mirror of
https://github.com/DarkStore-3DS/Project_CTR.git
synced 2026-07-03 00:39:14 +00:00
jakcron
1142 lines
35 KiB
C
1142 lines
35 KiB
C
#include "lib.h"
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#include "aes_keygen.h"
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#include "ncch_build.h"
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#include "exheader_build.h"
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#include "exheader_read.h"
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#include "code.h"
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#include "exefs_build.h"
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#include "exefs_read.h"
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#include "romfs.h"
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#include "titleid.h"
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#include "ncch_logo.h" // Contains Logos
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const u32 NCCH_BLOCK_SIZE = 0x200;
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const char *DEFAULT_PRODUCT_CODE = "CTR-P-CTAP";
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const char *DEFAULT_MAKER_CODE = "00";
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// Private Prototypes
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int SignCFA(ncch_hdr *hdr, keys_struct *keys);
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int CheckCFASignature(ncch_hdr *hdr, keys_struct *keys);
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int SignCXI(ncch_hdr *hdr, keys_struct *keys);
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int CheckCXISignature(ncch_hdr *hdr, u8 *pubk);
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void FreeNcchSettings(ncch_settings *set);
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int GetNcchSettings(ncch_settings *ncchset, user_settings *usrset);
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int GetBasicOptions(ncch_settings *ncchset, user_settings *usrset);
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int CreateInputFilePtrs(ncch_settings *ncchset, user_settings *usrset);
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int ImportNonCodeExeFsSections(ncch_settings *ncchset);
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int ImportLogo(ncch_settings *ncchset);
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int SetupNcch(ncch_settings *ncchset, romfs_buildctx *romfs);
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int FinaliseNcch(ncch_settings *ncchset);
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int SetCommonHeaderBasicData(ncch_settings *ncchset, ncch_hdr *hdr);
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bool IsValidProductCode(char *ProductCode, bool FreeProductCode);
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// Code
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int SignCFA(ncch_hdr *hdr, keys_struct *keys)
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{
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if (RsaSignVerify(GetNcchHdrData(hdr), GetNcchHdrDataLen(hdr), GetNcchHdrSig(hdr), keys->rsa.cciCfa.pub, keys->rsa.cciCfa.pvt, RSA_2048_SHA256, CTR_RSA_SIGN) != 0)
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{
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printf("[NCCH WARNING] Failed to sign CFA header\n");
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memset(GetNcchHdrSig(hdr), 0xFF, 0x100);
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}
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return 0;
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}
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int CheckCFASignature(ncch_hdr *hdr, keys_struct *keys)
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{
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return RsaSignVerify(GetNcchHdrData(hdr),GetNcchHdrDataLen(hdr),GetNcchHdrSig(hdr),keys->rsa.cciCfa.pub,NULL,RSA_2048_SHA256,CTR_RSA_VERIFY);
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}
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int SignCXI(ncch_hdr *hdr, keys_struct *keys)
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{
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if (RsaSignVerify(GetNcchHdrData(hdr), GetNcchHdrDataLen(hdr), GetNcchHdrSig(hdr), keys->rsa.cxi.pub, keys->rsa.cxi.pvt, RSA_2048_SHA256, CTR_RSA_SIGN) != 0)
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{
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printf("[NCCH WARNING] Failed to sign CXI header\n");
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memset(GetNcchHdrSig(hdr), 0xFF, 0x100);
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}
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return 0;
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}
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int CheckCXISignature(ncch_hdr *hdr, u8 *pubk)
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{
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return RsaSignVerify(GetNcchHdrData(hdr), GetNcchHdrDataLen(hdr), GetNcchHdrSig(hdr), pubk, NULL, RSA_2048_SHA256, CTR_RSA_VERIFY);
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}
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// NCCH Build Functions
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int build_NCCH(user_settings *usrset)
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{
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int result;
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// Init Settings
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ncch_settings *ncchset = calloc(1,sizeof(ncch_settings));
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if(!ncchset) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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// Get Settings
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result = GetNcchSettings(ncchset,usrset);
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if(result) goto finish;
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// Import Data
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result = ImportNonCodeExeFsSections(ncchset);
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if(result) return result;
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result = ImportLogo(ncchset);
