Helper function for IP Formats

[ehsandeep]

Please describe your feature request:

Helper function to support https://github.com/projectdiscovery/mapcidr#ip-formats

Describe the use case of this feature:

To write templates including IP in various formats to fuzz/bypass multiple IP-based protection.

id: basic-raw-example

info:
  name: Test RAW Template
  author: pdteam
  severity: info

requests:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{ips}}
        Origin: {{BaseURL}}

    payloads:
      ips:
        - "{{ip_format("127.0.1.0", 3)}}"
        - "{{ip_format("169.254.169.254", 4)}}"
        - "{{ip_format(ip, 4)}}"

[0xAwali]

any chance to implement helper function too {{ip("domain.com")}} to get ip of domain.com

[ehsandeep]

@0xAwali do you mind sharing some use cases in the template of this?

[0xAwali]

two cases one of them while bypassing 403 status code by using X-Forwards-For: {{ip("Host")}} not 127.0.0.1 e.g.

id: test

info:
  name: test template
  author: 0xAwali
  severity: info

requests:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        X-Forwards-For: {{ip("Host")}}

and the second is compare between request with hostname as Host header and IP as Host header to figure out target use vhosts or not

[ehsandeep]

thanks, added details here - https://github.com/projectdiscovery/nuclei/issues/2305

[atdash]

@princechaddha New helpers include examples: please update documentation @Mzack9999 @ehsandeep Please add 'Type: Documentation' label if docs need updating

[JaneX8]

This is for CIDR support? For IPv4 CIDR only or also IPv6 CIDR? The naming could be more specific instead of ip unless it's for both v4/v6. Also we need documentation for this.