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[GUIDE] Server File Patchs

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In this thread I will compile all the public patchs. That way people understand whats being changed, to fix what. Also for the sake of always having the patchs on hand. Use these to patch your own files, or to follow in a debugger and learn whats being changed.

Disable Server File Packet Encryption​

Code:
coming soon

Helmet Packet Fix (See Other Chars Ingame)​

GameServer
Code:
00427C5B     0000           ADD BYTE PTR DS:[EAX],AL

130 LVL Loop Bug Fix​

GameServer
Code:
004DF6F5     8C00           MOV WORD PTR DS:[EAX],ES

Helmet Packet Fix (Character Select)​

GameServer
Code:
0042B7C4     0000           ADD BYTE PTR DS:[EAX],AL

Remove LoginServer Nation Check (ie "BAD CONNECTION" error)​

LoginServer
Code:
00406BAA     90             NOP
00406BAB     E9 FC000000    JMP LoginSer.00406CAC

Removing Zone Limit​

GameServer
Code:
004000FE   05 00AD5F25      ADD EAX,255FAD00
00400148   00E0             ADD AL,AH
00400149   E0 3E            LOOPDNE SHORT GameServ.00400189
00400150   0000             ADD BYTE PTR DS:[EAX],AL
00400151   0000             ADD BYTE PTR DS:[EAX],AL
00400152   0000             ADD BYTE PTR DS:[EAX],AL
004001F8   CC               INT3
004001F9   6F               OUTS DX,DWORD PTR ES:[EDI]               ; I/O command
00400220   AC               LODS BYTE PTR DS:[ESI]
00400221   17               POP SS                                   ; Modification of segment register
00400248   F4               HLT                                      ; Privileged command
00400249   111A             ADC DWORD PTR DS:[EDX],EBX
00400269   74 65            JE SHORT GameServ.004002D0
0040026A   65:78 74         JS SHORT GameServ.004002E1               ; Superfluous prefix
0040026B   78 74            JS SHORT GameServ.004002E1
0040026C   74 32            JE SHORT GameServ.004002A0
0040026D   3200             XOR AL,BYTE PTR DS:[EAX]
00400270   0010             ADD BYTE PTR DS:[EAX],DL
00400271   1000             ADC BYTE PTR DS:[EAX],AL
00400279   1000             ADC BYTE PTR DS:[EAX],AL
0040028C   2000             AND BYTE PTR DS:[EAX],AL
0040028F   60               PUSHAD
00400290   2E:              PREFIX CS:                               ; Superfluous prefix
00400291   64:61            POPAD                                    ; Superfluous prefix
00400292   61               POPAD
00400293   74 61            JE SHORT GameServ.004002F6
00400294   61               POPAD
00400295   3200             XOR AL,BYTE PTR DS:[EAX]
00400296   0000             ADD BYTE PTR DS:[EAX],AL
00400297   0000             ADD BYTE PTR DS:[EAX],AL
00400298   0010             ADD BYTE PTR DS:[EAX],DL
00400299   1000             ADC BYTE PTR DS:[EAX],AL
0040029A   0000             ADD BYTE PTR DS:[EAX],AL
0040029B   0000             ADD BYTE PTR DS:[EAX],AL
0040029C   00D0             ADD AL,DL
0040029D   D03E             SAR BYTE PTR DS:[ESI],1
0040029E   3E:0000          ADD BYTE PTR DS:[EAX],AL
0040029F   0000             ADD BYTE PTR DS:[EAX],AL
004002A0   0010             ADD BYTE PTR DS:[EAX],DL
004002A1   1000             ADC BYTE PTR DS:[EAX],AL
004002A2   0000             ADD BYTE PTR DS:[EAX],AL
004002A3   0000             ADD BYTE PTR DS:[EAX],AL
004002A4   0020             ADD BYTE PTR DS:[EAX],AH
004002A5   2035 00000000    AND BYTE PTR DS:[0],DH
004002A6   35 00000000      XOR EAX,0
