Contains a kernel for the ODF 1.1 encryption implemented in OpenOffice.
The algorithm uses a SHA-1 checksum, a PBKDF2-HMAC-SHA1 key derivation
with 1024 iterations and Blowfish-CFB encryption.
Valid hashes can be extracted with the libreoffice2john.py script,
available from the John the Ripper Jumbo repository at
https://github.com/magnumripper/JohnTheRipper/blob/bleeding-jumbo/run/libreoffice2john.py
You have to remove the filename suffix at the end of the hash before
passing it to hashcat. Also see 'hashcat -m18600 --example-hashes'.
You can leave the filename prefix if you use the --username option to
process those hashes.
- Add hash-mode 18600 (Open Document Format (ODF) 1.1 (SHA-1, Blowfish))
- Tests: add hash-mode 18600 (Open Document Format (ODF) 1.1 (SHA-1, Blowfish))
There are approx. 240 snprintf calls that set the target buffer size to
out_len - 1 or similar. This "mind the null character" subtraction is
unnecessary since snprintf already includes the string termination into
the given buffer size.
Contains a kernel for the latest ODF 1.2 encryption implemented in
LibreOffice. The algorithm uses a SHA-256 checksum, a PBKDF2-HMAC-SHA1
key derivation with 100000 iterations and key stretching and AES-CBC
encryption.
Valid hashes can be extracted with the libreoffice2john.py script,
available from the John the Ripper Jumbo repository at
https://github.com/magnumripper/JohnTheRipper/blob/bleeding-jumbo/run/libreoffice2john.py
You have to remove the filename suffix at the end of the hash before
passing it to hashcat. Also see 'hashcat -m18400 --example-hashes'.
You can leave the filename prefix if you use the --username option to
process those hashes.
- Add hash-mode 18400 (Open Document Format (ODF) 1.2 (SHA-256, AES))
- Tests: add hash-mode 18400 (Open Document Format (ODF) 1.2 (SHA-256, AES))
The modification of existing core source files to add new hashcat kernels conflicts with the idea of having private hashcat kernel repositories especially when backporting latest hashcat core changes and new features.
The final outcome of this should be a plugin format that does not require modifications on the core soruce files.
Also convert all existing hash-modes to hashcat modules.
We'll start with dynamic loading the modules at runtime rather than linking them at compile time.
This will require some extra code for different OS types but should beneficial on a long term.
This commit add some first ideas of how such modules could look like, however there's no dynamic loading interface yet.
Next steps will be removing all hash-mode depending special code from source files and move them to the modules.
Finally merge with master.
Remove unnecessary constant variables by hardcoring values instead of
looking up. Precalculate swaps that are known at compile time. Hardcode
hashes_shown offset as zero for all TC / VC kernels.
