From b30c82c391e8b6dd553c4cec42144eaa707bb9e0 Mon Sep 17 00:00:00 2001
From: Quentin Dufour <quentin@dufour.io>
Date: Sat, 7 Jul 2018 18:41:16 +0200
Subject: [PATCH] Ajout du script

---
 _posts/2018-07-01-ndh16.md |  5 ++++-
 assets/code/basiq.py       | 12 ++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 assets/code/basiq.py

diff --git a/_posts/2018-07-01-ndh16.md b/_posts/2018-07-01-ndh16.md
index ffc433d..5e3101b 100644
--- a/_posts/2018-07-01-ndh16.md
+++ b/_posts/2018-07-01-ndh16.md
@@ -171,7 +171,8 @@ C'est de l'hexadécimal. On récupère le tout dans python sous la forme d'un bu
 exif_data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
 
 d1 = bytearray.fromhex(exif_data)
-# On a en ASCII : MJWVE32NKRNGMZJTORVU46THPBHDESTIJUZFS6KZGJMTETKXLE2U4MSVGNGXUQLZJUZEU3KPIRCTCWSXJJWU6V2GNRGW2RTKJVVFU222IRGXOWLNJU2E2RCSNBHG2SJRJZCFSMC2I5LGYTSENM2E6V2ONJNFIUL2JVLVS6CONJEXQWSXKE2U6RCKNVNEIULYLJWUKNCNIRAXOTTNJU2E6V2SNJMXURJTLJKFK6SZKRIXOT2ELJUFU3KKNJMVOSL2LEZEU2SPI5ITGTT2JUZU2VCKNRHFIZZSJUZTCOI=
+print(d1)
+# Ce qui affiche : MJWVE32NKRNGMZJTORVU46THPBHDESTIJUZFS6KZGJMTETKXLE2U4MSVGNGXUQLZJUZEU3KPIRCTCWSXJJWU6V2GNRGW2RTKJVVFU222IRGXOWLNJU2E2RCSNBHG2SJRJZCFSMC2I5LGYTSENM2E6V2ONJNFIUL2JVLVS6CONJEXQWSXKE2U6RCKNVNEIULYLJWUKNCNIRAXOTTNJU2E6V2SNJMXURJTLJKFK6SZKRIXOT2ELJUFU3KKNJMVOSL2LEZEU2SPI5ITGTT2JUZU2VCKNRHFIZZSJUZTCOI=
 ```
 
 J'essaye de décoder l'ASCII du buffer comme de la base64 mais rien. Un peu d'aide exterieure (merci !) me suggère d'essayer la base32 dont je n'avais jamais entendu parler.
@@ -192,6 +193,8 @@ print(d3)
 # Ce qui affiche : ndh16_{% raw %}{{d7817ba3f2cf61f97e73023bf815ebf9ae2ac26dd30bc804a6b5464dee4989cce431f1621ed982fd41fa80006c89dcc17e53a4086afbcab3cbc8d773712e5863}}{% endraw %}
 ```
 
+[Télécharger le script au complet](/assets/code/basiq.py)
+
 Le drapeau était donc : 
 
 ```raw
diff --git a/assets/code/basiq.py b/assets/code/basiq.py
new file mode 100644
index 0000000..6114304
--- /dev/null
+++ b/assets/code/basiq.py
@@ -0,0 +1,12 @@
+exif_data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
+
+d1 = bytearray.fromhex(exif_data)
+print(d1)
+
+import base64
+
+d2 = base64.b32decode(d1)
+print(d2)
+
+d3 = base64.b64decode(d2)
+print(d3)