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32
pentesting-web/ssrf-server-side-request-forgery/url-format-bypass.md
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@ -4,15 +4,11 @@
<summary><strong>Support HackTricks and get benefits!</strong></summary>
- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
- **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
* **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
</details>
@ -169,6 +165,10 @@ https://metadata/vulerable/path#.extension
https://metadata/expected/path/..%2f..%2f/vulnerable/path
```
### Fuzzing
The tool [**recollapse**](https://github.com/0xacb/recollapse) can generate variations from a given input to try to bypass the used regex. Check [**this post**](https://0xacb.com/2022/11/21/recollapse/) also for more information.
### Bypass via redirect
It might be possible that the server is **filtering the original request** of a SSRF **but not** a possible **redirect** response to that request.\
@ -216,14 +216,10 @@ image from [https://claroty.com/2022/01/10/blog-research-exploiting-url-parsing-
<summary><strong>Support HackTricks and get benefits!</strong></summary>
- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
- **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
* **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
</details>

8
pentesting-web/unicode-injection/unicode-normalization.md
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@ -34,7 +34,7 @@ An example of how Unicode normalise two different bytes representing the same ch
![](<../../.gitbook/assets/image (156).png>)
**A list of Unicode equivalent characters can be found here:** [https://appcheck-ng.com/wp-content/uploads/unicode\_normalization.html](https://appcheck-ng.com/wp-content/uploads/unicode\_normalization.html)
**A list of Unicode equivalent characters can be found here:** [https://appcheck-ng.com/wp-content/uploads/unicode\_normalization.html](https://appcheck-ng.com/wp-content/uploads/unicode\_normalization.html) and [https://0xacb.com/normalization\_table](https://0xacb.com/normalization\_table)
### Discovering
@ -94,6 +94,12 @@ Notice that for example the first Unicode character purposed can be sent as: `%e
![](<../../.gitbook/assets/image (215) (1).png>)
### Fuzzing Regexes
When the backend is **checking user input with a regex**, it might be possible that the **input** is being **normalized** for the **regex** but **not** for where it's being **used**. For example, in an Open Redirect or SSRF the regex might be **normalizing the sent UR**L but then **accessing it as is**.
The tool [**recollapse**](https://github.com/0xacb/recollapse) **** allows to **generate variation of the input** to fuzz the backend. Fore more info check the **github** and this [**post**](https://0xacb.com/2022/11/21/recollapse/).
## References
**All the information of this page was taken from:** [**https://appcheck-ng.com/unicode-normalization-vulnerabilities-the-special-k-polyglot/#**](https://appcheck-ng.com/unicode-normalization-vulnerabilities-the-special-k-polyglot/)