static int decryptFirmKtrArm9(void *p)
{
uint8_t key[AES_BLOCK_SIZE];
PartitionInfo info;
Arm9Hdr *hdr;
FirmSeg *seg, *btm;
seg = ((FirmHdr *)p)->segs;
for (btm = seg + FIRM_SEG_NUM; seg->isArm11; seg++)
if (seg == btm)
return -1;
hdr = (void *)(p + seg->offset);
info.ctr = hdr->ctr;
info.buffer = (uint8_t *)hdr + 0x800;
info.keyY = hdr->keyY;
info.size = atoi(hdr->size);
use_aeskey(0x11);
if (hdr->ext.pad[0] == 0xFFFFFFFF) {
info.keyslot = 0x15;
aes_decrypt(hdr->keyX, key, NULL, 1, AES_ECB_DECRYPT_MODE);
} else {
info.keyslot = 0x16;
aes_decrypt(hdr->ext.s.keyX_0x16, key, NULL, 1, AES_ECB_DECRYPT_MODE);
}
setup_aeskeyX(info.keyslot, key);
return DecryptPartition(&info);
}
u32 CryptBuffer(CryptBufferInfo *info)
{
u8 ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->ctr, 16);
u8* buffer = info->buffer;
u32 size = info->size;
u32 mode = info->mode;
if (info->setKeyY) {
u8 keyY[16] __attribute__((aligned(32)));
memcpy(keyY, info->keyY, 16);
setup_aeskeyY(info->keyslot, keyY);
info->setKeyY = 0;
}
use_aeskey(info->keyslot);
for (u32 i = 0; i < size; i += 0x10, buffer += 0x10) {
if (((mode & (0x7 << 27)) != AES_ECB_DECRYPT_MODE) && ((mode & (0x7 << 27)) != AES_ECB_ENCRYPT_MODE))
set_ctr(ctr);
if ((mode & (0x7 << 27)) == AES_CBC_DECRYPT_MODE)
memcpy(ctr, buffer, 0x10);
aes_decrypt((void*) buffer, (void*) buffer, 1, mode);
if ((mode & (0x7 << 27)) == AES_CBC_ENCRYPT_MODE)
memcpy(ctr, buffer, 0x10);
else if ((mode & (0x7 << 27)) == AES_CTR_MODE)
add_ctr(ctr, 0x1);
}
memcpy(info->ctr, ctr, 16);
return 0;
}
void ctr_twl_keyslot_setup(void)
{
//Only a9lh really needs to bother with this, and it really only needs to happen once, before ITCM gets messed up.
static bool setup = false;
if (!setup && ctr_detect_a9lh_entry())
{
uint32_t* TwlCustId = (uint32_t*) (0x01FFB808);
uint32_t TwlKeyX[4];
alignas(32) uint8_t TwlKeyY[16];
// thanks b1l1s & Normmatt
// see source from https://gbatemp.net/threads/release-twltool-dsi-downgrading-save-injection-etc-multitool.393488/
const char* nintendo = "NINTENDO";
TwlKeyX[0] = (TwlCustId[0] ^ 0xB358A6AF) | 0x80000000;
TwlKeyX[3] = TwlCustId[1] ^ 0x08C267B7;
memcpy(TwlKeyX + 1, nintendo, 8);
// see: https://www.3dbrew.org/wiki/Memory_layout#ARM9_ITCM
uint32_t TwlKeyYW3 = 0xE1A00005;
memcpy(TwlKeyY, (uint8_t*) 0x01FFD3C8, 12);
memcpy(TwlKeyY + 12, &TwlKeyYW3, 4);
setup_aeskeyX(0x03, (uint8_t*)TwlKeyX);
setup_aeskeyY(0x03, TwlKeyY);
use_aeskey(0x03);
}
setup = true;
}
u32 DecryptTitlekeys(void)
{
EncKeysInfo *info = (EncKeysInfo*)0x20316000;
if (!DebugFileOpen("/encTitleKeys.bin"))
return 1;
if (!DebugFileRead(info, 16, 0)) {
FileClose();
return 1;
}
if (!info->n_entries || info->n_entries > MAX_ENTRIES) {
Debug("Too many/few entries specified: %i", info->n_entries);
FileClose();
return 1;
}
Debug("Number of entries: %i", info->n_entries);
if (!DebugFileRead(info->entries, info->n_entries * sizeof(TitleKeyEntry), 16)) {
FileClose();
return 1;
}
FileClose();
Debug("Decrypting Title Keys...");
u8 ctr[16] __attribute__((aligned(32)));
u8 keyY[16] __attribute__((aligned(32)));
u32 i;
