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http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_system&no=1600 [복사]
쉘코드를 만들떄
08048398 <main>:
8048398: eb 16 jmp 80483b0 <go>
0804839a <func>:
804839a: 5b pop %ebx
804839b: b8 mov $0x0,%eax
80483a0: 50 push %eax
80483a1: 53 push %ebx
80483a2: 89 e1 mov %esp,%ecx
80483a4: ba mov $0x0,%edx
80483a9: b8 0b mov $0xb,%eax
80483ae: cd 80 int $0x80
080483b0 <go>:
80483b0: e8 e5 ff ff ff call 804839a <func>
80483b5: 2f das
80483b6: 62 69 6e bound %ebp,0x6e(%ecx)
80483b9: 2f das
80483ba: 73 68 jae 8048424 <_IO_stdin_used+0x18>
80483bc: 90 90 90 55 89 add %dl,0x89559090(%eax)
여기서 00이라고 보이는건 다 빼버렸습니다....
근데 여기서
[root@window_han /root]# gcc -o shellcode shellcode.c
[root@window_han /root]# ./shellcode
Illegal instruction (core dumped)
[root@window_han /root]#
요러케 뜨네요... 저건 어떨떄 생기는 오류인가요? |
Hit : 3723 Date : 2012/07/30 09:58
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1574, 
7/79 
windowhan
