mirror of
https://github.com/martravi/wiiqt.git
synced 2024-11-17 14:49:21 +01:00
590 lines
19 KiB
C++
590 lines
19 KiB
C++
#include "savedatabin.h"
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#include "aes.h"
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#include "md5.h"
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#include "ec.h"
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SaveDataBin::SaveDataBin( QByteArray stuff )
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{
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// qDebug() << "SaveDataBin::SaveDataBin" << hex << stuff.size();
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_ok = false;
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ngID = 0;
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ngKeyID = 0;
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sg.tid = 0;
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if( stuff.size() < 0xf140 )//header + backup header
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{
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qWarning() << "SaveDataBin::SaveDataBin -> size is too small";
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return;
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}
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quint32 size = 0xf0c0;
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QByteArray header( size, '\0' );
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//decrypt the header
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quint8 iv[ 16 ] = SD_IV;
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quint8 sdkey[ 16 ] = SD_KEY;
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aes_set_key( sdkey );
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aes_decrypt( iv, (quint8*)stuff.data(), (quint8*)header.data(), size );
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//check MD5
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quint8 md5blanker[ 16 ] = MD5_BLANKER;
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QByteArray expected = header.mid( 0xe, 16 );
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QByteArray headerWithBlanker = header.left( 0xe ) + QByteArray( (const char*)&md5blanker, 16 ) + header.right( 0xf0a2 );
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//hexdump( headerWithBlanker.left( 0x50 ) );
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MD5 hash;
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hash.update( headerWithBlanker.data(), size );
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hash.finalize();
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QByteArray actual = QByteArray( (const char*)hash.hexdigestChar(), 16 );
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if( actual != expected )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> md5 mismatch";
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hexdump( expected );
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hexdump( actual );
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}
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//read the tid & banner.bin size
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quint32 bnrSize;
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quint8 bnrPerm;
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QDataStream ds( header );
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ds.setByteOrder( QDataStream::BigEndian );
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ds >> sg.tid;
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ds >> bnrSize;
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ds >> bnrPerm;
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if( bnrSize < 0x72a0 || bnrSize > 0xf0a0 || ( bnrSize - 0x60a0 ) % 0x1200 )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> bad size" << hex << bnrSize;
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return;
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}
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//add the entry for banner.bin in the save struct
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quint8 attr = ( bnrPerm << 2 ) | NAND_FILE;
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sg.attr << attr;
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sg.entries << "/banner.bin";
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sg.data << header.mid( 0x20, bnrSize );
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QBuffer b( &stuff );
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b.open( QIODevice::ReadOnly );
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b.seek( size );
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//read the Bk header
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quint32 tmp;
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quint32 cnt;
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quint32 fSize;
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quint32 tSize;
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b.read( (char*)&tmp, 4 );
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tmp = qFromBigEndian( tmp );
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if( tmp != 0x70 )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> bad hdr size" << hex << tmp;
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b.close();
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return;
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}
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b.read( (char*)&tmp, 4 );
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tmp = qFromBigEndian( tmp );
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if( tmp != 0x426b0001 )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> bad magic" << hex << tmp;
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b.close();
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return;
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}
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b.read( (char*)&tmp, 4 );
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ngID = qFromBigEndian( tmp );
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//qDebug() << "NG id:" << hex << ngID;
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b.read( (char*)&tmp, 4 );
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cnt = qFromBigEndian( tmp );
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b.read( (char*)&tmp, 4 );
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fSize = qFromBigEndian( tmp );
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b.seek( b.pos() + 8 );
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b.read( (char*)&tmp, 4 );
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tSize = qFromBigEndian( tmp );
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//qDebug() << "cnt :" << hex << cnt;
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//qDebug() << "fSize:" << hex << fSize;
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//qDebug() << "tSize:" << hex << tSize << stuff.size();
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if( (quint32)stuff.size() < fSize + 0xf140 )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> buffer size is less than expected" << hex << fSize;
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b.close();
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return;
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}
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ngMac = stuff.mid( 0xf128, 6 );
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//qDebug() << "ngMac:" << ngMac.toHex();
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//read all the files and folders
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b.seek( 0xf140 );
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for( quint32 i = 0; i < cnt; i++ )
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{
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//QByteArray peek = b.peek( 0x80 );
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//hexdump( peek );
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quint32 size;
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quint8 perm;
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quint8 attr;
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quint8 type;
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quint32 start = b.pos();
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quint8 iv[ 0x10 ];
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QByteArray name;
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b.read( (char*)&tmp, 4 );
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tmp = qFromBigEndian( tmp );
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if( tmp != 0x03adf17e )
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{
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qWarning() << "SaveDataBin::SaveDataBin -> bad file magic" << hex << i << tmp;
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b.close();
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return;
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}
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b.read( (char*)&tmp, 4 );
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size = qFromBigEndian( tmp );
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b.read( (char*)&perm, 1 );
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b.read( (char*)&attr, 1 );//?