for (i = 0; i < info->n_entries; i++) {
memset(ctr, 0, 16);
memcpy(ctr, info->entries[i].titleId, 8);
set_ctr(AES_BIG_INPUT|AES_NORMAL_INPUT, ctr);
memcpy(keyY, (void *)common_keyy[info->entries[i].commonKeyIndex], 16);
setup_aeskey(0x3D, AES_BIG_INPUT|AES_NORMAL_INPUT, keyY);
use_aeskey(0x3D);
aes_decrypt(info->entries[i].encryptedTitleKey, info->entries[i].encryptedTitleKey, ctr, 1, AES_CBC_DECRYPT_MODE);
}
if (!DebugFileCreate("/decTitleKeys.bin", true))
return 1;
if (!DebugFileWrite(info, info->n_entries * sizeof(TitleKeyEntry) + 16, 0)) {
FileClose();
return 1;
}
FileClose();
Debug("Done!");
return 0;
}
static inline void input(void *io, void *buffer, uint64_t block, size_t block_count)
{
ctr_crypto_interface *crypto_io = io;
if (block_count)
{
uint32_t mode = crypto_io->input_mode;
alignas(4) uint8_t ctr[16];
memcpy(ctr, crypto_io->ctr, 16);
crypto_io->advance_ctr_input(crypto_io, buffer, block_count * crypto_io->block_size, block, ctr);
use_aeskey(crypto_io->keySlot);
crypto_io->crypto_input(buffer, buffer, block_count, mode, ctr);
}
}
u32 DecryptPartition(PartitionInfo* info){
size_t bytesWritten;
if (info->keyY != NULL)
setup_aeskey(info->keyslot, AES_BIG_INPUT | AES_NORMAL_INPUT, info->keyY);
use_aeskey(info->keyslot);
u8 ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->ctr, 16);
u32 size_bytes = info->size;
for (u32 i = 0; i < size_bytes; i += BLOCK_SIZE) {
u32 j;
for (j = 0; (j < BLOCK_SIZE) && (i + j < size_bytes); j += 16) {
set_ctr(AES_BIG_INPUT | AES_NORMAL_INPUT, ctr);
aes_decrypt((void*)info->buffer + j, (void*)info->buffer + j, ctr, 1, AES_CTR_MODE);
add_ctr(ctr, 1);
}
}
return 0;
}
u32 DecryptPartition(PartitionInfo* info){
size_t bytesWritten;
if(info->keyY != NULL)
setup_aeskey(info->keyslot, AES_BIG_INPUT|AES_NORMAL_INPUT, info->keyY);
use_aeskey(info->keyslot);
u8 ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->ctr, 16);
u32 size_bytes = info->size;
for (u32 i = 0; i < size_bytes; i += BLOCK_SIZE) {
u32 j;
for (j = 0; (j < BLOCK_SIZE) && (i+j < size_bytes); j+= 16) {
set_ctr(AES_BIG_INPUT|AES_NORMAL_INPUT, ctr);
aes_decrypt((void*)info->buffer+j, (void*)info->buffer+j, ctr, 1, AES_CTR_MODE);
add_ctr(ctr, 1);
TryScreenShot(); //Putting it here allows us to take screenshots at any decryption point, since everyting loops in this
}
}
return 0;
}
u32 DecryptBuffer(DecryptBufferInfo *info)
{
u8 ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->CTR, 16);
u8* buffer = info->buffer;
u32 size = info->size;
if (info->setKeyY) {
setup_aeskey(info->keyslot, AES_BIG_INPUT | AES_NORMAL_INPUT, info->keyY);
info->setKeyY = 0;
}
use_aeskey(info->keyslot);
for (u32 i = 0; i < size; i += 0x10, buffer += 0x10) {
set_ctr(AES_BIG_INPUT | AES_NORMAL_INPUT, ctr);
aes_decrypt((void*) buffer, (void*) buffer, ctr, 1, AES_CTR_MODE);
add_ctr(ctr, 0x1);
}
memcpy(info->CTR, ctr, 16);
return 0;
}
u32 NandPadgen()
{
u8* ctrStart = FindNandCtr();
if (ctrStart == NULL)
return 1;
u8 ctr[16] = {0x0};
u32 i = 0;
for(i = 0; i < 16; i++)
ctr[i] = *(ctrStart + (15 - i)); //The CTR is stored backwards in memory.