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if(result) return result;
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if(!ncchset->options.IsCfa){ // CXI Specific Sections
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// Build ExeFs Code Section\n");
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result = BuildExeFsCode(ncchset);
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if(result) goto finish;
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// Build ExHeader\n");
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result = BuildExHeader(ncchset);
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if(result) goto finish;
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}
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// Build ExeFs\n");
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result = BuildExeFs(ncchset);
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if(result) goto finish;
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// Prepare for RomFs\n");
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romfs_buildctx romfs;
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memset(&romfs,0,sizeof(romfs_buildctx));
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result = SetupRomFs(ncchset,&romfs);
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if(result) goto finish;
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// Setup NCCH including final memory allocation\n");
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result = SetupNcch(ncchset,&romfs);
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if(result) goto finish;
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// Build RomFs\n");
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result = BuildRomFs(&romfs);
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if(result) goto finish;
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// Finalise NCCH (Hashes/Signatures and crypto)\n");
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result = FinaliseNcch(ncchset);
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if(result) goto finish;
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finish:
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if(result)
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fprintf(stderr,"[NCCH ERROR] NCCH Build Process Failed\n");
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FreeNcchSettings(ncchset);
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return result;
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}
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void FreeNcchSettings(ncch_settings *set)
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{
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if(set->componentFilePtrs.elf) fclose(set->componentFilePtrs.elf);
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if(set->componentFilePtrs.banner) fclose(set->componentFilePtrs.banner);
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if(set->componentFilePtrs.icon) fclose(set->componentFilePtrs.icon);
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if(set->componentFilePtrs.logo) fclose(set->componentFilePtrs.logo);
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if(set->componentFilePtrs.code) fclose(set->componentFilePtrs.code);
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if(set->componentFilePtrs.exhdr) fclose(set->componentFilePtrs.exhdr);
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if(set->componentFilePtrs.romfs) fclose(set->componentFilePtrs.romfs);
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if(set->componentFilePtrs.plainregion) fclose(set->componentFilePtrs.plainregion);
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if(set->exefsSections.code.size) free(set->exefsSections.code.buffer);
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if(set->exefsSections.banner.size) free(set->exefsSections.banner.buffer);
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if(set->exefsSections.icon.size) free(set->exefsSections.icon.buffer);
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if(set->sections.exhdr.size) free(set->sections.exhdr.buffer);
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if(set->sections.logo.size) free(set->sections.logo.buffer);
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if(set->sections.plainRegion.size) free(set->sections.plainRegion.buffer);
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if(set->sections.exeFs.size) free(set->sections.exeFs.buffer);
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memset(set,0,sizeof(ncch_settings));
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free(set);
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}
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int GetNcchSettings(ncch_settings *ncchset, user_settings *usrset)
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{
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int result = 0;
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ncchset->out = &usrset->common.workingFile;
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ncchset->rsfSet = &usrset->common.rsfSet;
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ncchset->keys = &usrset->common.keys;
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result = GetBasicOptions(ncchset,usrset);
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if(result) return result;
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result = CreateInputFilePtrs(ncchset,usrset);
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if(result) return result;
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return 0;
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}
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int GetBasicOptions(ncch_settings *ncchset, user_settings *usrset)
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{
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int result = 0;
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/* Options */
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ncchset->options.blockSize = NCCH_BLOCK_SIZE;
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ncchset->options.verbose = usrset->common.verbose;
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ncchset->options.IncludeExeFsLogo = usrset->ncch.includeExefsLogo;