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b.read( (char*)&type, 1 );
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name = b.read( 0x45 );
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b.read( (char*)&iv, 0x10 );
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/*qDebug() << "size:" << hex << size
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<< "perm:" << perm
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<< "attr:" << attr
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<< "type:" << type
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<< "name:" << QString( name )
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<< "iv:" << QByteArray( (const char*)iv, 0x10 ).toHex();*/
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perm = ( perm << 2 ) | type;
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//qDebug() << "perm2:" << hex << perm;
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sg.entries << "/" + name;
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sg.attr << perm;
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switch( type )
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{
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case NAND_FILE:
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{
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QByteArray encData = stuff.mid( start + 0x80, RU( size, 0x40 ) );
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QByteArray decData( RU( size, 0x40 ), '\0' );
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aes_set_key( sdkey );
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aes_decrypt( iv, (quint8*)encData.data(), (quint8*)decData.data(), RU( size, 0x40 ) );
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decData.resize( size );
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sg.data << decData;
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/*qDebug() << QString( name );
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qDebug() << "size:" << hex << size;
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hexdump( decData, 0, 0x30 );*/
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}
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break;
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case NAND_DIR:
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break;
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default:
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qWarning() << "SaveDataBin::SaveDataBin -> unknown type" << hex << i << type;
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return;
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break;
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}
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//seek to beginning of next file
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b.seek( start + 0x80 + RU( size, 0x40 ) );
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}
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//get a couple keys useful for repacking
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quint32 cStart = b.pos();
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//qDebug() << "pos:" << hex << (quint32)b.pos();
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b.seek( b.pos() + 0x144 );
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b.read( (char*)&tmp, 4 );
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ngKeyID = qFromBigEndian( tmp );
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ngSig = stuff.mid( cStart + 0x44, 0x3c );
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//qDebug() << "ngKeyID:" << hex << ngKeyID;
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//qDebug() << "ngSig :" << hex << ngSig.toHex();
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//check the cert mumbojombo
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b.close();
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quint32 data_size = tSize - 0x340;
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//qDebug() << hex << data_size << tSize;
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QByteArray sha1H = GetSha1( stuff.mid( 0xf0c0, data_size ) );
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sha1H = GetSha1( sha1H );
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_ok = check_ec( (quint8*)stuff.mid( cStart + 0x40, 0x180 ).data(),
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(quint8*)stuff.mid( cStart + 0x1c0, 0x180 ).data(),
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(quint8*)stuff.mid( cStart, 0x40 ).data(),
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(quint8*)sha1H.data() );
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//qDebug() << "_ok:" << _ok;
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}
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SaveDataBin::SaveDataBin( const SaveGame &old )
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{
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ngID = 0;
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ngKeyID = 0;
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sg = old;
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_ok = IsValidSave( sg );
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}
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const QByteArray SaveDataBin::Data( const QByteArray &ngPriv, const QByteArray &ngSig, const QByteArray &ngMac, quint32 ngId, quint32 ngKeyId )
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{
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if( !IsValidSave( sg ) )
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{
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qWarning() << "SaveDataBin::Data -> invalid save data";
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return QByteArray();
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}
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quint8 tmp8;
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QByteArray bnr = DataFromSave( sg, "/banner.bin" );
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if( bnr.isEmpty() )
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{
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qWarning() << "SaveDataBin::Data -> no banner.bin found in the save";
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return QByteArray();
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}
