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Spargerea parolelor folosind GPU




                                   Radu Potop
●   Acum câteva zile (17.06.2011) grupul LulzSec a publicat o
    arhivă cu peste 62000 de parole și emaluri din diverse surse
    (forumuri, conturi de email, etc)
●   http://lulzsecurity.com/releases/62000_random_logins.txt
O analiză asupra acestora:



●   Lungimea medie a unei parole este de 7 caractere




                                                       [1]
O analiză asupra acestora:



●   Cea mai comună parolă este 123456, cu 569 de repetări

●   Username-ul, cu 789 repetări

●   Urmat de:

    ●   123456789 / 184 repetări
    ●   password / 132 reperări
    ●   altele: romance, mystery, tigger, shadow
    ●   aleatoare: 123qwe, asdf1234
GPU computing:




●   Calcule generale pe plăci grafice (GPU)

●   Procesoarele grafice sunt puternic paralele

●   Putem rula același cod pe o mulțime de thread-uri cu date de
    intrare diferite
Brute-force attack folosind GPU:



●   ighashgpu dezvoltat de Ivan Golubev [2]

●   Suportă brute-force attacks pe hash-uri de parole:

    ●   MD5, SHA1
    ●   NTLM (Windows)
    ●   MSSQL / MySQL 5 / Oracle 11g
    ●   vBulletin forums, etc.
●   Îl vom compara cu Cain&Abel, care folosește CPU
Brute-force attack folosind GPU:



●   Pentru parole de 5 caractere, litere mari și mici, cifre:

    ●   CPU: 24 secunde, la o rată de 10 mil parole / secundă
    ●   GPU: <1 secundă, la o rată de 3.3 mld parole / secundă [3]



●   Parole de 6 caractere:

    ●   CPU: 1h 30 min
    ●   GPU: 17 secunde
Brute-force attack folosind GPU:



●   Parole de 7 caractere:

    ●   CPU: 4 zile
    ●   GPU: 17 min, 30 sec.



●   Parole de 8 caractere:

    ●   CPU: 1 an
    ●   GPU: 18 h, 30 min.
Brute-force attack folosind GPU:



●   Parole de 9 caractere:

    ●   CPU: 43 ani
    ●   GPU: 48 zile



●   Parolă de 10 caractere:

    ●   CPU: ?
    ●   GPU: 8 ani, 70 zile
Brute-force attack folosind GPU:



    Parole care conțin punctuație, litere mari și mici, cifre:

●   Parole de 7 caractere:

    ●   CPU: 75 zile
    ●   GPU: 7h
●   Parole de 8 caractere:

    ●   CPU: 19 ani
    ●   GPU: 26 zile
Brute-force attack folosind GPU:



    Parole care conțin punctuație, litere mari și mici, cifre:

●   Parole de 9 caractere:

    ●   CPU: ?
    ●   GPU: 9 ani
Metode de prevenire:



●   Parole >= 10 caractere

●   Punctuație, litere mari și mici, cifre

●   Parole unice pt fiecare login (de ex. user@host:fixed)



    Pentru stocare în baze de date:

●   Salted passwords
Mulțumesc




     Referințe:

1)   http://www.codelord.net/2011/06/18/statistics-of-62k-passwords/

2)   http://www.golubev.com/blog/

3)   http://mytechencounters.wordpress.com/2011/04/03/gpu-password-cracking-crack-a-windows-password-using-a-graphic-card/

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Spargerea parolelor folosind GPU

  • 2. Acum câteva zile (17.06.2011) grupul LulzSec a publicat o arhivă cu peste 62000 de parole și emaluri din diverse surse (forumuri, conturi de email, etc) ● http://lulzsecurity.com/releases/62000_random_logins.txt
  • 3. O analiză asupra acestora: ● Lungimea medie a unei parole este de 7 caractere [1]
  • 4. O analiză asupra acestora: ● Cea mai comună parolă este 123456, cu 569 de repetări ● Username-ul, cu 789 repetări ● Urmat de: ● 123456789 / 184 repetări ● password / 132 reperări ● altele: romance, mystery, tigger, shadow ● aleatoare: 123qwe, asdf1234
  • 5. GPU computing: ● Calcule generale pe plăci grafice (GPU) ● Procesoarele grafice sunt puternic paralele ● Putem rula același cod pe o mulțime de thread-uri cu date de intrare diferite
  • 6. Brute-force attack folosind GPU: ● ighashgpu dezvoltat de Ivan Golubev [2] ● Suportă brute-force attacks pe hash-uri de parole: ● MD5, SHA1 ● NTLM (Windows) ● MSSQL / MySQL 5 / Oracle 11g ● vBulletin forums, etc. ● Îl vom compara cu Cain&Abel, care folosește CPU
  • 7. Brute-force attack folosind GPU: ● Pentru parole de 5 caractere, litere mari și mici, cifre: ● CPU: 24 secunde, la o rată de 10 mil parole / secundă ● GPU: <1 secundă, la o rată de 3.3 mld parole / secundă [3] ● Parole de 6 caractere: ● CPU: 1h 30 min ● GPU: 17 secunde
  • 8. Brute-force attack folosind GPU: ● Parole de 7 caractere: ● CPU: 4 zile ● GPU: 17 min, 30 sec. ● Parole de 8 caractere: ● CPU: 1 an ● GPU: 18 h, 30 min.
  • 9. Brute-force attack folosind GPU: ● Parole de 9 caractere: ● CPU: 43 ani ● GPU: 48 zile ● Parolă de 10 caractere: ● CPU: ? ● GPU: 8 ani, 70 zile
  • 10. Brute-force attack folosind GPU: Parole care conțin punctuație, litere mari și mici, cifre: ● Parole de 7 caractere: ● CPU: 75 zile ● GPU: 7h ● Parole de 8 caractere: ● CPU: 19 ani ● GPU: 26 zile
  • 11. Brute-force attack folosind GPU: Parole care conțin punctuație, litere mari și mici, cifre: ● Parole de 9 caractere: ● CPU: ? ● GPU: 9 ani
  • 12. Metode de prevenire: ● Parole >= 10 caractere ● Punctuație, litere mari și mici, cifre ● Parole unice pt fiecare login (de ex. user@host:fixed) Pentru stocare în baze de date: ● Salted passwords
  • 13. Mulțumesc Referințe: 1) http://www.codelord.net/2011/06/18/statistics-of-62k-passwords/ 2) http://www.golubev.com/blog/ 3) http://mytechencounters.wordpress.com/2011/04/03/gpu-password-cracking-crack-a-windows-password-using-a-graphic-card/