diff --git a/electron/services/snsService.ts b/electron/services/snsService.ts
index dbb4765..61abbd2 100644
--- a/electron/services/snsService.ts
+++ b/electron/services/snsService.ts
@@ -1,4 +1,4 @@
-import { wcdbService } from './wcdbService'
+import { wcdbService } from './wcdbService'
 import { ConfigService } from './config'
 import { ContactCacheService } from './contactCacheService'
 import { existsSync, mkdirSync } from 'fs'
@@ -335,9 +335,19 @@ class SnsService {
                                 if (key && String(key).trim().length > 0) {
                                     try {
                                         console.log(`[SnsService] 使用 WASM Isaac64 解密视频... Key: ${key}`)
-                                        const wasmService = WasmService.getInstance()
-                                        // 只需要前 128KB (131072 bytes) 用于解密头部
-                                        const keystream = await wasmService.getKeystream(String(key), 131072)
+                                        const keyText = String(key).trim()
+                                        let keystream: Buffer
+
+                                        try {
+                                            const wasmService = WasmService.getInstance()
+                                            // 只需要前 128KB (131072 bytes) 用于解密头部
+                                            keystream = await wasmService.getKeystream(keyText, 131072)
+                                        } catch (wasmErr) {
+                                            // 打包漏带 wasm 或 wasm 初始化异常时，回退到纯 TS ISAAC64
+                                            console.warn(`[SnsService] WASM 解密不可用，回退 Isaac64: ${wasmErr}`)
+                                            const isaac = new Isaac64(keyText)
+                                            keystream = isaac.generateKeystream(131072)
+                                        }
 
                                         const decryptLen = Math.min(keystream.length, raw.length)
 
diff --git a/package.json b/package.json
index 759e800..282c41c 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   },
   "//": "二改不应改变此处的作者与应用信息",
   "scripts": {
-    "postinstall": "echo 'No native modules to rebuild'",
+    "postinstall": "electron-builder install-app-deps",
     "rebuild": "electron-rebuild",
     "dev": "vite",
     "build": "tsc && vite build && electron-builder",
@@ -107,6 +107,10 @@
       {
         "from": "public/icon.ico",
         "to": "icon.ico"
+      },
+      {
+        "from": "electron/assets/wasm/",
+        "to": "assets/wasm/"
       }
     ],
     "files": [