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quint32 ng_ID = ngId ? ngId : ngID;
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quint32 ng_Key_ID = ngKeyId ? ngKeyId : this->ngKeyID;
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QByteArray ng_Sig = ngSig.size() ? ngSig : this->ngSig;
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QByteArray ng_Mac = ngMac.size() ? ngMac : this->ngMac;
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quint32 tmp32;
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quint8 md5blanker[ 16 ] = MD5_BLANKER;
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//quick sanity checks TODO.. probably need more up in here
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if( ng_Mac.size() != 6 || !ng_ID || !ng_Key_ID || ng_Sig.size() != 0x3c || ng_Mac.size() != 6 || ngPriv.size() != 30 )
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{
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qWarning() << "SaveDataBin::Data -> something isnt right:\n" << ng_Mac.toHex()
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<< "\n" << ng_Sig.toHex()
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<< "\n" << ng_Mac.toHex()
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<< "\n" << ngPriv.toHex()
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<< "\n" << hex << ng_ID
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<< "\n" << ng_Key_ID;
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return QByteArray();
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}
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//make the different byteArrays that make up this beast and assemble them all at the end
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QByteArray header( 0xd, '\0' );
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QBuffer b( &header );
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b.open( QIODevice::WriteOnly );
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quint64 tmp64 = qFromBigEndian( sg.tid ); //tid
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b.write( (const char*)&tmp64, 8 );
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tmp32 = (quint32)qFromBigEndian( (quint32)bnr.size() ); //size of banner.bin
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b.write( (const char*)&tmp32, 4 );
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tmp8 = AttrFromSave( sg, "/banner.bin" ); //attributes of banner.bin
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tmp8 >>= 2;
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b.write( (const char*)&tmp8, 1 );
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tmp8 = 0; //nocopy or some shit like that?
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b.write( (const char*)&tmp8, 1 );
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b.close();
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QByteArray header2 = header +
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QByteArray( (const char*)&md5blanker, 16 ) +
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QByteArray( 2, '\0' ); //md5 blanker + padding to 0x20
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header2 += bnr; //add the banner.bin
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header2 = PaddedByteArray( header2, 0xf0c0 ); //pad to 0xf0c0
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MD5 hash;
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hash.update( header2.data(), 0xf0c0 );
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hash.finalize();
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QByteArray actual = QByteArray( (const char*)hash.hexdigestChar(), 16 );
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header += actual + QByteArray( 2, '\0' ) + bnr;
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header = PaddedByteArray( header, 0xf0c0 );
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quint8 iv[ 16 ] = SD_IV;
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quint8 sdkey[ 16 ] = SD_KEY;
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aes_set_key( sdkey );
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QByteArray header3( 0xf0c0, '\0' );//wtf
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aes_encrypt( iv, (quint8*)header.data(), (quint8*)header3.data(), 0xf0c0 ); //encrypt the header
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quint32 fSize = 0;
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quint32 tSize = 0;
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quint32 cnt = sg.attr.size();
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//do the file stuff
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QByteArray files;
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quint16 idx = 0;
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for( quint16 i = 0; i < cnt; i++ )
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{
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if( sg.entries.at( i ) == "/banner.bin" )
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{
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idx++;
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continue;
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}
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//qDebug() << "adding file" << sg.entries.at( i );
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quint32 size = 0;
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quint8 attr = sg.attr.at( i );
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quint8 type = NAND_ATTR_TYPE( attr );
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attr >>= 2;
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QByteArray fHeader( 0x80, '\0' );
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QBuffer c( &fHeader );
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c.open( QIODevice::WriteOnly );
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tmp32 = qFromBigEndian( (quint32)0x3adf17e ); //file magic
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c.write( (const char*)&tmp32, 4 );
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c.seek( 8 );
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c.write( (const char*)&attr, 1 ); //permissions
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tmp8 = 0;
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c.write( (const char*)&tmp8, 1 ); //?