add_ctr(ctr, 0xB93000); //The CTR stored in memory would theoretically be for NAND block 0, so we need to increment it some.
u32 keyslot = 0x0;
u32 nand_size = 0;
switch (GetUnitPlatform()) {
case PLATFORM_3DS:
keyslot = 0x4;
nand_size = 758;
break;
case PLATFORM_N3DS:
keyslot = 0x5;
nand_size = 1055;
break;
}
Debug("Creating NAND FAT16 xorpad. Size (MB): %u", nand_size);
Debug("Filename: nand.fat16.xorpad");
PadInfo padInfo = {.keyslot = keyslot, .setKeyY = 0, .size_mb = nand_size , .filename = "/nand.fat16.xorpad"};
memcpy(padInfo.CTR, ctr, 16);
u32 result = CreatePad(&padInfo);
if(result == 0) {
Debug("Done!");
return 0;
} else {
return 1;
}
}
u32 CreatePad(PadInfo *info)
{
static const uint8_t zero_buf[16] __attribute__((aligned(16))) = {0};
u8* buffer = BUFFER_ADDRESS;
u32 result = 0;
if (!FileCreate(info->filename, true)) // No DebugFileCreate() here - messages are already given
return 1;
if(info->setKeyY)
setup_aeskey(info->keyslot, AES_BIG_INPUT | AES_NORMAL_INPUT, info->keyY);
use_aeskey(info->keyslot);
u8 ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->CTR, 16);
u32 size_bytes = info->size_mb * 1024*1024;
for (u32 i = 0; i < size_bytes; i += BUFFER_MAX_SIZE) {
u32 curr_block_size = min(BUFFER_MAX_SIZE, size_bytes - i);
for (u32 j = 0; j < curr_block_size; j+= 16) {
set_ctr(AES_BIG_INPUT | AES_NORMAL_INPUT, ctr);
aes_decrypt((void*)zero_buf, (void*)buffer + j, ctr, 1, AES_CTR_MODE);
add_ctr(ctr, 1);
}
ShowProgress(i, size_bytes);
if (!DebugFileWrite((void*)buffer, curr_block_size, i)) {
result = 1;
break;
}
}
ShowProgress(0, 0);
FileClose();
return result;
}
u32 NandDumper() {
u8* buffer = BUFFER_ADDRESS;
u32 nand_size = (GetUnitPlatform() == PLATFORM_3DS) ? 0x3AF00000 : 0x4D800000;
u32 result = 0;
Debug("Dumping System NAND. Size (MB): %u", nand_size / (1024 * 1024));
if (!DebugFileCreate("/NAND.bin", true))
return 1;
u32 n_sectors = nand_size / NAND_SECTOR_SIZE;
for (u32 i = 0; i < n_sectors; i += SECTORS_PER_READ) {
ShowProgress(i, n_sectors);
sdmmc_nand_readsectors(i, SECTORS_PER_READ, buffer);
if(!DebugFileWrite(buffer, NAND_SECTOR_SIZE * SECTORS_PER_READ, i * NAND_SECTOR_SIZE)) {
result = 1;
break;
}
}
ShowProgress(0, 0);
FileClose();
return result;
}
u32 NandPartitionsDumper() {
u32 ctrnand_offset;
u32 ctrnand_size;
u32 keyslot;
switch (GetUnitPlatform()) {
case PLATFORM_3DS:
ctrnand_offset = 0x0B95CA00;
ctrnand_size = 0x2F3E3600;
keyslot = 0x4;
break;
case PLATFORM_N3DS:
ctrnand_offset = 0x0B95AE00;
ctrnand_size = 0x41D2D200;
keyslot = 0x5;
break;
}
// see: http://3dbrew.org/wiki/Flash_Filesystem
Debug("Dumping firm0.bin: %s!", DumpPartition("firm0.bin", 0x0B130000, 0x00400000, 0x6) == 0 ? "succeeded" : "failed");
