Apple iOS backups

Summary

  • Hash algorithms used: SHA-1
  • Encryption algorithms used: AES
  • Complexity of attack: High
  • Password recovery speed: thousands (CPUs), tens of thousands (GPUs)
  • CPU optimizations: MMX, SSE2, AVX, XOP
  • NVIDIA GPUs support: G80+ (GT8600 and higher)
  • AMD GPUs support: RV710+ (HD4350 and higher)

General information

Apple iOS 4.x — 10.2+ backups using PBKDF2 (RFC 2898) with 10000 iterations for key derivation. Key container file contains several AES "wrapped" keys (RFC 3394) used for further encryption. Backups by default placed at:

%APPDATA%\Apple Computer\MobileSync\Backup\
directory. For Windows 7 this means:
\Users\(username)\AppData\Roaming\Apple Computer\MobileSync\Backup\
For Windows XP:
\Documents and Settings\(username)\Application Data\Apple Computer\MobileSync\Backup\
Each device having separate subdirectory and manifest.plist file inside it contains encrypted key container.

Attack settings

Standard attacks (brute-force with optional mask, dictionary based) are applicable, no specific settings required.

Additional information

Apple iOS 3.x backups are not supported by this software (yet).

 
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