diff --git a/Overlord-Server/public/assets/build.js b/Overlord-Server/public/assets/build.js
index 4cf2030..2cad010 100644
--- a/Overlord-Server/public/assets/build.js
+++ b/Overlord-Server/public/assets/build.js
@@ -501,9 +501,38 @@ function applyCryptableMode(enabled) {
     if (upxC) upxC.classList.add("hidden");
   }
 
+  updateShellcodeCheckboxVisibility();
+
   saveFormSettings();
 }
 
+function applyCryptableShellcodeGate() {
+  const cryptableOn = !!document.getElementById("cryptable-mode")?.checked;
+
+  const setGate = (checkboxId, hintId) => {
+    const cb = document.getElementById(checkboxId);
+    const hint = document.getElementById(hintId);
+    if (!cb) return;
+    const label = cb.closest("label");
+    if (cryptableOn) {
+      cb.disabled = false;
+      label?.classList.remove("opacity-40", "pointer-events-none");
+      if (hint) hint.classList.add("hidden");
+    } else {
+      if (cb.checked) {
+        cb.checked = false;
+        cb.dispatchEvent(new Event("change", { bubbles: true }));
+      }
+      cb.disabled = true;
+      label?.classList.add("opacity-40", "pointer-events-none");
+      if (hint) hint.classList.remove("hidden");
+    }
+  };
+
+  setGate("donut-mode", "donut-cryptable-hint");
+  setGate("linux-shellcode-mode", "linux-sc-cryptable-hint");
+}
+
 function updateShellcodeCheckboxVisibility() {
   const selected = Array.from(document.querySelectorAll('input[name="platform"]:checked')).map((el) => el.value);
   const hasWindows = selected.some((p) => p.startsWith("windows-"));
@@ -515,6 +544,8 @@ function updateShellcodeCheckboxVisibility() {
   const linuxScRow = document.getElementById("linux-sc-row");
   if (linuxScRow) linuxScRow.classList.toggle("hidden", !hasLinuxAmd64);
 
+  applyCryptableShellcodeGate();
+
   // SGN is only meaningful when there's shellcode to encode — i.e. Donut or
   // Linux shellcode is enabled on a compatible platform.
   const donutOn = document.getElementById("donut-mode")?.checked && hasWindows;
diff --git a/Overlord-Server/public/build.html b/Overlord-Server/public/build.html
index 0957f0b..64771ce 100644
--- a/Overlord-Server/public/build.html
+++ b/Overlord-Server/public/build.html
@@ -375,7 +375,7 @@
                     </div>
 
                     <div id="donut-row" class="hidden flex flex-col gap-1">
-                      <label class="flex items-center gap-2 p-3 bg-green-900/20 border border-green-500/30 rounded-lg cursor-pointer hover:border-green-400 transition-colors">
+                      <label class="flex items-center gap-2 p-3 bg-green-900/20 border border-green-500/30 rounded-lg cursor-pointer hover:border-green-400 transition-colors" data-shellcode-label>
                         <input type="checkbox" id="donut-mode" name="donut-mode" class="w-4 h-4" />
                         <div class="flex flex-col">
                           <span class="flex items-center gap-2">
@@ -384,6 +384,10 @@
                           <span class="text-xs text-slate-500">Convert Windows PE to position-independent shellcode (.bin) via Donut. PE metadata, icon, bound files, UPX, hide-console, UAC, and critical-process are disabled. Persistence uses a two-pass build.</span>
                         </div>
                       </label>
+                      <div id="donut-cryptable-hint" class="hidden flex items-center gap-2 px-3 py-1.5 rounded bg-purple-900/30 border border-purple-600/40 text-xs text-purple-300">
+                        <i class="fa-solid fa-lock"></i>
+                        <span>Enable <strong>Cryptable Mode</strong> above to use Donut shellcode.</span>
+                      </div>
                       <div id="donut-badge" class="hidden pl-3 border-l-2 border-green-500/40 flex flex-col gap-1">
                         <div class="flex items-center gap-2 px-3 py-1.5 rounded bg-green-900/30 border border-green-600/40 text-xs text-green-300">
                           <i class="fa-solid fa-circle-check"></i>
@@ -402,7 +406,7 @@
                     </div>
 
                     <div id="linux-sc-row" class="hidden flex flex-col gap-1">
-                      <label class="flex items-center gap-2 p-3 bg-cyan-900/20 border border-cyan-500/30 rounded-lg cursor-pointer hover:border-cyan-400 transition-colors">
+                      <label class="flex items-center gap-2 p-3 bg-cyan-900/20 border border-cyan-500/30 rounded-lg cursor-pointer hover:border-cyan-400 transition-colors" data-shellcode-label>
                         <input type="checkbox" id="linux-shellcode-mode" name="linux-shellcode-mode" class="w-4 h-4" />
                         <div class="flex flex-col">
                           <span class="flex items-center gap-2">
@@ -411,6 +415,10 @@
                           <span class="text-xs text-slate-500">Wrap Linux amd64 ELF in a position-independent shellcode stub (.bin) using memfd_create + execveat. Bound files and UPX are disabled. Persistence uses a two-pass build.</span>
                         </div>
                       </label>
+                      <div id="linux-sc-cryptable-hint" class="hidden flex items-center gap-2 px-3 py-1.5 rounded bg-purple-900/30 border border-purple-600/40 text-xs text-purple-300">
+                        <i class="fa-solid fa-lock"></i>
+                        <span>Enable <strong>Cryptable Mode</strong> above to use Linux shellcode.</span>
+                      </div>
                       <div id="linux-sc-badge" class="hidden pl-3 border-l-2 border-cyan-500/40 flex flex-col gap-1">
                         <div class="flex items-center gap-2 px-3 py-1.5 rounded bg-cyan-900/30 border border-cyan-600/40 text-xs text-cyan-300">
                           <i class="fa-solid fa-circle-check"></i>