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CDecrypt v 2.0b as released by crediar #2

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CDecrypt v 2.0b as released by crediar #2

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116 changes: 60 additions & 56 deletions main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -18,30 +18,39 @@
*/
#define _CRT_SECURE_NO_WARNINGS


unsigned char WiiUCommenDevKey[16] =
{
0x2F, 0x5C, 0x1B, 0x29, 0x44, 0xE7, 0xFD, 0x6F, 0xC3, 0x97, 0x96, 0x4B, 0x05, 0x76, 0x91, 0xFA,
};
unsigned char WiiUCommenKey[16] =
{
0xD7, 0xB0, 0x04, 0x02, 0x65, 0x9B, 0xA2, 0xAB, 0xD2, 0xCB, 0x0D, 0xB2, 0x7F, 0xA2, 0xB6, 0x56,
};

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <openssl/aes.h>
#include <openssl/sha.h>
#include <openssl\aes.h>
#include <openssl\sha.h>
#include <time.h>
#include <vector>
#include <direct.h>
#include <ctype.h>
#include <cstdint>
#include <sys/stat.h>

#pragma comment(lib,"libeay32.lib")

typedef uint64_t u64;
typedef int64_t s64;
typedef unsigned __int64 u64;
typedef signed __int64 s64;

typedef uint32_t u32;
typedef int32_t s32;
typedef unsigned int u32;
typedef signed int s32;

typedef uint16_t u16;
typedef int16_t s16;
typedef unsigned short u16;
typedef signed short s16;

typedef uint8_t u8;
typedef int8_t s8;
typedef unsigned char u8;
typedef signed char s8;

AES_KEY key;
u8 enc_title_key[16];
Expand Down Expand Up @@ -155,7 +164,7 @@ struct FEntry
unsigned short ContentID;
};

#define bs16(s) (unsigned short)( ((s)>>8) | ((s)<<8) )
#define bs16(s) (u16)( ((s)>>8) | ((s)<<8) )
#define bs32(s) (u32)( (((s)&0xFF0000)>>8) | (((s)&0xFF00)<<8) | ((s)>>24) | ((s)<<24) )

u32 bs24( u32 i )
Expand Down Expand Up @@ -269,7 +278,7 @@ void ExtractFileHash( FILE *in, u64 PartDataOffset, u64 FileOffset, u64 Size, ch
if( soffset+Size > WriteSize )
WriteSize = WriteSize - soffset;

fseeko( in, PartDataOffset+roffset, SEEK_SET );
_fseeki64( in, PartDataOffset+roffset, SEEK_SET );
while(Size > 0)
{
if( WriteSize > Size )
Expand Down Expand Up @@ -351,7 +360,7 @@ void ExtractFile( FILE *in, u64 PartDataOffset, u64 FileOffset, u64 Size, char *
if( soffset+Size > WriteSize )
WriteSize = WriteSize - soffset;

fseeko( in, PartDataOffset+roffset, SEEK_SET );
_fseeki64( in, PartDataOffset+roffset, SEEK_SET );

while(Size > 0)
{
Expand Down Expand Up @@ -379,13 +388,13 @@ s32 main( s32 argc, char*argv[])
{
char str[1024];

printf("CDecrypt v 1.0b by crediar\n");
printf("CDecrypt v 2.0b by crediar\n");
printf("Built: %s %s\n", __TIME__, __DATE__ );

if( argc != 4 )
if( argc != 3 )
{
printf("Usage:\n");
printf(" CDecrypt.exe tmd cetk ckey\n\n");
printf(" CDecrypt.exe tmd cetk\n\n");
return EXIT_SUCCESS;
}

Expand All @@ -404,20 +413,6 @@ s32 main( s32 argc, char*argv[])
perror("Failed to open cetk\n");
return EXIT_FAILURE;
}

u32 CKeyLen;
char *CKey = ReadFile( argv[3], &CKeyLen );
if( CKey == nullptr )
{
perror("Failed to open ckey\n");
return EXIT_FAILURE;
}

if( CKeyLen != 16 )
{
printf("ckey is wrong length\n");
return EXIT_FAILURE;
}

TitleMetaData *tmd = (TitleMetaData*)TMD;