Debug("Dumping firm1.bin: %s!", DumpPartition("firm1.bin", 0x0B530000, 0x00400000, 0x6) == 0 ? "succeeded" : "failed");
Debug("Dumping ctrnand.bin: %s!", DumpPartition("ctrnand.bin", ctrnand_offset, ctrnand_size, keyslot) == 0 ? "succeeded" : "failed");
return 0;
}
u32 SdPadgen()
{
u32 result;
SdInfo *info = (SdInfo*)0x20316000;
u8 movable_seed[0x120] = {0};
// Load console 0x34 keyY from movable.sed if present on SD card
if (DebugFileOpen("/movable.sed")) {
if (!DebugFileRead(&movable_seed, 0x120, 0)) {
FileClose();
return 1;
}
FileClose();
if (memcmp(movable_seed, "SEED", 4) != 0) {
Debug("movable.sed is too corrupt!");
return 1;
}
setup_aeskey(0x34, AES_BIG_INPUT|AES_NORMAL_INPUT, &movable_seed[0x110]);
use_aeskey(0x34);
}
if (!DebugFileOpen("/SDinfo.bin"))
return 1;
if (!DebugFileRead(info, 4, 0)) {
FileClose();
return 1;
}
if (!info->n_entries || info->n_entries > MAX_ENTRIES) {
Debug("Too many/few entries!");
return 1;
}
Debug("Number of entries: %i", info->n_entries);
if (!DebugFileRead(info->entries, info->n_entries * sizeof(SdInfoEntry), 4)) {
FileClose();
return 1;
}
FileClose();
for(u32 i = 0; i < info->n_entries; i++) {
Debug ("Creating pad number: %i. Size (MB): %i", i+1, info->entries[i].size_mb);
PadInfo padInfo = {.keyslot = 0x34, .setKeyY = 0, .size_mb = info->entries[i].size_mb};
memcpy(padInfo.CTR, info->entries[i].CTR, 16);
memcpy(padInfo.filename, info->entries[i].filename, 180);
result = CreatePad(&padInfo);
if (!result)
Debug("Done!");
else
return 1;
}
return 0;
}
static u8* FindNandCtr()
{
static const char* versions[] = {"4.x", "5.x", "6.x", "7.x", "8.x", "9.x"};
static const u8* version_ctrs[] = {
(u8*)0x080D7CAC,
(u8*)0x080D858C,
(u8*)0x080D748C,
(u8*)0x080D740C,
(u8*)0x080D74CC,
(u8*)0x080D794C
};
static const u32 version_ctrs_len = sizeof(version_ctrs) / sizeof(u32);
for (u32 i = 0; i < version_ctrs_len; i++) {
if (*(u32*)version_ctrs[i] == 0x5C980) {
Debug("System version %s", versions[i]);
return (u8*)(version_ctrs[i] + 0x30);
}
}
// If value not in previous list start memory scanning (test range)
for (u8* c = (u8*)0x080D8FFF; c > (u8*)0x08000000; c--) {
if (*(u32*)c == 0x5C980 && *(u32*)(c + 1) == 0x800005C9) {
Debug("CTR Start 0x%08X", c + 0x30);
return c + 0x30;
}
}
return NULL;
}
u32 DumpPartition(char* filename, u32 offset, u32 size, u32 keyslot) {
DecryptBufferInfo info;
u8* buffer = BUFFER_ADDRESS;
u8* ctrStart = FindNandCtr();
u32 result = 0;
Debug("Dumping System NAND Partition. Size (MB): %u", size / (1024 * 1024));
Debug("Filename: %s", filename);
if (ctrStart == NULL)
return 1;
info.keyslot = keyslot;
info.setKeyY = 0;
info.size = SECTORS_PER_READ * NAND_SECTOR_SIZE;
info.buffer = buffer;
for (u32 i = 0; i < 16; i++) {
info.CTR[i] = *(ctrStart + (0xF - i)); // The CTR is stored backwards in memory.
