.text:004012C9 cmp edx, 7
.text:004012CC jb short loc_4012F9
***353
.text:004012F9 cmp [ebp+sn+5], '3'
.text:004012FD jnz short loc_4012CE
.text:004012FF cmp [ebp+sn+4], '5'
.text:00401303 jnz short loc_4012CE
.text:00401305 cmp [ebp+sn+3], '3'
.text:00401309 jnz short loc_4012CE
int(sn, 16) == 0x401353才会触发除0异常, 跳向成功
.text:00401349 test esi, esi ; int(sn, 16)
.text:0040134B jz short loc_40135D
.text:0040134D push eax
.text:0040134E call loc_401354
.text:00401353 db 0EBh
.text:00401354 pop eax
.text:00401355 sub eax, 0
.text:00401358 sub esi, eax
.text:0040135A div esi