004002A7   0000             ADD BYTE PTR DS:[EAX],AL
004002A8   0000             ADD BYTE PTR DS:[EAX],AL
004002A9   0000             ADD BYTE PTR DS:[EAX],AL
004002AA   0000             ADD BYTE PTR DS:[EAX],AL
004002AB   0000             ADD BYTE PTR DS:[EAX],AL
004002AC   0000             ADD BYTE PTR DS:[EAX],AL
004002AD   0000             ADD BYTE PTR DS:[EAX],AL
004002AE   0000             ADD BYTE PTR DS:[EAX],AL
004002AF   0000             ADD BYTE PTR DS:[EAX],AL
004002B0   0000             ADD BYTE PTR DS:[EAX],AL
004002B1   0000             ADD BYTE PTR DS:[EAX],AL
004002B2   0000             ADD BYTE PTR DS:[EAX],AL
004002B3   0040 00          ADD BYTE PTR DS:[EAX],AL
004002B4   40               INC EAX
004002B5   0000             ADD BYTE PTR DS:[EAX],AL
004002B6   00C0             ADD AL,AL
004002B7   C000 00          ROL BYTE PTR DS:[EAX],0                  ; Shift constant out of range 1..31
004002B8   0000             ADD BYTE PTR DS:[EAX],AL
004002B9   0000             ADD BYTE PTR DS:[EAX],AL
004002BA   0000             ADD BYTE PTR DS:[EAX],AL
004002BB   0000             ADD BYTE PTR DS:[EAX],AL
004002BC   0000             ADD BYTE PTR DS:[EAX],AL
004002BD   0000             ADD BYTE PTR DS:[EAX],AL
004002BE   0000             ADD BYTE PTR DS:[EAX],AL
004002BF   0000             ADD BYTE PTR DS:[EAX],AL
004002C0   0000             ADD BYTE PTR DS:[EAX],AL
004002C1   0000             ADD BYTE PTR DS:[EAX],AL
004002C2   0000             ADD BYTE PTR DS:[EAX],AL
004002C3   0000             ADD BYTE PTR DS:[EAX],AL
004002C4   0000             ADD BYTE PTR DS:[EAX],AL
004002C5   0000             ADD BYTE PTR DS:[EAX],AL
004002C6   0000             ADD BYTE PTR DS:[EAX],AL
004002C7   0000             ADD BYTE PTR DS:[EAX],AL
004002C8   0000             ADD BYTE PTR DS:[EAX],AL
004002C9   0000             ADD BYTE PTR DS:[EAX],AL
004002CA   0000             ADD BYTE PTR DS:[EAX],AL
004002CB   0000             ADD BYTE PTR DS:[EAX],AL
004002CC   0000             ADD BYTE PTR DS:[EAX],AL
004002CD   0000             ADD BYTE PTR DS:[EAX],AL
004002CE   0000             ADD BYTE PTR DS:[EAX],AL
004002CF   0000             ADD BYTE PTR DS:[EAX],AL
004002D0   0000             ADD BYTE PTR DS:[EAX],AL
004002D1   0000             ADD BYTE PTR DS:[EAX],AL
004002D2   0000             ADD BYTE PTR DS:[EAX],AL
004002D3   0000             ADD BYTE PTR DS:[EAX],AL
004002D4   0000             ADD BYTE PTR DS:[EAX],AL
004002D5   0000             ADD BYTE PTR DS:[EAX],AL
004002D6   0000             ADD BYTE PTR DS:[EAX],AL
004002D7   0000             ADD BYTE PTR DS:[EAX],AL
004002D8   0000             ADD BYTE PTR DS:[EAX],AL
004002D9   0000             ADD BYTE PTR DS:[EAX],AL
004002DA   0000             ADD BYTE PTR DS:[EAX],AL
004002DB   0000             ADD BYTE PTR DS:[EAX],AL
004002DC   0000             ADD BYTE PTR DS:[EAX],AL
004002DD   0000             ADD BYTE PTR DS:[EAX],AL
004002DE   0000             ADD BYTE PTR DS:[EAX],AL
004002DF   0000             ADD BYTE PTR DS:[EAX],AL
004002E0   0000             ADD BYTE PTR DS:[EAX],AL
004002E1   0000             ADD BYTE PTR DS:[EAX],AL
004002E2   0000             ADD BYTE PTR DS:[EAX],AL
004002E3   0000             ADD BYTE PTR DS:[EAX],AL
004002E4   0000             ADD BYTE PTR DS:[EAX],AL
004002E5   0000             ADD BYTE PTR DS:[EAX],AL
004002E6   0000             ADD BYTE PTR DS:[EAX],AL
004002E7   0000             ADD BYTE PTR DS:[EAX],AL
