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54 lines
2.4 KiB
Markdown
54 lines
2.4 KiB
Markdown
# HTTP Hidden Parameters
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> Web applications often have hidden or undocumented parameters that are not exposed in the user interface. Fuzzing can help discover these parameters, which might be vulnerable to various attacks.
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## Summary
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* [Tools](#tools)
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* [Methodology](#methodology)
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* [Bruteforce Parameters](#bruteforce-parameters)
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* [Old Parameters](#old-parameters)
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* [References](#references)
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## Tools
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* [PortSwigger/param-miner](https://github.com/PortSwigger/param-miner) - Burp extension to identify hidden, unlinked parameters.
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* [s0md3v/Arjun](https://github.com/s0md3v/Arjun) - HTTP parameter discovery suite
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* [Sh1Yo/x8](https://github.com/Sh1Yo/x8) - Hidden parameters discovery suite
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* [tomnomnom/waybackurls](https://github.com/tomnomnom/waybackurls) - Fetch all the URLs that the Wayback Machine knows about for a domain
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* [devanshbatham/ParamSpider](https://github.com/devanshbatham/ParamSpider) - Mining URLs from dark corners of Web Archives for bug hunting/fuzzing/further probing
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## Methodology
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### Bruteforce Parameters
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* Use wordlists of common parameters and send them, look for unexpected behavior from the backend.
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```ps1
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x8 -u "https://example.com/" -w <wordlist>
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x8 -u "https://example.com/" -X POST -w <wordlist>
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```
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Wordlist examples:
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- [Arjun/large.txt](https://github.com/s0md3v/Arjun/blob/master/arjun/db/large.txt)
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- [Arjun/medium.txt](https://github.com/s0md3v/Arjun/blob/master/arjun/db/medium.txt)
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- [Arjun/small.txt](https://github.com/s0md3v/Arjun/blob/master/arjun/db/small.txt)
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- [samlists/sam-cc-parameters-lowercase-all.txt](https://github.com/the-xentropy/samlists/blob/main/sam-cc-parameters-lowercase-all.txt)
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- [samlists/sam-cc-parameters-mixedcase-all.txt](https://github.com/the-xentropy/samlists/blob/main/sam-cc-parameters-mixedcase-all.txt)
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### Old Parameters
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Explore all the URL from your targets to find old parameters.
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* Browse the [Wayback Machine](http://web.archive.org/)
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* Look through the JS files to discover unused parameters
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## References
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- [Hacker tools: Arjun – The parameter discovery tool - Intigriti - May 17, 2021](https://blog.intigriti.com/2021/05/17/hacker-tools-arjun-the-parameter-discovery-tool/)
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- [Parameter Discovery: A quick guide to start - YesWeHack - April 20, 2022](http://web.archive.org/web/20220420123306/https://blog.yeswehack.com/yeswerhackers/parameter-discovery-quick-guide-to-start) |