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ncchset->options.CompressCode = ncchset->rsfSet->Option.EnableCompress;
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ncchset->options.UseOnSD = ncchset->rsfSet->Option.UseOnSD;
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ncchset->options.Encrypt = ncchset->rsfSet->Option.EnableCrypt;
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ncchset->options.FreeProductCode = ncchset->rsfSet->Option.FreeProductCode;
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ncchset->options.IsCfa = (usrset->ncch.ncchType == CFA);
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ncchset->options.IsBuildingCodeSection = (usrset->ncch.elfPath != NULL);
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ncchset->options.UseRomFS = ((ncchset->rsfSet->RomFs.RootPath && strlen(ncchset->rsfSet->RomFs.RootPath) > 0) || usrset->ncch.romfsPath);
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ncchset->options.noCodePadding = usrset->ncch.noCodePadding;
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ncchset->options.useSecCrypto = usrset->ncch.useSecCrypto;
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ncchset->options.keyXID = usrset->ncch.keyXID;
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if(ncchset->options.IsCfa && !ncchset->options.UseRomFS){
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fprintf(stderr,"[NCCH ERROR] \"Rom/HostRoot\" must be set\n");
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return NCCH_BAD_RSF_SET;
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}
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return result;
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}
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int CreateInputFilePtrs(ncch_settings *ncchset, user_settings *usrset)
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{
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if(usrset->ncch.romfsPath){
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ncchset->componentFilePtrs.romfsSize = GetFileSize64(usrset->ncch.romfsPath);
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ncchset->componentFilePtrs.romfs = fopen(usrset->ncch.romfsPath,"rb");
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if(!ncchset->componentFilePtrs.romfs){
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fprintf(stderr,"[NCCH ERROR] Failed to open RomFs file '%s'\n",usrset->ncch.romfsPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.elfPath){
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ncchset->componentFilePtrs.elfSize = GetFileSize64(usrset->ncch.elfPath);
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ncchset->componentFilePtrs.elf = fopen(usrset->ncch.elfPath,"rb");
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if(!ncchset->componentFilePtrs.elf){
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fprintf(stderr,"[NCCH ERROR] Failed to open elf file '%s'\n",usrset->ncch.elfPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.bannerPath){
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ncchset->componentFilePtrs.bannerSize = GetFileSize64(usrset->ncch.bannerPath);
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ncchset->componentFilePtrs.banner = fopen(usrset->ncch.bannerPath,"rb");
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if(!ncchset->componentFilePtrs.banner){
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fprintf(stderr,"[NCCH ERROR] Failed to open banner file '%s'\n",usrset->ncch.bannerPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.iconPath){
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ncchset->componentFilePtrs.iconSize = GetFileSize64(usrset->ncch.iconPath);
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ncchset->componentFilePtrs.icon = fopen(usrset->ncch.iconPath,"rb");
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if(!ncchset->componentFilePtrs.icon){
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fprintf(stderr,"[NCCH ERROR] Failed to open icon file '%s'\n",usrset->ncch.iconPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.logoPath){
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ncchset->componentFilePtrs.logoSize = GetFileSize64(usrset->ncch.logoPath);
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ncchset->componentFilePtrs.logo = fopen(usrset->ncch.logoPath,"rb");
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if(!ncchset->componentFilePtrs.logo){
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fprintf(stderr,"[NCCH ERROR] Failed to open logo file '%s'\n",usrset->ncch.logoPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.codePath){
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ncchset->componentFilePtrs.codeSize = GetFileSize64(usrset->ncch.codePath);
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ncchset->componentFilePtrs.code = fopen(usrset->ncch.codePath,"rb");
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if(!ncchset->componentFilePtrs.code){
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fprintf(stderr,"[NCCH ERROR] Failed to open ExeFs Code file '%s'\n",usrset->ncch.codePath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.exheaderPath){
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ncchset->componentFilePtrs.exhdrSize = GetFileSize64(usrset->ncch.exheaderPath);
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ncchset->componentFilePtrs.exhdr = fopen(usrset->ncch.exheaderPath,"rb");
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if(!ncchset->componentFilePtrs.exhdr){
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fprintf(stderr,"[NCCH ERROR] Failed to open ExHeader file '%s'\n",usrset->ncch.exheaderPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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if(usrset->ncch.plainRegionPath){
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ncchset->componentFilePtrs.plainregionSize = GetFileSize64(usrset->ncch.plainRegionPath);
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ncchset->componentFilePtrs.plainregion = fopen(usrset->ncch.plainRegionPath,"rb");
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if(!ncchset->componentFilePtrs.plainregion){
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fprintf(stderr,"[NCCH ERROR] Failed to open PlainRegion file '%s'\n",usrset->ncch.plainRegionPath);
