mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-11-10 06:02:01 +00:00
212 lines
No EOL
6.3 KiB
C
212 lines
No EOL
6.3 KiB
C
#include <string.h>
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#include "../mem/heap.h"
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#include "gfx.h"
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#include "fs.h"
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#include "emmc.h"
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#include "../utils/types.h"
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#include "../libs/fatfs/ff.h"
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#include "../utils/sprintf.h"
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#include "../utils/btn.h"
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#include "../gfx/gfx.h"
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#include "../utils/util.h"
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#include "../hos/pkg1.h"
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#include "../storage/sdmmc.h"
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#include "../storage/nx_emmc.h"
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#include "../sec/tsec.h"
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#include "../soc/t210.h"
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#include "../soc/fuse.h"
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#include "../mem/mc.h"
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#include "../sec/se.h"
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#include "../soc/hw_init.h"
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#include "../mem/emc.h"
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#include "../mem/sdram.h"
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sdmmc_storage_t storage;
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emmc_part_t *system_part;
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sdmmc_t sdmmc;
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__attribute__ ((aligned (16))) FATFS emmc;
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LIST_INIT(gpt);
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u8 bis_key[4][32];
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short pkg1ver = -1;
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static bool _key_exists(const void *data) { return memcmp(data, zeros, 0x10); };
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static void _generate_kek(u32 ks, const void *key_source, void *master_key, const void *kek_seed, const void *key_seed) {
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if (!_key_exists(key_source) || !_key_exists(master_key) || !_key_exists(kek_seed))
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return;
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se_aes_key_set(ks, master_key, 0x10);
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se_aes_unwrap_key(ks, ks, kek_seed);
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se_aes_unwrap_key(ks, ks, key_source);
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if (key_seed && _key_exists(key_seed))
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se_aes_unwrap_key(ks, ks, key_seed);
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}
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void print_biskeys(){
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gfx_printf("Bis_Key_00\n");
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gfx_hexdump(0, bis_key[0], 32);
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gfx_printf("Bis_Key_01\n");
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gfx_hexdump(0, bis_key[1], 32);
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gfx_printf("Bis_Key_02 & 03\n");
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gfx_hexdump(0, bis_key[2], 32);
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}
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int mount_emmc(char *partition, int biskeynumb){
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f_unmount("emmc:");
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se_aes_key_set(8, bis_key[biskeynumb] + 0x00, 0x10);
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se_aes_key_set(9, bis_key[biskeynumb] + 0x10, 0x10);
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system_part = nx_emmc_part_find(&gpt, partition);
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if (!system_part) {
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gfx_printf("Failed to locate %s partition.", partition);
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return -1;
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}
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if (f_mount(&emmc, "emmc:", 1)) {
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gfx_printf("Mount failed of %s.", partition);
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return -1;
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}
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return 0;
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}
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short returnpkg1ver(){
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return pkg1ver;
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}
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void disconnect_emmc(){
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f_unmount("emmc:");
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sdmmc_storage_end(&storage);
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}
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int dump_biskeys(){
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u8 temp_key[0x10], device_key[0x10] = {0};
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tsec_ctxt_t tsec_ctxt;
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int retries = 0;
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sdmmc_storage_init_mmc(&storage, &sdmmc, SDMMC_4, SDMMC_BUS_WIDTH_8, 4);
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// Read package1.
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u8 *pkg1 = (u8 *)malloc(0x40000);
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sdmmc_storage_set_mmc_partition(&storage, 1);
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sdmmc_storage_read(&storage, 0x100000 / NX_EMMC_BLOCKSIZE, 0x40000 / NX_EMMC_BLOCKSIZE, pkg1);
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const pkg1_id_t *pkg1_id = pkg1_identify(pkg1);
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if (!pkg1_id) {
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EPRINTF("Unknown pkg1 version.");
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return -1;
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}
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bool found_tsec_fw = false;
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for (const u32 *pos = (const u32 *)pkg1; (u8 *)pos < pkg1 + 0x40000; pos += 0x100 / sizeof(u32)) {
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if (*pos == 0xCF42004D) {
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tsec_ctxt.fw = (u8 *)pos;
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found_tsec_fw = true;
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break;
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}
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}
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if (!found_tsec_fw) {
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EPRINTF("Failed to locate TSEC firmware.");
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return -1;
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}
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u8 tsec_keys[0x10] = {0};
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tsec_key_data_t *key_data = (tsec_key_data_t *)(tsec_ctxt.fw + TSEC_KEY_DATA_ADDR);
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tsec_ctxt.pkg1 = pkg1;
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tsec_ctxt.size = 0x100 + key_data->blob0_size + key_data->blob1_size + key_data->blob2_size + key_data->blob3_size + key_data->blob4_size;
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if (pkg1_id->kb >= KB_FIRMWARE_VERSION_700) {
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// Exit after TSEC key generation.
