void exefs_print(exefs_context* ctx)
{
u32 i;
char sectname[9];
u32 sectoffset;
u32 sectsize;
fprintf(stdout, "\nExeFS:\n");
for(i=0; i<8; i++)
{
exefs_sectionheader* section = (exefs_sectionheader*)(ctx->header.section + i);
memset(sectname, 0, sizeof(sectname));
memcpy(sectname, section->name, 8);
sectoffset = getle32(section->offset);
sectsize = getle32(section->size);
if (sectsize)
{
fprintf(stdout, "Section name: %s\n", sectname);
fprintf(stdout, "Section offset: 0x%08x\n", sectoffset + 0x200);
fprintf(stdout, "Section size: 0x%08x\n", sectsize);
if (ctx->hashcheck[i] == Good)
memdump(stdout, "Section hash (GOOD): ", ctx->header.hashes[7-i], 0x20);
else if (ctx->hashcheck[i] == Fail)
memdump(stdout, "Section hash (FAIL): ", ctx->header.hashes[7-i], 0x20);
else
memdump(stdout, "Section hash: ", ctx->header.hashes[7-i], 0x20);
}
}
}
void ncch_get_counter(ctr_ncchheader header, unsigned char counter[16], unsigned char type)
{
unsigned int version = getle16(header.version);
unsigned int mediaunitsize = 0x200;
unsigned char* partitionid = header.partitionid;
unsigned int i;
unsigned int x = 0;
for(i = 0; i < 16; i++) counter[i] = 0x00;
if (version == 2 || version == 0)
{
for(i=0; i<8; i++)
counter[i] = partitionid[7-i];
counter[8] = type;
}
else if (version == 1)
{
if (type == NCCHTYPE_EXHEADER)
x = 0x200;
else if (type == NCCHTYPE_EXEFS)
x = getle32(header.exefsoffset) * mediaunitsize;
else if (type == NCCHTYPE_ROMFS)
x = getle32(header.romfsoffset) * mediaunitsize;
for(i=0; i<8; i++)
counter[i] = partitionid[i];
for(i=0; i<4; i++)
counter[12+i] = x>>((3-i)*8);
}
}
u32 IdentifyImage(const char* path) {
u8 header[0x200];
FIL file;
if (f_open(&file, path, FA_READ | FA_OPEN_EXISTING) != FR_OK)
return 0;
f_lseek(&file, 0);
f_sync(&file);
UINT fsize = f_size(&file);
UINT bytes_read;
if ((f_read(&file, header, 0x200, &bytes_read) != FR_OK) || (bytes_read != 0x200)) {
f_close(&file);
return 0;
}
f_close(&file);
if ((getbe32(header + 0x100) == 0x4E435344) && (getbe64(header + 0x110) == (u64) 0x0104030301000000) &&
(getbe64(header + 0x108) == (u64) 0) && (fsize >= 0x8FC8000)) {
return IMG_NAND;
} else if (getbe16(header + 0x1FE) == 0x55AA) { // migt be FAT or MBR
if ((strncmp((char*) header + 0x36, "FAT12 ", 8) == 0) || (strncmp((char*) header + 0x36, "FAT16 ", 8) == 0) ||
(strncmp((char*) header + 0x36, "FAT ", 8) == 0) || (strncmp((char*) header + 0x52, "FAT32 ", 8) == 0)) {
return IMG_FAT; // this is an actual FAT header
} else if (((getle32(header + 0x1BE + 0x8) + getle32(header + 0x1BE + 0xC)) < (fsize / 0x200)) && // check file size
(getle32(header + 0x1BE + 0x8) > 0) && (getle32(header + 0x1BE + 0xC) >= 0x800) && // check first partition sanity
((header[0x1BE + 0x4] == 0x1) || (header[0x1BE + 0x4] == 0x4) || (header[0x1BE + 0x4] == 0x6) || // filesystem type
(header[0x1BE + 0x4] == 0xB) || (header[0x1BE + 0x4] == 0xC) || (header[0x1BE + 0x4] == 0xE))) {
return IMG_FAT; // this might be an MBR -> give it the benefit of doubt
}
}
return 0;
}
int firm_verify(firm_context* ctx, u32 flags)
{
unsigned int i;
u32 offset;
u32 size;
u8 buffer[16 * 1024];
u8 hash[0x20];
for(i=0; i<4; i++)
{
firm_sectionheader* section = (firm_sectionheader*)(ctx->header.section + i);
offset = getle32(section->offset);
size = getle32(section->size);
if (size == 0)
return 0;
fseek(ctx->file, ctx->offset + offset, SEEK_SET);
ctr_sha_256_init(&ctx->sha);
while(size)
{
u32 max = sizeof(buffer);
if (max > size)
max = size;
if (max != fread(buffer, 1, max, ctx->file))
{
fprintf(stdout, "Error reading input file\n");
goto clean;
