initial code for dumping imessages in a reasonable format

dump-imessages/iphone-dataprotection/python_scripts/keychain/managedconfiguration.py

@@ -0,0 +1,27 @@
+"""
+0
+1:MCSHA256DigestWithSalt
+2:SecKeyFromPassphraseDataHMACSHA1
+"""
+from crypto.PBKDF2 import PBKDF2
+import plistlib
+import hashlib
+
+SALT1 = "F92F024CA2CB9754".decode("hex")
+
+hashMethods={
+    1: (lambda p,salt:hashlib.sha256(SALT1 + p)),
+    2: (lambda p,salt:PBKDF2(p, salt, iterations=1000).read(20))
+    }
+
+def bruteforce_old_pass(h):
+    salt = h["salt"].data
+    hash = h["hash"].data
+    f = hashMethods.get(h["hashMethod"])
+
+    if f:
+        print "Bruteforcing hash %s (4 digits)" % hash.encode("hex")
+        for i in xrange(10000):
+            p = "%04d" % (i % 10000)
+            if f(p,salt) == hash:
+                return p