hashcat Forum

Hi everybody

I'm trying to figure out how to decrypt RSA private key with hashcat.

I've generated a private key with openssl like this

Code:
openssl genrsa -des -passout pass:1234 1536

So encryption is DES-CBC, the passpharse is fairly simple - 1234 (it's just for test reasons).

Example of resulting key is

Code:
-----BEGIN RSA PRIVATE KEY-----

Proc-Type: 4,ENCRYPTED

DEK-Info: DES-CBC,E828531F782F4302

U6p58zsHpF/jXjhfmmzBJRu75QqmA/oLVZtgYwh5RbROZx/GUIyDZlXxZnes7EW4

ZaepH6/kgCc8AslKU602uvl6HL0Iikbp/UXXNrhNiMSuglIh9c3TPbwN33RkFKS7

sI7Niz8JWP9kzqekT6RlVX454vHXM3yrSoCV5PS6wPGSQltqCJt62uHmFzpGoONT

9j4F1wGzhVevbrCLadAl/NOs6NSxJQ3wUZz2DWS4u362MSLXcoA19JyKeJtZbch6

Py0Zm87dhuvFsotmJ1tLKLCRedjiQ+syQMr4fOF9PyYRWAgnMOrliSDVQyNqsWo1

YSUsyVWxxLdFxQF789AZzHLyTvJOLkfIhXHO/euasyHTZdXV5wAHCyWXwq722rLE

m9lVHtQwpbmStrh2pU5Z/E2sRENu13rCJmXBYdE5AFmdqP6/ss5Gb+CUTUnm/Bnc

RNCkGaaLEeu8zPoprgebj9xIIPAmSLkg8towBqj4Q+VFciScIeNa5DqKFMBwuF3j

SmjkLxb7jL5//M7Hmhm5Ki/hpr02bbr7GZD5P98VteZwUO+H/hk82Jsaq6v6Q5Eg

loVarhfz4eKV89UZQKaogaOyNKG+EZhDingzx81bZFU5TEyuHG+xTJIEbKhCfYW/

s+sGknE3gkXWrgMAxwcyhlLbeWTsxEYbs+KdcrAn5Y86Ud0JZPT1DUC74qkHul/d

XjhWXj44dMMeuShG0M2URQQ6QKjgATRhQviAzuyKzzoySRJucMGg4btousnSgFsK

Pt+8DArkHIejSoBa3wI33l7NizLrPbEbBXMGHXz/j8hDd5tfGosOGu2JKBbb9mqF

D6FkPPOCrS31vG2jmViSG/CgUjA7YEcVKZBZKGVqiYtbX9lO2FHwRuX4ZN5GJOcL

KNoiCHyOmnVt7Vl6k4wtpDnlLk458URp+xYN+CmBlCkxILRi7Xiuq3PX50n6iPqF

AuhWUD+GooPIZP742qKzQ1vZPhWWA93P0wBEzBipC3lfQMnWaL5JNv0meR71Kves

77tGqo17Q1rjGXJZZr2FSt+u0p/HKpQEEfsP6+RgE9gNTRahfd0UwAGOvTWqic7b

QuNkFyvOvUKsE/OxN1S9YJIdEHafqwJAPWJYsyEAJrbDfZ4vn7hXIcbVoB05YlvN

oF0TKJRa0sXUtVCPwkOmEOL66LaD3m5b1a161GA3VgoTNVujsQwNIw==

-----END RSA PRIVATE KEY-----

Now I'm trying to feed whole key to hashcat

Code:
hashcat64.exe -a 3 -w 3 -m 1500 private.key

Got this error

Code:
Hashfile 'private.key' on line 1 (-----BEGIN RSA PRIVATE KEY-----): Token length exception

Hashfile 'private.key' on line 2 (Proc-Type: 4,ENCRYPTED): Token length exception

Hashfile 'private.key' on line 3 (DEK-Info: DES-CBC,59A46C68A8D8EA3D): Token length exception

Hashfile 'private.key' on line 5 (ESBmXm...epPx92kMu8zaKFPErsKsGftS7SJ1/tMp): Token length exception

Hashfile 'private.key' on line 6 (qUtpJf...wRWDhpaBkM65pSgGgJzTVmNj9Fu2GLbX): Token length exception

Hashfile 'private.key' on line 7 (pKQ9XB...QOt2IhwKvfqO2Mf0kYkM4V6DDUlVD642): Token length exception

Hashfile 'private.key' on line 8 (hnOg9X...btNkz/I1yS47JgHERGTp+n2fpAqT+lBf): Token length exception