}
ctr_sha_256_update(&ctx->sha, buffer, max);
size -= max;
}
ctr_sha_256_finish(&ctx->sha, hash);
if (memcmp(hash, section->hash, 0x20) == 0)
ctx->hashcheck[i] = Good;
else
ctx->hashcheck[i] = Fail;
}
clean:
return 0;
}
void romfs_print(romfs_context* ctx)
{
u32 i;
fprintf(stdout, "\nRomFS:\n");
fprintf(stdout, "Header size: 0x%08X\n", getle32(ctx->infoheader.headersize));
for(i=0; i<4; i++)
{
fprintf(stdout, "Section %d offset: 0x%08"PRIX64"\n", i, ctx->offset + 0x1000 + getle32(ctx->infoheader.section[i].offset));
fprintf(stdout, "Section %d size: 0x%08X\n", i, getle32(ctx->infoheader.section[i].size));
}
fprintf(stdout, "Data offset: 0x%08"PRIX64"\n", ctx->offset + 0x1000 + getle32(ctx->infoheader.dataoffset));
}
int exefs_verify(exefs_context* ctx, u32 index, u32 flags)
{
exefs_sectionheader* section = (exefs_sectionheader*)(ctx->header.section + index);
u32 offset;
u32 size;
u8 buffer[16 * 1024];
u8 hash[0x20];
offset = getle32(section->offset) + sizeof(exefs_header);
size = getle32(section->size);
if (size == 0)
return 0;
fseek(ctx->file, ctx->offset + offset, SEEK_SET);
ctr_init_counter(&ctx->aes, ctx->key, ctx->counter);
ctr_add_counter(&ctx->aes, offset / 0x10);
ctr_sha_256_init(&ctx->sha);
while(size)
{
u32 max = sizeof(buffer);
if (max > size)
max = size;
if (max != fread(buffer, 1, max, ctx->file))
{
fprintf(stdout, "Error reading input file\n");
goto clean;
}
if (ctx->encrypted)
ctr_crypt_counter(&ctx->aes, buffer, buffer, max);
ctr_sha_256_update(&ctx->sha, buffer, max);
size -= max;
}
ctr_sha_256_finish(&ctx->sha, hash);
if (memcmp(hash, ctx->header.hashes[7-index], 0x20) == 0)
return 1;
clean:
return 0;
}
void ivfc_print(ivfc_context* ctx)
{
u32 i;
ivfc_header* header = &ctx->header;
fprintf(stdout, "\nIVFC:\n");
fprintf(stdout, "Header: %.4s\n", header->magic);
fprintf(stdout, "Id: %08x\n", getle32(header->id));
for(i=0; i<ctx->levelcount; i++)
{
ivfc_level* level = ctx->level + i;
fprintf(stdout, "\n");
if (level->hashcheck == Unchecked)
fprintf(stdout, "Level %d: \n", i);
else
fprintf(stdout, "Level %d (%s): \n", i, level->hashcheck == Good? "GOOD" : "FAIL");
fprintf(stdout, " Data offset: 0x%08"PRIx64"\n", ctx->offset + level->dataoffset);
fprintf(stdout, " Data size: 0x%08"PRIx64"\n", level->datasize);
fprintf(stdout, " Hash offset: 0x%08"PRIx64"\n", ctx->offset + level->hashoffset);
fprintf(stdout, " Hash block size: 0x%08x\n", level->hashblocksize);
}
}
u32 CheckEmuNand(void)
{
u8* buffer = BUFFER_ADDRESS;
u32 nand_size_sectors = getMMCDevice(0)->total_size;
u32 nand_offset;
if (emunand_no > 0) {
if (nand_size_sectors > EMUNAND_MULTI_OFFSET_O3DS) {
nand_offset = EMUNAND_MULTI_OFFSET_N3DS * (emunand_no - 1 );
} else {
nand_offset = EMUNAND_MULTI_OFFSET_O3DS * (emunand_no - 1 );
}
} else {
nand_offset = 0;
}
// check the MBR for presence of EmuNAND
sdmmc_sdcard_readsectors(0, 1, buffer);
if (nand_offset+nand_size_sectors > getle32(buffer + 0x1BE + 0x8))
return EMUNAND_NOT_READY;
// check for Gateway type EmuNAND
sdmmc_sdcard_readsectors(nand_offset+nand_size_sectors, 1, buffer);
if (memcmp(buffer + 0x100, "NCSD", 4) == 0)
return EMUNAND_GATEWAY;
// check for RedNAND type EmuNAND
sdmmc_sdcard_readsectors(nand_offset + 1, 1, buffer);
if (memcmp(buffer + 0x100, "NCSD", 4) == 0)
return EMUNAND_REDNAND;
// EmuNAND ready but not set up
return EMUNAND_READY;
}
void tik_print(tik_context* ctx)
{
int i;
eticket* tik = &ctx->tik;
fprintf(stdout, "\nTicket content:\n");
fprintf(stdout,
"Signature Type: %08x\n"
"Issuer: %s\n",
getle32(tik->sig_type), tik->issuer
);