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return FAILED_TO_IMPORT_FILE;
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}
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}
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return 0;
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}
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int ImportNonCodeExeFsSections(ncch_settings *set)
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{
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if(set->componentFilePtrs.banner){
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set->exefsSections.banner.size = set->componentFilePtrs.bannerSize;
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set->exefsSections.banner.buffer = malloc(set->exefsSections.banner.size);
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if(!set->exefsSections.banner.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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ReadFile64(set->exefsSections.banner.buffer,set->exefsSections.banner.size,0,set->componentFilePtrs.banner);
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}
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if(set->componentFilePtrs.icon){
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set->exefsSections.icon.size = set->componentFilePtrs.iconSize;
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set->exefsSections.icon.buffer = malloc(set->exefsSections.icon.size);
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if(!set->exefsSections.icon.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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ReadFile64(set->exefsSections.icon.buffer,set->exefsSections.icon.size,0,set->componentFilePtrs.icon);
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}
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return 0;
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}
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int ImportLogo(ncch_settings *set)
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{
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if(set->componentFilePtrs.logo){
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set->sections.logo.size = align(set->componentFilePtrs.logoSize,set->options.blockSize);
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memset(set->sections.logo.buffer,0,set->sections.logo.size);
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ReadFile64(set->sections.logo.buffer,set->componentFilePtrs.logoSize,0,set->componentFilePtrs.logo);
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}
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else if(set->rsfSet->BasicInfo.Logo){
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if(strcasecmp(set->rsfSet->BasicInfo.Logo,"nintendo") == 0){
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer,Nintendo_LZ,0x2000);
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}
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else if(strcasecmp(set->rsfSet->BasicInfo.Logo,"licensed") == 0){
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer,Nintendo_LicensedBy_LZ,0x2000);
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}
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else if(strcasecmp(set->rsfSet->BasicInfo.Logo,"distributed") == 0){
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer,Nintendo_DistributedBy_LZ,0x2000);
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}
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else if(strcasecmp(set->rsfSet->BasicInfo.Logo,"ique") == 0){
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer,iQue_with_ISBN_LZ,0x2000);
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}
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else if(strcasecmp(set->rsfSet->BasicInfo.Logo,"iqueforsystem") == 0){
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if(!set->sections.logo.buffer) {
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fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer,iQue_without_ISBN_LZ,0x2000);
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}
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else if (strcasecmp(set->rsfSet->BasicInfo.Logo, "homebrew") == 0) {
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set->sections.logo.size = 0x2000;
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set->sections.logo.buffer = malloc(set->sections.logo.size);
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if (!set->sections.logo.buffer) {
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fprintf(stderr, "[NCCH ERROR] Not enough memory\n");
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return MEM_ERROR;
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}
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memcpy(set->sections.logo.buffer, Homebrew_LZ, 0x2000);
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}
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else if(strcasecmp(set->rsfSet->BasicInfo.Logo,"none") != 0){
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fprintf(stderr,"[NCCH ERROR] Invalid logo name\n");
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return NCCH_BAD_RSF_SET;
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}
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}
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return 0;
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}
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int SetupNcch(ncch_settings *set, romfs_buildctx *romfs)
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{
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u64 ncchSize = 0;
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u64 exhdrSize,acexSize,logoSize,plnRgnSize,exefsSize,romfsSize;
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u64 exhdrOffset,acexOffset = 0,logoOffset,plnRgnOffset,exefsOffset,romfsOffset;
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u32 exefsHashSize,romfsHashSize;
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ncchSize += sizeof(ncch_hdr); // Sig+Hdr
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// Sizes for NCCH hdr
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if(set->sections.exhdr.size){
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exhdrSize = set->sections.exhdr.size;
