jadx: Dex to Java decompiler 是一款用于将 Android APK 文件反编译为可读的 Java 源代码的开源工具。它可以帮助开发人员和安全研究人员分析和理解 Android 应用程序的内部结构、逻辑和实现细节。 可以使用 brew install jadx 来安装

feature

以下是 jadx 工具的一些主要特点和功能:

• 反编译 APK 文件: jadx 可以将 Android APK 文件转换为可读的 Java 源代码, 并提取出应用程序中的类、方法、字段等信息

• 可视化展示: jadx 提供了一个用户友好的图形界面, 可以以树状结构形式展示应用程序的包、类、方法等元素, 使得代码浏览和分析更加方便

• 跨平台支持: jadx 支持在多个操作系统上运行, 包括 Windows、Linux 和 macOS, 可以在不同环境中使用

• 支持最新的 Android 版本: jadx 对 Android 的最新版本和特性提供了支持, 可以处理使用较新 API 级别构建的应用程序

• 反混淆支持: 对于已经进行了代码混淆的应用程序, jadx 可以尝试还原原始的类、方法和字段名称, 以便更好地理解代码

• 代码导航和搜索: jadx 提供了代码导航和搜索功能, 可以快速定位特定的类、方法、字段或关键字, 便于快速浏览和分析代码

• 导出功能: jadx 允许将反编译的代码导出为 Java 源代码或 Smali 格式, 方便进一步的分析和处理

总体而言, jadx 是一个功能强大且易于使用的工具, 可以帮助开发人员和安全研究人员对 Android 应用程序进行逆向工程和代码分析。它可以提供有关应用程序内部实现的深入洞察, 并帮助解决问题、修复错误或进行安全评估

help

-> % jadx -h

jadx - dex to java decompiler, version: 1.5.0

usage: jadx [command] [options] <input files> (.apk, .dex, .jar, .class, .smali, .zip, .aar, .arsc, .aab, .xapk, .jadx.kts)
commands (use '<command> --help' for command options):
  plugins      - manage jadx plugins

options:
  -d, --output-dir                    - output directory
  -ds, --output-dir-src               - output directory for sources
  -dr, --output-dir-res               - output directory for resources
  -r, --no-res                        - do not decode resources
  -s, --no-src                        - do not decompile source code
  --single-class                      - decompile a single class, full name, raw or alias
  --single-class-output               - file or dir for write if decompile a single class
  --output-format                     - can be 'java' or 'json', default: java
  -e, --export-gradle                 - save as android gradle project
  -j, --threads-count                 - processing threads count, default: 3
  -m, --decompilation-mode            - code output mode:
                                         'auto' - trying best options (default)
                                         'restructure' - restore code structure (normal java code)
                                         'simple' - simplified instructions (linear, with goto's)
                                         'fallback' - raw instructions without modifications
  --show-bad-code                     - show inconsistent code (incorrectly decompiled)
  --no-xml-pretty-print               - do not prettify XML
  --no-imports                        - disable use of imports, always write entire package name
  --no-debug-info                     - disable debug info parsing and processing
  --add-debug-lines                   - add comments with debug line numbers if available
  --no-inline-anonymous               - disable anonymous classes inline
  --no-inline-methods                 - disable methods inline
  --no-move-inner-classes             - disable move inner classes into parent
  --no-inline-kotlin-lambda           - disable inline for Kotlin lambdas
  --no-finally                        - don't extract finally block
  --no-replace-consts                 - don't replace constant value with matching constant field
  --escape-unicode                    - escape non latin characters in strings (with \u)
  --respect-bytecode-access-modifiers - don't change original access modifiers
  --mappings-path                     - deobfuscation mappings file or directory. Allowed formats: Tiny and Tiny v2 (both '.tiny'), Enigma (.mapping) or Enigma directory
  --mappings-mode                     - set mode for handling the deobfuscation mapping file:
                                         'read' - just read, user can always save manually (default)
                                         'read-and-autosave-every-change' - read and autosave after every change
                                         'read-and-autosave-before-closing' - read and autosave before exiting the app or closing the project
                                         'ignore' - don't read or save (can be used to skip loading mapping files referenced in the project file)
  --deobf                             - activate deobfuscation
  --deobf-min                         - min length of name, renamed if shorter, default: 3
  --deobf-max                         - max length of name, renamed if longer, default: 64
  --deobf-whitelist                   - space separated list of classes (full name) and packages (ends with '.*') to exclude from deobfuscation, default: android.support.v4.* android.support.v7.* android.support.v4.os.* android.support.annotation.Px androidx.core.os.* androidx.annotation.Px
  --deobf-cfg-file                    - deobfuscation mappings file used for JADX auto-generated names (in the JOBF file format), default: same dir and name as input file with '.jobf' extension
  --deobf-cfg-file-mode               - set mode for handling the JADX auto-generated names' deobfuscation map file:
                                         'read' - read if found, don't save (default)
                                         'read-or-save' - read if found, save otherwise (don't overwrite)
                                         'overwrite' - don't read, always save
                                         'ignore' - don't read and don't save
  --deobf-use-sourcename              - use source file name as class name alias
  --deobf-res-name-source             - better name source for resources:
                                         'auto' - automatically select best name (default)
                                         'resources' - use resources names
                                         'code' - use R class fields names
  --use-kotlin-methods-for-var-names  - use kotlin intrinsic methods to rename variables, values: disable, apply, apply-and-hide, default: apply
  --rename-flags                      - fix options (comma-separated list of):
                                         'case' - fix case sensitivity issues (according to --fs-case-sensitive option),
                                         'valid' - rename java identifiers to make them valid,
                                         'printable' - remove non-printable chars from identifiers,
                                        or single 'none' - to disable all renames
                                        or single 'all' - to enable all (default)
  --integer-format                    - how integers are displayed:
                                         'auto' - automatically select (default)
                                         'decimal' - use decimal
                                         'hexadecimal' - use hexadecimal
  --fs-case-sensitive                 - treat filesystem as case sensitive, false by default
  --cfg                               - save methods control flow graph to dot file
  --raw-cfg                           - save methods control flow graph (use raw instructions)
  -f, --fallback                      - set '--decompilation-mode' to 'fallback' (deprecated)
  --use-dx                            - use dx/d8 to convert java bytecode
  --comments-level                    - set code comments level, values: error, warn, info, debug, user-only, none, default: info
  --log-level                         - set log level, values: quiet, progress, error, warn, info, debug, default: progress
  -v, --verbose                       - verbose output (set --log-level to DEBUG)
  -q, --quiet                         - turn off output (set --log-level to QUIET)
  --version                           - print jadx version
  -h, --help                          - print this help