fprintf(stdout, "Signature:\n");
hexdump(tik->signature, 0x100);
fprintf(stdout, "\n");
memdump(stdout, "Encrypted Titlekey: ", tik->encrypted_title_key, 0x10);
if (settings_get_common_keyX(ctx->usersettings))
memdump(stdout, "Decrypted Titlekey: ", ctx->titlekey, 0x10);
memdump(stdout, "Ticket ID: ", tik->ticket_id, 0x08);
fprintf(stdout, "Ticket Version: %d\n", getle16(tik->ticket_version));
memdump(stdout, "Title ID: ", tik->title_id, 0x08);
fprintf(stdout, "Common Key Index: %d\n", tik->commonkey_idx);
fprintf(stdout, "Content permission map:\n");
for(i = 0; i < 0x40; i++) {
printf(" %02x", tik->content_permissions[i]);
if ((i+1) % 8 == 0)
printf("\n");
}
printf("\n");
}
void ncsd_process(ncsd_context* ctx, u32 actions)
{
fseek(ctx->file, ctx->offset, SEEK_SET);
fread(&ctx->header, 1, 0x200, ctx->file);
if (getle32(ctx->header.magic) != MAGIC_NCSD)
{
fprintf(stdout, "Error, NCSD segment corrupted\n");
return;
}
if (actions & VerifyFlag)
{
if (ctx->usersettings)
ctx->headersigcheck = ncsd_signature_verify(&ctx->header, &ctx->usersettings->keys.ncsdrsakey);
}
if (actions & InfoFlag)
ncsd_print(ctx);
ncch_set_file(&ctx->ncch, ctx->file);
ncch_set_offset(&ctx->ncch, 0x4000);
ncch_set_size(&ctx->ncch, ctx->size - 0x4000);
ncch_set_usersettings(&ctx->ncch, ctx->usersettings);
ncch_process(&ctx->ncch, actions);
}
void ncsd_process(ncsd_context* ctx, u32 actions)
{
fseeko64(ctx->file, ctx->offset, SEEK_SET);
fread(&ctx->header, 1, 0x200, ctx->file);
if (getle32(ctx->header.magic) != MAGIC_NCSD)
{
fprintf(stdout, "Error, NCSD segment corrupted\n");
return;
}
if (actions & VerifyFlag)
{
if (ctx->usersettings)
ctx->headersigcheck = ncsd_signature_verify(&ctx->header, &ctx->usersettings->keys.ncsdrsakey);
}
if (actions & InfoFlag)
ncsd_print(ctx);
if(ctx->ncch_index > 7 || ctx->header.partitiongeometry[ctx->ncch_index].size == 0)
{
fprintf(stderr," ERROR NCSD partition %d, does not exist\n",ctx->ncch_index);
return;
}
ncch_set_file(&ctx->ncch, ctx->file);
ncch_set_offset(&ctx->ncch, ctx->header.partitiongeometry[ctx->ncch_index].offset * ncsd_get_mediaunit_size(ctx));
ncch_set_size(&ctx->ncch, ctx->header.partitiongeometry[ctx->ncch_index].size * ncsd_get_mediaunit_size(ctx));
ncch_set_usersettings(&ctx->ncch, ctx->usersettings);
ncch_process(&ctx->ncch, actions);
}
void keyset_parse_seeddb(keyset* keys, char* path)
{
//keyset_parse_key128(&keys->seed, keytext, keylen);
FILE* fp = fopen(path, "rb");
if (fp == NULL)
{
printf("[ERROR] Failed to load SeedDB (failed to open file)\n");
return;
}
seeddb_header hdr;
fread(&hdr, sizeof(seeddb_header), 1, fp);
keys->seed_num = getle32(hdr.n_entries);
for (u32 i = 0; i < 0xC; i++)
{
if (hdr.padding[i] != 0x00)
{
printf("[ERROR] SeedDB is corrupt. (padding malformed)\n");
return;
}
}
keys->seed_db = (seeddb_entry*)calloc(keys->seed_num, sizeof(seeddb_entry));
fread(keys->seed_db, keys->seed_num * sizeof(seeddb_entry), 1, fp);
}
uint32_t getsize(int fd)
{
int len;
uint8_t buf[4];
len=read(fd, buf, 4);
return getle32(buf);
}
int main(int argc, char *argv[])
{
uint32_t olen;
long ilen;
unsigned long offs;
FILE *f;
if (argc < 2) {
fprintf(stderr, "Usage: %s compressed_file\n", argv[0]);
return 1;
}
/* Get the information for the compressed kernel image first */
f = fopen(argv[1], "r");
if (!f) {
perror(argv[1]);
return 1;
}
if (fseek(f, -4L, SEEK_END)) {
perror(argv[1]);
}
fread(&olen, sizeof olen, 1, f);
ilen = ftell(f);
olen = getle32(&olen);
fclose(f);
/*
* Now we have the input (compressed) and output (uncompressed)
* sizes, compute the necessary decompression offset...
