1 files changed, 108 insertions, 0 deletions
diff --git a/foreign/client_handling/lazagne/config/DPAPI/credfile.py b/foreign/client_handling/lazagne/config/DPAPI/credfile.py
new file mode 100644
index 0000000..98bda22
--- /dev/null
+++ b/foreign/client_handling/lazagne/config/DPAPI/credfile.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Code based from these two awesome projects: 
+- DPAPICK 	: https://bitbucket.org/jmichel/dpapick
+- DPAPILAB 	: https://github.com/dfirfpi/dpapilab
+"""
+
+from .blob import DPAPIBlob
+from .eater import DataStruct
+
+
+class CredentialDecryptedHeader(DataStruct):
+    """
+    Header of the structure returned once the blob has been decrypted
+    Header of the CredentialDecrypted class
+    """
+    def __init__(self, raw=None):
+        self.total_size = None
+        self.unknown1 = None
+        self.unknown2 = None
+        self.unknown3 = None
+        self.last_update = None
+        self.unknown4 = None
+        self.unk_type = None
+        self.unk_blocks = None
+        self.unknown5 = None
+        self.unknown6 = None
+        DataStruct.__init__(self, raw)
+
+    def parse(self, data):
+        self.total_size = data.eat("L")
+        self.unknown1 = data.eat("L")
+        self.unknown2 = data.eat("L")
+        self.unknown3 = data.eat("L")
+        self.last_update = data.eat("Q")
+        self.unknown4 = data.eat("L")
+        self.unk_type = data.eat("L")
+        self.unk_blocks = data.eat("L")
+        self.unknown5 = data.eat("L")
+        self.unknown6 = data.eat("L")
+
+
+class CredentialDecrypted(DataStruct):
+    """
+    Structure returned once the blob has been decrypted
+    """
+    def __init__(self, raw=None):
+        self.header_size = None
+        self.header = None
+        self.domain = None
+        self.unk_string1 = None
+        self.unk_string2 = None
+        self.unk_string3 = None
+        self.username = None
+        self.password = None
+        DataStruct.__init__(self, raw)
+
+    def parse(self, data):
+        self.header_size = data.eat("L")
+        if self.header_size > 0:
+            self.header = CredentialDecryptedHeader()
+            self.header.parse(data.eat_sub(self.header_size - 4))
+        self.domain = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+        self.unk_string1 = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+        self.unk_string2 = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+        self.unk_string3 = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+        self.username = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+        self.password = data.eat_length_and_string("L").decode("UTF-16LE").encode("utf-8")  # Unicode
+
+
+class CredFile(DataStruct):
+    """
+    Decrypt Credentials Files stored on ...\\Microsoft\\Credentials\\...
+    """
+    def __init__(self, raw=None):
+        self.unknown1 = None
+        self.blob_size = None
+        self.unknown2 = None
+        self.blob = None
+        DataStruct.__init__(self, raw)
+
+    def parse(self, data):
+        self.unknown1 = data.eat("L")
+        self.blob_size = data.eat("L")
+        self.unknown2 = data.eat("L")
+        if self.blob_size > 0:
+            self.blob = DPAPIBlob()
+            self.blob.parse(data.eat_sub(self.blob_size))
+
+    def decrypt(self, mkp, credfile):
+        ok, msg = self.blob.decrypt_encrypted_blob(mkp=mkp)
+        if ok:
+            cred_dec = CredentialDecrypted(msg)
+            if cred_dec.header.unk_type == 3:
+                return True, {
+                    'File': credfile,
+                    'Domain': cred_dec.domain,
+                    'Username': cred_dec.username,
+                    'Password': cred_dec.password,
+                }
+            elif cred_dec.header.unk_type == 2:
+                return False, 'System credential type'
+            else:
+                return False, 'Unknown CREDENTIAL type, please report.\nCreds: {creds}'.format(creds=cred_dec)
+        else:
+            return ok, msg