}
add_ctr(info.CTR, offset / 0x10);
if (!DebugFileCreate(filename, true))
return 1;
u32 n_sectors = size / NAND_SECTOR_SIZE;
u32 start_sector = offset / NAND_SECTOR_SIZE;
for (u32 i = 0; i < n_sectors; i += SECTORS_PER_READ) {
ShowProgress(i, n_sectors);
sdmmc_nand_readsectors(start_sector + i, SECTORS_PER_READ, buffer);
DecryptBuffer(&info);
if (!DebugFileWrite(buffer, NAND_SECTOR_SIZE * SECTORS_PER_READ, i * NAND_SECTOR_SIZE)) {
result = 1;
break;
}
}
ShowProgress(0, 0);
FileClose();
return result;
}
u32 SdPadgen(u32 param)
{
(void) (param); // param is unused here
SdInfo *info = (SdInfo*) 0x20316000;
// setup AES key from SD
SetupSdKeyY0x34(false, NULL);
if (!DebugFileOpen("SDinfo.bin"))
return 1;
if (!DebugFileRead(info, 4, 0)) {
FileClose();
return 1;
}
if (!info->n_entries || info->n_entries > MAX_ENTRIES) {
FileClose();
Debug("Bad number of entries!");
return 1;
}
if (!DebugFileRead(info->entries, info->n_entries * sizeof(SdInfoEntry), 4)) {
FileClose();
return 1;
}
FileClose();
Debug("Number of entries: %i", info->n_entries);
for(u32 i = 0; i < info->n_entries; i++) {
PadInfo padInfo = {.keyslot = 0x34, .setKeyY = 0, .size_mb = info->entries[i].size_mb, .mode = AES_CNT_CTRNAND_MODE};
memcpy(padInfo.ctr, info->entries[i].ctr, 16);
memcpy(padInfo.filename, info->entries[i].filename, 180);
Debug ("%2i: %s (%iMB)", i, info->entries[i].filename, info->entries[i].size_mb);
if (CreatePad(&padInfo) != 0)
return 1; // this can't fail anyways
}
return 0;
}
u32 SdPadgenDirect(u32 param)
{
(void) (param); // param is unused here
SdInfo *info = (SdInfo*) 0x20316000;
char basepath[256];
u8 movable_keyY[16];
if (SetupSdKeyY0x34(true, movable_keyY) != 0)
return 1; // movable.sed has to be present in NAND
Debug("");
if (SdFolderSelector(basepath, movable_keyY) != 0)
return 1;
Debug("");
if (SdInfoGen(info, basepath) != 0)
return 1;
if (!info->n_entries) {
Debug("Nothing found in folder");
return 1;
}
Debug("Number of entries: %i", info->n_entries);
for(u32 i = 0; i < info->n_entries; i++) {
PadInfo padInfo = {.keyslot = 0x34, .setKeyY = 0, .size_mb = info->entries[i].size_mb, .mode = AES_CNT_CTRNAND_MODE};
memcpy(padInfo.ctr, info->entries[i].ctr, 16);
memcpy(padInfo.filename, info->entries[i].filename, 180);
Debug ("%2i: %s (%iMB)", i, info->entries[i].filename, info->entries[i].size_mb);
if (CreatePad(&padInfo) != 0)
return 1; // this can't fail anyways
}
return 0;
}
u32 AnyPadgen(u32 param)
{
(void) (param); // param is unused here
AnyPadInfo *info = (AnyPadInfo*) 0x20316000;
// get header
if ((FileGetData("anypad.bin", info, 16, 0) != 16) || !info->n_entries || info->n_entries > MAX_ENTRIES) {
Debug("Corrupt or not existing: anypad.bin");
return 1;
}
// get data
u32 data_size = info->n_entries * sizeof(AnyPadInfoEntry);
if (FileGetData("anypad.bin", (u8*) info + 16, data_size, 16) != data_size) {
Debug("File is missing data: anypad.bin");
return 1;
}
Debug("Processing anypad.bin...");
Debug("Number of entries: %i", info->n_entries);
for (u32 i = 0; i < info->n_entries; i++) { // this translates all entries to a standard padInfo struct
AnyPadInfoEntry* entry = &(info->entries[i]);
PadInfo padInfo = {.keyslot = entry->keyslot, .setKeyY = 0, .size_mb = 0, .size_b = entry->size_b, .mode = entry->mode};
memcpy(padInfo.filename, entry->filename, 80);
