuYxkL37AYgKbD6nRxEL6EaFCFzFgPij53pTwH
Leaf	Leaf	kh5V130fLNcO5lgsSDq7aUxQOz98DzEmiur3YsYKreIs	kBtW135kW9zvvgRlsTolCktkJ7+MeW5ZoNgr3xyr2SpX	jzx1lloJdIBGjmcyS9oYPmXvTKFp4dpj66fPcaON
Max2	Max2	vtIkV3LyRAzlnqbIHX3PFsRUI4iP6AgBDlYmkw8OtkZQ	uqhRVHL0SwBFPHF8wgyzGaR9XhIlkW/1ab0p7UjuDCjo	pvRyElGZH1rWeTUPJ8K3uV2MqyYmjpYYTW2y1Grc
Max3	Max3	1wdvUHZmcz32N1pgG4fkHmDsTDVihMJsPCNV4mW/6u1k	3nxuLgdpBE3B3n1Yyymt4cOS8dNucfQxK8YOsmcemuyO	yCA9YlFxLBdLbDUl3vwzPkn9vtYuVFZCfhrOTvR1
MaxLumi	MaxLumi	mTZFN0K+oMcGnn2n7+zV5DH7kr/Hbes2x/wKDJp6K7Kq	mj0zR0Oy3L4R+6y49MIEQT9bdx9AVz8TWyG9q3N+d9VY	hWAUdhOp9ekIYxIW+LpVj6OviWBbCbRa1c7s1jtW
MaxLumi2	MaxLumi2	zR5/dfK/2XhmwhA9AIGr+gx6Vzho5sbklSTjLAgnC8/C	zh98dPzN0QdwbRem1Yfx28DFxU+Gkvg4MpLDIp0GorRU
Note	Note	0WZeSahj4BlwNAJJkcSJEdktwbc2xdYhN+pEl+7XwuJv	oRJROqUQ4xgcx7zvmLyPLeysH+cCU39EGXg77NZar8AP	z0YIfPx+vETibLDToPlDQPl54yE55JUFayfkx1+G
Note2	Note2	etwiPPEXAQRj3m+e0Q2FOxT16aJ8XexQAqhGn5NqZWv1	et0jSPpmd3ueGHLmMf+2yyXVn18sa2HrDg56dCTFH6lf	YY9wfqN7K1LlSug47Tr5Y8QkDHmmJ4VDCJ58mhoV
Note3	Note3	uTiMM5JgTXOCZAZKMcZIzc1yQpfX1+jxTFOred3te4z9	zEf3SZ8TOADA8QuwOHicGLrrc4EA7sffKfc01TlUfe/q	pmXVBMt5EllxXhD9L6/NWH/pTZXRURP6QLsrNlx6
NoteAir	NoteAir	U04vqHYo0LFoJQAvP3Rs1aBxySs7z4T1B+asamimEoAf	VD1ZqgIl08305CVeftRI7qGBtq9bCMrJ3a1VkpkzjOu2	PW8K6VI//Zt6iqjYQWN0LIwRTVYyDHJvHNEXFwWV
NoteAir2	NoteAir2	iCTAyj86sQAvF/XUuLBO2dS4AWZVJsy+pPmvR9wkKqhe	iCbPzTBHtXSRc3HdNnswRPX6Vp222OGR/rgGb3ZYtKIM
NoteAir2P	NoteAir2P	9dRjKa5Bv6SumZaiR6B5Bmxgu/JuRoSCdqVEX1P8itHp	9aBiXK02yte/JCfSq1/AtQg74phmxvZv1dGaRVsM646e
NotePro	NotePro	MjR72bOazBUacJwDcuWgtm/E0A9F9ahIt1buweEPA020	RjV8r7+fx2Wjp6rUSrBOpmqYnHKs7eReqTTcy9k4c3tn	W2co6eaDmEl7jIjOSqr11C71RDHHiV3p5oG2G54X
NoteS	NoteS	+YKimeg208RzM8InqtuUjSIopyM2OLIMpFeeTQby2Au4	+vap6p4w0MaT5A8RB4+ru3gnFtIq2g4K+tcjQjy3N599	5qT7388vj+/FwLMX/cIXSCgSxSIg9SAf0tB4NcEI
NoteX	NoteX	xhffOONo9wDGZquv93yJoLm0z6igW+XL17PUyfR8ky4l	zBGvTe9t8HZQXu2Q85Dl0iI9R9tEg2VRw/8cEYXauU3o
Note_YDT	Note_YDT	Utaad8dgPmSgBOjFknI0PQAp/Sc+v71Hml0ldJIzecDx	ItvgBbJhOxaKjMyiE/yDufmOWwHvTPNfxdOJ2XQTHXaO	PIe5RuMNYz8G5FmaqRUu2qHI0br1Is3too/sLts/
Nova	Nova	L0uopm+jYaWWf/0e/POLt0kkBuS3H+5axpS6cqUpn4ft	XE6jpB3WZ9J5xQdh6GFchFbeBMALt6Zx/UIg8jaiaI72	Rh/6kzjOT4nJCsXC5JMEkcbPzzBmNkB8i/c6ZNun
