DTA

Introduction

Research based on Accessing Mafias DTA files by MassaSnygga.

Archives

Hidden & Dangerous 2 (inc. Add-on)

Archive	Decryption key	Version
LangEnglish.dta	0xa0a0a0a0a0a0a0a0	ISD1
Maps.dta	0xf26527fab438d0a5	ISD0
Maps_C.dta	0xe26520fab038d0a0	ISD0
Maps_U.dta	0xf26520fab038d1a1	ISD0
Missions.dta	0x22bcda987654a3f0	ISD0
Models.dta	0x10acb2525d805259	ISD0
Others.dta	0x65f7ab23ea85902a	ISD0
Patch.dta	0x10acb2525d805270	ISD0
PatchX01.dta	0xa0a0a0a0a0a0a0a2	ISD1
PatchX02.dta	0xa0a0a0a0a0a0a0a3	ISD1
PatchX03.dta	0xa0a0a0a0a0a0a0a4	ISD1
SabreSquadron.dta	0xa0a0a0a0a0a0a0a1	ISD1
Scripts.dta	0xcf7612980ab4e72d	ISD0
Sounds.dta	0x8d2965ca4fe85106	ISD1

Mafia: City of Lost Heaven

Archive	Decryption key	Version
A0.dta	0xd8d0a975467acde0	ISD0
A1.dta	0x3d98766cde7009cd	ISD0
A2.dta	0x82a1c97b2d5085d4	ISD0
A3.dta	0x43876fea900cdba8	ISD0
A4.dta	0x43876fea900cdba8	ISD0
A5.dta	0xdeac5342760ce652	ISD0
A6.dta	0x64cd8d0a4bc97b2d	ISD0
A7.dta	0xd6fea900cdb76ce6	ISD0
A8.dta	0xd8dd8fac5324ace5	ISD0
A9.dta	0x6fee6324acda4783	ISD0
AA.dta	0x5342760cedeac652	ISD0
AB.dta	0xd8d0a975467acde0	ISD0
AC.dta	0x43876fea900cdba8	ISD0

Chameleon

Archive	Decryption key	Version
ISData.dta	0xdedc644Bde75ddf2	ISD1
Anims.dta	0xdedc644Bde75ddf2	ISD1
Bin.dta	0xdedc644Bde75ddf2	ISD1
Maps.dta	0xdedc644Bde75ddf2	ISD1
Maps1.dta	0xdedc644Bde75ddf2	ISD1
Missions.dta	0xdedc644Bde75ddf2	ISD1
Models.dta	0xdedc644Bde75ddf2	ISD1
Music.dta	0xdedc644Bde75ddf2	ISD1
Shadows.dta	0xdedc644Bde75ddf2	ISD1
Sounds.dta	0xdedc644Bde75ddf2	ISD1
Tables.dta	0xdedc644Bde75ddf2	ISD1

Decryption

Algorithm (C++)

// Simple
void Decrypt(void* pData, int length, unsigned long long key)
{
    unsigned char* pByte = reinterpret_cast<unsigned char*>(pData);
    unsigned char* pKey = reinterpret_cast<unsigned char*>(key);
    
    for (int i = 0; i < length; ++i)
        pByte[i] = ~((~pByte[i]) ^ pKey[i % 8]);
}


// Optimized
void Decrypt(void* pData, int length, unsigned long long key)
{
    int nLongLong = length / 8;
    int nBytes = length % 8;
    
    unsigned long long* pLongLong = reinterpret_cast<unsigned long long*>(pData);
    for (int i = 0; i < nLongLong; ++i)
    pLongLong[i] = ~((~pLongLong[i]) ^ key);
    
    if (nBytes > 0) {
        unsigned char* pByte = reinterpret_cast<unsigned char*>(&pLongLong[nLongLong]);
        unsigned char* pKey = reinterpret_cast<unsigned char*>(&key);
        for (int i = 0; i < nBytes; ++i)
            pByte[i] = ~((~pByte[i]) ^ pKey[i]);
    }
}

Structure

Archive header

Offset	Type	Description
0	32-bit INT	number of files
4	32-bit INT	file table offset
8	32-bit INT	file table size
12	32-bit INT	unknown

File table record

Offset	Type	Description
0	16-bit INT	8-bit checksum of upper filename
2	16-bit INT	filename length
4	32-bit INT	offset to file header
8	32-bit INT	offset to file data
12	16x 8-bit CHAR	filename hint

File header

Offset	Type	Description
0	32-bit INT	unknown
4	32-bit INT	unknown
8	64-bit INT	timestamp (FILETIME)
16	32-bit INT	filesize
20	32-bit INT	number of compressed blocks
24	16-bit INT	flags and filename length
28	4x 8-bit INT	unknown

Riff wave header

Offset	Type	Description
0	4x 8-bit CHAR	riff chunk id
4	32-bit INT	riff chunk size
8	4x 8-bit CHAR	riff type
12	4x 8-bit CHAR	format chunk id
16	32-bit INT	format chunk size
20	16-bit INT	format tag
22	16-bit INT	number of channels
24	32-bit INT	samples per second
28	32-bit INT	average bytes per second
32	16-bit INT	block align
34	16-bit INT	bits per sample
36	4x 8-bit CHAR	data chunk id
40	32-bit INT	data chunk size