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exhdrOffset = ncchSize;
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ncchSize += exhdrSize;
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}
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else
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exhdrSize = 0;
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if(set->sections.acexDesc.size){
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acexSize = set->sections.acexDesc.size;
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acexOffset = ncchSize;
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ncchSize += acexSize;
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}
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else
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acexSize = 0;
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if(set->sections.logo.size && set->options.IncludeExeFsLogo == false){
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logoSize = set->sections.logo.size;
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logoOffset = align(ncchSize,set->options.blockSize);
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ncchSize = logoOffset + logoSize;
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}
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else
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logoSize = 0;
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if(set->sections.plainRegion.size){
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plnRgnSize = align(set->sections.plainRegion.size,set->options.blockSize);
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plnRgnOffset = align(ncchSize,set->options.blockSize);
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ncchSize = plnRgnOffset + plnRgnSize;
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}
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else
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plnRgnSize = 0;
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if(set->sections.exeFs.size){
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exefsHashSize = align(sizeof(exefs_hdr),set->options.blockSize);
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exefsSize = align(set->sections.exeFs.size,set->options.blockSize);
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exefsOffset = align(ncchSize,set->options.blockSize);
|
|
ncchSize = exefsOffset + exefsSize;
|
|
}
|
|
else
|
|
exefsSize = 0;
|
|
|
|
if(romfs->romfsSize){
|
|
romfsHashSize = align(romfs->romfsHeaderSize,set->options.blockSize);
|
|
romfsSize = align(romfs->romfsSize,set->options.blockSize);
|
|
//romfsOffset = align(ncchSize,set->options.blockSize); // Old makerom method, SDK 2.x and prior
|
|
romfsOffset = align(ncchSize,0x1000);
|
|
ncchSize = romfsOffset + romfsSize;
|
|
}
|
|
else
|
|
romfsSize = 0;
|
|
|
|
|
|
|
|
// Aligning Total NCCH Size
|
|
ncchSize = align(ncchSize,set->options.blockSize);
|
|
|
|
u8 *ncch = calloc(1,ncchSize);
|
|
if(!ncch){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
return MEM_ERROR;
|
|
}
|
|
|
|
// Setting up hdr\n");
|
|
ncch_hdr *hdr = (ncch_hdr*)ncch;
|
|
int ret = SetCommonHeaderBasicData(set,hdr);
|
|
if(ret != 0){
|
|
free(ncch);
|
|
return ret;
|
|
}
|
|
u32_to_u8(hdr->ncchSize,ncchSize/set->options.blockSize,LE);
|
|
|
|
|
|
// Copy already built sections to ncch
|
|
if(exhdrSize){
|
|
memcpy((u8*)(ncch+exhdrOffset),set->sections.exhdr.buffer,set->sections.exhdr.size);
|
|
free(set->sections.exhdr.buffer);
|
|
set->sections.exhdr.buffer = NULL;
|
|
u32_to_u8(hdr->exhdrSize,exhdrSize,LE);
|
|
}
|
|
if(acexSize){
|
|
memcpy((u8*)(ncch+acexOffset),set->sections.acexDesc.buffer,set->sections.acexDesc.size);
|
|
free(set->sections.acexDesc.buffer);
|
|
set->sections.acexDesc.buffer = NULL;
|
|
}
|
|
|
|
if(logoSize){
|
|
memcpy((u8*)(ncch+logoOffset),set->sections.logo.buffer,set->sections.logo.size);
|
|
free(set->sections.logo.buffer);
|
|
set->sections.logo.buffer = NULL;
|
|
u32_to_u8(hdr->logoOffset,logoOffset/set->options.blockSize,LE);
|
|
u32_to_u8(hdr->logoSize,logoSize/set->options.blockSize,LE);
|
|
}
|
|
|
|
if(plnRgnSize){
|
|
memcpy((u8*)(ncch+plnRgnOffset),set->sections.plainRegion.buffer,set->sections.plainRegion.size);
|
|
free(set->sections.plainRegion.buffer);
|
|
set->sections.plainRegion.buffer = NULL;
|
|
u32_to_u8(hdr->plainRegionOffset,plnRgnOffset/set->options.blockSize,LE);
|
|
u32_to_u8(hdr->plainRegionSize,plnRgnSize/set->options.blockSize,LE);
|
|
}
|
|
|
|
if(exefsSize){
|
|
memcpy((u8*)(ncch+exefsOffset),set->sections.exeFs.buffer,set->sections.exeFs.size);
|
|
free(set->sections.exeFs.buffer);
|
|
|
|
set->sections.exeFs.buffer = NULL;
|
|
|
|
u32_to_u8(hdr->exefsOffset,exefsOffset/set->options.blockSize,LE);
|
|
|
|
u32_to_u8(hdr->exefsSize,exefsSize/set->options.blockSize,LE);
|
|
|
|
u32_to_u8(hdr->exefsHashSize,exefsHashSize/set->options.blockSize,LE);
|
|
|
|
}
|
|
|
|
// Point Romfs CTX to output buffer, if exists\n");
|
|
if(romfsSize){
|
|
romfs->output = ncch + romfsOffset;
|
|
u32_to_u8(hdr->romfsOffset,romfsOffset/set->options.blockSize,LE);
|
|
u32_to_u8(hdr->romfsSize,romfsSize/set->options.blockSize,LE);
|
|
u32_to_u8(hdr->romfsHashSize,romfsHashSize/set->options.blockSize,LE);
|
|
}
|
|
|
|
set->out->buffer = ncch;
|
|
set->out->size = ncchSize;
|
|
|
|
GetNcchInfo(&set->cryptoDetails,hdr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int FinaliseNcch(ncch_settings *set)
|
|
{
|
|
u8 *ncch = set->out->buffer;
|
|
|
|
ncch_hdr *hdr = (ncch_hdr*)ncch;
|
|
u8 *exhdr = (u8*)(ncch + set->cryptoDetails.exhdrOffset);
|
|
u8 *acexDesc = (u8*)(ncch + set->cryptoDetails.acexOffset);
|
|
u8 *logo = (u8*)(ncch + set->cryptoDetails.logoOffset);
|
|
u8 *exefs = (u8*)(ncch + set->cryptoDetails.exefsOffset);
|
|
u8 *romfs = (u8*)(ncch + set->cryptoDetails.romfsOffset);
|
|
|
|
// Taking Hashes
|
|
if(set->cryptoDetails.exhdrSize)
|
|
ShaCalc(exhdr,set->cryptoDetails.exhdrSize,hdr->exhdrHash,CTR_SHA_256);
|
|
if(set->cryptoDetails.logoSize)
|
|
ShaCalc(logo,set->cryptoDetails.logoSize,hdr->logoHash,CTR_SHA_256);
|
|
if(set->cryptoDetails.exefsHashDataSize)
|
|
ShaCalc(exefs,set->cryptoDetails.exefsHashDataSize,hdr->exefsHash,CTR_SHA_256);
|
|
if(set->cryptoDetails.romfsHashDataSize)
|
|
ShaCalc(romfs,set->cryptoDetails.romfsHashDataSize,hdr->romfsHash,CTR_SHA_256);
