CTR IV implemented for NCA3+key+crypto-type=3
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baf70df47c
commit
d3949b90bd
9 changed files with 167 additions and 91 deletions
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@ -178,10 +178,14 @@ public class NCAController implements TabController {
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NCASectionHeaderFourthController.populateTab(ncaProvider.getSectionBlock3());
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// Section content blocks
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// TODO: FIX: This code executes getNCAContentPFS0() method twice
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NCASectionContentFirstController.populateFields(ncaProvider.getNCAContentPFS0(0).getPfs0(), selectedFile, ncaProvider.getNCAContentPFS0(0).getSHA256hashes());
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NCASectionContentSecondController.populateFields(ncaProvider.getNCAContentPFS0(1).getPfs0(), selectedFile, ncaProvider.getNCAContentPFS0(1).getSHA256hashes());
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NCASectionContentThirdController.populateFields(ncaProvider.getNCAContentPFS0(2).getPfs0(), selectedFile, ncaProvider.getNCAContentPFS0(2).getSHA256hashes());
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NCASectionContentFourthController.populateFields(ncaProvider.getNCAContentPFS0(3).getPfs0(), selectedFile, ncaProvider.getNCAContentPFS0(3).getSHA256hashes());
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NCAContentPFS0 ncaContentPFS0 = ncaProvider.getNCAContentPFS0(0);
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NCASectionContentFirstController.populateFields(ncaContentPFS0.getPfs0(), selectedFile, ncaContentPFS0.getSHA256hashes());
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ncaContentPFS0 = ncaProvider.getNCAContentPFS0(1);
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NCASectionContentSecondController.populateFields(ncaContentPFS0.getPfs0(), selectedFile, ncaContentPFS0.getSHA256hashes());
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ncaContentPFS0 = ncaProvider.getNCAContentPFS0(2);
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NCASectionContentThirdController.populateFields(ncaContentPFS0.getPfs0(), selectedFile, ncaContentPFS0.getSHA256hashes());
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ncaContentPFS0 = ncaProvider.getNCAContentPFS0(3);
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NCASectionContentFourthController.populateFields(ncaContentPFS0.getPfs0(), selectedFile, ncaContentPFS0.getSHA256hashes());
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}
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}
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}
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@ -19,4 +19,12 @@ public class LoperConverter {
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sb.append(String.format("%02x", b));
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return sb.toString();
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}
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public static byte[] flip(byte[] bytes){
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int size = bytes.length;
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byte[] ret = new byte[size];
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for (int i = 0; i < size; i++){
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ret[size-i-1] = bytes[i];
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}
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return ret;
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}
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}
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@ -1,22 +1,20 @@
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package konogonka.Tools.NCA;
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import konogonka.LoperConverter;
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import konogonka.RainbowHexDump;
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import konogonka.Tools.NCA.NCASectionTableBlock.NCASectionBlock;
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import konogonka.Tools.PFS0.PFS0Provider;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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import konogonka.ctraes.AesCtr;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import java.io.File;
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import java.io.RandomAccessFile;
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import java.security.Security;
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import java.util.LinkedList;
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public class NCAContentPFS0 {
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private LinkedList<byte[]> SHA256hashes;
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private PFS0Provider pfs0;
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// TODO: if decryptedKey is empty, thorow exception ??
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public NCAContentPFS0(File file, long offsetPosition, NCASectionBlock ncaSectionBlock, NCAHeaderTableEntry ncaHeaderTableEntry, byte[] decryptedKey){
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SHA256hashes = new LinkedList<>();
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try {
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@ -47,14 +45,80 @@ public class NCAContentPFS0 {
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raf.close();
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}
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// If encrypted (regular)
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else if (ncaSectionBlock.getCryptoType() == 0x3){
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long thisMediaLocation = offsetPosition + (ncaHeaderTableEntry.getMediaStartOffset() * 0x200); // todo: use this location for CTR
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long hashTableLocation = thisMediaLocation + ncaSectionBlock.getSuperBlockPFS0().getHashTableOffset();
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long pfs0Location = thisMediaLocation + ncaSectionBlock.getSuperBlockPFS0().getPfs0offset();
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// If encrypted (regular) todo: check keys provided
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else if (ncaSectionBlock.getCryptoType() == 0x3){ // d0c1...
