Rating:
The tricky part it’s that you can have a valid file listing but corrupted file if disk order is not good.
I had to try all the disks permutation order anc check if the pdf file was corrupted or not; this is the good order:
```
losetup --find --show disk1.img
losetup --find --show disk2.img
mdadm --create --assume-clean --level=5 --raid-devices=3 /dev/md0 /dev/loop1 missing /dev/loop0
mount /dev/md0 /mnt/raid
ls -lah /mnt/raid
total 4,1M
drwxrwxrwx 2 root root 1,0K 8 avril 08:12 .
drwxr-xr-x 1 root root 22 15 mai 22:14 ..
-rwxrwxrwx 1 sky lpadmin 4,1M 7 avril 18:44 imw_1337.pdf
```
The flag is in the pdf file