|
|
|
|
// Signing NCCH
|
|
int sig_result = Good;
|
|
if(set->options.IsCfa)
|
|
sig_result = SignCFA(hdr,set->keys);
|
|
else
|
|
sig_result = SignCXI(hdr,set->keys);
|
|
if(sig_result != Good){
|
|
fprintf(stderr,"[NCCH ERROR] Failed to sign %s header\n",set->options.IsCfa ? "CFA" : "CXI");
|
|
return sig_result;
|
|
}
|
|
|
|
|
|
// Crypting NCCH\n");
|
|
if(IsNcchEncrypted(hdr)){
|
|
if(!SetNcchKeys(set->keys, hdr)){
|
|
fprintf(stderr,"[NCCH ERROR] Failed to load NCCH AES key\n");
|
|
return -1;
|
|
}
|
|
|
|
if(set->options.verbose){
|
|
printf("[NCCH] NCCH AES keys:\n");
|
|
memdump(stdout," > key0: ",set->keys->aes.ncchKey0,AES_128_KEY_SIZE);
|
|
memdump(stdout," > key1: ",set->keys->aes.ncchKey1,AES_128_KEY_SIZE);
|
|
}
|
|
|
|
// Crypting Exheader/AcexDesc
|
|
if(set->cryptoDetails.exhdrSize){
|
|
if (set->options.verbose)
|
|
printf("[NCCH] Encypting Exheader... ");
|
|
CryptNcchRegion(exhdr,set->cryptoDetails.exhdrSize,0x0,set->cryptoDetails.titleId,set->keys->aes.ncchKey0,ncch_exhdr);
|
|
CryptNcchRegion(acexDesc,set->cryptoDetails.acexSize,set->cryptoDetails.exhdrSize,set->cryptoDetails.titleId,set->keys->aes.ncchKey0,ncch_exhdr);
|
|
if (set->options.verbose)
|
|
printf("Done!\n");
|
|
}
|
|
|
|
// Crypting ExeFs Files
|
|
if(set->cryptoDetails.exefsSize){
|
|
if (set->options.verbose)
|
|
printf("[NCCH] Encrypting ExeFS... ");
|
|
|
|
exefs_hdr *exefsHdr = (exefs_hdr*)exefs;
|
|
for(int i = 0; i < MAX_EXEFS_SECTIONS; i++){
|
|
u8 *key = NULL;
|
|
if(strncmp(exefsHdr->fileHdr[i].name,"icon",8) == 0 || strncmp(exefsHdr->fileHdr[i].name,"banner",8) == 0)
|
|
key = set->keys->aes.ncchKey0;
|
|
else
|
|
key = set->keys->aes.ncchKey1;
|
|
|
|
u32 offset = u8_to_u32(exefsHdr->fileHdr[i].offset,LE) + sizeof(exefs_hdr);
|
|
u32 size = u8_to_u32(exefsHdr->fileHdr[i].size,LE);
|
|
|
|
if(size)
|
|
CryptNcchRegion((exefs+offset),align(size,set->options.blockSize),offset,set->cryptoDetails.titleId,key,ncch_exefs);
|
|
|
|
}
|
|
// Crypting ExeFs Header
|
|
CryptNcchRegion(exefs,sizeof(exefs_hdr),0x0,set->cryptoDetails.titleId,set->keys->aes.ncchKey0,ncch_exefs);
|
|
|
|
if (set->options.verbose)
|
|
printf("Done!\n");
|
|
}
|
|
|
|
// Crypting RomFs
|
|
if (set->cryptoDetails.romfsSize) {
|
|
if (set->options.verbose)
|
|
printf("[NCCH] Encrypting RomFS... ");
|
|
CryptNcchRegion(romfs, set->cryptoDetails.romfsSize, 0x0, set->cryptoDetails.titleId, set->keys->aes.ncchKey1, ncch_romfs);
|
|
if (set->options.verbose)
|
|
printf("Done!\n");
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int SetCommonHeaderBasicData(ncch_settings *set, ncch_hdr *hdr)
|
|
{
|
|
/* NCCH Magic */
|
|
memcpy(hdr->magic,"NCCH",4);
|
|
|
|
/* NCCH Format Version */
|
|
if(!set->options.IsCfa)
|
|
u16_to_u8(hdr->formatVersion,0x2,LE);
|
|
|
|
|
|
/* Setting ProgramId/TitleId */
|
|
u64 programId = 0;
|
|
int result = GetProgramID(&programId,set->rsfSet,false);
|
|
if(result) return result;
|
|
|
|
u64_to_u8(hdr->programId,programId,LE);
|
|
u64_to_u8(hdr->titleId,programId,LE);
|
|
|
|
/* Get Product Code and Maker Code */
|
|
if(set->rsfSet->BasicInfo.ProductCode){
|
|
if(!IsValidProductCode((char*)set->rsfSet->BasicInfo.ProductCode,set->options.FreeProductCode)){
|
|
fprintf(stderr,"[NCCH ERROR] Invalid Product Code\n");
|
|
return NCCH_BAD_RSF_SET;
|
|
}
|
|
strncpy((char*)hdr->productCode,set->rsfSet->BasicInfo.ProductCode, 16);
|
|
}
|
|
else
|
|
strncpy((char*)hdr->productCode, DEFAULT_PRODUCT_CODE, 16);
|
|
|
|
if(set->rsfSet->BasicInfo.CompanyCode){
|
|
if(strlen((char*)set->rsfSet->BasicInfo.CompanyCode) != 2){
|
|
fprintf(stderr,"[NCCH ERROR] CompanyCode length must be 2\n");
|
|
return NCCH_BAD_RSF_SET;
|
|
}
|
|
strncpy((char*)hdr->makerCode, set->rsfSet->BasicInfo.CompanyCode, 2);
|
|
}
|
|
else
|
|
strncpy((char*)hdr->makerCode, DEFAULT_MAKER_CODE, 2);
|
|
|
|
// Setting Encryption Settings
|
|
if(!set->options.Encrypt)
|
|
hdr->flags[ncchflag_OTHER_FLAG] = (otherflag_NoCrypto|otherflag_FixedCryptoKey);
|
|
else if(set->options.useSecCrypto){
|
|
hdr->flags[ncchflag_OTHER_FLAG] = otherflag_Clear;
|
|
hdr->flags[ncchflag_CONTENT_KEYX] = set->options.keyXID;
|
|
}
|
|
else
|
|
hdr->flags[ncchflag_OTHER_FLAG] = otherflag_FixedCryptoKey;
|
|
|
|
if(!SetNcchKeys(set->keys,hdr) && set->options.Encrypt){
|
|
hdr->flags[ncchflag_OTHER_FLAG] = (otherflag_NoCrypto|otherflag_FixedCryptoKey);
|
|
hdr->flags[ncchflag_CONTENT_KEYX] = 0;
|
|
set->options.Encrypt = false;
|
|
fprintf(stderr,"[NCCH WARNING] NCCH AES Key could not be loaded, NCCH will not be encrypted\n");
|
|
}
|
|
|
|
/* Set ContentUnitSize */
|
|
hdr->flags[ncchflag_CONTENT_BLOCK_SIZE] = GetCtrBlockSizeFlag(set->options.blockSize);
|
|
|
|
/* Setting ContentPlatform */
|
|
if(set->rsfSet->TitleInfo.Platform){
|
|
if(strcasecmp(set->rsfSet->TitleInfo.Platform, "ctr") == 0)
|
|
hdr->flags[ncchflag_CONTENT_PLATFORM] = platform_CTR;
|
|
else if (strcasecmp(set->rsfSet->TitleInfo.Platform, "snake") == 0)
|
|
hdr->flags[ncchflag_CONTENT_PLATFORM] = platform_SNAKE;
|
|
else{
|
|
fprintf(stderr, "[NCCH ERROR] Invalid Platform '%s'\n", set->rsfSet->TitleInfo.Platform);
|
|
return NCCH_BAD_RSF_SET;
|
|
}
|
|
}
|
|
else
|
|
hdr->flags[ncchflag_CONTENT_PLATFORM] = platform_CTR;
|
|
|
|
/* Setting OtherFlag */
|
|
if(!set->options.UseRomFS)
|
|
hdr->flags[ncchflag_OTHER_FLAG] |= otherflag_NoMountRomFs;
|
|
|
|
|
|
/* Setting FormType */
|
|
hdr->flags[ncchflag_CONTENT_TYPE] = form_Unassigned;
|
|
if(set->options.IsCfa)
|
|
hdr->flags[ncchflag_CONTENT_TYPE] = form_SimpleContent;
|
|
else if (set->options.UseRomFS)
|
|
hdr->flags[ncchflag_CONTENT_TYPE] = form_Executable;
|
|
else
|
|
hdr->flags[ncchflag_CONTENT_TYPE] = form_ExecutableWithoutRomfs;
|
|
|
|
/* Setting ContentType */
|
|
if(set->rsfSet->BasicInfo.ContentType){
|
|
if(strcmp(set->rsfSet->BasicInfo.ContentType,"Application") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_Application << 2);
|
|
else if(strcmp(set->rsfSet->BasicInfo.ContentType,"SystemUpdate") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_SystemUpdate << 2);
|
|
else if(strcmp(set->rsfSet->BasicInfo.ContentType,"Manual") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_Manual << 2);
|
|
else if(strcmp(set->rsfSet->BasicInfo.ContentType,"Child") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_Child << 2);
|
|
else if(strcmp(set->rsfSet->BasicInfo.ContentType,"Trial") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_Trial << 2);
