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https://github.com/s1204IT/Lockpick_RCM.git
synced 2024-11-08 11:31:43 +00:00
Do not require MMC mount to dump keys
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parent
faaf2166e9
commit
705bb7c066
1 changed files with 23 additions and 9 deletions
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@ -131,8 +131,8 @@ static void _derive_master_keys_from_latest_key(key_derivation_ctx_t *keys, bool
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static void _derive_keyblob_keys(key_derivation_ctx_t *keys) {
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u8 *keyblob_block = (u8 *)calloc(KB_FIRMWARE_VERSION_600 + 1, NX_EMMC_BLOCKSIZE);
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encrypted_keyblob_t *current_keyblob = (encrypted_keyblob_t *)keyblob_block;
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u32 keyblob_mac[AES_128_KEY_SIZE / 4] = {0};
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bool have_keyblobs = true;
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if (FUSE(FUSE_PRIVATE_KEY0) == 0xFFFFFFFF) {
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u8 *aes_keys = (u8 *)calloc(0x1000, 1);
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@ -146,10 +146,16 @@ static void _derive_keyblob_keys(key_derivation_ctx_t *keys) {
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keys->sbk[3] = FUSE(FUSE_PRIVATE_KEY3);
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}
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if (!emummc_storage_read(KEYBLOB_OFFSET / NX_EMMC_BLOCKSIZE, KB_FIRMWARE_VERSION_600 + 1, keyblob_block)) {
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if (!emmc_storage.initialized) {
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have_keyblobs = false;
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} else if (!emummc_storage_read(KEYBLOB_OFFSET / NX_EMMC_BLOCKSIZE, KB_FIRMWARE_VERSION_600 + 1, keyblob_block)) {
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EPRINTF("Unable to read keyblobs.");
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have_keyblobs = false;
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} else {
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have_keyblobs = true;
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}
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encrypted_keyblob_t *current_keyblob = (encrypted_keyblob_t *)keyblob_block;
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for (u32 i = 0; i <= KB_FIRMWARE_VERSION_600; i++, current_keyblob++) {
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minerva_periodic_training();
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se_aes_crypt_block_ecb(12, DECRYPT, keys->keyblob_key[i], keyblob_key_sources[i]); // temp = unwrap(kbks, tsec)
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@ -161,6 +167,10 @@ static void _derive_keyblob_keys(key_derivation_ctx_t *keys) {
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se_aes_crypt_block_ecb(7, DECRYPT, keys->device_key_4x, device_master_key_source_kek_source);
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}
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if (!have_keyblobs) {
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continue;
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}
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// verify keyblob is not corrupt
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se_aes_key_set(10, keys->keyblob_mac_key[i], sizeof(keys->keyblob_mac_key[i]));
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se_aes_cmac(10, keyblob_mac, sizeof(keyblob_mac), current_keyblob->iv, sizeof(current_keyblob->iv) + sizeof(keyblob_t));
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@ -547,7 +557,7 @@ static void _save_mariko_partial_keys(u32 start, u32 count, bool append) {
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}
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u32 pos = 0;
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u32 zeros[4] = {0};
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u32 zeros[AES_128_KEY_SIZE / 4] = {0};
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u8 *data = malloc(4 * AES_128_KEY_SIZE);
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char *text_buffer = calloc(1, 0x100 * count);
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@ -768,13 +778,13 @@ static void _derive_keys() {
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if (emummc_storage_init_mmc()) {
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EPRINTF("Unable to init MMC.");
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return;
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} else {
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TPRINTFARGS("%kMMC init... ", colors[(color_idx++) % 6]);
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}
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TPRINTFARGS("%kMMC init... ", colors[(color_idx++) % 6]);
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if (!emummc_storage_set_mmc_partition(EMMC_BOOT0)) {
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if (emmc_storage.initialized && !emummc_storage_set_mmc_partition(EMMC_BOOT0)) {
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EPRINTF("Unable to set partition.");
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return;
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emummc_storage_end();
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}
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bool is_dev = fuse_read_hw_state() == FUSE_NX_HW_STATE_DEV;
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@ -821,7 +831,9 @@ static void _derive_keys() {
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titlekey_buffer_t *titlekey_buffer = (titlekey_buffer_t *)TITLEKEY_BUF_ADR;
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// Requires BIS key for SYSTEM partition
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if (_key_exists(keys->bis_key[2])) {
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if (!emmc_storage.initialized) {
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EPRINTF("eMMC not initialized.\nSkipping SD seed and titlekeys.");
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} else if (_key_exists(keys->bis_key[2])) {
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_derive_emmc_keys(keys, titlekey_buffer);
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} else {
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EPRINTF("Missing needed BIS keys.\nSkipping SD seed and titlekeys.");
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@ -861,7 +873,9 @@ void dump_keys() {
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// Ignore whether emummc is enabled.
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h_cfg.emummc_force_disable = emu_cfg.sector == 0 && !emu_cfg.path;
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emu_cfg.enabled = !h_cfg.emummc_force_disable;
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emummc_storage_end(&emmc_storage);
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if (emmc_storage.initialized) {
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emummc_storage_end();
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}
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gfx_printf("\n%kPress a button to return to the menu.", colors[(color_idx) % 6], colors[(color_idx + 1) % 6], colors[(color_idx + 2) % 6]);
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btn_wait();
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gfx_clear_grey(0x1B);
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