Fuzzing: Replace Regex Mode ( we currently support infix,postfix,prefix,replace )

[tarunKoyalwar]

Proposed Changes

• Nuclei Fuzzing module already supports postfix,prefix,infix,replace rules, which specify how to handle new payload value, but sometimes exact value may not be known while replacing .

Ex: replacing a numerical value in path with a sqli payload, while this can't be achieved using replace directly because it will replace complete path at once ( and path is not known earlier) but this can now be achieved using this

    fuzzing:
      - part: path
        type: replace-regex
        mode: single
        replace-regex: '/(.*?/)([0-9]+)(/.*)?'
        fuzz:
          - '/${1}${2}{{pathsqli}}${3}'