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Crypto CTFs Tricks

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Online Hashes DBs

Magic Autosolvers

Encoders

Most of encoded data can be decoded with these 2 ressources:

Ascii85
- BQ%]q@psCd@rH0l
Base26 [A-Z]
- BQEKGAHRJKHQMVZGKUXNT
Base32 [A-Z2-7=]
- NBXWYYLDMFZGCY3PNRQQ====
Zbase32 [ybndrfg8ejkmcpqxot1uwisza345h769]
- pbzsaamdcf3gna5xptoo====
Base32 Geohash [0-9b-hjkmnp-z]
- e1rqssc3d5t62svgejhh====
Base32 Crockford [0-9A-HJKMNP-TV-Z]
- D1QPRRB3C5S62RVFDHGG====
Base32 Extended Hexadecimal [0-9A-V]
- D1NMOOB3C5P62ORFDHGG====
Base45 [0-9A-Z $%*+-./:]
- 59DPVDGPCVKEUPCPVD
Base58 (bitcoin) [1-9A-HJ-NP-Za-km-z]
- 2yJiRg5BF9gmsU6AC
Base58 (flickr) [1-9a-km-zA-HJ-NP-Z]
- 2YiHqF5bf9FLSt6ac
Base58 (ripple) [rpshnaf39wBUDNEGHJKLM4PQ-T7V-Z2b-eCg65jkm8oFqi1tuvAxyz]
- pyJ5RgnBE9gm17awU
Base62 [0-9A-Za-z]
- g2AextRZpBKRBzQ9
Base64 [A-Za-z0-9+/=]
- aG9sYWNhcmFjb2xh
Base67 [A-Za-z0-9-.!~_]
- NI9JKX0cSUdqhr!p
Base85 (Ascii85) [!"#$%&'()*+,-./0-9:;<=>?@A-Z[\]^_`a-u]
- BQ%]q@psCd@rH0l
Base85 (Adobe) [!"#$%&'()*+,-./0-9:;<=>?@A-Z[\]^_`a-u]
- <~BQ%]q@psCd@rH0l~>
Base85 (IPv6 or RFC1924) [0-9A-Za-z!#$%&()*+-;<=>?@^`{|}~_]
- Xm4yV_|Y(V{dF>`
Base85 (xbtoa) [!"#$%&'()*+,-./0-9:;<=>?@A-Z[\]^_`a-u]
- xbtoa Begin\nBQ%]q@psCd@rH0l\nxbtoa End N 12 c E 1a S 4e6 R 6991d
Base85 (XML) [0-9A-Za-y!#$()*+,-./:;=?@^`{|}~z_]
- Xm4y|V{~Y+V}dF?
Base91 [A-Za-z0-9!#$%&()*+,./:;<=>?@[]^_`{|}~"]
- frDg[*jNN!7&BQM
Base100 []
- 👟👦👣👘👚👘👩👘👚👦👣👘
Base122 []
- 4F ˂r0Xmvc
ATOM-128 [/128GhIoPQROSTeUbADfgHijKLM+n0pFWXY456xyzB7=39VaqrstJklmNuZvwcdEC]
- MIc3KiXa+Ihz+lrXMIc3KbCC
HAZZ15 [HNO4klm6ij9n+J2hyf0gzA8uvwDEq3X1Q7ZKeFrWcVTts/MRGYbdxSo=ILaUpPBC5]
- DmPsv8J7qrlKEoY7
MEGAN35 [3G-Ub=c-pW-Z/12+406-9Vaq-zA-F5]
- kLD8iwKsigSalLJ5
ZONG22 [ZKj9n+yf0wDVX1s/5YbdxSo=ILaUpPBCHg8uvNO4klm6iJGhQ7eFrWczAMEq3RTt2]
- ayRiIo1gpO+uUc7g
ESAB46 []
- 3sHcL2NR8WrT7mhR
MEGAN45 []
- kLD8igSXm2KZlwrX
TIGO3FX []
- 7AP9mIzdmltYmIP9mWXX
TRIPO5 []
- UE9vSbnBW6psVzxB
FERON74 []
- PbGkNudxCzaKBm0x
GILA7 []
- D+nkv8C1qIKMErY1
Citrix CTX1 []
- MNGIKCAHMOGLKPAKMMGJKNAINPHKLOBLNNHILCBHNOHLLPBK

http://k4.cba.pl/dw/crypo/tools/eng_atom128c.html - 404 Dead: https://web.archive.org/web/20190228181208/http://k4.cba.pl/dw/crypo/tools/eng_hackerize.html

