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Add ADX/HCA key [Detective Conan Runner (Android)]
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@ -231,6 +231,9 @@ static const adxkey_info adxkey9_list[] = {
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/* Nogizaka46 Rhythm Festival (Android) */
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{0x2378,0x5511,0x0201, NULL,5613126134333697}, // 0013F11BC5510101
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/* Detective Conan Runner / Case Closed Runner (Android) */
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{0x0613,0x0e3d,0x6dff, NULL,1175268187653273344}, // 104f643098e3f700
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};
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static const int adxkey8_list_count = sizeof(adxkey8_list) / sizeof(adxkey8_list[0]);
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@ -2,8 +2,14 @@
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#include "hca_keys.h"
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#include "../coding/coding.h"
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//#define HCA_BRUTEFORCE
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#ifdef HCA_BRUTEFORCE
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static void bruteforce_hca_key(STREAMFILE* sf, hca_codec_data* hca_data, unsigned long long* out_keycode, uint16_t subkey);
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#endif
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static void find_hca_key(hca_codec_data * hca_data, unsigned long long * out_keycode, uint16_t subkey);
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/* CRI HCA - streamed audio from CRI ADX2/Atom middleware */
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VGMSTREAM * init_vgmstream_hca(STREAMFILE *streamFile) {
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return init_vgmstream_hca_subkey(streamFile, 0x0000);
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}
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@ -41,6 +47,11 @@ VGMSTREAM * init_vgmstream_hca_subkey(STREAMFILE *streamFile, uint16_t subkey) {
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uint16_t file_sub = (uint16_t)get_16bitBE(keybuf+0x08);
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keycode = file_key * ( ((uint64_t)file_sub << 16u) | ((uint16_t)~file_sub + 2u) );
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}
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#ifdef HCA_BRUTEFORCE
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else if (1) {
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bruteforce_hca_key(streamFile, hca_data, &keycode, subkey);
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}
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#endif
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else {
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find_hca_key(hca_data, &keycode, subkey);
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}
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@ -127,41 +138,94 @@ static inline void test_key(hca_codec_data * hca_data, uint64_t key, uint16_t su
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}
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}
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/* Try to find the decryption key from a list. */
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static void find_hca_key(hca_codec_data * hca_data, unsigned long long * out_keycode, uint16_t subkey) {
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/* try to find the decryption key from a list. */
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static void find_hca_key(hca_codec_data* hca_data, unsigned long long* out_keycode, uint16_t subkey) {
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const size_t keys_length = sizeof(hcakey_list) / sizeof(hcakey_info);
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int best_score = -1;
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int i,j;
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*out_keycode = 0xCC55463930DBE1AB; /* defaults to PSO2 key, most common */
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/* find a candidate key */
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for (i = 0; i < keys_length; i++) {
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uint64_t key = hcakey_list[i].key;
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size_t subkeys_size = hcakey_list[i].subkeys_size;
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const uint16_t *subkeys = hcakey_list[i].subkeys;
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/* try once with external subkey, if any */
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test_key(hca_data, key, subkey, &best_score, out_keycode);
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if (best_score == 1) /* best possible score */
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if (best_score == 1)
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goto done;
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/* try subkey list */
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if (subkeys_size > 0 && subkey == 0) {
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for (j = 0; j < subkeys_size; j++) {
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test_key(hca_data, key, subkeys[j], &best_score, out_keycode);
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if (best_score == 1) /* best possible score */
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if (best_score == 1)
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goto done;
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}
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}
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}
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done:
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//;VGM_LOG("HCA: best key=%08x%08x (score=%i)\n",
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// (uint32_t)((*out_keycode >> 32) & 0xFFFFFFFF), (uint32_t)(*out_keycode & 0xFFFFFFFF), best_score);
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VGM_ASSERT(best_score > 1, "HCA: best key=%08x%08x (score=%i)\n",
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(uint32_t)((*out_keycode >> 32) & 0xFFFFFFFF), (uint32_t)(*out_keycode & 0xFFFFFFFF), best_score);
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VGM_ASSERT(best_score < 0, "HCA: key not found\n");
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}
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#ifdef HCA_BRUTEFORCE
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/* Bruteforce binary keys in executables and similar files, mainly for some mobile games.
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* Kinda slow but acceptable for ~20MB exes, not very optimized. Unity usually has keys
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* in plaintext (inside levelX or other base files) instead though. */
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static void bruteforce_hca_key(STREAMFILE* sf, hca_codec_data* hca_data, unsigned long long* out_keycode, uint16_t subkey) {
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STREAMFILE* sf_keys = NULL;
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uint8_t* buf = NULL;
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int best_score = -1;
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off_t keys_size, bytes;
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int i, pos;
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VGM_LOG("HCA: test keys\n");
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*out_keycode = 0;
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/* load whole file in memory for performance (exes with keys shouldn't be too big) */
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sf_keys = open_streamfile_by_filename(sf, "keys.bin");
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if (!sf_keys) goto done;
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keys_size = get_streamfile_size(sf_keys);
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buf = malloc(keys_size);
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if (!buf) goto done;
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bytes = read_streamfile(buf, 0, keys_size, sf_keys);
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if (bytes != keys_size) goto done;
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pos = 0;
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while (pos < keys_size - 4) {
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uint64_t key;
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/* keys are usually u32le lower, u32le upper (u64le) but other orders may exist */
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key = ((uint64_t)get_u32le(buf + pos + 0x00) << 0 ) | ((uint64_t)get_u32le(buf + pos + 0x04) << 32);
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//key = ((uint64_t)get_u32le(buf + pos + 0x00) << 32) | ((uint64_t)get_u32le(buf + pos + 0x04) << 0);
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//key = ((uint64_t)get_u32be(buf + pos + 0x00) << 0 ) | ((uint64_t)get_u32be(buf + pos + 0x04) << 32);
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//key = ((uint64_t)get_u32be(buf + pos + 0x00) << 32) | ((uint64_t)get_u32be(buf + pos + 0x04) << 0);
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if (key == 0)
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continue;
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test_key(hca_data, keys[i], subkey, &best_score, out_keycode);
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if (best_score == 1)
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goto done;
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VGM_ASSERT(pos % 0x100000 == 0, "HCA: pos %x...\n", pos);
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/* observed files have aligned keys in the .text section, change if needed */
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pos += 0x04; //pos++;
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}
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done:
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VGM_ASSERT(best_score > 0, "HCA: best key=%08x%08x (score=%i)\n",
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(uint32_t)((*out_keycode >> 32) & 0xFFFFFFFF), (uint32_t)(*out_keycode & 0xFFFFFFFF), best_score);
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VGM_ASSERT(best_score < 0, "HCA: key not found\n");
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close_streamfile(sf_keys);
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free(buf);
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}
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#endif
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@ -330,6 +330,9 @@ static const hcakey_info hcakey_list[] = {
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/* Inazuma Eleven SD (Android) */
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{0xC436E03737D55B5F}, // C436E03737D55B5F / 14138734607940803423
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/* Detective Conan Runner / Case Closed Runner (Android) */
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{1175268187653273344}, // 104f643098e3f700
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/* Dragalia Lost (iOS/Android) */
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{2967411924141, subkeys_dgl, sizeof(subkeys_dgl) / sizeof(subkeys_dgl[0]) }, // 000002B2E7889CAD
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