/// WriteUp ASIS CTF Finals 2013 – Stego 400 – Mysterious Points

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14 Сен / 2013
Author: d1ment Tags: , , Comments: 0

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Description:
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Hint: Internet is your friend.


Ищем в google оригинал:
CHICYG-E
Находим разницу между ними:
raznicha

Декодируем картинку получаем zip.
zip -> flag.txt (под паролем)
-> fact0real twitter account -> strange avatar.jpg
a5961ec964d5b6fb63f07f10adad8d44
Используем QR декодер:

KioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKgoqIEk
nbSBmYWN0b3JlYWwsIG1lbWJlciBvZiBBU0lTIENURiB0ZWFtIGFuZCAqCiogbWFuYW
dlciBvZiBBRU9JIENURiEgWW91IGNhbiBjb250YWN0IG1lICAgICoKKiB3aXRoIGN0Z
kBhc2lzLWN0Zi5pci4JCSAgICAgICAgICAgICAqCiogSSBsb3ZlIEZhdGltYWggOikg
ICAgICAgICAgICAgICAgICAgICAgICAgICoKKioqKioqKioqKioqKioqKioqKioqKio
qKioqKioqKioqKioqKioqKioqKioqKgoK

Декодируем Base64:

**********************************************
* I’m factoreal, member of ASIS CTF team and *
* manager of AEOI CTF! You can contact me *
* with ctf@asis-ctf.ir. *
* I love Fatimah 🙂 *
**********************************************

love Fatimah 🙂 это пароль от flag.txt


FLAG: ASIS_1274a1c4f3a6f00ae92d2985f1413759




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