*/
offs = (olen > ilen) ? olen - ilen : 0;
offs += olen >> 12; /* Add 8 bytes for each 32K block */
offs += 64*1024 + 128; /* Add 64K + 128 bytes slack */
offs = (offs+4095) & ~4095; /* Round to a 4K boundary */
printf(".section \".rodata..compressed\",\"a\",@progbits\n");
printf(".globl z_input_len\n");
printf("z_input_len = %lu\n", ilen);
printf(".globl z_output_len\n");
printf("z_output_len = %lu\n", (unsigned long)olen);
printf(".globl z_extract_offset\n");
printf("z_extract_offset = 0x%lx\n", offs);
/* z_extract_offset_negative allows simplification of head_32.S */
printf(".globl z_extract_offset_negative\n");
printf("z_extract_offset_negative = -0x%lx\n", offs);
printf(".globl input_data, input_data_end\n");
printf("input_data:\n");
printf(".incbin \"%s\"\n", argv[1]);
printf("input_data_end:\n");
return 0;
}
void romfs_visit_file(romfs_context* ctx, u32 fileoffset, u32 depth, u32 actions, const oschar_t* rootpath)
{
u32 siblingoffset = 0;
oschar_t* currentpath = NULL;
romfs_fileentry* entry = &ctx->fileentry;
if (!romfs_fileblock_readentry(ctx, fileoffset, entry))
return;
// fprintf(stdout, "%08X %08X %016llX %016llX %08X ",
// getle32(entry->parentdiroffset), getle32(entry->siblingoffset), ctx->datablockoffset+getle64(entry->dataoffset),
// getle64(entry->datasize), getle32(entry->unknown));
// fwprintf(stdout, L"%ls\n", entry->name);
if (rootpath && os_strlen(rootpath))
{
currentpath = os_AppendUTF16StrToPath(rootpath, (const utf16char_t*)entry->name);
if (currentpath)
{
fputs("Saving ", stdout);
os_fputs(currentpath, stdout);
fputs("...\n", stdout);
romfs_extract_datafile(ctx, getle64(entry->dataoffset), getle64(entry->datasize), currentpath);
}
else
{
fputs("Error creating file in root ", stderr);
os_fputs(rootpath, stderr);
fputs("\n", stderr);
return;
}
}
else
{
currentpath = os_CopyConvertUTF16Str((const utf16char_t*)entry->name);
if (settings_get_list_romfs_files(ctx->usersettings))
{
u32 i;
for(i=0; i<depth; i++)
printf(" ");
os_fputs(currentpath, stdout);
fputs("\n", stdout);
}
free(currentpath);
currentpath = NULL;
}
siblingoffset = getle32(entry->siblingoffset);
if (siblingoffset != (~0))
romfs_visit_file(ctx, siblingoffset, depth, actions, rootpath);
free(currentpath);
}
int check_riff(avi_context *ac, uint8_t *buf, int len)
{
uint32_t tag;
int c = 0;
if (len < 12) return -1;
tag = getle32(buf);
if (tag != TAG_IT('R','I','F','F')) return -1;
c+=4;
ac->riff_end = getle32(buf+c);
c+=4;
tag = getle32(buf+c);
if (tag != TAG_IT('A','V','I',' ') &&
tag != TAG_IT('A','V','I','X') ) return -1;
return c+4;
}
uint8_t* decryptFirmTitleNcch(uint8_t* title, unsigned int size){
ctr_ncchheader NCCH;
uint8_t CTR[16];
PartitionInfo INFO;
NCCH = *((ctr_ncchheader*)title);
if(memcmp(NCCH.magic, "NCCH", 4) != 0) return NULL;
ncch_get_counter(NCCH, CTR, 2);
INFO.ctr = CTR; INFO.buffer = title + getle32(NCCH.exefsoffset)*0x200; INFO.keyY = NCCH.signature; INFO.size = size; INFO.keyslot = 0x2C;
DecryptPartition(&INFO);
uint8_t* firm = (uint8_t*)(INFO.buffer + 0x200);
return firm;
}
void ncsd_print(ncsd_context* ctx)
{
char magic[5];
ctr_ncsdheader* header = &ctx->header;
unsigned int i;
unsigned int mediaunitsize = (unsigned int) ncsd_get_mediaunit_size(ctx);
memcpy(magic, header->magic, 4);
magic[4] = 0;
fprintf(stdout, "Header: %s\n", magic);
if (ctx->headersigcheck == Unchecked)
memdump(stdout, "Signature: ", header->signature, 0x100);
else if (ctx->headersigcheck == Good)
memdump(stdout, "Signature (GOOD): ", header->signature, 0x100);
else
memdump(stdout, "Signature (FAIL): ", header->signature, 0x100);
fprintf(stdout, "Media size: 0x%08x\n", getle32(header->mediasize));
fprintf(stdout, "Media id: %016"PRIx64"\n", getle64(header->mediaid));
//memdump(stdout, "Partition FS type: ", header->partitionfstype, 8);