004002E8   0000             ADD BYTE PTR DS:[EAX],AL
004002E9   0000             ADD BYTE PTR DS:[EAX],AL
004002EA   0000             ADD BYTE PTR DS:[EAX],AL
004002EB   0000             ADD BYTE PTR DS:[EAX],AL
004002EC   0000             ADD BYTE PTR DS:[EAX],AL
004002ED   0000             ADD BYTE PTR DS:[EAX],AL
004002EE   0000             ADD BYTE PTR DS:[EAX],AL
004002EF   0000             ADD BYTE PTR DS:[EAX],AL
00459828   ? D4 27          AAM 27
00459829   ? 27             DAA
0045982A   ? 3900           CMP DWORD PTR DS:[EAX],EAX
004E1549  |. 83C4 04        |ADD ESP,4
004E154A  |? C40439         LES EAX,FWORD PTR DS:[ECX+EDI]           ;  Modification of segment register
004E154B  |? 04 39          ADD AL,39
004E154C  |. 3945 E0        |CMP DWORD PTR SS:[EBP-20],EAX
004E154D  |? 45             INC EBP
004E154E  |? E0 7D          LOOPDNE SHORT GameServ.004E15CD
00538863  |. C780 70480800 >MOV DWORD PTR DS:[EAX+84870],0F
00538864  |? 8070 48 08     XOR BYTE PTR DS:[EAX+48],8
00538865  |? 70 48          JO SHORT GameServ.005388AF
00538866  |? 48             DEC EAX
00538867  |? 0800           OR BYTE PTR DS:[EAX],AL
00538868  |? 000F           ADD BYTE PTR DS:[EDI],CL
00538869  |? 0F0000         SLDT WORD PTR DS:[EAX]
0053886A  |? 0000           ADD BYTE PTR DS:[EAX],AL
0053886B  |? 0000           ADD BYTE PTR DS:[EAX],AL
0053886C  |? 008B 45EC83B8  ADD BYTE PTR DS:[EBX+B883EC45],CL
00627FCC     00             DB 00
00627FCD     00             DB 00
00627FCE     00             DB 00
00627FCF     00             DB 00
00627FD0     00             DB 00
00627FD1     00             DB 00
00627FD2     00             DB 00
00627FD4     00             DB 00
00627FD5     00             DB 00
00627FD7     00             DB 00
00627FD8     00             DB 00
00627FD9     00             DB 00
00627FDA     00             DB 00
00627FDB     00             DB 00
00627FDC     00             DB 00
00627FDD     00             DB 00
00627FDE     00             DB 00
00627FE0     00             DB 00
00627FE1     00             DB 00
00627FE3     00             DB 00
00627FE4     00             DB 00
00627FE5     00             DB 00
00627FE6     00             DB 00
00627FE7     00             DB 00
00627FE9     00             DB 00
00627FEA     00             DB 00
00627FEB     00             DB 00
00627FEC     00             DB 00
00627FED     00             DB 00
00627FEE     00             DB 00
00627FEF     00             DB 00
00627FF0     00             DB 00
00627FF1     00             DB 00
00627FF2     00             DB 00
00627FF3     00             DB 00

Raising Player Limit To 256​

Connector
Code:
00418DE4  |? FF00           INC DWORD PTR DS:[EAX]

GameServer
Code:
00400268   2E:74 65         JE SHORT GameServ.004002D0               ; Superfluous prefix
00400269   74 65            JE SHORT GameServ.004002D0
0040026A   65:78 74         JS SHORT GameServ.004002E1               ; Superfluous prefix
0040026B   78 74            JS SHORT GameServ.004002E1
0040026C   74 32            JE SHORT GameServ.004002A0
0053ABD4  |? 0A00           OR AL,BYTE PTR DS:[EAX]

Helper
Code:
0042B544  |? FF00           INC DWORD PTR DS:[EAX]

LoginServer
Code:
0040CF44  |? FF00           INC DWORD PTR DS:[EAX]

Messenger
Code:
0040CF44  |? 04 68          ADD AL,68

Fixing PvP Mode v1​

GameServer
Code:
     003510C8         00         FF

Credits To: s0m3one & GHOST107 & Warmonger
 
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