BruteIt

Break It

---

Bölüm 1 - Bases

1.

[Super easy] MVQXG6K7MJQXGZJTGI======

Base32 kodlu bir dizedir. Bunu çözmek için base32yi kullanabiliriz.

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "MVQXG6K7MJQXGZJTGI======" | base32 -d
easy_base32

[Easy] TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09

Base64 kodlu bir dizedir. Bunu çözmek için base64ü kullanabiliriz.

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09" | base64 -d 
MRXXKYTMMVPWEYLTMVZQ====

Double encoded?

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09" | base64 -d | base32 -d
double_bases

[Moderate] GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======

Bu base32 tipi bir kodlama.

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======" | base32 -d            
38wSu8Ao9MJKoJZFwP2xtJ6PZ78HQhJ7dV4cEdyFWnEdsoqMFzdvNuJGgy93VS1qQQGefyqw7E36gs5Bq

Bir base58 dizisi.

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======" | base32 -d | base58 -d
59 6d 46 7a 5a 54 45 32 58 32 6c 7a 58 32 68 6c 65 41 3d 3d    

Bu sefer hexadecimal dizisi elde ediyoruz. Diziyi çevirmek için xxd kullanabiliriz:

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======" | base32 -d | base58 -d | xxd -r -p
YmFzZTE2X2lzX2hleA==

yine base64.

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======" | base32 -d | base58 -d | xxd -r -p | base64 -d   
base16_is_hex

[Hard] HRBUGQDUHFWDIXKUIBWXIJTHIE3DCY3BIE2FKQSZHNDE6MRUIA2TWWDMHRBV2ZKCHQWFCTLPIE2EEJDBIBZCEW3OHUSTOLRCHNFGMVC6IFJXIQ2AHVMVONSBHVOVIM2MHVPV42J4HQVCQ4REIFHVIJ2WHFWDYQSUHROGILJCIFIU23CXHNCEIXK2HRDVSXKOHV2SQJLC

Bize kolaylık sağlaması için, CyberChef sitesini kullanacağız:

• Çıktı: that_is_a_lot_of_bases

[Insane] 

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

Aynı şekilde CyberChef’e kopyala yapıştır yapıyoruz:

Manuel olarak yapmayı deneyelim:

Öncelikle bu bir base32 dizesi.

base85 gibi görünüyor, çünkü daha fazla özel karaktere sahip.

Bu sefer base10 dizesi:

Bu bir hexadecimal dizesi, veya base16:

Belki de base91? Bunu çözmek için dcode.fr sitesini kullanacağım:

base58 gibi görünüyor:

hexadecimal:

base64:

base10:

hexadecimal:

Sonunda bulduk!

Görev 2 - Base and cipher

Peki ua base ve cipherı aynı anda kullanırsak?

[Easy] PJXHQ4S7GEZV6ZTDOZQQ====

A base32 .

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "PJXHQ4S7GEZV6ZTDOZQQ====" | base32 -d
znxr_13_fcva

rot13??

[Moderate] NjZMKVhATl1EcEI2Jio4Q0xuVy1EZSo5ZkFLV0M6QVUtPFpGQ0InIkReYg==

base64 .

base85:

vigenre cipher?

[Hard] -!r/X,]n/Z-Zs\X,X$,rI<@]#-9Oh,-=A]R-p9\+

base85:

base91?

base64:

base32:

Görünüşe göre döndürülmüş:

[Insane]
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

base32:

base85:

base91:

base10:

hexadecimal:

base64:

vigenere cipher (key = tangodown):

Fakat bu düzgün bir dize değil. Geri dönelim.

base58:

vigenere decode:

Başardık!!

Görev 3 - Base, cipher, bit shift

Bu kombinasyonu çözebilir misin? Belki Hex workshop yardımcı olabilir.

1.

[Moderate] 2D 37 2B 19 31 99 31 B3 B2 AB A5 18 32 37 20 B3 B2 AC 2D 1A 31 B4 A1 3A A4 A3 9C B4 AD 36 AC 9E

• Hex Workshop’u açın, yeni bir dosya oluşturun ve “File” -> “New”:

• Click “Paste Special” -> check “Interpet as a hexadecimal string” -> choose “CF_TEXT” -> click “paste”:

Block shift left:

• Select “Block Shift Left” via “Tools” -> “Operations” -> “Block Shift Left”:

base64:

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "ZnV2c2cgeWJ0dnAgeXZ4ciBuIG9iZmY=" | base64 -d                
fuvsg ybtvp yvxr n obff

rot13:

[Hard] 19 1A 1C 99 1C 9C A8 38 27 B2 34 27 B9 27 26 28 3C 3B AA 28 A5 AA 2A 29 3C 29 B2 B2 21 B1 AC A6 1C AC 29 A8 38 99 2C

• Kopyalayın ve yapıştırın:

Shift left:

• “8 Bit Unsigned Byte” seçeneğini seçin:

base58:

rot13:

[Insane] A9 A8 2B EE 2A AA C9 C8 C9 AA A8 0F 2A 8A AA EE A9 8A CA A8 A9 4F 6D 46 E9 A8 A8 0F A9 8A 6D 86 A9 AA A9 26 2A 8A 48 E8

• Kopyalayın ve yapıştırın:

Rotate left:

• “Rotate Left” “Tools” -> “Operations” -> “Rotate Left”:

• “8 Bit Unsigned Byte”:

Rotate left:

Rotate left:

base64:

┌──(root@r3tr0)-[~/ctf/thm/ctf/Break_it]
└─# echo "MEYwQUNFNUExQTUwMTVEMzk2OEExMTk4MUM1QTBG" | base64 -d        
0F0ACE5A1A5015D3968A11981C5A0F

• Kopyalayın ve yapıştırın:

Block shift left twice:

base85:

rot13: