TokyoWesterns CTF 2020 Web Writeup

urlcheck1 - 98 points app.re_ip = re.compile('\A(\d+)\.(\d+)\.(\d+)\.(\d+)\Z') def valid_ip(ip): matches = app.re_ip.match(ip) if matches == None: return False ip = list(map(int, matches.groups())) if any(i > 255 for i in ip) == True: return False # Stay out of my private! if ip[0] in [0, 10, 127] \ or (ip[0] == 172 and (ip[1] > 15 or ip[1] < 32)) \ or (ip[0] == 169 and ip[1] == 254) \ or (ip[0]..