Finding some weird features (rules)

[atom]

there is something wrong with your test, because $1@1u should find it. you sure you tried it correct? here is my log on which you will see its found:

root@sf:~/hashcat-0.40# cat > hash
1b34b9287ad35d9ec421b26fd3ad9456
root@sf:~/hashcat-0.40# cat > word
ragnarok
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word
root@sf:~/hashcat-0.40# echo u > rule
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word -r rule
1b34b9287ad35d9ec421b26fd3ad9456:RAGNAROK
root@sf:~/hashcat-0.40# echo @1u > rule
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word -r rule
root@sf:~/hashcat-0.40# echo ^1@1u > rule
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word -r rule
1b34b9287ad35d9ec421b26fd3ad9456:RAGNAROK
root@sf:~/hashcat-0.40# echo '$1@1u' > rule
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word -r rule
1b34b9287ad35d9ec421b26fd3ad9456:RAGNAROK
root@sf:~/hashcat-0.40# echo 'i81@1u' > rule
root@sf:~/hashcat-0.40# ./hashcat-cli64.bin --quiet hash word -r rule
1b34b9287ad35d9ec421b26fd3ad9456:RAGNAROK

rules are executed from left to right. if some function return bad result, the rule rejects and hashcat does not try to crack it. thats why @1u can not find it, because @1 does not hit anything, so it rejects.