|
|
else if (strcmp(set->rsfSet->BasicInfo.ContentType, "ExtendedSystemUpdate") == 0) hdr->flags[ncchflag_CONTENT_TYPE] |= (content_ExtendedSystemUpdate << 2);
|
|
else{
|
|
fprintf(stderr,"[NCCH ERROR] Invalid ContentType '%s'\n",set->rsfSet->BasicInfo.ContentType);
|
|
return NCCH_BAD_RSF_SET;
|
|
}
|
|
}
|
|
else
|
|
hdr->flags[ncchflag_CONTENT_TYPE] |= (content_Application << 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool IsValidProductCode(char *ProductCode, bool FreeProductCode)
|
|
{
|
|
if(strlen(ProductCode) > 16)
|
|
return false;
|
|
|
|
if(FreeProductCode)
|
|
return true;
|
|
|
|
if(strlen(ProductCode) < 10)
|
|
return false;
|
|
|
|
if(strncmp(ProductCode,"CTR",3) != 0 && strncmp(ProductCode, "KTR", 3) != 0)
|
|
return false;
|
|
|
|
for(int i = 3; i < 10; i++){
|
|
if(i == 3 || i == 5){
|
|
if(ProductCode[i] != '-')
|
|
return false;
|
|
}
|
|
else{
|
|
if(!isdigit(ProductCode[i]) && !isupper(ProductCode[i]))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// NCCH Read Functions
|
|
|
|
int VerifyNcch(u8 *ncch, keys_struct *keys, bool CheckHash, bool SuppressOutput)
|
|
{
|
|
// Setup
|
|
ncch_hdr* hdr = (ncch_hdr*)ncch;
|
|
|
|
ncch_info *ncchInfo = calloc(1,sizeof(ncch_info));
|
|
if(!ncchInfo){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
return MEM_ERROR;
|
|
}
|
|
GetNcchInfo(ncchInfo,hdr);
|
|
|
|
if(!SetNcchKeys(keys, hdr)){
|
|
fprintf(stderr,"[NCCH ERROR] Failed to load ncch aes key\n");
|
|
return UNABLE_TO_LOAD_NCCH_KEY;
|
|
}
|
|
|
|
if(IsCfa(hdr)){
|
|
if(CheckCFASignature(hdr,keys) != Good){
|
|
if(!SuppressOutput)
|
|
fprintf(keys->ignore_sign ? stdout :stderr,"[NCCH %s] CFA Sigcheck Failed\n", keys->ignore_sign ? "WARNING" : "ERROR");
|
|
if (!keys->ignore_sign)
|
|
{
|
|
free(ncchInfo);
|
|
return NCCH_HDR_SIG_BAD;
|
|
}
|
|
}
|
|
if(!ncchInfo->romfsSize){
|
|
if(!SuppressOutput)
|
|
fprintf(stderr,"[NCCH ERROR] CFA is corrupt\n");
|
|
free(ncchInfo);
|
|
return NO_ROMFS_IN_CFA;
|
|
}
|
|
}
|
|
else{ // IsCxi
|
|
// Checking for necessary sections
|
|
if(!ncchInfo->exhdrSize){
|
|
if(!SuppressOutput)
|
|
fprintf(stderr,"[NCCH ERROR] CXI is corrupt\n");
|
|
free(ncchInfo);
|
|
return NO_EXHEADER_IN_CXI;
|
|
}
|
|
if(!ncchInfo->exefsSize){
|
|
if(!SuppressOutput)
|
|
fprintf(stderr,"[NCCH ERROR] CXI is corrupt\n");
|
|
free(ncchInfo);
|
|
return NO_EXEFS_IN_CXI;
|
|
}
|
|
// Get ExHeader/AcexDesc
|
|
extended_hdr *exHdr = malloc(ncchInfo->exhdrSize);
|
|
if(!exHdr){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
free(ncchInfo);
|
|
return MEM_ERROR;
|
|
}
|
|
memcpy(exHdr,ncch+ncchInfo->exhdrOffset,ncchInfo->exhdrSize);
|
|
if(IsNcchEncrypted(hdr))
|
|
CryptNcchRegion((u8*)exHdr,ncchInfo->exhdrSize,0,ncchInfo->titleId,keys->aes.ncchKey0,ncch_exhdr);
|
|
|
|
// Checking Exheader Hash to see if decryption was sucessful
|
|
if(!VerifySha256(exHdr, ncchInfo->exhdrSize, hdr->exhdrHash)){
|
|
//memdump(stdout,"Expected Hash: ",hdr->extended_header_sha_256_hash,0x20);
|
|
//memdump(stdout,"Actual Hash: ",Hash,0x20);
|
|
//memdump(stdout,"Exheader: ",(u8*)exHdr,0x400);
|
|
if(!SuppressOutput) {
|
|
fprintf(stderr,"[NCCH ERROR] ExHeader Hashcheck Failed\n");
|
|
fprintf(stderr,"[NCCH ERROR] CXI is corrupt\n");
|
|
}
|
|
free(ncchInfo);
|
|
free(exHdr);
|
|
return EXHDR_CORRUPT;
|
|
}
|
|
free(exHdr);
|
|
|
|
// Checking RSA Sigs
|
|
access_descriptor *acexDesc = malloc(ncchInfo->acexSize);
|
|
if(!acexDesc){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
free(ncchInfo);
|
|
free(exHdr);
|
|
return MEM_ERROR;
|
|
}
|
|
memcpy(acexDesc,ncch+ncchInfo->acexOffset,ncchInfo->acexSize);
|
|
if(IsNcchEncrypted(hdr))
|
|
CryptNcchRegion((u8*)acexDesc,ncchInfo->acexSize,ncchInfo->exhdrSize,ncchInfo->titleId,keys->aes.ncchKey0,ncch_exhdr);
|
|
|
|
|
|
if(CheckAccessDescSignature(acexDesc,keys) != Good){
|
|
if (!SuppressOutput)
|
|
fprintf(keys->ignore_sign ? stdout : stderr, "[NCCH %s] AccessDesc Sigcheck Failed\n", keys->ignore_sign ? "WARNING" : "ERROR");
|
|
if (!keys->ignore_sign)
|
|
{
|
|
free(ncchInfo);
|
|
free(acexDesc);
|
|
return ACCESSDESC_SIG_BAD;
|
|
}
|
|
}
|
|
|
|
if(CheckCXISignature(hdr,GetAcexNcchPubKey(acexDesc)) != Good){
|
|
if (!SuppressOutput)
|
|
fprintf(keys->ignore_sign ? stdout : stderr,"[NCCH %s] CXI Header Sigcheck Failed\n", keys->ignore_sign ? "WARNING" : "ERROR");
|
|
if (!keys->ignore_sign)
|
|
{
|
|
free(ncchInfo);
|
|
free(acexDesc);
|
|
return NCCH_HDR_SIG_BAD;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if(!CheckHash)
|
|
return 0;
|
|
|
|
/* Checking ExeFs Hash, if present */
|
|
if(ncchInfo->exefsSize)
|
|
{
|
|
u8 *exefs = malloc(ncchInfo->exefsHashDataSize);
|
|
if(!exefs){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
free(ncchInfo);
|
|
return MEM_ERROR;
|
|
}
|
|
memcpy(exefs,ncch+ncchInfo->exefsOffset,ncchInfo->exefsHashDataSize);
|
|
if(IsNcchEncrypted(hdr))
|
|
CryptNcchRegion(exefs,ncchInfo->exefsHashDataSize,0,ncchInfo->titleId,keys->aes.ncchKey0,ncch_exefs);
|
|
if(!VerifySha256(exefs, ncchInfo->exefsHashDataSize, hdr->exefsHash)){
|
|
if(!SuppressOutput) fprintf(stderr,"[NCCH ERROR] ExeFs Hashcheck Failed\n");
|
|
free(ncchInfo);
|
|
free(exefs);
|
|
return EXEFS_CORRUPT;
|
|
}
|
|
free(exefs);
|
|
}
|
|
|
|
/* Checking RomFs hash, if present */
|
|
if(ncchInfo->romfsSize){
|
|
u8 *romfs = malloc(ncchInfo->romfsHashDataSize);
|
|
if(!romfs){
|
|
fprintf(stderr,"[NCCH ERROR] Not enough memory\n");
|
|
free(ncchInfo);
|
|
return MEM_ERROR;
|
|
}
|
|
memcpy(romfs,ncch+ncchInfo->romfsOffset,ncchInfo->romfsHashDataSize);
|
|
if(IsNcchEncrypted(hdr))
|
|
CryptNcchRegion(romfs,ncchInfo->romfsHashDataSize,0,ncchInfo->titleId,keys->aes.ncchKey1,ncch_romfs);
|
|
if(!VerifySha256(romfs,ncchInfo->romfsHashDataSize,hdr->romfsHash)){
|
|
if(!SuppressOutput) fprintf(stderr,"[NCCH ERROR] RomFs Hashcheck Failed\n");
|
|
free(ncchInfo);
|
|
free(romfs);
|
|
return ROMFS_CORRUPT;
|
|
}
|
|
free(romfs);
|
|
}
|
|
|
|
/* Checking the Logo Hash, if present */
|
|
if(ncchInfo->logoSize){
|
|
u8 *logo = (ncch+ncchInfo->logoOffset);
|
|
if(!VerifySha256(logo,ncchInfo->logoSize,hdr->logoHash)){
|
|
if(!SuppressOutput) fprintf(stderr,"[NCCH ERROR] Logo Hashcheck Failed\n");
|
|
free(ncchInfo);
|
|
return LOGO_CORRUPT;
|
|
}
|
|
}
|
|
|
|
|
|
free(ncchInfo);
|
|
return 0;
|
|
}
|
|
|
|
int ModifyNcchIds(u8 *ncch, u8 *titleId, u8 *programId, keys_struct *keys)
|
|
{
|
|
if(!IsNcch(NULL,ncch))
|
