JCOW404.key unable to decrypt my enc file

[akiratoriyama]

OpenSSL gives the following error

*** WARNING : deprecated key derivation used. Using -iter or -pbkdf2 would be better. bad decrypt 20080000:error:1C800064:Provider routines:ossl_cipher_unpadblock:bad decrypt:providers\implementations\ciphers\ciphercommon_block.c:124:

[itsyourap]

Can you tell me your firmware version?

[akiratoriyama]

SRCMTF1_JCOW404_R2.15

[itsyourap]

Yes! The encryption password changed in the latest firmwares. Basically now the encryption key is specific for specific devices. The encryption key is a mixture of our router's serial number concatenated with the output of the command /usr/bin/prolinecmd acspwd display. Since the value of acspwd is unique for every device, I assume that there is no way to get root for now.

[itsyourap]

Also the first five characters of acspwd matches the last five characters of your default Wi-Fi SSID name. I don't know about the origin of the next eleven characters.

For example, if your default SSID is JioFiber-XrHGa, the first five characters of acspwd is XrHGa. Also if your router's serial number is suppose RSVOTKHEM097251, The complete encryption password would be RSVOTKHEM097251XrHGaXXXXXXXXXXX where XXXXXXXXXXX is the unknown eleven character string.

[itsyourap]

There is a solution to this 🎊

Use the WEB-UI to downgrade your router firmware to a version that used to work with this method.

[neelahagga]

Use the WEB-UI to downgrade your router firmware to a version that used to work with this method.

Where can I find such a version for JCO4032? @itsyourap

[itsyourap]

@neelahagga Idk- I didn't get a firmware for JCO4032 yet

[itsyourap]

Use this to get Root: https://github.com/itsyourap/JioFiber-Home-Gateway/blob/master/Instructions/Alternate-Way-To-Get-Root-Access-JioFiber-ONT-Home-Gateway.md