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c.write( (const char*)&type, 1 ); //file or dir
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QString name = sg.entries.at( i ); //path
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name.remove( 0, 1 ); //remove leading "/"
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c.write( name.toLatin1() );
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if( type == NAND_FILE )
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{
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size = sg.data.at( idx ).size(); //write actual file size
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c.seek( 4 );
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tmp32 = qFromBigEndian( size );
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c.write( (const char*)&tmp32, 4 );
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c.close();
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files += fHeader;
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quint8 iv[ 0x10 ];//copy the iv to keep aes_encrypt from altering the original
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memcpy( &iv, ((quint8*)fHeader.data()) + 0x50, 0x10 );
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QByteArray encData( RU( size, 0x40 ), '\0' );
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QByteArray decPaddad = PaddedByteArray( sg.data.at( idx ), 0x40 );
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aes_set_key( sdkey );
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aes_encrypt( (quint8*)&iv,
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(const quint8*)decPaddad.data(),
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(quint8*)encData.data(),
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encData.size() );
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quint32 fs = encData.size();
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fSize += 0x80 + fs;
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files += encData;
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idx++;
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}
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else
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{
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c.seek( 4 );
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c.write( (const char*)&size, 4 );
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c.close();
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fSize += 0x80;
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files += fHeader;
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}
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}
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QByteArray bkHeader( 0x80, '\0' ); //backup header
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b.setBuffer( &bkHeader );
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b.open( QIODevice::WriteOnly );
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tmp32 = qFromBigEndian( (quint32)0x70 ); //bk header size
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b.write( (const char*)&tmp32, 4 );
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tmp32 = qFromBigEndian( (quint32)0x426b0001 ); //magic word ( & version )?
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b.write( (const char*)&tmp32, 4 );
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tmp32 = qFromBigEndian( ng_ID ); //ngid
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b.write( (const char*)&tmp32, 4 );
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tmp32 = qFromBigEndian( cnt - 1 ); //file & folder count ( -banner.bin )
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b.write( (const char*)&tmp32, 4 );
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tmp32 = qFromBigEndian( fSize ); //padded data size
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b.write( (const char*)&tmp32, 4 );
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b.seek( 0x1c );
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tmp32 = qFromBigEndian( fSize + 0x3c0 ); //total size
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b.write( (const char*)&tmp32, 4 );
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b.seek( 0x60 );
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tmp64 = qFromBigEndian( sg.tid ); //tid
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b.write( (const char*)&tmp64, 8 );
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b.write( ng_Mac ); //ngmac
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b.close();
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//make the magic cert stuff
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char signer[ 64 ];
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char name[ 64 ];
