7z2john.pl: unsupported coders/filters

[AlbertVeli]

In the 2026 Crack Me If You Can contest challenge 2 contained 5 .7z files that have newer coders/filters that are not supported by 7z2john.pl.

The challenge can be downloaded from https://contest-2026.korelogic.com/downloads/ and decrypted with:

gpg --batch --passphrase '46d;;Ho@]3LgfH3t-z#)' -d cmiyc_2026_challenge_2.tar.pgp > cmiyc_2026_challenge_2.tar

This produces 5 .7z files. Running 7z2john.pl gives:

$ run/7z2john.pl test_*.7z 
WARNING: unsupported coder with codec id '0x040109' in file 'test_1.7z' found.
WARNING: unsupported coder with codec id '0x020304' in file 'test_2.7z' found.
WARNING: unsupported coder with codec id '0x0b' in file 'test_3.7z' found.
WARNING: unsupported coder with codec id '0x0a' in file 'test_4.7z' found.
WARNING: unsupported coder with codec id '0x020302' in file 'test_5.7z' found.

The codec IDs appear to correspond to:

Codec ID	Method/filter
0x040109	Deflate64
0x020304	Swap4
0x0b	RISC-V BCJ filter
0x0a	ARM64 BCJ filter
0x020302	Swap2

It would be useful if 7z2john.pl could support these methods/filters when extracting hashes from encrypted 7z archives.

[AlbertVeli]

According to the arrangers the passwords are supposed to be US patents for the first 4. The last has a hint in the filename inside the 7z. Patents look something like this: US 9,003,195 B1