Expand All @@ -430,30 +425,26 @@ s32 main( s32 argc, char*argv[])
printf("Title version:%u\n", bs16(tmd->TitleVersion) );
printf("Content Count:%u\n", bs16(tmd->ContentCount) );

AES_set_decrypt_key( (const u8*)CKey, CKeyLen*8, &key );
if( strcmp( TMD+0x140, "Root-CA00000003-CP0000000b" ) == 0 )
{
AES_set_decrypt_key( (const u8*)WiiUCommenKey, sizeof(WiiUCommenKey)*8, &key );
}
else if( strcmp( TMD+0x140, "Root-CA00000004-CP00000010" ) == 0 )
{
AES_set_decrypt_key( (const u8*)WiiUCommenDevKey, sizeof(WiiUCommenDevKey)*8, &key );
}
else
{
printf("Unknown Root type:\"%s\"\n", TMD+0x140 );
return EXIT_FAILURE;
}

memset( title_id, 0, sizeof(title_id) );

memcpy( title_id, TMD + 0x18C, 8 );
memcpy( enc_title_key, TIK + 0x1BF, 16 );

printf("Encrypted Title KEY:\n\t");
for(s32 i=0; i< sizeof(enc_title_key); ++i)
printf("%02X", enc_title_key[i]);
printf("\n");

printf("Title ID:\n\t");
for(s32 i=0; i< sizeof(title_id); ++i)
printf("%02X", title_id[i]);
printf("\n");

AES_cbc_encrypt(enc_title_key, dec_title_key, sizeof(dec_title_key), &key, title_id, AES_DECRYPT);

printf("Decrypted Title KEY:\n\t");
for(s32 i=0; i< sizeof(dec_title_key); ++i)
printf("%02X", dec_title_key[i]);
printf("\n");

AES_set_decrypt_key( dec_title_key, sizeof(dec_title_key)*8, &key);

char iv[16];
Expand Down Expand Up @@ -482,6 +473,13 @@ s32 main( s32 argc, char*argv[])

AES_cbc_encrypt( (const u8 *)(CNT), (u8 *)(CNT), CNTLen, &key, (u8*)(iv), AES_DECRYPT );

if( bs32(*(u32*)CNT) != 0x46535400 )
{
sprintf( str, "%08X.dec", bs32(tmd->Contents[0].ID) );
FileDump( str, CNT, CNTLen );
return EXIT_FAILURE;
}

FST *_fst = (FST*)(CNT);

printf("FSTInfo Entries:%u\n", bs32(_fst->EntryCount) );
Expand Down Expand Up @@ -524,23 +522,29 @@ s32 main( s32 argc, char*argv[])
printf("level error:%u\n", level );
break;
}
} else {

}
else
{
memset( Path, 0, 1024 );

for( s32 j=0; j<level; ++j )
{
if(j)
Path[strlen(Path)] = '/';
Path[strlen(Path)] = '\\';
memcpy( Path+strlen(Path), CNT + NameOff + bs24( fe[Entry[j]].NameOffset), strlen(CNT + NameOff + bs24( fe[Entry[j]].NameOffset) ) );
mkdir(Path, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
_mkdir(Path);
}
if(level)
Path[strlen(Path)] = '/';
Path[strlen(Path)] = '\\';
memcpy( Path+strlen(Path), CNT + NameOff + bs24( fe[i].NameOffset ), strlen(CNT + NameOff + bs24( fe[i].NameOffset )) );

u32 CNTSize = bs32(fe[i].FileLength);
u64 CNTOff = ((u64)bs32(fe[i].FileOffset))<<5;
u64 CNTOff = ((u64)bs32(fe[i].FileOffset));

if( (bs16(fe[i].Flags) & 4) == 0 )
{
CNTOff <<= 5;
}

printf("Size:%07X Offset:0x%010llX CID:%02X U:%02X %s\n", CNTSize, CNTOff, bs16(fe[i].ContentID), bs16(fe[i].Flags), Path );

Expand All @@ -553,7 +557,7 @@ s32 main( s32 argc, char*argv[])
FILE *cnt = fopen( str, "rb" );
if( cnt == NULL )
{
sprintf( str, "%08x", ContFileID );
sprintf( str, "%08X", ContFileID );
cnt = fopen( str, "rb" );
if( cnt == NULL )
{
Expand Down