cpp

extern "C" int test(void* baseaddress,  char* outdir) 
{

#ifdef  __arm__  // for 32-bit ARM
    LOG_INFO(0x100,"arch armeabi ");
#else
    #ifdef __aarch64__ //  64-bit ARM
        LOG_INFO(0x100,"arch aach64 ");
    #else
#error "unsupported architecture "
    #endif
#endif
    // get a list of all encrypt files
    std::vector<std::string> encryptFiles; 
    {
        // print some info for debug
#ifdef __arm__
        LOG_INFO(0x100, "sizeof(int) %d", sizeof(int));
        LOG_INFO(0x100, "sizeof(long) %d", sizeof(long));
        LOG_INFO(0x100, "sizeof(void*) %d", sizeof(void*));
#else
    #ifdef __aarch64__ //  64-bit ARM
        LOG_INFO(0x100, "sizeof(int)   %ld", sizeof(int));
        LOG_INFO(0x100, "sizeof(long)  %ld", sizeof(long));
        LOG_INFO(0x100, "sizeof(void*) %ld", sizeof(void*));
    #else
#error "unsupported architecture "
    #endif
#endif


#ifdef __arm__
        cocos2d::ZipFile* pzipfile = (cocos2d::ZipFile*)*(void**)&(((unsigned char*)baseaddress)[0x608E68]);
#else
    #ifdef __aarch64__ //  64-bit ARM
        cocos2d::ZipFile* pzipfile = (cocos2d::ZipFile*)*(void**)&(((unsigned char*)baseaddress)[0x9223A0]);
    #else
#error "unsupported architecture "
    #endif
#endif

        // ZipFilePrivate *_data;
        // typedef std::map<std::string, struct ZipEntryInfo> FileListContainer;
        //FileListContainer fileList;
#ifdef __arm__
        void* _data = *(void**)(&((unsigned char*)pzipfile)[4]);
        void* fileList = (void*)(&((unsigned char*)_data)[4]);
#else
    #ifdef __aarch64__
        void* _data = *(void**)(&((unsigned char*)pzipfile)[8]);
        void* fileList = (void*)(&((unsigned char*)_data)[8]);
    #else
#error "unsupported architecture "
    #endif
#endif
        typedef std::map<std::string, void*> FileListContainer;
        typedef std::map<std::string, void*>::iterator FileListContainerIterator;
        FileListContainer* filelistContainer= (FileListContainer*) fileList;
        for(FileListContainerIterator it = filelistContainer->begin(); it!=filelistContainer->end(); it ++)
        {
#if TEST_VERION
            bool exit=false;                    
#endif
            const char* fname = it->first.c_str();
            std::string name(fname);
            unsigned long datalen=0l;
            unsigned char* data = pzipfile->getFileData(name, &datalen);
            if(data!=NULL){
                // _frida_hexdump(data, 0x20);
                if(!memcmp(data, "\xfe\xfe\xfe\xfe", 4)){
                    encryptFiles.push_back(it->first);
                    LOG_INFO(0x100,"add  %s %lu ", fname, datalen);
#if TEST_VERION
                    exit=true;                    
#endif
                }
                free(data); 
            }
#if TEST_VERION
            if(exit) break;
#endif
        }
        pzipfile =NULL;
    }
    // try to decrypt files
    {
        cocos2d::CCFileUtilsAndroid* pFileUtils =  (cocos2d::CCFileUtilsAndroid*)cocos2d::CCFileUtils::sharedFileUtils();
        if(pFileUtils==NULL) LOG_ERR(0x100, " can not get pFileUtils ");
        LOG_INFO(0x100, "%p",pFileUtils);
        for(std::vector<std::string>::iterator it = encryptFiles.begin(); it!=encryptFiles.end(); it++)
        {
            const char* fname = it->c_str();
            unsigned long datalen=0l;
            void* data =  pFileUtils->getFileData(fname, "rb", &datalen);
            if(data!=NULL){
                _frida_hexdump(data, 0x20);
                char outputname[0x100];
                snprintf(outputname, 0x100, "%s/%s", outdir, fname);
                char *dname = dirname(outputname);
                // create folder for output file if need
                if(xis_dir(dname)!=1){
                    // create folder
                    //LOG_INFO(0x200," create folder %s for file %s", dname, outputname);
                    mkpath(dname, 0777);
                }
                // write file 
                {
                    LOG_INFO(0x200," %s => %s ", fname, outputname);
                    writeDataToFile(outputname, (unsigned char*)data, datalen);
                }
                free(data);
            }
#if TEST_VERION
            break;
#endif
        }
    }
    LOG_INFO(0x100, "go here , test ok");
    return 0;
}