//memdump(stdout, "Partition crypt type: ", header->partitioncrypttype, 8);
//memdump(stdout, "Partition offset/size: ", header->partitionoffsetandsize, 0x40);
fprintf(stdout, "\n");
for(i=0; i<8; i++)
{
u32 partitionoffset = header->partitiongeometry[i].offset * mediaunitsize;
u32 partitionsize = header->partitiongeometry[i].size * mediaunitsize;
if (partitionsize != 0)
{
fprintf(stdout, "Partition %d \n", i);
memdump(stdout, " Id: ", header->partitionid+i*8, 8);
fprintf(stdout, " Area: 0x%08X-0x%08X\n", partitionoffset, partitionoffset+partitionsize);
fprintf(stdout, " Filesystem: %02X\n", header->partitionfstype[i]);
fprintf(stdout, " Encryption: %02X\n", header->partitioncrypttype[i]);
fprintf(stdout, "\n");
}
}
memdump(stdout, "Extended header hash: ", header->extendedheaderhash, 0x20);
memdump(stdout, "Additional header size: ", header->additionalheadersize, 4);
memdump(stdout, "Sector zero offset: ", header->sectorzerooffset, 4);
memdump(stdout, "Flags: ", header->flags, 8);
fprintf(stdout, " > Mediaunit size: 0x%X\n", mediaunitsize);
fprintf(stdout, " > Mediatype: %s\n", ncsd_print_mediatype(header->flags[5]));
fprintf(stdout, " > Card Device: %s\n", ncsd_print_carddevice(header->flags[3] | header->flags[7]));
}
int layout_addsection(u32 sectionid, u8 *section_payload, u32 section_payloadsize)
{
if(layout_pos+8+section_payloadsize > filebuf_size)
{
printf("This additional layout section is too large.\n");
return 5;
}
putle32(&filebuf[layout_pos+0], sectionid);
putle32(&filebuf[layout_pos+4], 8+section_payloadsize);
if(section_payload)memcpy(&filebuf[layout_pos+8], section_payload, section_payloadsize);
layout_pos+= 8+section_payloadsize;
putle32(layout_header->total_sections, getle32(layout_header->total_sections) + 1);
return 0;
}
void firm_print(firm_context* ctx)
{
u32 i;
u32 address;
u32 type;
u32 offset;
u32 size;
u32 entrypointarm11 = getle32(ctx->header.entrypointarm11);
u32 entrypointarm9 = getle32(ctx->header.entrypointarm9);
fprintf(stdout, "\nFIRM:\n");
if (ctx->headersigcheck == Unchecked)
memdump(stdout, "Signature: ", ctx->header.signature, 0x100);
else if (ctx->headersigcheck == Good)
memdump(stdout, "Signature (GOOD): ", ctx->header.signature, 0x100);
else
memdump(stdout, "Signature (FAIL): ", ctx->header.signature, 0x100);
fprintf(stdout, "\n");
fprintf(stdout, "Entrypoint ARM9: 0x%08X\n", entrypointarm9);
fprintf(stdout, "Entrypoint ARM11: 0x%08X\n", entrypointarm11);
fprintf(stdout, "\n");
for(i=0; i<4; i++)
{
firm_sectionheader* section = (firm_sectionheader*)(ctx->header.section + i);
offset = getle32(section->offset);
size = getle32(section->size);
address = getle32(section->address);
type = getle32(section->type);
if (size)
{
fprintf(stdout, "Section %d \n", i);
fprintf(stdout, " Type: %s\n", type==0? "ARM9" : type==1? "ARM11" : "UNKNOWN");
fprintf(stdout, " Address: 0x%08X\n", address);
fprintf(stdout, " Offset: 0x%08X\n", offset);
fprintf(stdout, " Size: 0x%08X\n", size);
if (ctx->hashcheck[i] == Good)
memdump(stdout, " Hash (GOOD): ", section->hash, 0x20);
else if (ctx->hashcheck[i] == Fail)
memdump(stdout, " Hash (FAIL): ", section->hash, 0x20);
else
memdump(stdout, " Hash: ", section->hash, 0x20);
}
}
}
int romfs_fileblock_readentry(romfs_context* ctx, u32 fileoffset, romfs_fileentry* entry)
{
u32 size_without_name = sizeof(romfs_fileentry) - ROMFS_MAXNAMESIZE;
u32 namesize;
if (!ctx->fileblock)
return 0;
if (!romfs_fileblock_read(ctx, fileoffset, size_without_name, entry))
return 0;
namesize = getle32(entry->namesize);
if (namesize > (ROMFS_MAXNAMESIZE-2))
namesize = (ROMFS_MAXNAMESIZE-2);
memset(entry->name + namesize, 0, 2);
if (!romfs_fileblock_read(ctx, fileoffset + size_without_name, namesize, entry->name))
return 0;
return 1;
}
u32 SeekTitleInNandDb(u32* tid_low, u32* tmd_id, TitleListInfo* title_info)
