--- title: "Helpers" --- ## Helper Functions Examples Nuclei has a number of helper functions that may be used to conduct various run-time operations on the request block. Here's an example template that shows how to use all the available helper functions. ```yaml id: helper-functions-examples info: name: RAW Template with Helper Functions author: pdteam severity: info http: - raw: - | GET / HTTP/1.1 Host: {{Hostname}} 1: {{base64("Hello")}} 2: {{base64(1234)}} 3: {{base64_decode("SGVsbG8=")}} 4: {{base64_py("Hello")}} 5: {{compare_versions('v1.0.0', '>v0.0.1', 'test")}} 24: {{html_unescape("<body>test</body>")}} 25: {{join("_", "hello", "world")}} 26: {{len("Hello")}} 27: {{len(5555)}} 28: {{md5("Hello")}} 29: {{md5(1234)}} 30: {{mmh3("Hello")}} 31: {{print_debug(1+2, "Hello")}} 32: {{rand_base(5, "abc")}} 33: {{rand_base(5, "")}} 34: {{rand_base(5)}} 35: {{rand_char("abc")}} 36: {{rand_char("")}} 37: {{rand_char()}} 38: {{rand_int(1, 10)}} 39: {{rand_int(10)}} 40: {{rand_int()}} 41: {{rand_ip("192.168.0.0/24")}} 42: {{rand_ip("2002:c0a8::/24")}} 43: {{rand_ip("192.168.0.0/24","10.0.100.0/24")}} 44: {{rand_text_alpha(10, "abc")}} 45: {{rand_text_alpha(10, "")}} 46: {{rand_text_alpha(10)}} 47: {{rand_text_alphanumeric(10, "ab12")}} 48: {{rand_text_alphanumeric(10)}} 49: {{rand_text_numeric(10, 123)}} 50: {{rand_text_numeric(10)}} 51: {{regex("H([a-z]+)o", "Hello")}} 52: {{remove_bad_chars("abcd", "bc")}} 53: {{repeat("a", 5)}} 54: {{replace("Hello", "He", "Ha")}} 55: {{replace_regex("He123llo", "(\\d+)", "")}} 56: {{reverse("abc")}} 57: {{sha1("Hello")}} 58: {{sha256("Hello")}} 59: {{to_lower("HELLO")}} 60: {{to_upper("hello")}} 61: {{trim("aaaHelloddd", "ad")}} 62: {{trim_left("aaaHelloddd", "ad")}} 63: {{trim_prefix("aaHelloaa", "aa")}} 64: {{trim_right("aaaHelloddd", "ad")}} 65: {{trim_space(" Hello ")}} 66: {{trim_suffix("aaHelloaa", "aa")}} 67: {{unix_time(10)}} 68: {{url_decode("https:%2F%2Fprojectdiscovery.io%3Ftest=1")}} 69: {{url_encode("https://projectdiscovery.io/test?a=1")}} 70: {{wait_for(1)}} 71: {{zlib("Hello")}} 72: {{zlib_decode(hex_decode("789cf248cdc9c907040000ffff058c01f5"))}} 73: {{hex_encode(aes_gcm("AES256Key-32Characters1234567890", "exampleplaintext"))}} 74: {{starts_with("Hello", "He")}} 75: {{ends_with("Hello", "lo")}} 76: {{line_starts_with("Hi\nHello", "He")}} 77: {{line_ends_with("Hello\nHi", "lo")}} 78: {{ip_format("169.254.169.254", 4)}} ```