jar-analyzer · 4ra1n · Aug 1, 2024 · Jul 23, 2024 · Jul 23, 2024 · Jul 23, 2024
diff --git a/native/CMakeLists.txt b/native/CMakeLists.txt
@@ -105,6 +105,91 @@ if (WIN32)
             PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/native_encrypt_asm.obj
     )
 
+elseif (APPLE)
+    MESSAGE("BUILD APPLE")
+
+    enable_language(ASM_NASM)
+
+    add_custom_target(
+            native_encrypt_asm ALL
+            COMMAND nasm -f macho64 ${CMAKE_CURRENT_SOURCE_DIR}/encrypt_linux.asm
+            -o ${CMAKE_CURRENT_BINARY_DIR}/encrypt_linux.obj
+            BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/encrypt_linux.obj
+            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
+
+    add_custom_target(
+            native_decrypt_asm ALL
+            COMMAND nasm -f macho64 ${CMAKE_CURRENT_SOURCE_DIR}/decrypt_linux.asm
+            -o ${CMAKE_CURRENT_BINARY_DIR}/decrypt_linux.obj
+            BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/decrypt_linux.obj
+            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
+
+    MESSAGE("BUILD ENCRYPT DECRYPT ASM FINISH")
+
+    add_library(
+            encryptor SHARED
+            core_en.h
+            jni_encryptor.h
+            jni_encryptor.c
+
+            xxtea_common.c
+            xxtea_common.h
+            xxtea_en.h
+            xxtea_de.h
+            xxtea.c
+    )
+
+    add_library(
+            decrypter SHARED
+            core_de.h
+            start_linux.c
+
+            xxtea_common.c
+            xxtea_common.h
+            xxtea_en.h
+            xxtea_de.h
+            xxtea.c
+    )
+
+    add_dependencies(encryptor native_encrypt_asm)
+
+    add_dependencies(decrypter native_decrypt_asm)
+
+    target_link_libraries(encryptor
+            PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/encrypt_linux.obj
+    )
+
+    target_link_libraries(decrypter
+            PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/decrypt_linux.obj
+    )
+
+    add_executable(
+            xxtea_test
+            xxtea_common.h
+            xxtea_common.c
+            xxtea_en.h
+            xxtea_de.h
+            xxtea.c
+            xxtea_test.c
+    )
+
+    add_executable(
+            decrypt_test
+            core_de.h
+            core_en.h
+            decrypt_test.c
+    )
+
+    target_link_libraries(decrypt_test
+            PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/decrypt_linux.obj
+    )
+
+    target_link_libraries(decrypt_test
+            PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/encrypt_linux.obj
+    )
+
 else ()
     MESSAGE("BUILD LINUX")
 

diff --git a/native/CMakeLists_for_decrypt_win32_x86.txt b/native/CMakeLists_for_decrypt_win32_x86.txt
@@ -0,0 +1,70 @@
+cmake_minimum_required(VERSION 3.25)
+
+################ JNI CONFIG START ################
+
+project(native C)
+
+set(CMAKE_C_STANDARD 11)
+
+# INCLUDE JNI
+
+find_package(JNI REQUIRED)
+
+include_directories(${JNI_INCLUDE_DIRS})
+
+################ JNI CONFIG END ##################
+
+MESSAGE("BUILD WINDOWS")
+
+enable_language(ASM_MASM)
+
+add_custom_target(
+        native_decrypt_asm ALL
+        COMMAND ml /c /Fo${CMAKE_CURRENT_BINARY_DIR}/native_decrypt_asm.obj
+        ${CMAKE_CURRENT_SOURCE_DIR}/decrypt_windows.asm
+        BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/native_decrypt_asm.obj
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+)
+
+add_library(
+        decrypter SHARED
+        core_de.h
+        start_windows.c
+
+        xxtea_common.c
+        xxtea_common.h
+        xxtea_en.h
+        xxtea_de.h
+        xxtea.c
+)
+
+set_property(TARGET native_decrypt_asm PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>"
+)
+
+add_dependencies(decrypter native_decrypt_asm)
+
+target_link_libraries(decrypter
+        PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/native_decrypt_asm.obj
+)
+
+add_executable(
+        xxtea_test
+        xxtea_common.h
+        xxtea_common.c