Plugin options (-P<name>=<value>):
 1) dex-input: Load .dex and .apk files
    - dex-input.verify-checksum       - verify dex file checksum before load, values: [yes, no], default: yes
 2) java-convert: Convert .class, .jar and .aar files to dex
    - java-convert.mode               - convert mode, values: [dx, d8, both], default: both
    - java-convert.d8-desugar         - use desugar in d8, values: [yes, no], default: no
 3) kotlin-metadata: Use kotlin.Metadata annotation for code generation
    - kotlin-metadata.class-alias     - rename class alias, values: [yes, no], default: yes
    - kotlin-metadata.method-args     - rename function arguments, values: [yes, no], default: yes
    - kotlin-metadata.fields          - rename fields, values: [yes, no], default: yes
    - kotlin-metadata.companion       - rename companion object, values: [yes, no], default: yes
    - kotlin-metadata.data-class      - add data class modifier, values: [yes, no], default: yes
    - kotlin-metadata.to-string       - rename fields using toString, values: [yes, no], default: yes
    - kotlin-metadata.getters         - rename simple getters to field names, values: [yes, no], default: yes
 4) rename-mappings: various mappings support
    - rename-mappings.format          - mapping format, values: [AUTO, TINY_FILE, TINY_2_FILE, ENIGMA_FILE, ENIGMA_DIR, SRG_FILE, XSRG_FILE, JAM_FILE, CSRG_FILE, TSRG_FILE, TSRG_2_FILE, PROGUARD_FILE, RECAF_SIMPLE_FILE, JOBF_FILE], default: AUTO
    - rename-mappings.invert          - invert mapping on load, values: [yes, no], default: no

Environment variables:
  JADX_DISABLE_XML_SECURITY - set to 'true' to disable all security checks for XML files
  JADX_DISABLE_ZIP_SECURITY - set to 'true' to disable all security checks for zip files
  JADX_ZIP_MAX_ENTRIES_COUNT - maximum allowed number of entries in zip files (default: 100 000)
  JADX_TMP_DIR - custom temp directory, using system by default

Examples:
  jadx -d out classes.dex
  jadx --rename-flags "none" classes.dex
  jadx --rename-flags "valid, printable" classes.dex
  jadx --log-level ERROR app.apk
  jadx -Pdex-input.verify-checksum=no app.apk

jadx-gui

link

• jadx (opens new window)