Hello,

i have received a soft in dos format, and i never worked with a dos application - dongle protected.

The cd contain sentdos.sys (SENTINEL.538 and SENTINEL.539)

Its difficult without API but i had play with bpio 21 if ah == xxx... and i think i have found something but without result (application exit without complain about key or other)

So if someone have experience about sentdos.sys, cracking dongle (sentinel) in dos or some ideas, thanks to share your experience.

PS : i know bpio 378, thanks !
PS2 : i've already cracked dongle in win32 too, but never who telling complicated cryptostuff

Thanks!