Vaf – Very Advanced (Web) Fuzzer

very advanced fuzzer

compiling

1. Install nim from nim-lang.org
2. Run

nimble build

A vaf.exe file will be created in your directory ready to be used

using vaf

using vaf is simple, here’s the current help text:

Usage:
  vaf - very advanced fuzzer [options]

Options:
  -h, --help
  -u, --url=URL              choose url, replace area to fuzz with []
  -w, --wordlist=WORDLIST    choose the wordlist to use
  -sc, --status=STATUS       set on which status to print, set this param to 'any' to print on any status (default: 200)
  -pr, --prefix=PREFIX       prefix, e.g. set this to / for content discovery if your url doesnt have a / at the end (default: )
  -sf, --suffix=SUFFIX       suffix, e.g. use this for extensions if you are doing content discovery (default: )
  -pd, --postdata=POSTDATA   only used if '-m post' is set (default: {})
  -m, --method=METHOD        suffix, e.g. use this for extensions if you are doing content discovery (default: get)
  -pif, --printifreflexive   print only if the output reflected in the page, useful for finding xss
  -ue, --urlencode           url encode the payloads
  -pu, --printurl            prints the url that has been requested

screenshots

(with every status code printed, suffixes .php,.html and no prefixes)

(with url printed, every status code printed, suffixes .php,.html and no prefixes)

(post data fuzzing)

examples

Fuzz post data:

vaf.exe -w example_wordlistsshort.txt -u https://jsonplaceholder.typicode.com/posts -m post -sc 201 -pd "{"title": "[]"}"

Fuzz GET URLs

vaf.exe -w example_wordlistsshort.txt -u https://example.org/[] -sf .html

tips

• Add a trailing , in the suffixes or prefixes argument to try the word without any suffix/prefix like this: -pf .php, or -sf .php,
• Use -pif with a bunch of xss payloads as the wordlist to find XSS
• Make an issue if you want to suggest a feature