|
return -1;
|
|
|
|
ncch_hdr *hdr = (ncch_hdr*)ncch;
|
|
|
|
bool titleIdMatches = titleId == NULL? true : memcmp(titleId,hdr->titleId,8) == 0;
|
|
bool programIdMatches = programId == NULL? true : memcmp(programId,hdr->programId,8) == 0;
|
|
|
|
if(titleIdMatches && programIdMatches)
|
|
return 0;// if no modification is required don't do anything
|
|
|
|
if(/*keys->rsa.requiresPresignedDesc && */!IsCfa(hdr)){
|
|
fprintf(stderr,"[NCCH ERROR] CXI's ID cannot be modified without the ability to resign the AccessDesc\n"); // Not yet yet, requires AccessDesc Privk, may implement anyway later
|
|
return -1;
|
|
}
|
|
|
|
ncch_info ncchInfo;
|
|
u8 *romfs = NULL;
|
|
|
|
//Decrypting if necessary
|
|
if(IsNcchEncrypted(hdr)){
|
|
GetNcchInfo(&ncchInfo,hdr);
|
|
romfs = (ncch+ncchInfo.romfsOffset);
|
|
if(!SetNcchKeys(keys, hdr)){
|
|
fprintf(stderr,"[NCCH ERROR] Failed to load ncch aes key\n");
|
|
return -1;
|
|
}
|
|
CryptNcchRegion(romfs,ncchInfo.romfsSize,0,ncchInfo.titleId,keys->aes.ncchKey1,ncch_romfs);
|
|
}
|
|
|
|
// Editing data and resigning
|
|
if(titleId)
|
|
memcpy(hdr->titleId,titleId,8);
|
|
if(programId)
|
|
memcpy(hdr->programId,programId,8);
|
|
SignCFA(hdr,keys);
|
|
|
|
// Re-encrypting if necessary
|
|
if(IsNcchEncrypted(hdr)){
|
|
GetNcchInfo(&ncchInfo,hdr);
|
|
romfs = (ncch+ncchInfo.romfsOffset);
|
|
if(!SetNcchKeys(keys, hdr)){
|
|
fprintf(stderr,"[NCCH ERROR] Failed to load ncch aes key\n");
|
|
return -1;
|
|
}
|
|
CryptNcchRegion(romfs,ncchInfo.romfsSize,0,ncchInfo.titleId,keys->aes.ncchKey1,ncch_romfs);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void ReadNcchHdr(ncch_hdr *hdr, FILE *fp)
|
|
{
|
|
if(!fp || !hdr)
|
|
return;
|
|
|
|
ReadFile64(hdr,sizeof(ncch_hdr),0,fp);
|
|
|
|
return;
|
|
}
|
|
|
|
u8* GetNcchHdrSig(ncch_hdr *hdr)
|
|
{
|
|
return (u8*)hdr->signature;
|
|
}
|
|
|
|
u8* GetNcchHdrData(ncch_hdr *hdr)
|
|
{
|
|
return (u8*)hdr->magic;
|
|
}
|
|
|
|
u32 GetNcchHdrSigLen(ncch_hdr *hdr)
|
|
{
|
|
return 0x100;
|
|
}
|
|
|
|
u32 GetNcchHdrDataLen(ncch_hdr *hdr)
|
|
{
|
|
return 0x100;
|
|
}
|
|
|
|
bool IsNcch(FILE *fp, u8 *buf)
|
|
{
|
|
if(!fp && !buf)
|
|
return false;
|
|
|
|
ncch_hdr *hdr;
|
|
bool result;
|
|
|
|
if(fp) {
|
|
hdr = malloc(sizeof(ncch_hdr));
|
|
ReadNcchHdr(hdr,fp);
|
|
result = (memcmp(hdr->magic,"NCCH",4) == 0);
|
|
free(hdr);
|
|
}
|
|
else {
|
|
hdr = (ncch_hdr*)buf;
|
|
result = (memcmp(hdr->magic,"NCCH",4) == 0);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool IsCfa(ncch_hdr* hdr)
|
|
{
|
|
return (hdr->flags[ncchflag_CONTENT_TYPE] & 3) == form_SimpleContent;
|
|
}
|
|
|
|
bool IsUpdateCfa(ncch_hdr* hdr)
|
|
{
|
|
return (hdr->flags[ncchflag_CONTENT_TYPE] >> 2) == content_SystemUpdate || (hdr->flags[ncchflag_CONTENT_TYPE] >> 2) == content_ExtendedSystemUpdate;
|
|
}
|
|
|
|
u32 GetNcchBlockSize(ncch_hdr* hdr)
|
|
{
|
|
/*
|
|
u16 formatVersion = u8_to_u16(hdr->formatVersion,LE);
|
|
if (formatVersion == 1)
|
|
return 1;
|
|
*/
|
|
return GetCtrBlockSize(hdr->flags[ncchflag_CONTENT_BLOCK_SIZE]); //formatVersion == 2 || formatVersion == 0
|
|
}
|
|
|
|
u64 GetNcchSize(ncch_hdr* hdr)
|
|
{
|
|
return (u64)u8_to_u32(hdr->ncchSize,LE) * (u64)GetNcchBlockSize(hdr);
|
|
}
|
|
|
|
bool IsNcchEncrypted(ncch_hdr *hdr)
|
|
{
|
|
return (hdr->flags[ncchflag_OTHER_FLAG] & otherflag_NoCrypto) != otherflag_NoCrypto;
|
|
}
|
|
|
|
bool SetNcchKeys(keys_struct *keys, ncch_hdr *hdr)
|
|
{
|
|
if (!IsNcchEncrypted(hdr))
|
|
return true;
|
|
|
|
if ((hdr->flags[ncchflag_OTHER_FLAG] & otherflag_FixedCryptoKey) == otherflag_FixedCryptoKey) {
|
|
if ((hdr->programId[4] & 0x10) == 0x10) {
|
|
if (!keys->aes.systemFixedKey)
|
|
return false;
|
|
memcpy(keys->aes.ncchKey0, keys->aes.systemFixedKey, AES_128_KEY_SIZE);
|
|
memcpy(keys->aes.ncchKey1, keys->aes.systemFixedKey, AES_128_KEY_SIZE);
|
|
return true;
|
|
}
|
|
else {
|
|
if (!keys->aes.normalKey)
|
|
return false;
|
|
memcpy(keys->aes.ncchKey0, keys->aes.normalKey, AES_128_KEY_SIZE);
|
|
memcpy(keys->aes.ncchKey1, keys->aes.normalKey, AES_128_KEY_SIZE);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
u8 ncch_keyx_index = 0;
|
|
switch (hdr->flags[ncchflag_CONTENT_KEYX])
|
|
{
|
|
case (keyx_7_0):
|
|
ncch_keyx_index = 1;
|
|
break;
|
|
case (keyx_9_3):
|
|
ncch_keyx_index = 2;
|
|
break;
|
|
case (keyx_9_6):
|
|
ncch_keyx_index = 3;
|
|
break;
|
|
default:
|
|
ncch_keyx_index = 0;
|
|
}
|
|
|
|
if(keys->aes.ncchKeyX[0])
|
|
ctr_aes_keygen(keys->aes.ncchKeyX[0],hdr->signature,keys->aes.ncchKey0);
|
|
else
|
|
return false;
|
|
|
|
if(keys->aes.ncchKeyX[ncch_keyx_index])
|
|
ctr_aes_keygen(keys->aes.ncchKeyX[ncch_keyx_index], hdr->signature, keys->aes.ncchKey0);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
int GetNcchInfo(ncch_info *info, ncch_hdr *hdr)
|
|
{
|
|
clrmem(info, sizeof(ncch_info));
|
|
|
|
info->titleId = u8_to_u64(hdr->titleId,LE);
|
|
info->programId = u8_to_u64(hdr->programId,LE);
|
|
|
|
u64 block_size = GetNcchBlockSize(hdr);
|
|
|
|
info->formatVersion = u8_to_u16(hdr->formatVersion,LE);
|
|
if(!IsCfa(hdr)){
|
|
info->exhdrOffset = sizeof(ncch_hdr);
|
|
info->exhdrSize = u8_to_u32(hdr->exhdrSize,LE);
|
|
info->acexOffset = (info->exhdrOffset + info->exhdrSize);
|
|
info->acexSize = sizeof(access_descriptor);
|
|
info->plainRegionOffset = ((u64)u8_to_u32(hdr->plainRegionOffset,LE))*block_size;
|
|
info->plainRegionSize = ((u64)u8_to_u32(hdr->plainRegionSize,LE))*block_size;
|
|
}
|
|
|
|
info->logoOffset = ((u64)u8_to_u32(hdr->logoOffset,LE))*block_size;
|
|
info->logoSize = ((u64)u8_to_u32(hdr->logoSize,LE))*block_size;
|
|
info->exefsOffset = ((u64)u8_to_u32(hdr->exefsOffset,LE))*block_size;
|
|
info->exefsSize = ((u64)u8_to_u32(hdr->exefsSize,LE))*block_size;
|
|
info->exefsHashDataSize = ((u64)u8_to_u32(hdr->exefsHashSize,LE))*block_size;
|
|
info->romfsOffset = ((u64)u8_to_u32(hdr->romfsOffset,LE))*block_size;
|
|
info->romfsSize = ((u64)u8_to_u32(hdr->romfsSize,LE))*block_size;
|
|
info->romfsHashDataSize = ((u64)u8_to_u32(hdr->romfsHashSize,LE))*block_size;
|
|
return 0;
|
|
}
|
|
|
|
void GetNcchAesCounter(u8 ctr[16], u64 titleId, u8 type)
|
|
{
|
|
clrmem(ctr,16);
|
|
u64_to_u8(ctr,titleId,BE);
|
|
ctr[8] = type;
|
|
}
|
|
|
|
void CryptNcchRegion(u8 *buffer, u64 size, u64 src_pos, u64 titleId, u8 key[16], u8 type)
|
|
{
|
|
u8 ctr[0x10];
|
|
GetNcchAesCounter(ctr,titleId,type);
|
|
AesCtrCrypt(key,ctr,buffer,buffer,size,src_pos);
|
|
return;
|
|
} |