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quint8 sig[ 0x40 ];
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quint8 ng_cert[ 0x180 ];
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quint8 ap_cert[ 0x180 ];
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quint8 ap_priv[ 30 ];
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quint8 ap_sig[ 60 ];
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sprintf( signer, "Root-CA00000001-MS00000002" );
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sprintf( name, "NG%08x", ng_ID );
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make_ec_cert( (quint8*)&ng_cert, (quint8*)ng_Sig.data(), signer, name, (quint8*)ngPriv.data(), ng_Key_ID );
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memset( (char*)&ap_priv, 0, sizeof( ap_priv ) );
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ap_priv[ 10 ] = 1;
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memset( (char*)&ap_sig, 81, sizeof( ap_sig ) );
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sprintf( signer, "Root-CA00000001-MS00000002-NG%08x", ng_ID );
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sprintf( name, "AP%08x%08x", 1, 2 );
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make_ec_cert( (quint8*)&ap_cert, (quint8*)&ap_sig, signer, name, (quint8*)&ap_priv, 0 );
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QByteArray sha = GetSha1( QByteArray( (const char*)&ap_cert + 0x80, 0x100 ) );
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generate_ecdsa( (quint8*)&ap_sig, (quint8*)&ap_sig + 30, (quint8*)ngPriv.data(), (quint8*)sha.data() );
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make_ec_cert( (quint8*)&ap_cert, (quint8*)&ap_sig, signer, name, (quint8*)&ap_priv, 0 );
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tSize = fSize + 0x80;
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QByteArray stuffToHash = bkHeader + files;
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sha = GetSha1( stuffToHash );
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sha = GetSha1( sha );
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generate_ecdsa( (quint8*)&sig, (quint8*)&sig + 30, (quint8*)&ap_priv, (quint8*)sha.data() );
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tmp32 = qFromBigEndian( 0x2f536969 );
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memcpy( (char*)&sig + 60, (char*)&tmp32, 4 );
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// hexdump( QByteArray( (const char*)&sig, 0x40 ) );
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// hexdump( QByteArray( (const char*)&ng_cert, 0x180 ) );
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// hexdump( QByteArray( (const char*)&ap_cert, 0x180 ) );
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return header3
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+ bkHeader
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+ files
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+ QByteArray( (const char*)&sig, 0x40 )
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+ QByteArray( (const char*)&ng_cert, 0x180 )
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+ QByteArray( (const char*)&ap_cert, 0x180 );
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}
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quint32 SaveDataBin::NgID()
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{
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return ngID;
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}
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quint32 SaveDataBin::NgKeyID()
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{
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return ngKeyID;
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}
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const QByteArray SaveDataBin::NgSig()
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{
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return ngSig;
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}
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const QByteArray SaveDataBin::NgMac()
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{
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return ngMac;
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}
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const QByteArray SaveDataBin::DataBinFromSaveStruct( const SaveGame &old, const QByteArray &ngPriv, const QByteArray &ngSig,
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const QByteArray &ngMac, quint32 ngId, quint32 ngKeyId )
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{
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SaveDataBin sb( old );
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if( !sb.IsOk() )
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return QByteArray();
