Create extract_user.py

extract_user.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+import sys, hashlib
+
+def decrypt_password(user, pass_enc):
+    key = hashlib.md5(user + b"283i4jfkai3389").digest()
+
+    passw = ""
+    for i in range(0, len(pass_enc)):
+        passw += chr(pass_enc[i] ^ key[i % len(key)])
+
+    return passw.split("\x00")[0]
+
+def extract_user_pass_from_entry(entry):
+    user_data = entry.split(b"\x01\x00\x00\x21")[1]
+    pass_data = entry.split(b"\x11\x00\x00\x21")[1]
+
+    user_len = user_data[0]
+    pass_len = pass_data[0]
+
+    username = user_data[1:1 + user_len]
+    password = pass_data[1:1 + pass_len]
+
+    return username, password
+
+def get_pair(data):
+
+    user_list = []
+
+    entries = data.split(b"M2")[1:]
+    for entry in entries:
+        try:
+            user, pass_encrypted = extract_user_pass_from_entry(entry)
+        except:
+            continue
+
+        pass_plain = decrypt_password(user, pass_encrypted)
+        user  = user.decode("ascii")
+
+        user_list.append((user, pass_plain))
+
+    return user_list
+
+def dump(data):
+    user_pass = get_pair(data)
+    for u, p in user_pass:
+        print("User:", u)
+        print("Pass:", p)
+        print()
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        if sys.argv[1] == "-":
+            user_file = sys.stdin.buffer.read()
+        else:
+            user_file = open(sys.argv[1], "rb").read()
+        dump(user_file)
+
+    else:
+        print("Usage:")
+        print("\tFrom file: \t", sys.argv[0], "user.dat")
+        print("\tFrom stdin:\t", sys.argv[0], "-")