+        xxtea_en.h
+        xxtea_de.h
+        xxtea.c
+        xxtea_test.c
+)
+
+add_executable(
+        decrypt_test
+        core_de.h
+        core_en.h
+        decrypt_test.c
+)
+
+target_link_libraries(decrypt_test
+        PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/native_decrypt_asm.obj
+)
diff --git a/native/decrypt_macos.asm b/native/decrypt_macos.asm
@@ -0,0 +1,67 @@
+section .text
+global _decrypt
+
+_decrypt:
+    ; init
+    push rbp
+    mov rbp, rsp
+    ; save
+    push rax
+    push rbx
+    push rcx
+    push rdx
+    push rsi
+    push rdi
+    ; char* str -> rdi
+    mov rdi, rdi
+    ; long length -> rsi
+    mov rsi, rsi
+    mov rcx, rsi
+    ; rbx = 0
+    xor rbx, rbx
+    ; rbx = rbx + 4
+    add rbx, 004h
+    ; signature
+    mov rsi, rcx
+    sub rsi, 001h
+    mov al, byte [rdi+rsi]
+    mov ah, byte [rdi+004h]
+    mov byte [rdi+004h], al
+    mov byte [rdi+rsi], ah
+    ; reset
+    xor ah, ah
+    xor al, al
+    xor rsi, rsi
+link_start:
+    ; if ebx >= ecx goto end
+    cmp rbx, rcx
+    jge magic
+    ; al = str[rdi+rbx]
+    mov al, byte [rdi+rbx]
+    ; al = al ^ 22
+    xor al, 022h
+    ; al = al -1
+    sub al, 001h
+    ; al = ~al
+    not al
+    ; al = al ^ 11h
+    xor al, 011h
+    ; al = al + 2
+    add al, 002h
+    ; str[rdi+rbx] = al
+    mov byte [rdi+rbx], al
+    ; ebx ++
+    inc ebx
+    ; loop
+    jmp link_start
+magic:
+    ; recover
+    pop rdi
+    pop rsi
+    pop rdx
+    pop rcx
+    pop rbx
+    pop rax
+    ; recover rbp
+    pop rbp
+    ret
diff --git a/native/decrypt_windows_x86.asm b/native/decrypt_windows_x86.asm
@@ -0,0 +1,54 @@
+.386
+.model flat, c
+option casemap:none
+
+.code
+
+; FUNCTION decrypt
+decrypt PROC USES edi esi ebx, pStr:DWORD, strLength:DWORD
+    ; char* str
+    mov edi, pStr
+    ; long length
+    mov ecx, strLength
+    ; ebx = 0
+    xor ebx, ebx
+    ; ebx = ebx + 4
+    add ebx, 004h
+    ; signature
+    mov esi, ecx
+    sub esi, 001h
+    mov al, byte ptr [edi+esi]
+    mov ah, byte ptr [edi+004h]
+    mov byte ptr [edi+004h], al
+    mov byte ptr [edi+esi], ah
+    ; reset
+    xor ah, ah
+    xor al, al
+    xor esi, esi
+link_start:
+    ; if ebx >= ecx goto end
+    cmp ebx, ecx
+    jge magic
+    ; al = str[edi+ebx]
+    mov al, byte ptr [edi+ebx]
+    ; al = al ^ 22
+    xor al, 022h
+    ; al = al -1
+    sub al, 001h
+    ; al = ~al
+    not al
+    ; al = al ^ 11h
+    xor al, 011h
+    ; al = al + 2
+    add al, 002h
+    ; str[edi+ebx] = al
+    mov byte ptr [edi+ebx], al
+    ; ebx ++
+    inc ebx
+    ; loop
+    jmp link_start
+magic:
+    ret
+decrypt ENDP
+
+END
diff --git a/native/encrypt_macos.asm b/native/encrypt_macos.asm
@@ -0,0 +1,75 @@
+section .text
+global _encrypt
+
+_encrypt:
+    ; init
+    push rbp
+    mov rbp, rsp
+
+    push rax
+    push rbx
+    push rcx
+    push rdx
+    push rsi
+    push rdi
+
+    ; char* str
+    mov rdi, rdi
+    ; long length
+    mov rcx, rsi
+    ; rbx = 0
+    xor rbx, rbx
+link_start:
+    ; if rbx >= rcx goto end
+    cmp rbx, rcx
+    jge magic
+    ; al = str[rdi+rbx]
+    mov al, byte [rdi+rbx]
+    ; al = al - 2
+    sub al, 0x02
+    ; al = al ^ 11h
+    xor al, 0x11
+    ; al = ~al
+    not al
+    ; al = al + 1
+    add al, 0x01
+    ; al = al ^ 22
+    xor al, 0x22
+    ; str[rdi+rbx] = al
+    mov byte [rdi+rbx], al
+    ; ebx ++
+    inc rbx
+    ; loop
+    jmp link_start
+magic:
+    ; magic
+    mov al, 0xca
+    mov byte [rdi+0x00], al
+    mov al, 0xfe
+    mov byte [rdi+0x01], al
+    mov al, 0xba
+    mov byte [rdi+0x02], al
+    mov al, 0xbe
+    mov byte [rdi+0x03], al
+    ; signature
+    mov rsi, rcx
+    sub rsi, 0x01
+    mov al, byte [rdi+rsi]
+    mov ah, byte [rdi+0x04]
+    mov byte [rdi+0x04], al
+    mov byte [rdi+rsi], ah
+    ; reset
+    xor ah, ah
+    xor al, al
+    xor rsi, rsi
+
+    pop rdi
+    pop rsi
+    pop rdx
+    pop rcx
+    pop rbx
+    pop rax
+
+    ; recover rbp
+    pop rbp
+    ret