HackerizeXS [╫Λ↻├☰┏]

╫☐↑Λ↻Λ┏Λ↻☐↑Λ

http://k4.cba.pl/dw/crypo/tools/eng_hackerize.html - 404 Dead: https://web.archive.org/web/20190228181208/http://k4.cba.pl/dw/crypo/tools/eng_hackerize.html

Morse

.... --- .-.. -.-. .- .-. .- -.-. --- .-.. .-

http://k4.cba.pl/dw/crypo/tools/eng_morse-encode.html - 404 Dead: https://gchq.github.io/CyberChef/

UUencoder

begin 644 webutils_pl
M2$],04A/3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/3$%(
M3TQ!2$],04A/3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/
F3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/3$%(3TQ!2$],04A/3$$`
`
end

http://www.webutils.pl/index.php?idx=uu

XXEncoder

begin 644 webutils_pl
hG2xAEIVDH236Hol-G2xAEIVDH236Hol-G2xAEIVDH236Hol-G2xAEIVDH236
5Hol-G2xAEE++
end

www.webutils.pl/index.php?idx=xx

YEncoder

=ybegin line=128 size=28 name=webutils_pl
ryvkryvkryvkryvkryvkryvkryvk
=yend size=28 crc32=35834c86

http://www.webutils.pl/index.php?idx=yenc

BinHex

(This file must be converted with BinHex 4.0)
:#hGPBR9dD@acAh"X!$mr2cmr2cmr!!!!!!!8!!!!!-ka5%p-38K26%&)6da"5%p
-38K26%'d9J!!:

http://www.webutils.pl/index.php?idx=binhex

ASCII85

<~85DoF85DoF85DoF85DoF85DoF85DoF~>

http://www.webutils.pl/index.php?idx=ascii85

Dvorak keyboard

drnajapajrna

https://www.geocachingtoolbox.com/index.php?lang=en&page=dvorakKeyboard

A1Z26

Letters to their numerical value

8 15 12 1 3 1 18 1 3 15 12 1

Affine Cipher Encode

Letter to num (ax+b)%26 (a and b are the keys and x is the letter) and the result back to letter

krodfdudfrod

SMS Code

Multitap replaces a letter by repeated digits defined by the corresponding key code on a mobile phone keypad (This mode is used when writing SMS).
For example: 2=A, 22=B, 222=C, 3=D...
You can identify this code because you will see** several numbers repeated**.

You can decode this code in: https://www.dcode.fr/multitap-abc-cipher

Bacon Code

Substitude each letter for 4 As or Bs (or 1s and 0s)

00111 01101 01010 00000 00010 00000 10000 00000 00010 01101 01010 00000
AABBB ABBAB ABABA AAAAA AAABA AAAAA BAAAA AAAAA AAABA ABBAB ABABA AAAAA

Runes

Compression

Raw Deflate and Raw Inflate (you can find both in Cyberchef) can compress and decompress data without headers.

Easy Crypto

XOR - Autosolver

https://wiremask.eu/tools/xor-cracker/

Bifid

A keywork is needed

fgaargaamnlunesuneoa

Vigenere

A keywork is needed

wodsyoidrods

Strong Crypto

Fernet

2 base64 strings (token and key)

Token:
gAAAAABWC9P7-9RsxTz_dwxh9-O2VUB7Ih8UCQL1_Zk4suxnkCvb26Ie4i8HSUJ4caHZuiNtjLl3qfmCv_fS3_VpjL7HxCz7_Q==

Key:
-s6eI5hyNh8liH7Gq0urPC-vzPgNnxauKvRO4g03oYI=

https://asecuritysite.com/encryption/ferdecode

A secret is splitted in X parts and to recover it you need Y parts (Y <=X).

8019f8fa5879aa3e07858d08308dc1a8b45
80223035713295bddf0b0bd1b10a5340b89
803bc8cf294b3f83d88e86d9818792e80cd

http://christian.gen.co/secrets/

OpenSSL brute-force

Tools