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//--------------------------------------------------------------------------------------------------
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System.out.println("Media start location: " + ncaHeaderTableEntry.getMediaStartOffset());
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System.out.println("Media end location: " + ncaHeaderTableEntry.getMediaEndOffset());
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System.out.println("Media size = sha h.tbl.size: " + (ncaHeaderTableEntry.getMediaEndOffset()-ncaHeaderTableEntry.getMediaStartOffset()));
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System.out.println("Media act. location: " + (offsetPosition + (ncaHeaderTableEntry.getMediaStartOffset() * 0x200)));
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System.out.println("SHA256 hash tbl size: " + ncaSectionBlock.getSuperBlockPFS0().getHashTableSize());
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System.out.println("SHA256 records: " + (ncaSectionBlock.getSuperBlockPFS0().getHashTableSize() / 0x20));
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System.out.println("KEY: " + LoperConverter.byteArrToHexString(decryptedKey));
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System.out.println();
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//--------------------------------------------------------------------------------------------------
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long thisMediaLocation = offsetPosition + (ncaHeaderTableEntry.getMediaStartOffset() * 0x200); // According to real file
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long hashTableLocation = thisMediaLocation + ncaSectionBlock.getSuperBlockPFS0().getHashTableOffset(); // According to real file
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raf.seek(hashTableLocation);
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raf.seek(thisMediaLocation);
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try {
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// IV for CTR == 32 bytes
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byte[] IVarray = new byte[0x10];
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// Populate first 8 bytes taken from Header's section Block CTR
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System.arraycopy(LoperConverter.flip(ncaSectionBlock.getSectionCTR()), 0, IVarray,0, 8);
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// Populate last 8 bytes calculated. Thanks hactool project!
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// TODO: here is too much magic. It MUST be clarified and simplified
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long mediaStrtOffReal = ncaHeaderTableEntry.getMediaStartOffset() * 0x200; // NOTE: long actually should be unsigned.. for calculation it's not critical, but for representation it is
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mediaStrtOffReal >>= 4;
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for (int i = 0; i < 0x8; i++){
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IVarray[0x10-i-1] = (byte)(mediaStrtOffReal & 0xff); // Note: issues could be here
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mediaStrtOffReal >>= 8;
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}
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AesCtr aesCtr = new AesCtr(decryptedKey, IVarray);
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byte[] encryptedBlock;
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byte[] dectyptedBlock;
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long mediaBlockSize = ncaHeaderTableEntry.getMediaEndOffset()-ncaHeaderTableEntry.getMediaStartOffset();
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for (int i = 0; i < mediaBlockSize; i++){
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encryptedBlock = new byte[0x200];
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if (raf.read(encryptedBlock) != -1){
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dectyptedBlock = aesCtr.decrypt(encryptedBlock);
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}
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}
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/*
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System.arraycopy(dectyptedBlock, 0, decryptedHeader, i * 0x200, 0x200);
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*/
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//RainbowHexDump.hexDumpUTF8(dectyptedBlock);
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/*
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// Calculate hashes count
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long sha256recordsNumber = ncaSectionBlock.getSuperBlockPFS0().getHashTableSize() / 0x20;
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long currentHashStart = ncaSectionBlock.getSuperBlockPFS0().getHashTableOffset();
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for (int i = 0; i < sha256recordsNumber; i++){
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currentHashStart += i * 0x20;
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encryptedBlock = Arrays.copyOfRange(dectyptedBlock, currentHashStart, currentHashStart + 0x20); //[0x20]; // 32 bytes - size of SHA256 hash
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SHA256hashes.add(encryptedBlock);
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}
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*/
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}
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catch (Exception e){
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e.printStackTrace();
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}
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/*
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byte[] rawData;
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long sha256recordsNumber = ncaSectionBlock.getSuperBlockPFS0().getHashTableSize() / 0x20;
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// Collect hashes
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@ -69,42 +133,7 @@ public class NCAContentPFS0 {
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raf.seek(pfs0Location);
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rawData = new byte[0x20]; // 32 bytes - size of SHA256 hash
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/*
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if (raf.read(rawData) != -1) {
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System.out.println("Encrypted");
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RainbowHexDump.hexDumpUTF8(rawData);
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}
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*/
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try {
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/*
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System.out.println("Decrypted?");
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Security.addProvider(new BouncyCastleProvider()); // TODO: DO FUCKING REMEMBER THIS SHIT FOR CTR
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IvParameterSpec iv = new IvParameterSpec(new byte[10]);
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SecretKeySpec key = new SecretKeySpec(decryptedKey, "AES");
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Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding", "BC");
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cipher.init(Cipher.DECRYPT_MODE, key, iv);
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byte[] decr = cipher.doFinal(rawData);
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RainbowHexDump.hexDumpUTF8(decr);
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*/
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}
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catch (Exception e){
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e.printStackTrace();
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}
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*/
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@ -195,6 +195,7 @@ public class NCAProvider {
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}
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else {
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// TODO
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}
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@ -1,5 +1,6 @@
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package konogonka.Tools.NCA.NCASectionTableBlock;
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import java.lang.reflect.Array;
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import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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@ -30,8 +31,7 @@ public class NCASectionBlock {
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private int BKTRs32Section2;
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private byte[] BKTRunknownSection2;
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private byte[] sectionCTRlow;
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private byte[] sectionCTRhigh;
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private byte[] sectionCTR;
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private byte[] unknownEndPadding;
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public NCASectionBlock(byte[] tableBlockBytes) throws Exception{
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BKTRs32Section2 = getLEint(BKTRfullHeader, 0x38);
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BKTRunknownSection2 = Arrays.copyOfRange(BKTRfullHeader, 0x3c, 0x40);
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sectionCTRlow = Arrays.copyOfRange(tableBlockBytes, 0x140, 0x144);
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sectionCTRhigh = Arrays.copyOfRange(tableBlockBytes, 0x144, 0x148);
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sectionCTR = Arrays.copyOfRange(tableBlockBytes, 0x140, 0x148);
