ROM Hack WIP Yu-Gi-Oh! Legacy of the Duelist Save Hex Editing

Stoned · Apr 26, 2019

MrDexia said:
hi, i just tried to mod the money, but this just corrupt my data. can you help my? what im doing wrong?
View attachment 165058

It´s a Checksum Error

jmaverf · Apr 26, 2019

MrDexia said:
hi, i just tried to mod the money, but this just corrupt my data. can you help my? what im doing wrong?
View attachment 165058

There's a checksum

Stoned · Apr 26, 2019

Temporary Save to Start Post Added

Falo · Apr 27, 2019

Here if you need it, a very basic save editor, writting in under 5min in C#:

Code:

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace YuGiOhLOTD
{
    class Program
    {
        private static readonly uint[] poly8_lookup =
        {
            0, 0x77073096, 0xEE0E612C, 0x990951BA, 0x76DC419, 0x706AF48F,
            0xE963A535, 0x9E6495A3, 0xEDB8832, 0x79DCB8A4, 0xE0D5E91E,
            0x97D2D988, 0x9B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
            0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D,
            0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0,
            0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63,
            0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
            0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA,
            0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75,
            0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180,
            0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
            0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87,
            0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x1DB7106,
            0x98D220BC, 0xEFD5102A, 0x71B18589, 0x6B6B51F, 0x9FBFE4A5,
            0xE8B8D433, 0x7807C9A2, 0xF00F934, 0x9609A88E, 0xE10E9818,
            0x7F6A0DBB, 0x86D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4,
            0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B,
            0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA,
            0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
            0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541,
            0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC,
            0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F,
            0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
            0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E,
            0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
            0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x3B6E20C,
            0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x4DB2615, 0x73DC1683,
            0xE3630B12, 0x94643B84, 0xD6D6A3E, 0x7A6A5AA8, 0xE40ECF0B,
            0x9309FF9D, 0xA00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2,
            0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671,
            0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
            0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8,
            0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767,
            0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6,
            0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
            0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795,
            0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
            0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B,
            0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x26D930A,
            0x9C0906A9, 0xEB0E363F, 0x72076785, 0x5005713, 0x95BF4A82,
            0xE2B87A14, 0x7BB12BAE, 0xCB61B38, 0x92D28E9B, 0xE5D5BE0D,
            0x7CDCEFB7, 0xBDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8,
            0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
            0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF,
            0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE,
            0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D,
            0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
            0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C,
            0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
            0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02,
            0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
        };

        static unsafe uint crc32_byte(byte* data, int length)
        {
            uint crc = 0xFFFFFFFF;

            for (int i = 0; i < length; i++)
            {
                crc = poly8_lookup[(byte)(crc ^ data[i])] ^ (crc >> 8);
            }

            return crc; //Yu-Gi-Oh crc32
            //return (crc ^ 0xffffffff); //default crc32
        }

        static unsafe void Main(string[] args)
        {
            byte[] savegame = File.ReadAllBytes("savegame.dat");

            fixed (byte* p = savegame)
            {
                WriteUint32(p, 0xF74, 999999999);  //write money
                UpdateChecksum(p);
            }

            File.WriteAllBytes("savegame2.dat", savegame);
        }

        static unsafe void UpdateChecksum(void* p)
        {
            //IncreaseSaveCounter(p); //not needed for save editor
            GenerateChecksum(p);
        }

        static unsafe void GenerateChecksum(void* p)
        {
            WriteChecksum(p, 0);
            WriteChecksum(p, crc32_byte((byte*)p, 0xB3F4));
        }

        static unsafe void IncreaseSaveCounter(void* p)
        {
            *((uint*)p + 4) += 1;
        }

        static unsafe void WriteChecksum(void* p, uint value)
        {
            *((uint*)p + 3) = value;
        }

        static unsafe void WriteUint32(void* p, int Offset, uint value)
        {
            *(uint*)((byte*)p + Offset) = value;
        }


    }
}

ganons · Apr 27, 2019

CatNoire said:
You may use reNXpack and the game will run on 6.2

What about 5.1.0?

zestiva · Apr 27, 2019

ganons said:
What about 5.1.0?

no , the game develop by 5.6 SDK , must MasterKey6+

KuranKu · Apr 27, 2019

And hello

whyyes · Apr 28, 2019

Falo said:

Here if you need it, a very basic save editor, writting in under 5min in C#:

Code:

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace YuGiOhLOTD
{
    class Program
    {
        private static readonly uint[] poly8_lookup =
        {
            0, 0x77073096, 0xEE0E612C, 0x990951BA, 0x76DC419, 0x706AF48F,
            0xE963A535, 0x9E6495A3, 0xEDB8832, 0x79DCB8A4, 0xE0D5E91E,
            0x97D2D988, 0x9B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
            0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D,
            0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0,
            0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63,
            0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
            0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA,
            0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75,
            0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180,
            0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
            0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87,
            0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x1DB7106,
            0x98D220BC, 0xEFD5102A, 0x71B18589, 0x6B6B51F, 0x9FBFE4A5,
            0xE8B8D433, 0x7807C9A2, 0xF00F934, 0x9609A88E, 0xE10E9818,
            0x7F6A0DBB, 0x86D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4,
            0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B,
            0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA,
            0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
            0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541,
            0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC,
            0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F,
            0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
            0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E,
            0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
            0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x3B6E20C,
            0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x4DB2615, 0x73DC1683,
            0xE3630B12, 0x94643B84, 0xD6D6A3E, 0x7A6A5AA8, 0xE40ECF0B,
            0x9309FF9D, 0xA00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2,
            0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671,
            0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
            0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8,
            0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767,
            0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6,
            0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
            0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795,
            0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
            0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B,
            0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x26D930A,
            0x9C0906A9, 0xEB0E363F, 0x72076785, 0x5005713, 0x95BF4A82,
            0xE2B87A14, 0x7BB12BAE, 0xCB61B38, 0x92D28E9B, 0xE5D5BE0D,
            0x7CDCEFB7, 0xBDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8,
            0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
            0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF,
            0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE,
            0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D,
            0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
            0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C,
            0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
            0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02,
            0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
        };

        static unsafe uint crc32_byte(byte* data, int length)
        {
            uint crc = 0xFFFFFFFF;

            for (int i = 0; i < length; i++)
            {
                crc = poly8_lookup[(byte)(crc ^ data[i])] ^ (crc >> 8);
            }

            return crc; //Yu-Gi-Oh crc32
            //return (crc ^ 0xffffffff); //default crc32
        }

        static unsafe void Main(string[] args)
        {
            byte[] savegame = File.ReadAllBytes("savegame.dat");

            fixed (byte* p = savegame)
            {
                WriteUint32(p, 0xF74, 999999999);  //write money
                UpdateChecksum(p);
            }

            File.WriteAllBytes("savegame2.dat", savegame);
        }

        static unsafe void UpdateChecksum(void* p)
        {
            //IncreaseSaveCounter(p); //not needed for save editor
            GenerateChecksum(p);
        }

        static unsafe void GenerateChecksum(void* p)
        {
            WriteChecksum(p, 0);
            WriteChecksum(p, crc32_byte((byte*)p, 0xB3F4));
        }

        static unsafe void IncreaseSaveCounter(void* p)
        {
            *((uint*)p + 4) += 1;
        }

        static unsafe void WriteChecksum(void* p, uint value)
        {
            *((uint*)p + 3) = value;
        }

        static unsafe void WriteUint32(void* p, int Offset, uint value)
        {
            *(uint*)((byte*)p + Offset) = value;
        }


    }
}

I compiled this and got it to run, but I just want to edit my save for money, not anything else. I don't know what to leave out here

Falo · Apr 28, 2019

whyyes said:
I compiled this and got it to run, but I just want to edit my save for money, not anything else. I don't know what to leave out here

It is a sample code on how the checksum works, it's not really a save editor.
The only thing it does is this: "WriteUint32(p, 0xF74, 999999999); //write money"

whyyes · Apr 28, 2019

Falo said:
It is a sample code on how the checksum works, it's not really a save editor.
The only thing it does is this: "WriteUint32(p, 0xF74, 999999999); //write money"

And it applies the correct checksum?

zestiva · Apr 28, 2019

whyyes said:
And it applies the correct checksum?

010 editor can caculate crc32 checksum

whyyes · Apr 28, 2019

I just ended up using a Cheat on SX to get the same effect rather than mess around with save editing

nch93 · Apr 28, 2019

KuranKu said:
And hello

Nice to see u in here. Could u make one with Edizon? Like money and full cards x 99

zestiva · Apr 28, 2019

nch93 said:
Nice to see u in here. Could u make one with Edizon? Like money and full cards x 99

no , edizon can't caculate checksum

KuranKu · Apr 28, 2019

zestiva said:
no , edizon can't caculate checksum

leave that to me

KuranKu · Apr 28, 2019

currently working to make something userfriendly

KuranKu · Apr 28, 2019

Hmmm Sup

i think all in place here
getting ready this thing for pushout!

KuranKu · Apr 28, 2019

The Result Talk for it self ...

KuranKu · Apr 28, 2019

And Hello Guys Ones Again , Enjoy this little peace of work , Updated the OP check the "Save Editor" #Tab aswell
@Falo i would like tho thank you as well and credit you in the OP

Download:https://github.com/KranKRival/Yu-Gi-Oh-Legacy-of-the-Duelist-Save-Manager/releases
SourceCode:https://github.com/KranKRival/Yu-Gi-Oh-Legacy-of-the-Duelist-Save-Manager

nch93 · Apr 28, 2019

KuranKu said:
And Hello Guys Ones Again , Enjoy this little peace of work , Updated the OP check the "Save Editor" #Tab aswell
@Falo i would like tho thank you as well and credit you in the OP

Download:https://github.com/KranKRival/Yu-Gi-Oh-Legacy-of-the-Duelist-Save-Manager/releases
SourceCode:https://github.com/KranKRival/Yu-Gi-Oh-Legacy-of-the-Duelist-Save-Manager

Any chance for all cards x 99?

ROM Hack WIP Yu-Gi-Oh! Legacy of the Duelist Save Hex Editing

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