Nova2	Nova2	lxXh4Vv6aqYecCAFc/hsn4mnXNbI6H4S3bZFW5Jh8NHj	lBabky+FbaOtZ7luDK+7BlApiYcGEi8PndwIc5WaemXQ	iDDDo3jsN4hhLA3tQhaIkM4XLcxZT4czBMM7ExnK
Nova3	Nova3	VUkFew9KjsE54uQMSZI+S2tT1RRckT/vKkfiFFqImxi7	VEsMcHw88MpwOByhT7zqNhRFTQcruVMqhdllIlY6T+6f	TGlcNi8npJe4EHxzOKbCXakJKDssoRldHueY5OGl
Nova3Color	Nova3Color	5VJqMbDB52k04k29Wc4itQBtLTRDq5kEdQaQ+GZ324PC	ky0eR7CymhuAUrRBaeii5tq/ezcnXMQkT+WV1OrmRqQa	/Q89A5Xbsza/FBiIu8LUV5bIiLf9kXDjAdJPjyz+
NovaAir	NovaAir	6NTlwbVEYP1BPTdQE25u6TCpoCg988I/Cjcs0Wxrwa4O	66aRwLgxGv1vNmOsbVWp37OBy4RugvpZvUom3VQxWGrM	9YDFh+EuTqFECXRvmEbL78mtW69CQRENjADM8A+L
NovaAirC	NovaAirC	ycihhTCxjfQO85KdVPvpA1ZzCPr3eJ/KhcKEKlqMhEfR	zsnQgzXEhvsfL4pk48rtEckIPyDedhybURHP198tag+Z
NovaPlus	NovaPlus	MtoBkApRAVwzdGe2CTnaE4MIgevRYNQfaKo606tyUQNY	Nttwkwxaei8xorBu/uUBpUu8nNZHTRIAZMZc0xrJs9Ti	LIYj1F9NVXFrOfi24/C76gFFxHYSCJ4mfhYI4q5w
NovaPro	NovaPro	j857wYAQcWZgvIEQ/tcQqzxreUJgFHwJl6D2TN9BuSkQ	+soGw/YVdGIRJiAs5SMmv1ihW37H1Fa9+/1w2Vgt14Ag	lpsj9NJ8Kzv8jHb+OO8A5lxC+9Zhl243bFmDZYaF
PadMu3	PadMuAP3	TCP3lGFLuxm7wOXWnaomQAdYikpFPAOj5U2LK0Dck3Un	PC3wkRM4zhgstNIQLGR+dW9jourXdEXZXU/mN7bTACu0	In/UoUFVkUdHTCqlSfCgKi8MEZGHK0Xc70Y5trXs
Poke2Color	Poke2Color	I7ewiUSud0x9auT0PKp29393K5Hg3ymr1VJY5eUhoHEm	JLe4ijbRcj5L8S9cRPRGL7eoEIKjT8OOblhy/wyvSbze	SODgyWbHLhfjy4WWk6lhqhYXnP1FTjSjtzMTyZkl
Poke3	Poke3	lU95mOkt0cGucrsrIdAWuYnoJEnTTfIvu/QNUlcmI42A	kjl4lOMqobWYQyqX4KzBGYS8Q0OwPSfqwf29ymkypULP	iW9b2bszjJhv3puv87HNQXLW3Fb5uQVhWnnKU4nV
Poke4Lite	Poke4Lite	9SHJReeuD4hvqiwtY8mNlKTYqGkvgao4d9/9og7/EXhV	hiDOQumqD/7tGPsr5l69IdujC33cOPwOQw6C9wE8s8Xn
Poke4S	Poke4S	iq8+KrwLX7JGcq/B823vpSmVn5CJR2QscYDeArKjtn0B	+txDKcp4Kse6Ve1kBswZWQ68i+Kpab8BoXDrgpmqQrjz
Poke_Pro	Poke_Pro	6GxQ6Iei3y2PSf6Wlayz+0f6yVnl1GXe5OC3q3i2lasO	72lZ7vTQoy9/ESDKRQtx2V5uBMDiR+ik3n+soo9wGAbJ	hkkAqdfM93RpnCgXxhUqzme3OMzT6tDWC3fyibgW
SP_NoteSL	SP_NoteS	XjzywnKKh3FNVKphg5MZ9xILmDNYBZiCHTnkd6Q0fqpq	XDeIyQKAhQKj6/UmdAIWoL0aXmw9PeEFl9OpII/1TO9i	QmGqhFGXqiuQ9yoeVx0a2SQ8BNojjPn96o6hQW6U
livingstone-ru	LIVINGSTONE	ES5zbiHTesxFb+zdkjxiqJ+1dOwyOCv2BzCV7fOYDJxf	EFwGaFSherxX1k6Hl/U6TiQhGJOzTPDfsPzHg+z9guln	fQ5TLnfKUOHq0f7XXdu9b1FGAckqI576ZBPkZfPg

