diff --git a/cscg25/rev/intro2/rev2.bndb b/cscg25/rev/intro2/rev2.bndb
index 28c2d7f..604ff60 100644
Binary files a/cscg25/rev/intro2/rev2.bndb and b/cscg25/rev/intro2/rev2.bndb differ
diff --git a/cscg25/rev/intro3/genPassword.py b/cscg25/rev/intro3/genPassword.py
new file mode 100644
index 0000000..79e0331
--- /dev/null
+++ b/cscg25/rev/intro3/genPassword.py
@@ -0,0 +1,13 @@
+password = b"b9yPw:MwqcoHuFz^r-o*{>I\020Y"
+
+def reverse_transformation(input_bytes):
+    input_bytes = bytearray(input_bytes)  # Convert to mutable bytearray
+    for i in range(len(input_bytes)):
+        input_bytes[i] = (input_bytes[i] + 2) % 256      # Step 1: Add 2
+        input_bytes[i] ^= (i + 0xa)                      # Step 2: XOR with (i + 0xa)
+    return bytes(input_bytes)  # Convert back to bytes
+
+real_password = reverse_transformation(password)
+
+with open("password.bin", "wb") as f:
+    f.write(real_password)
diff --git a/cscg25/rev/intro3/password.bin b/cscg25/rev/intro3/password.bin
new file mode 100644
index 0000000..8ec4572
--- /dev/null
+++ b/cscg25/rev/intro3/password.bin
@@ -0,0 +1 @@
+n0w_w3_have_a_dyn4m1c_k3y
\ No newline at end of file