hacktricks/network-services-pentesting/pentesting-web/golang.md
2023-04-25 20:35:28 +02:00

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## CONNECT method
In golang, the library net/http usually transforms the path to a canonical one before accessing it:
* /flag/ -- Is responded with a redirect to /flag
* /../flag --- Is responded with a redirect to /flag
* /flag/. -- Is responded with a redirect to /flag
However, when the CONNECT method is used this doesn't happen. So, if you need to access some protected resource you can abuse this trick:
```text
curl --path-as-is -X CONNECT http://gofs.web.jctf.pro/../flag
```
[https://github.com/golang/go/blob/9bb97ea047890e900dae04202a231685492c4b18/src/net/http/server.go\#L2354-L2364](https://github.com/golang/go/blob/9bb97ea047890e900dae04202a231685492c4b18/src/net/http/server.go#L2354-L2364)
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