![]() Also, given the low information content per line in smali, the possibility always exists that a diff patch applies cleanly but at the wrong place, causing disaster.įor these reasons, Needle's author chose not to use diff patching and instead hard-code search and replace actions in a Python script crafted specifically to apply one particular patch. The bytecode output of javac and dx can completely change as a result of even minor touches to Java source code, preventing the successful application of smali patches across source changes. Unfortunately applying diff patches to smali is a very brittle affair. ![]() Under the hood, Needle works by disassembling the complete framework.jar via baksmali, editing the resulting text files, then reassembling them via smali. (See also: Signature Spoofing Checker.) What is wrong with Needle? (*) My lawyers insisted that I disclose that I am the author of DexPatcher here. This is a replacement for Needle (and its fork Tingle) based on the thoroughly awesome and completely ignored DexPatcher(*) instead of smali. Haystack Signature Spoofing Patcher for Android
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