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unknownEndPadding = Arrays.copyOfRange(tableBlockBytes, 0x148, 0x200);
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}
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@ -91,8 +90,11 @@ public class NCASectionBlock {
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public int getBKTRu32Section2() { return BKTRu32Section2; }
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public int getBKTRs32Section2() { return BKTRs32Section2; }
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public byte[] getBKTRunknownSection2() { return BKTRunknownSection2; }
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public byte[] getSectionCTRlow() { return sectionCTRlow; }
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public byte[] getSectionCTRhigh() { return sectionCTRhigh; }
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public byte[] getSectionCTR() { return sectionCTR; }
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// Sugar
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public byte[] getSectionCTRlow() { return Arrays.copyOfRange(sectionCTR, 0, 0x8); }
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public byte[] getSectionCTRhigh() { return Arrays.copyOfRange(sectionCTR, 0x8, 0x10); }
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public byte[] getUnknownEndPadding() { return unknownEndPadding; }
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}
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@ -24,16 +24,6 @@ public class SuperBlockPFS0 {
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pfs0offset = getLElong(sbBytes, 0x38);
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pfs0size = getLElong(sbBytes, 0x40);
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zeroes = Arrays.copyOfRange(sbBytes, 0x48, 0xf8);
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/*
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RainbowHexDump.hexDumpUTF8(SHA256hash);
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System.out.println(blockSize);
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System.out.println(unknownNumberTwo);
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System.out.println(hashTableOffset);
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System.out.println(hashTableSize);
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System.out.println(pfs0offset);
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System.out.println(pfs0size);
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RainbowHexDump.hexDumpUTF8(zeroes);
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*/
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}
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public byte[] getSHA256hash() { return SHA256hash; }
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34
src/main/java/konogonka/ctraes/AesCtr.java
Normal file
34
src/main/java/konogonka/ctraes/AesCtr.java
Normal file
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@ -0,0 +1,34 @@
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package konogonka.ctraes;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import java.security.Security;
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public class AesCtr {
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private static boolean BCinitialized = false;
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private void initBCProvider(){
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Security.addProvider(new BouncyCastleProvider());
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BCinitialized = true;
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}
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private Cipher cipher;
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public AesCtr(byte[] IVarray, byte[] keyArray) throws Exception{
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if ( ! BCinitialized)
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initBCProvider();
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IvParameterSpec iv = new IvParameterSpec(IVarray);
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SecretKeySpec key = new SecretKeySpec(keyArray, "AES");
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cipher = Cipher.getInstance("AES/CTR/NoPadding", "BC");
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cipher.init(Cipher.DECRYPT_MODE, key, iv);
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}
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public byte[] decrypt(byte[] encryptedData) throws Exception{
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return cipher.doFinal(encryptedData);
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}
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}
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@ -13,27 +13,35 @@
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<TitledPane text="PFS0">
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<content>
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<VBox spacing="5.0">
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<HBox VBox.vgrow="ALWAYS">
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<children>
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<Label text=" #">
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<padding>
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<Insets left="5.0" right="5.0" />
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</padding>
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<font>
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<Font name="System Bold" size="13.0" />
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</font>
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</Label>
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<Label text="SHA256 Hash">
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<padding>
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<Insets left="5.0" right="5.0" />
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</padding>
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<font>
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<Font name="System Bold" size="13.0" />
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</font>
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</Label>
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</children>
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</HBox>
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<VBox fx:id="sha256pane" VBox.vgrow="ALWAYS" />
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<TitledPane expanded="false" text="SHA256 hashes">
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<content>
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<VBox>
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<children>
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<HBox VBox.vgrow="ALWAYS">
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<children>
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<Label text=" #">
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<padding>
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<Insets left="5.0" right="5.0" />
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</padding>
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<font>
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<Font name="System Bold" size="13.0" />
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</font>
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</Label>
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<Label text="SHA256 Hash">
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<padding>
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<Insets left="5.0" right="5.0" />
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</padding>
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<font>
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<Font name="System Bold" size="13.0" />
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</font>
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</Label>
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</children>
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</HBox>
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<VBox fx:id="sha256pane" />
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</children>
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</VBox>
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</content>
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</TitledPane>
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<Separator prefWidth="200.0" />
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<fx:include fx:id="SectionPFS0" source="../NSP/NSPTab.fxml" />
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</VBox>
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@ -696,12 +696,12 @@
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<fx:include fx:id="NCASectionContentSecond" source="../NCA/NCASectionContent.fxml" />
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</content>
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</TitledPane>
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<TitledPane text="Section 2">
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<TitledPane expanded="false" text="Section 2">
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<content>
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<fx:include fx:id="NCASectionContentThird" source="../NCA/NCASectionContent.fxml" />
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</content>
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</TitledPane>
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<TitledPane text="Section 3">
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<TitledPane expanded="false" text="Section 3">
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<content>
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<fx:include fx:id="NCASectionContentFourth" source="../NCA/NCASectionContent.fxml" />
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</content>
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