{
PartitionInfo* ctrnand_info = GetPartitionInfo(P_CTRNAND);
u8* titledb = (u8*) 0x20316000;
u32 offset_db;
u32 size_db;
if (SeekFileInNand(&offset_db, &size_db, "DBS TITLE DB ", ctrnand_info) != 0)
return 1; // database not found
if (size_db != 0x64C00)
return 1; // bad database size
if (DecryptNandToMem(titledb, offset_db, size_db, ctrnand_info) != 0)
return 1;
u8* entry_table = titledb + 0x39A80;
u8* info_data = titledb + 0x44B80;
if ((getle32(entry_table + 0) != 2) || (getle32(entry_table + 4) != 3))
return 1; // magic number not found
*tid_low = 0;
for (u32 i = 0; i < 1000; i++) {
u8* entry = entry_table + 0xA8 + (0x2C * i);
u8* info = info_data + (0x80 * i);
u32 r;
if (getle32(entry + 0xC) != title_info->tid_high) continue; // not a title id match
if (getle32(entry + 0x4) != 1) continue; // not an active entry
if ((getle32(entry + 0x18) - i != 0x162) || (getle32(entry + 0x1C) != 0x80) || (getle32(info + 0x08) != 0x40)) continue; // fishy title info / offset
for (r = 0; r < 6; r++) {
if ((title_info->tid_low[r] != 0) && (getle32(entry + 0x8) == title_info->tid_low[r])) break;
}
if (r >= 6) continue;
*tmd_id = getle32(info + 0x14);
*tid_low = title_info->tid_low[r];
break;
}
return (*tid_low) ? 0 : 1;
}
u32 CheckEmuNand(void)
{
u8* buffer = BUFFER_ADDRESS;
u32 nand_size_sectors = getMMCDevice(0)->total_size;
// check the MBR for presence of EmuNAND
sdmmc_sdcard_readsectors(0, 1, buffer);
if (nand_size_sectors > getle32(buffer + 0x1BE + 0x8))
return EMUNAND_NOT_READY;
// check for Gateway type EmuNAND
sdmmc_sdcard_readsectors(nand_size_sectors, 1, buffer);
if (memcmp(buffer + 0x100, "NCSD", 4) == 0)
return EMUNAND_GATEWAY;
// check for RedNAND type EmuNAND
sdmmc_sdcard_readsectors(1, 1, buffer);
if (memcmp(buffer + 0x100, "NCSD", 4) == 0)
return EMUNAND_REDNAND;
// EmuNAND ready but not set up
return EMUNAND_READY;
}
void firm_process(firm_context* ctx, u32 actions)
{
u32 i;
fseek(ctx->file, ctx->offset, SEEK_SET);
fread(&ctx->header, 1, sizeof(firm_header), ctx->file);
if (getle32(ctx->header.magic) != MAGIC_FIRM)
{
fprintf(stdout, "Error, FIRM segment corrupted\n");
return;
}
if (actions & VerifyFlag)
{
firm_verify(ctx, actions);
firm_signature_verify(ctx);
}
if (actions & InfoFlag)
{
firm_print(ctx);
}
if (actions & ExtractFlag)
{
filepath* dirpath = settings_get_firm_dir_path(ctx->usersettings);
if (dirpath && dirpath->valid)
{
makedir(dirpath->pathname);
for(i=0; i<4; i++)
firm_save(ctx, i, actions);
}
}
}
uint8_t* decryptFirmTitleNcch(uint8_t* title, size_t *size)
{
const size_t sector = 512;
const size_t header = 512;
ctr_ncchheader NCCH;
uint8_t CTR[16];
PartitionInfo INFO;
NCCH = *((ctr_ncchheader*)title);
if(memcmp(NCCH.magic, "NCCH", 4) != 0) return NULL;
ncch_get_counter(NCCH, CTR, 2);
INFO.ctr = CTR; INFO.buffer = title + getle32(NCCH.exefsoffset)*sector; INFO.keyY = NCCH.signature; INFO.size = getle32(NCCH.exefssize)*sector; INFO.keyslot = 0x2C;
DecryptPartition(&INFO);
if (size != NULL)
*size = INFO.size - header;
uint8_t* firm = (uint8_t*)(INFO.buffer + header);
if (getMpInfo() == MPINFO_KTR)
if (decryptFirmKtrArm9(firm))
return NULL;
return firm;
}
void ivfc_process(ivfc_context* ctx, u32 actions)
{
ivfc_fseek(ctx, ctx->offset);
ivfc_fread(ctx, &ctx->header, 1, sizeof(ivfc_header));
if (getle32(ctx->header.magic) != MAGIC_IVFC)
{
fprintf(stdout, "Error, IVFC segment corrupted\n");
return;
}
if (getle32(ctx->header.id) == 0x10000)
{
ctx->levelcount = 3;
ctx->level[2].hashblocksize = 1 << getle32(ctx->header.level3.blocksize);
ctx->level[1].hashblocksize = 1 << getle32(ctx->header.level2.blocksize);
ctx->level[0].hashblocksize = 1 << getle32(ctx->header.level1.blocksize);
ctx->bodyoffset = align64(IVFC_HEADER_SIZE + getle32(ctx->header.masterhashsize), ctx->level[2].hashblocksize);