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*((vu16 *)((u32)tsec_ctxt.fw + 0x2DB5)) = 0x02F8;
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}
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int res = 0;
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mc_disable_ahb_redirect();
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while (tsec_query(tsec_keys, 0, &tsec_ctxt) < 0) {
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memset(tsec_keys, 0x00, 0x10);
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retries++;
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if (retries > 15) {
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res = -1;
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break;
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}
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}
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free(pkg1);
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mc_enable_ahb_redirect();
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if (res < 0) {
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gfx_printf("ERROR %x dumping TSEC.\n", res);
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return -1;
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}
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u32 sbk[4] = {FUSE(FUSE_PRIVATE_KEY0), FUSE(FUSE_PRIVATE_KEY1),
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FUSE(FUSE_PRIVATE_KEY2), FUSE(FUSE_PRIVATE_KEY3)};
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se_aes_key_set(8, tsec_keys, 0x10);
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se_aes_key_set(9, sbk, 0x10);
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se_aes_crypt_block_ecb(8, 0, temp_key, keyblob_key_source);
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se_aes_crypt_block_ecb(9, 0, temp_key, temp_key);
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se_aes_key_set(7, temp_key, 0x10);
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se_aes_crypt_block_ecb(7, 0, device_key, per_console_key_source);
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/* key = unwrap(source, wrapped_key):
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key_set(ks, wrapped_key), block_ecb(ks, 0, key, source) -> final key in key
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*/
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if (_key_exists(device_key)) {
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se_aes_key_set(8, device_key, 0x10);
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se_aes_unwrap_key(8, 8, retail_specific_aes_key_source); // kek = unwrap(rsaks, devkey)
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se_aes_crypt_block_ecb(8, 0, bis_key[0] + 0x00, bis_key_source[0] + 0x00); // bkey = unwrap(bkeys, kek)
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se_aes_crypt_block_ecb(8, 0, bis_key[0] + 0x10, bis_key_source[0] + 0x10);
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// kek = generate_kek(bkeks, devkey, aeskek, aeskey)
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_generate_kek(8, bis_kek_source, device_key, aes_kek_generation_source, aes_key_generation_source);
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se_aes_crypt_block_ecb(8, 0, bis_key[1] + 0x00, bis_key_source[1] + 0x00); // bkey = unwrap(bkeys, kek)
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se_aes_crypt_block_ecb(8, 0, bis_key[1] + 0x10, bis_key_source[1] + 0x10);
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se_aes_crypt_block_ecb(8, 0, bis_key[2] + 0x00, bis_key_source[2] + 0x00);
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se_aes_crypt_block_ecb(8, 0, bis_key[2] + 0x10, bis_key_source[2] + 0x10);
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memcpy(bis_key[3], bis_key[2], 0x20);
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}
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sdmmc_storage_set_mmc_partition(&storage, 0);
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// Parse eMMC GPT.
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nx_emmc_gpt_parse(&gpt, &storage);
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/*
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char part_name[37] = "SYSTEM";
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// todo: menu selection for this
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u32 bis_key_index = 0;
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if (strcmp(part_name, "PRODINFOF") == 0)
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bis_key_index = 0;
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else if (strcmp(part_name, "SAFE") == 0)
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bis_key_index = 1;
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else if (strcmp(part_name, "SYSTEM") == 0)
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bis_key_index = 2;
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else if (strcmp(part_name, "USER") == 0)
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bis_key_index = 3;
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else {
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gfx_printf("Partition name %s unrecognized.", part_name);
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return;
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}
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*/
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se_aes_key_set(8, bis_key[2] + 0x00, 0x10);
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se_aes_key_set(9, bis_key[2] + 0x10, 0x10);
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/*
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system_part = nx_emmc_part_find(&gpt, "SYSTEM");
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if (!system_part) {
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gfx_printf("Failed to locate SYSTEM partition.");
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return -1;
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}
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if (f_mount(&emmc_sys, "system:", 1)) {
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gfx_printf("Mount failed of SYSTEM.");
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return -1;
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}
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*/
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pkg1ver = pkg1_id->kb;
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return 0;
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} |