NTLM password not found

[DanielG]

Using https://tobtu.com/lmntlm.php I can turn František1 into the NTLM hash 902BD6FDDF5248CE7902174E408F3F1F which means your NTLM-hash is correct.

You also say you used ?b?b which did not lead to hashcat cracking it.

I too tried ./hashcat -a 3 -m 1000 902BD6FDDF5248CE7902174E408F3F1F Franti?bek1 and ./hashcat -a 3 -m 1000 902BD6FDDF5248CE7902174E408F3F1F Franti?b?bek1 but hashcat did not crack it.

If I make a NTLM hash of a variant without unicode char: Frantisek1 (64436D005F319C8AC790209424608CD2) and run ./hashcat -a 3 -m 1000 64436D005F319C8AC790209424608CD2 Franti?bek1 then hashcat does find it.

This is very strange, maybe hashcat doesn't do unicode well?

EDIT:

also trying  --hex-charset did not work, Franti in hex is 4672616e7469 and ek1 in hex is 656b31:

./hashcat -a 3 -m 1000 --hex-charset 902BD6FDDF5248CE7902174E408F3F1F 4672616e7469?b656b31

./hashcat -a 3 -m 1000 --hex-charset 902BD6FDDF5248CE7902174E408F3F1F 4672616e7469?b?b656b31

Nor does using ?h for hex chars:

./hashcat -a 3 -m 1000 --hex-charset 902BD6FDDF5248CE7902174E408F3F1F 4672616e7469?h?h656b31

./hashcat -a 3 -m 1000 --hex-charset 902BD6FDDF5248CE7902174E408F3F1F 4672616e7469?h?h?h?h656b31