ctx->bodysize = getle64(ctx->header.level3.hashdatasize);
ctx->level[2].dataoffset = ctx->bodyoffset;
ctx->level[2].datasize = align64(ctx->bodysize, ctx->level[2].hashblocksize);
ctx->level[0].dataoffset = ctx->level[2].dataoffset + ctx->level[2].datasize;
ctx->level[0].datasize = align64(getle64(ctx->header.level1.hashdatasize), ctx->level[0].hashblocksize);
ctx->level[1].dataoffset = ctx->level[0].dataoffset + ctx->level[0].datasize;
ctx->level[1].datasize = align64(getle64(ctx->header.level2.hashdatasize), ctx->level[1].hashblocksize);
ctx->level[0].hashoffset = IVFC_HEADER_SIZE;
ctx->level[1].hashoffset = ctx->level[0].dataoffset;
ctx->level[2].hashoffset = ctx->level[1].dataoffset;
}
if (actions & VerifyFlag)
ivfc_verify(ctx, actions);
if (actions & InfoFlag)
ivfc_print(ctx);
}
void romfs_process(romfs_context* ctx, u32 actions)
{
u32 dirblockoffset = 0;
u32 dirblocksize = 0;
u32 fileblockoffset = 0;
u32 fileblocksize = 0;
ivfc_set_offset(&ctx->ivfc, ctx->offset);
ivfc_set_size(&ctx->ivfc, ctx->size);
ivfc_set_file(&ctx->ivfc, ctx->file);
ivfc_set_usersettings(&ctx->ivfc, ctx->usersettings);
ivfc_set_counter(&ctx->ivfc, ctx->counter);
ivfc_set_key(&ctx->ivfc, ctx->key);
ivfc_set_encrypted(&ctx->ivfc, ctx->encrypted);
ivfc_process(&ctx->ivfc, actions);
romfs_fseek(ctx, ctx->offset);
romfs_fread(ctx, &ctx->header, 1, sizeof(romfs_header));
if (getle32(ctx->header.magic) != MAGIC_IVFC)
{
fprintf(stdout, "Error, RomFS corrupted\n");
return;
}
ctx->infoblockoffset = (u32) (ctx->offset + 0x1000);
romfs_fseek(ctx, ctx->infoblockoffset);
romfs_fread(ctx, &ctx->infoheader, 1, sizeof(romfs_infoheader));
if (getle32(ctx->infoheader.headersize) != sizeof(romfs_infoheader))
{
fprintf(stderr, "Error, info header mismatch\n");
return;
}
dirblockoffset = ctx->infoblockoffset + getle32(ctx->infoheader.section[1].offset);
dirblocksize = getle32(ctx->infoheader.section[1].size);
fileblockoffset = ctx->infoblockoffset + getle32(ctx->infoheader.section[3].offset);
fileblocksize = getle32(ctx->infoheader.section[3].size);
u32 hdrsize = getle32(ctx->infoheader.dataoffset);
u8 *block = malloc(hdrsize);
romfs_fseek(ctx, ctx->infoblockoffset);
romfs_fread(ctx, block, hdrsize, 1);
ctx->dirblock = malloc(dirblocksize);
ctx->dirblocksize = dirblocksize;
if(ctx->dirblock)
memcpy(ctx->dirblock, block + getle32(ctx->infoheader.section[1].offset), dirblocksize);
ctx->fileblock = malloc(fileblocksize);
ctx->fileblocksize = fileblocksize;
if (ctx->fileblock)
memcpy(ctx->fileblock, block + getle32(ctx->infoheader.section[3].offset), fileblocksize);
free(block);
ctx->datablockoffset = ctx->infoblockoffset + getle32(ctx->infoheader.dataoffset);
if (actions & InfoFlag)
romfs_print(ctx);
if (settings_get_romfs_dir_path(ctx->usersettings)->valid)
ctx->extractdir = os_CopyConvertCharStr(settings_get_romfs_dir_path(ctx->usersettings)->pathname);
else
ctx->extractdir = NULL;
romfs_visit_dir(ctx, 0, 0, actions, ctx->extractdir);
free(ctx->extractdir);
}
void romfs_visit_dir(romfs_context* ctx, u32 diroffset, u32 depth, u32 actions, const oschar_t* rootpath)
{
u32 siblingoffset;
u32 childoffset;
u32 fileoffset;
oschar_t* currentpath;
romfs_direntry* entry = &ctx->direntry;
if (!romfs_dirblock_readentry(ctx, diroffset, entry))
return;
// fprintf(stdout, "%08X %08X %08X %08X %08X ",
// getle32(entry->parentoffset), getle32(entry->siblingoffset), getle32(entry->childoffset),
// getle32(entry->fileoffset), getle32(entry->weirdoffset));
// fwprintf(stdout, L"%ls\n", entry->name);
if (rootpath && os_strlen(rootpath))
{
if (utf16_strlen((const utf16char_t*)entry->name) > 0)
currentpath = os_AppendUTF16StrToPath(rootpath, (const utf16char_t*)entry->name);
else // root dir, use the provided extract path instead of the empty root name.