Hashfile 'private.key' on line 9 (tA8QmC...3UN8J2xEKXConT2rKi+sSwydg2wr/gpe): Token length exception

Hashfile 'private.key' on line 10 (HQL+C6...WRq2LB5kmGUL9AB6YKawXGQ997eg5QqV): Token length exception

Hashfile 'private.key' on line 11 (Y9062m...eTI/MRATLa487YOoN7+0O/D31BlU40Ek): Token length exception

Hashfile 'private.key' on line 12 (kO0AiJ...QNAFJDxJLEC7DXN15pzxiF26GPUAe748): Token length exception

Hashfile 'private.key' on line 13 (pgsFBI...HgIGrigi8PLlNAZEmcB3KO4Jn9fbBU5Z): Token length exception

Hashfile 'private.key' on line 14 (NcN84g...DsOMQi0P3kWHYrwZpr/4KSQV+AVv6Oa9): Token length exception

Hashfile 'private.key' on line 15 (/7U40t...vaJflb51s2RVc04hO149Juq7NTqxfQAL): Token length exception

Hashfile 'private.key' on line 16 (XExfwC...1HoOV+m5u8rGyw4yjIu4SaOyklDyyW1t): Token length exception

Hashfile 'private.key' on line 17 (9XgoG1...ju4XWHgaWPNFa+CzdgNNWqYs7n4xNjmT): Token length exception

Hashfile 'private.key' on line 18 (9dQ4wa...KT/H+u32rmKW7HXzgekHekhxjzt9F5Qc): Token length exception

Hashfile 'private.key' on line 19 (Jx/Mav...K2b3oGi+aaRNuDVVY58CsDm8JnAGAhpL): Token length exception

Hashfile 'private.key' on line 20 (W3bUjP...oduA6At/qhJ1l3Yy7rkzUYdkaIcuPR1Y): Token length exception

Hashfile 'private.key' on line 21 (hKaXAw...FBvPHfCYaU+FL3DqzBOoSTwGM63lE979): Token length exception

Hashfile 'private.key' on line 22 (T6Ewy4...9qHd8IjSv2QPzV9gEIUP9xZrUfgYbjzP): Token length exception

Hashfile 'private.key' on line 23 (qwqSo1...7eMqJgcGaQ/BMqUBfZBaB0zYVUeAhA==): Token length exception

Hashfile 'private.key' on line 24 (-----END RSA PRIVATE KEY-----): Token length exception

No hashes loaded.