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return sb.Data( ngPriv, ngSig, ngMac, ngId, ngKeyId );
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}
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const SaveGame SaveDataBin::StructFromDataBin( const QByteArray &dataBin )
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{
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SaveDataBin sb( dataBin );//no need to check if it is loaded ok, the returned item will have 0 for TID and nothing in it
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return sb.SaveStruct();
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}
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const QByteArray SaveDataBin::GetFile( const QByteArray &dataBin, const QString &path )
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{
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SaveDataBin sb( dataBin );
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if( !sb.IsOk() )
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return QByteArray();
|
|
|
|
return DataFromSave( sb.SaveStruct(), path );
|
|
}
|
|
|
|
const QByteArray SaveDataBin::GetBanner( const QByteArray &dataBin )
|
|
{
|
|
if( dataBin.size() < 0xf140 )//header + backup header
|
|
{
|
|
qWarning() << "SaveDataBin::GetBanner -> size is too small";
|
|
return QByteArray();
|
|
}
|
|
quint32 size = 0xf0c0;
|
|
QByteArray header( size, '\0' );
|
|
|
|
//decrypt the header
|
|
quint8 iv[ 16 ] = SD_IV;
|
|
quint8 sdkey[ 16 ] = SD_KEY;
|
|
aes_set_key( sdkey );
|
|
aes_decrypt( iv, (const quint8*)dataBin.constData(), (quint8*)header.data(), size );
|
|
|
|
//read banner.bin size
|
|
quint32 bnrSize;
|
|
QBuffer b( &header );
|
|
b.open( QIODevice::ReadOnly );
|
|
b.seek( 8 );
|
|
b.read( (char*)&bnrSize, 4 );
|
|
b.close();
|
|
bnrSize = qFromBigEndian( bnrSize );
|
|
|
|
//checken der sizen
|
|
if( bnrSize < 0x72a0 || bnrSize > 0xf0a0 || ( bnrSize - 0x60a0 ) % 0x1200 )
|
|
{
|
|
qWarning() << "SaveDataBin::GetBanner -> bad size" << hex << bnrSize;
|
|
return QByteArray();
|
|
}
|
|
return header.mid( 0x20, bnrSize );
|
|
}
|
|
|
|
quint32 SaveDataBin::GetSize( QByteArray dataBin )
|
|
{
|
|
if( dataBin.size() < 0xf140 )//header + backup header
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> size is too small";
|
|
return 0;
|
|
}
|
|
quint32 ret = 0;
|
|
quint32 size = 0xf0c0;
|
|
QByteArray header( size, '\0' );
|
|
|
|
//decrypt the header
|
|
quint8 iv[ 16 ] = SD_IV;
|
|
quint8 sdkey[ 16 ] = SD_KEY;
|
|
aes_set_key( sdkey );
|
|
aes_decrypt( iv, (quint8*)dataBin.data(), (quint8*)header.data(), size );
|
|
//hexdump( header, 0, 0x20 );
|
|
//check MD5
|
|
quint8 md5blanker[ 16 ] = MD5_BLANKER;
|
|
QByteArray expected = header.mid( 0xe, 16 );
|
|
QByteArray headerWithBlanker = header.left( 0xe ) + QByteArray( (const char*)&md5blanker, 16 ) + header.right( 0xf0a2 );
|
|
MD5 hash;
|
|
hash.update( headerWithBlanker.data(), size );
|
|
hash.finalize();
|
|
|
|
QByteArray actual = QByteArray( (const char*)hash.hexdigestChar(), 16 );
|
|
if( actual != expected )
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> md5 mismatch";
|
|
hexdump( expected );
|
|
hexdump( actual );
|
|
}
|
|
//read banner.bin size
|
|
quint32 bnrSize;
|
|
QBuffer buf ( &header );
|
|
buf.open( QIODevice::ReadOnly );
|
|
buf.seek( 8 );
|
|
buf.read( (char*)&bnrSize, 4 );
|
|
bnrSize = qFromBigEndian( bnrSize );
|
|
|
|
if( bnrSize < 0x72a0 || bnrSize > 0xf0a0 || ( bnrSize - 0x60a0 ) % 0x1200 )
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> bad size" << hex << bnrSize;
|
|
return 0;
|
|
}
|
|
buf.close();
|
|
buf.setBuffer( &dataBin );
|
|
buf.open( QIODevice::ReadOnly );
|
|
buf.seek( 0xf0c0 );
|
|
//read the Bk header
|
|
quint32 tmp;
|
|
quint32 cnt;
|
|
|
|
buf.read( (char*)&tmp, 4 );
|
|
tmp = qFromBigEndian( tmp );
|
|
if( tmp != 0x70 )
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> bad hdr size" << hex << tmp;
|
|
buf.close();
|
|
return 0;
|
|
}
|
|
buf.read( (char*)&tmp, 4 );
|
|
tmp = qFromBigEndian( tmp );
|
|
if( tmp != 0x426b0001 )
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> bad magic" << hex << tmp;
|
|
buf.close();
|
|
return 0;
|
|
}
|
|
buf.seek( 0xf0cc );
|
|
buf.read( (char*)&tmp, 4 );
|
|
cnt = qFromBigEndian( tmp );
|
|
//qDebug() << "cnt :" << hex << cnt;
|
|
buf.seek( 0xf140 );
|
|
ret += bnrSize;
|
|
for( quint32 i = 0; i < cnt; i++ )
|
|
{
|
|
//QByteArray peek = buf.peek( 0x80 );
|
|
//hexdump( peek );
|
|
quint32 size;
|
|
quint32 start = buf.pos();
|
|
buf.read( (char*)&tmp, 4 );
|
|
tmp = qFromBigEndian( tmp );
|
|
if( tmp != 0x03adf17e )
|
|
{
|
|
qWarning() << "SaveDataBin::GetSize -> bad file magic" << hex << i << tmp;
|
|
break;
|
|
}
|
|
buf.read( (char*)&tmp, 4 );
|
|
size = qFromBigEndian( tmp );
|
|
ret += size;
|
|
|
|
//seek to beginning of next file
|
|
buf.seek( start + 0x80 + RU( size, 0x40 ) );
|
|
}
|
|
buf.close();
|
|
return ret;
|
|
}
|