Apktool Keep Original Signature. However, -c will use the original AndroidManifest. Therefore

However, -c will use the original AndroidManifest. Therefore the only way to create an identical signature is to be in possession of the private key used to sign the APK. You can use -c / --copy-original to retain these signatures. apk" One critical aspect of APK files is their digital signature, which ensures the authenticity and integrity of the application. Apktool will do its best to rip apart the resources and manifest for easy inspection. May 17, 2012 · I don't want to use APK Multi-Tools or APK_Manager or whatever. . Put back APK Sig Block 42PK block in APK using Apktool The problem with unsigned APK: When making changes in an APK using ordinary zip utility like Winrar, it removes the (APK Sig Block 42PK) completely, breaking Google login on Android 9 and above because Android 9 expect signature scheme v2, v3, v4 (APK Sig Block 42PK). This is explained in the topics mentioned above in the apktool documentation. I want to know exactly what those tools are doing in order to recompile the system apk while keeping the original signature. Nov 29, 2025 · Conclusion Signing a rebuilt APK with ApkTool is straightforward once you follow these steps: rebuild with ApkTool, locate your original keystore, sign with jarsigner, zipalign, and verify. xml and is only capable of working with the original APK signature v1 scheme. Sep 3, 2023 · The APK signature is a cryptographic signature without known vulnerability. This means you would need to get the private key of the app developer which only the app develoe has or may be also Google in their app signing HSM. Nov 28, 2019 · If you use the option "--copy-original" when compiling your APK, it will copy the original signature. Using the original keystore ensures your app retains its identity for updates, while modern signing algorithms keep it compatible with new Android versions. Analyze Not interested in rebuilding? Just attach -m to any disassemble command. What I initially did apktool d "%~dpnx1. When using reverse engineering tools like APKTool to decode, modify, and recompile APKs, understanding how APKTool handles APK file signatures is essential.

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