The models sold in Russia are marked with suffix -ru, some or all of the firmwares for which don't use the same strings with their international versions!

PS: SP_NoteS is SuperStar (chaoxing) verison.

How to get the strings

MODEL string is the model name, exactly the output of getprop ro.product.model and/or value of ro.product.model in the file /system/build.prop.

Other strings can be got in following steps:

1. Get /system/app/OnyxOtaService/OnyxOtaService.apk

   USB Debugging (adb) is one of the the available ways:

   1. Turn on adb in Settings -> Applications -> USB Debugging Mode

   2. (from @mgrub's note) Connect the ebook to computer by usb, run

      adb wait-for-device
      adb shell 'pm list packages -f | grep ota'

      And then the path of ota package will be showed. For example, the following output is in Nova Pro:

      package:/system/app/OnyxOtaService/OnyxOtaService.apk=com.onyx.android.onyxotaservice
      

      So in this case the path is /system/app/OnyxOtaService/OnyxOtaService.apk.

      In the following steps, we assume that the path is /system/app/OnyxOtaService/OnyxOtaService.apk.

   3. Run the following command

      adb pull /system/app/OnyxOtaService/OnyxOtaService.apk .

   Now the apk is got.

2. Get the strings from apk

   1. Use Apktool to decode the apk:

      apktool d OnyxOtaService.apk

   2. Now the strings should be in ./OnyxOtaService/res/values/strings.xml, for example the NovaPro one:

      <?xml version="1.0" encoding="utf-8"?>
      <resources>
          <string name="settings">j857wYAQcWZgvIEQ/tcQqzxreUJgFHwJl6D2TN9BuSkQ</string>
          <string name="upgrade">+soGw/YVdGIRJiAs5SMmv1ihW37H1Fa9+/1w2Vgt14Ag</string>
          <string name="local">lpsj9NJ8Kzv8jHb+OO8A5lxC+9Zhl243bFmDZYaF</string>
          
      </resources>

   settings is STRING_SETTINGS, upgrade is STRING_UPGRADE, and local is STRING_LOCAL

   In Boox OS since Android 11, these strings, which have been moved to libota_jni.so, are empty in strings.xml. In this case, please install and run GetBooxUpxKeys in your device to get keys, or refer to 22#issuecomment-964035840.

3. Add and verify (optional) the strings

   Add the strings to boox_strings in DeBooxUpx.py, use this script to decrypt a update.upx file (it can be got by the method in #2), and see if the update.zip file is a vaild zip file.

Contributing

Refer to CONTRIBUTING.md.