memcpy(padInfo.ctr, entry->ctr, 16);
// process keys
if (entry->setNormalKey)
setup_aeskey(entry->keyslot, entry->normalKey);
if (entry->setKeyX)
setup_aeskeyX(entry->keyslot, entry->keyX);
if (entry->setKeyY)
setup_aeskeyY(entry->keyslot, entry->keyY);
use_aeskey(entry->keyslot);
// process flags
if (entry->flags & (AP_USE_NAND_CTR|AP_USE_SD_CTR)) {
u32 ctr_add = getbe32(padInfo.ctr + 12);
u8 shasum[32];
u8 cid[16];
sdmmc_get_cid((entry->flags & AP_USE_NAND_CTR) ? 1 : 0, (uint32_t*) cid);
if (entry->mode == AES_CNT_TWLNAND_MODE) {
sha_quick(shasum, cid, 16, SHA1_MODE);
for (u32 i = 0; i < 16; i++)
padInfo.ctr[i] = shasum[15-i];
} else {
sha_quick(shasum, cid, 16, SHA256_MODE);
memcpy(padInfo.ctr, shasum, 16);
}
add_ctr(padInfo.ctr, ctr_add);
}
// create the pad
Debug ("%2i: %s (%ikB)", i, entry->filename, entry->size_b / 1024);
if (CreatePad(&padInfo) != 0)
return 1; // this can't fail anyways
}
return 0;
}
u32 CtrNandPadgen(u32 param)
{
char* filename = (param & PG_FORCESLOT4) ? "nand.fat16.slot0x04.xorpad" : "nand.fat16.xorpad";
u32 keyslot;
u32 nand_size;
// legacy sizes & offset, to work with Python 3DSFAT16Tool
if (GetUnitPlatform() == PLATFORM_3DS) {
if (param & PG_FORCESLOT4) {
Debug("This is a N3DS only feature");
return 1;
}
keyslot = 0x4;
nand_size = 758;
} else {
keyslot = (param & PG_FORCESLOT4) ? 0x4 : 0x5;
nand_size = 1055;
}
Debug("Creating NAND FAT16 xorpad. Size (MB): %u", nand_size);
Debug("Filename: %s", filename);
PadInfo padInfo = {
.keyslot = keyslot,
.setKeyY = 0,
.size_mb = nand_size,
.mode = AES_CNT_CTRNAND_MODE
};
strncpy(padInfo.filename, filename, 64);
if(GetNandCtr(padInfo.ctr, 0xB930000) != 0)
return 1;
return CreatePad(&padInfo);
}
u32 TwlNandPadgen(u32 param)
{
(void) (param); // param is unused here
PartitionInfo* twln_info = GetPartitionInfo(P_TWLN);
u32 size_mb = (twln_info->size + (1024 * 1024) - 1) / (1024 * 1024);
Debug("Creating TWLN FAT16 xorpad. Size (MB): %u", size_mb);
Debug("Filename: twlnand.fat16.xorpad");
PadInfo padInfo = {
.keyslot = twln_info->keyslot,
.setKeyY = 0,
.size_mb = size_mb,
.filename = "twlnand.fat16.xorpad",
.mode = AES_CNT_TWLNAND_MODE
};
if(GetNandCtr(padInfo.ctr, twln_info->offset) != 0)
return 1;
return CreatePad(&padInfo);
}
u32 Firm0Firm1Padgen(u32 param)
{
(void) (param); // param is unused here
PartitionInfo* firm0_info = GetPartitionInfo(P_FIRM0);
PartitionInfo* firm1_info = GetPartitionInfo(P_FIRM1);
u32 size_mb = (firm0_info->size + firm1_info->size + (1024 * 1024) - 1) / (1024 * 1024);
Debug("Creating FIRM0FIRM1 xorpad. Size (MB): %u", size_mb);
Debug("Filename: firm0firm1.xorpad");
PadInfo padInfo = {
.keyslot = firm0_info->keyslot,
.setKeyY = 0,
.size_mb = size_mb,
.filename = "firm0firm1.xorpad",
.mode = AES_CNT_CTRNAND_MODE
};
if(GetNandCtr(padInfo.ctr, firm0_info->offset) != 0)
return 1;
return CreatePad(&padInfo);
}
uint32_t NcchPadgen()
{
uint32_t result;
File pf;
NcchInfo *info = (NcchInfo*)0x20316000;
const char *filename = "/ncchinfo.bin";
wchar_t wfilename[14];
mbstowcs(wfilename, filename, 14);
if (!FileOpen(&pf, filename, 0)) {
print(strings[STR_ERROR_OPENING], filename+1);
return 1;
}
FileRead(&pf, info, 16, 0);
if (info->ncch_info_version != 0xF0000003) {
print(strings[STR_WRONG], filename+1, strings[STR_VERSION]);
