Update cheatsheets

tldr/x8

@@ -0,0 +1,41 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# x8
+
+> A hidden parameters discovery suite for identifying vulnerable or interesting web parameters.
+> More information: <https://sh1yo.art/x8docs/>.
+
+- Check hidden parameters in a URL query:
+
+`x8 {{[-u|--url]}} {{https://example.com/}} {{[-w|--wordlist]}} {{path/to/wordlist.txt}}`
+
+- Check parameters with a custom query injection point (`%s`):
+
+`x8 {{[-u|--url]}} {{https://example.com/?something=1%26%s}} {{[-w|--wordlist]}} {{path/to/wordlist.txt}}`
+
+- Send parameters via POST body with JSON format:
+
+`x8 {{[-u|--url]}} {{https://example.com/}} {{[-X|--method]}} {{POST}} {{[-b|--body]}} {{'{"x":{%s}}'}} {{[-w|--wordlist]}} {{path/to/wordlist.txt}}`
+
+- Check parameters with a custom template (`%k` for key, `%v` for value):
+
+`x8 {{[-u|--url]}} {{https://example.com/}} {{[-P|--param-template]}} {{user[%k]=%v}} {{[-w|--wordlist]}} {{path/to/wordlist.txt}}`
+
+- Encode parameters for special characters in queries:
+
+`x8 {{[-u|--url]}} {{https://example.com/?path=..%2faction.php%3f%s%23}} --encode {{[-w|--wordlist]}} {{path/to/wordlist.txt}}`
+
+- Discover hidden headers for a URL:
+
+`x8 {{[-u|--url]}} {{https://example.com/}} --headers {{[-w|--wordlist]}} {{path/to/headers.txt}}`
+
+- Check multiple URLs in parallel with high concurrency and verify found parameters:
+
+`x8 {{[-u|--url]}} {{https://example.com/}} {{https://4rt.one/}} {{[-W|--workers]}} {{0}} -c {{3}} --verify`
+
+- Save request and response data for found parameters to a directory:
+
+`x8 {{[-u|--url]}} {{https://example.com/}} {{[-w|--wordlist]}} {{path/to/wordlist.txt}} --save-responses {{path/to/output_dir}}`