Java JAR Decompiler & Reverse Engineering MCP Server

Decompiles a Java .jar file into a target directory and returns comprehensive decompilation analytics, tree output, and logs.

Lists all Java decompiler files (.jar or executables) currently found in the decompiler folder.

Analyzes an existing directory containing decompiled source code to count Java files, detect decompilation warnings/errors, and produce a directory tree.

Evaluates decompiled outputs (comparing AST structure, line count, compiler warning count), chooses the best candidate with minimal code loss, and structures it into a clean Maven project with pom.xml.

Compiles a Maven project using mvn clean compile, parses any compilation errors into a human-readable format, and writes the log file.

Performs ASM bytecode analysis comparing the original JAR against the recompiled mavenized source, outputting percentage match, business context similarity, and variable readability scores into a text log.

Uses GumTree Spoon AST Diff to parse Java source files, generate AST representations, and detect obfuscated or synthetic variable names (e.g., var0, arg1, single-letter, closure captures).

Copies mavenized source to final output directory, applies obfuscated variable renames with meaningful names, adds changelog comments to modified files, and generates a comprehensive rename log. NEVER modifies business logic.

Runs the complete end-to-end AST de-obfuscation pipeline: copies mavenized_merged_source to mavenized_final_output, compiles, parses AST via GumTree Spoon to find obfuscated vars/methods, applies context-aware renames without changing business logic, verifies compilation, re-scans AST, and outputs l…