Help with Russian again

[epixoip]

Code:

epixoip@ike:~$ echo -n ьфдщн | iconv -f UTF-8 -t ISO-8859-5 | hexdump
00000000  ec e4 d4 e9 dd
00000005
epixoip@ike:~$ echo -n ьфдщн | iconv -f UTF-8 -t windows-1251 | hexdump
00000000  fc f4 e4 f9 ed
00000005

actually it looks like with windows-1251, all of the characters are essentially iso-8859 + 0x10. so you can build a mask attack using hex charset.