currentpath = os_CopyStr(rootpath);
if (currentpath)
{
os_makedir(currentpath);
}
else
{
fputs("Error creating directory in root ", stderr);
os_fputs(rootpath, stderr);
fputs("\n", stderr);
return;
}
}
else
{
currentpath = os_CopyConvertUTF16Str((const utf16char_t*)entry->name);
if (settings_get_list_romfs_files(ctx->usersettings))
{
u32 i;
for(i=0; i<depth; i++)
printf(" ");
os_fputs(currentpath, stdout);
fputs("\n", stdout);
}
free(currentpath);
currentpath = NULL;
}
siblingoffset = getle32(entry->siblingoffset);
childoffset = getle32(entry->childoffset);
fileoffset = getle32(entry->fileoffset);
if (fileoffset != (~0))
romfs_visit_file(ctx, fileoffset, depth+1, actions, currentpath);
if (childoffset != (~0))
romfs_visit_dir(ctx, childoffset, depth+1, actions, currentpath);
if (siblingoffset != (~0))
romfs_visit_dir(ctx, siblingoffset, depth, actions, rootpath);
free(currentpath);
}
void exefs_save(exefs_context* ctx, u32 index, u32 flags)
{
exefs_sectionheader* section = (exefs_sectionheader*)(ctx->header.section + index);
char outfname[MAX_PATH];
char name[64];
u32 offset;
u32 size;
FILE* fout;
u32 compressedsize = 0;
u32 decompressedsize = 0;
u8* compressedbuffer = 0;
u8* decompressedbuffer = 0;
filepath* dirpath = 0;
offset = getle32(section->offset) + sizeof(exefs_header);
size = getle32(section->size);
dirpath = settings_get_exefs_dir_path(ctx->usersettings);
if (size == 0 || dirpath == 0 || dirpath->valid == 0)
return;
if (size >= ctx->size)
{
fprintf(stderr, "Error, ExeFS section %d size invalid\n", index);
return;
}
memset(name, 0, sizeof(name));
memcpy(name, section->name, 8);
memcpy(outfname, dirpath->pathname, MAX_PATH);
strcat(outfname, "/");
if (name[0] == '.')
strcat(outfname, name+1);
else
strcat(outfname, name);
strcat(outfname, ".bin");
fout = fopen(outfname, "wb");
if (fout == 0)
{
fprintf(stderr, "Error, failed to create file %s\n", outfname);
goto clean;
}
fseek(ctx->file, ctx->offset + offset, SEEK_SET);
ctr_init_counter(&ctx->aes, ctx->key, ctx->counter);
ctr_add_counter(&ctx->aes, offset / 0x10);
if (index == 0 && (ctx->compressedflag || (flags & CompressCodeFlag)) && ((flags & RawFlag) == 0))
{
fprintf(stdout, "Decompressing section %s to %s...\n", name, outfname);
compressedsize = size;
compressedbuffer = malloc(compressedsize);
if (compressedbuffer == 0)
{
fprintf(stdout, "Error allocating memory\n");
goto clean;
}
if (compressedsize != fread(compressedbuffer, 1, compressedsize, ctx->file))
{
fprintf(stdout, "Error reading input file\n");
goto clean;
}
if (ctx->encrypted)
ctr_crypt_counter(&ctx->aes, compressedbuffer, compressedbuffer, compressedsize);
decompressedsize = lzss_get_decompressed_size(compressedbuffer, compressedsize);
decompressedbuffer = malloc(decompressedsize);
if (decompressedbuffer == 0)
{
fprintf(stdout, "Error allocating memory\n");
goto clean;
}
if (0 == lzss_decompress(compressedbuffer, compressedsize, decompressedbuffer, decompressedsize))
goto clean;
if (decompressedsize != fwrite(decompressedbuffer, 1, decompressedsize, fout))
{
fprintf(stdout, "Error writing output file\n");
goto clean;
}
}
else
{
u8 buffer[16 * 1024];
fprintf(stdout, "Saving section %s to %s...\n", name, outfname);
while(size)
{
u32 max = sizeof(buffer);
if (max > size)
max = size;
if (max != fread(buffer, 1, max, ctx->file))
{
fprintf(stdout, "Error reading input file\n");
goto clean;
}
if (ctx->encrypted)
ctr_crypt_counter(&ctx->aes, buffer, buffer, max);
if (max != fwrite(buffer, 1, max, fout))
{
fprintf(stdout, "Error writing output file\n");
goto clean;
}
size -= max;
}
}
clean:
free(compressedbuffer);
free(decompressedbuffer);
return;
}
uint32_t getsize_buf(uint8_t *buf)
{
return getle32(buf);
}