return 0;
}
if (!info->n_entries || info->n_entries > MAXENTRIES) {
print(strings[STR_WRONG], filename+1, strings[STR_ENTRIES_COUNT]);
return 0;
}
FileRead(&pf, info->entries, info->n_entries * sizeof(NcchInfoEntry), 16);
FileClose(&pf);
print(strings[STR_PROCESSING], wfilename+1);
ConsoleShow();
for(uint32_t i = 0; i < info->n_entries; i++) {
PadInfo padInfo = {.setKeyY = 1, .size_mb = info->entries[i].size_mb};
memcpy(padInfo.CTR, info->entries[i].CTR, 16);
memcpy(padInfo.keyY, info->entries[i].keyY, 16);
memcpy(padInfo.filename, info->entries[i].filename, 112);
if(info->entries[i].uses7xCrypto)
padInfo.keyslot = 0x25;
else
padInfo.keyslot = 0x2C;
result = CreatePad(&padInfo, i);
if (result) return 1;
}
return 0;
}
uint32_t SdPadgen()
{
size_t bytesRead;
uint32_t result;
File fp;
SdInfo *info = (SdInfo*)0x20316000;
uint8_t movable_seed[0x120] = {0};
const char *filename = "/movable.sed";
wchar_t wfilename[13];
mbstowcs(wfilename, filename, 13);
// Load console 0x34 keyY from movable.sed if present on SD card
if (FileOpen(&fp, filename, 0)) {
bytesRead = FileRead(&fp, &movable_seed, 0x120, 0);
FileClose(&fp);
if (bytesRead != 0x120) {
print(strings[STR_WRONG], filename+1, strings[STR_SIZE]);
return 1;
}
if (memcmp(movable_seed, "SEED", 4) != 0) {
print(strings[STR_WRONG], filename+1, strings[STR_CONTENT]);
return 1;
}
setup_aeskey(0x34, AES_BIG_INPUT|AES_NORMAL_INPUT, &movable_seed[0x110]);
use_aeskey(0x34);
}
filename = "/SDinfo.bin";
if (!FileOpen(&fp, filename, 0)) {
print(strings[STR_ERROR_OPENING], filename+1);
return 1;
}
bytesRead = FileRead(&fp, info, 4, 0);
if (!info->n_entries || info->n_entries > MAXENTRIES) {
print(strings[STR_WRONG], filename+1, strings[STR_ENTRIES_COUNT]);
return 1;
}
print(strings[STR_PROCESSING], wfilename+1);
ConsoleShow();
bytesRead = FileRead(&fp, info->entries, info->n_entries * sizeof(SdInfoEntry), 4);
FileClose(&fp);
for(uint32_t i = 0; i < info->n_entries; i++) {
PadInfo padInfo = {.keyslot = 0x34, .setKeyY = 0, .size_mb = info->entries[i].size_mb};
memcpy(padInfo.CTR, info->entries[i].CTR, 16);
memcpy(padInfo.filename, info->entries[i].filename, 180);
result = CreatePad(&padInfo, i);
if (result)
return 1;
}
return 0;
}
static const uint8_t zero_buf[16] __attribute__((aligned(16))) = {0};
uint32_t CreatePad(PadInfo *info, int index)
{
File pf;
#define BUFFER_ADDR ((volatile uint8_t*)0x21000000)
#define BLOCK_SIZE (4*1024*1024)
if (!FileOpen(&pf, info->filename, 1))
return 1;
if(info->setKeyY != 0)
setup_aeskey(info->keyslot, AES_BIG_INPUT|AES_NORMAL_INPUT, info->keyY);
use_aeskey(info->keyslot);
uint8_t ctr[16] __attribute__((aligned(32)));
memcpy(ctr, info->CTR, 16);
uint32_t size_bytes = info->size_mb*1024*1024;
uint32_t size_100 = size_bytes/100;
uint32_t seekpos = 0;
for (uint32_t i = 0; i < size_bytes; i += BLOCK_SIZE) {
uint32_t j;
for (j = 0; (j < BLOCK_SIZE) && (i+j < size_bytes); j+= 16) {
set_ctr(AES_BIG_INPUT|AES_NORMAL_INPUT, ctr);
aes_decrypt((void*)zero_buf, (void*)BUFFER_ADDR+j, ctr, 1, AES_CTR_MODE);
add_ctr(ctr, 1);
}
print(strings[STR_GENERATING], strings[STR_PAD]);
print(L"%i : %i%%", index, (i+j)/size_100);
ConsolePrevLine();
ConsolePrevLine();
ConsoleShow();
FileWrite(&pf, (void*)BUFFER_ADDR, j, seekpos);
seekpos += j;
}
FileClose(&pf);
return 0;
}
