Products > Test Equipment
R&S RTB2004 Snooping
<< < (10/20) > >>
tv84:

--- Quote from: KaneTW on October 16, 2020, 04:38:32 pm ---How did you decrypt the FWU? I tried with the AES key posted in this thread, but it failed.

--- End quote ---

It's AES-256, not AES-128. You have to consider the 32 bytes of the key.
KaneTW:
Oh. I didn't realize it was 0-padded 256-bit AES. It even worked the last time round, I just didn't notice that it succeeded. Oops.

E: welp, didn't work. just didn't fail, but the data's still encrypted. hmm.
ElectronMan:
Make sure you're using AES-256CBC with an IV of 0. Openssl can be used.
abyrvalg:
If all you want from decrypted FWU is to get the main part for study - just find the ELF header signature (7F "ELF") and rip from there till end of file, you'll get a correct ELF.
KaneTW:
Using this:

--- Code: --- openssl aes-256-cbc -K 43C6B3E57510A3C5547AA4DF9528B783  -iv 0 -in RTB2004.FWU -out RTB2004.FWU.dec
--- End code ---

Resulting .dec file is either compressed or encrypted (bytes are uniformly distributed)
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod