fix crash when re-installing the dumped ipa using AppSync on palera1n rooltess jb

Author: hackcatml

Sources/mldecrypt/Tool.swift

@@ -105,7 +105,7 @@ func createIpa(bundleId: String) -> Int {
         cleanTempDir()
         return 1
     }
-    // Fakesigning with ldid
+    // signing with ldid
     let _ = task(launchPath: command, arguments: "-S\(entitlementsPath)", "\(fileToReplace)")
 
     /* Extra work */

Sources/mldecryptapp/ContentView.swift

@@ -264,19 +264,19 @@ struct ContentView: View {
 //            os_log("[hackcatml] fileToReplace: %{public}s, replacementFile: %{public}s", fileToReplace, replacementFile)
 
             let command = isRootless() ? "/var/jb/usr/bin/ldid" : "/usr/bin/ldid"
+            // extract the entitlements from the dumped binary. it's same as the original one
             let out = task(launchPath: command, arguments: "-e", replacementFile)
             let entitlementsPath = workPathURL!.path + "/ent.xml"
             let data = out.data(using: .utf8)
             fileMgr.createFile(atPath: entitlementsPath, contents: data)
 
-            // Replace the original binary file with a dumped one
+            // signing the dumped binary with ldid.
             let _ = task(launchPath: command, arguments: "-S\(entitlementsPath)", "\(replacementFile)")
+            // Replace the original binary file with the dumped one
             let copyFileSigPath = documentsPath + ".mldecrypt_copy_done"
             callMldecryptWithOptions(options: ["copy", replacementFile, fileToReplace, "ext"])
             checkFileExistenceAndThen(path: copyFileSigPath, interval: 0.01) {
                 unlink(copyFileSigPath)
-                // signing with ldid
-                let _ = task(launchPath: command, arguments: "-S\(entitlementsPath)", "\(fileToReplace)")
                 completion()
             }
         }