Same issue in case using only key body

Code:
U6p58zsHpF/jXjhfmmzBJRu75QqmA/oLVZtgYwh5RbROZx/GUIyDZlXxZnes7EW4

ZaepH6/kgCc8AslKU602uvl6HL0Iikbp/UXXNrhNiMSuglIh9c3TPbwN33RkFKS7

sI7Niz8JWP9kzqekT6RlVX454vHXM3yrSoCV5PS6wPGSQltqCJt62uHmFzpGoONT

9j4F1wGzhVevbrCLadAl/NOs6NSxJQ3wUZz2DWS4u362MSLXcoA19JyKeJtZbch6

Py0Zm87dhuvFsotmJ1tLKLCRedjiQ+syQMr4fOF9PyYRWAgnMOrliSDVQyNqsWo1

YSUsyVWxxLdFxQF789AZzHLyTvJOLkfIhXHO/euasyHTZdXV5wAHCyWXwq722rLE

m9lVHtQwpbmStrh2pU5Z/E2sRENu13rCJmXBYdE5AFmdqP6/ss5Gb+CUTUnm/Bnc

RNCkGaaLEeu8zPoprgebj9xIIPAmSLkg8towBqj4Q+VFciScIeNa5DqKFMBwuF3j

SmjkLxb7jL5//M7Hmhm5Ki/hpr02bbr7GZD5P98VteZwUO+H/hk82Jsaq6v6Q5Eg

loVarhfz4eKV89UZQKaogaOyNKG+EZhDingzx81bZFU5TEyuHG+xTJIEbKhCfYW/

s+sGknE3gkXWrgMAxwcyhlLbeWTsxEYbs+KdcrAn5Y86Ud0JZPT1DUC74qkHul/d

XjhWXj44dMMeuShG0M2URQQ6QKjgATRhQviAzuyKzzoySRJucMGg4btousnSgFsK

Pt+8DArkHIejSoBa3wI33l7NizLrPbEbBXMGHXz/j8hDd5tfGosOGu2JKBbb9mqF

D6FkPPOCrS31vG2jmViSG/CgUjA7YEcVKZBZKGVqiYtbX9lO2FHwRuX4ZN5GJOcL

KNoiCHyOmnVt7Vl6k4wtpDnlLk458URp+xYN+CmBlCkxILRi7Xiuq3PX50n6iPqF

AuhWUD+GooPIZP742qKzQ1vZPhWWA93P0wBEzBipC3lfQMnWaL5JNv0meR71Kves

77tGqo17Q1rjGXJZZr2FSt+u0p/HKpQEEfsP6+RgE9gNTRahfd0UwAGOvTWqic7b

QuNkFyvOvUKsE/OxN1S9YJIdEHafqwJAPWJYsyEAJrbDfZ4vn7hXIcbVoB05YlvN

oF0TKJRa0sXUtVCPwkOmEOL66LaD3m5b1a161GA3VgoTNVujsQwNIw==

Result

Code:
Hashfile 'key_body.txt' on line 1 (U6p58z...VZtgYwh5RbROZx/GUIyDZlXxZnes7EW4): Token length exception

Hashfile 'key_body.txt' on line 2 (ZaepH6.../UXXNrhNiMSuglIh9c3TPbwN33RkFKS7): Token length exception

Hashfile 'key_body.txt' on line 3 (sI7Niz...SoCV5PS6wPGSQltqCJt62uHmFzpGoONT): Token length exception

Hashfile 'key_body.txt' on line 4 (9j4F1w...UZz2DWS4u362MSLXcoA19JyKeJtZbch6): Token length exception

Hashfile 'key_body.txt' on line 5 (Py0Zm8...QMr4fOF9PyYRWAgnMOrliSDVQyNqsWo1): Token length exception

Hashfile 'key_body.txt' on line 6 (YSUsyV...hXHO/euasyHTZdXV5wAHCyWXwq722rLE): Token length exception

Hashfile 'key_body.txt' on line 7 (m9lVHt...JmXBYdE5AFmdqP6/ss5Gb+CUTUnm/Bnc): Token length exception

Hashfile 'key_body.txt' on line 8 (RNCkGa...8towBqj4Q+VFciScIeNa5DqKFMBwuF3j): Token length exception

Hashfile 'key_body.txt' on line 9 (SmjkLx...GZD5P98VteZwUO+H/hk82Jsaq6v6Q5Eg): Token length exception

Hashfile 'key_body.txt' on line 10 (loVarh...ingzx81bZFU5TEyuHG+xTJIEbKhCfYW/): Token length exception

Hashfile 'key_body.txt' on line 11 (s+sGkn...s+KdcrAn5Y86Ud0JZPT1DUC74qkHul/d): Token length exception

Hashfile 'key_body.txt' on line 12 (XjhWXj...QviAzuyKzzoySRJucMGg4btousnSgFsK): Token length exception

Hashfile 'key_body.txt' on line 13 (Pt+8DA...BXMGHXz/j8hDd5tfGosOGu2JKBbb9mqF): Token length exception

Hashfile 'key_body.txt' on line 14 (D6FkPP...KZBZKGVqiYtbX9lO2FHwRuX4ZN5GJOcL): Token length exception

Hashfile 'key_body.txt' on line 15 (KNoiCH...+xYN+CmBlCkxILRi7Xiuq3PX50n6iPqF): Token length exception

Hashfile 'key_body.txt' on line 16 (AuhWUD...0wBEzBipC3lfQMnWaL5JNv0meR71Kves): Token length exception

Hashfile 'key_body.txt' on line 17 (77tGqo...EfsP6+RgE9gNTRahfd0UwAGOvTWqic7b): Token length exception

Hashfile 'key_body.txt' on line 18 (QuNkFy...PWJYsyEAJrbDfZ4vn7hXIcbVoB05YlvN): Token length exception

Hashfile 'key_body.txt' on line 19 (oF0TKJ...6LaD3m5b1a161GA3VgoTNVujsQwNIw==): Token length exception

No hashes loaded.

Any help appreciated

RSA is not supported.

-m 1500 = descrypt is something completely diffrerent.

we actually have a feature request for RSA here: https://github.com/hashcat/hashcat/issues/108 , but it doesn't seem that many hashcat users are very interested in the addition of this algo.

I think jtr supports it, but I'm not sure.

The goal is not to crack RSA, but get private key text contents encrypted with DES algorithm. It's not possible with hashcat?

Ok, thx

jfk

philsmd

jfk

undeath

jfk