天堂2数据包加密解密文档

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{ 天堂2数据包加密解密文档 }

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{ 时间: 2004-2-19 }

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{ 编写者: nzinzi }

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{数据包加密代码system\Network.dll}

//----------------------------------------------------------------

// 登陆数据包 BlowFish

//----------------------------------------------------------------

//----------------------------------------------------------------

$10001000 BlowFish 加密函数

//----------------------------------------------------------------

//----------------------------------------------------------------

$10001880 BlowFish 初始化函数 填充S盒P盒 KEY = '[;''.]94-31==-%&@!^+] '

//----------------------------------------------------------------

//----------------------------------------------------------------

$10006BD6 初始化游戏数据包KEY

//----------------------------------------------------------------

::10006BD6:: 8890 D4490000 MOV [EAX+49D4],DL

::10006BDC:: 8B4424 08 MOV EAX,[ESP+8]

::10006BE0:: 8B4E 3C MOV ECX,[ESI+3C]

::10006BE3:: 99 CDQ

::10006BE4:: 8981 E0490000 MOV [ECX+49E0],EAX

::10006BEA:: 81CA A16C5487 OR EDX,87546CA1

::10006BF0:: 8991 E4490000 MOV [ECX+49E4],EDX

::10006BF6:: 8B4424 08 MOV EAX,[ESP+8]

::10006BFA:: 8B4E 3C MOV ECX,[ESI+3C]

::10006BFD:: 99 CDQ

::10006BFE:: 8981 D8490000 MOV [ECX+49D8],EAX

::10006C04:: 81CA A16C5487 OR EDX,87546CA1

::10006C0A:: 8991 DC490000 MOV [ECX+49DC],EDX

//----------------------------------------------------------------

** ** ** ** A1 6C 54 87 ** ** ** ** A1 6C 54 87

|| || || || || || || || || || || || || || || ||

|| || || || || || || || || || || || +++++++++++---常量($87546CA1)

|| || || || || || || || +++++++++++---------------RECV长度累加值 初始值服务器返回

|| || || || +++++++++++---------------------------常量($87546CA1) 跟RECV一致

+++++++++++---------------------------------------SEND长度累加值

//----------------------------------------------------------------

$100023D0 游戏数据包加密SEND

//----------------------------------------------------------------

::100023D0:: 8B5424 04 MOV EDX,[ESP+4]

::100023D4:: 8A0A MOV CL,[EDX]

::100023D6:: 56 PUSH ESI

::100023D7:: 8B7424 0C MOV ESI,[ESP+C]

::100023DB:: 8A06 MOV AL,[ESI]

::100023DD:: 32C8 XOR CL,AL

::100023DF:: 57 PUSH EDI

::100023E0:: 8B7C24 14 MOV EDI,[ESP+14]

::100023E4:: 880A MOV [EDX],CL

::100023E6:: B9 01000000 MOV ECX,1

::100023EB:: 3BF9 CMP EDI,ECX

::100023ED:: 7E 16 JLE SHORT 10002405 \:JMPDOWN

::100023EF:: 53 PUSH EBX

::100023F0:: 8A5C11 FF MOV BL,[ECX+EDX-1] \:BYJMP JmpBy:10002402,

::100023F4:: 8BC1 MOV EAX,ECX

::100023F6:: 83E0 07 AND EAX,7

::100023F9:: 321C30 XOR BL,[EAX+ESI]

::100023FC:: 301C11 XOR [ECX+EDX],BL

::100023FF:: 41 INC ECX

::10002400:: 3BCF CMP ECX,EDI

::10002402:: 7C EC JL SHORT 100023F0 \:JMPUP

::10002404:: 5B POP EBX

::10002405:: 8B0E MOV ECX,[ESI] \:BYJMP JmpBy:100023ED,

::10002407:: 8BC7 MOV EAX,EDI

::10002409:: 99 CDQ

::1000240A:: 03C8 ADD ECX,EAX

::1000240C:: 8B46 04 MOV EAX,[ESI+4]

::1000240F:: 13C2 ADC EAX,EDX

::10002411:: 5F POP EDI

::10002412:: 890E MOV [ESI],ECX

::10002414:: 8946 04 MOV [ESI+4],EAX

::10002417:: 5E POP ESI

::10002418:: C2 0C00 RETN C

//----------------------------------------------------------------

$10002420 游戏数据包RECV解密

//----------------------------------------------------------------

::10002420:: 55 PUSH EBP

::10002421:: 8B6C24 10 MOV EBP,[ESP+10]

::10002425:: 56 PUSH ESI

::10002426:: 8B7424 0C MOV ESI,[ESP+C]

::1000242A:: 8A16 MOV DL,[ESI]

::1000242C:: 57 PUSH EDI

::1000242D:: 8B7C24 14 MOV EDI,[ESP+14]

::10002431:: 8A07 MOV AL,[EDI]

::10002433:: 32C2 XOR AL,DL

::10002435:: B9 01000000 MOV ECX,1

::1000243A:: 3BE9 CMP EBP,ECX

::1000243C:: 8806 MOV [ESI],AL

::1000243E:: 7E 1B JLE SHORT 1000245B \:JMPDOWN

::10002440:: 53 PUSH EBX

::10002441:: 8A0431 MOV AL,[ECX+ESI] \:BYJMP JmpBy:10002458,

::10002444:: 8BD9 MOV EBX,ECX

::10002446:: 83E3 07 AND EBX,7

::10002449:: 8A1C3B MOV BL,[EBX+EDI]

::1000244C:: 32D8 XOR BL,AL

::1000244C:: 32D8 XOR BL,AL

::1000244E:: 32DA XOR BL,DL

::10002450:: 881C31 MOV [ECX+ESI],BL

::10002453:: 41 INC ECX

::10002454:: 3BCD CMP ECX,EBP

::10002456:: 8AD0 MOV DL,AL

::10002458:: 7C E7 JL SHORT 10002441 \:JMPUP

::1000245A:: 5B POP EBX

::1000245B:: 8B0F MOV ECX,[EDI] \:BYJMP JmpBy:1000243E,

::1000245D:: 8BC5 MOV EAX,EBP

::1000245F:: 99 CDQ

::10002460:: 03C8 ADD ECX,EAX

::10002462:: 8B47 04 MOV EAX,[EDI+4]

::10002465:: 13C2 ADC EAX,EDX

::10002467:: 890F MOV [EDI],ECX

::10002469:: 8947 04 MOV [EDI+4],EAX

::1000246C:: 5F POP EDI

::1000246D:: 5E POP ESI

::1000246E:: 5D POP EBP

::1000246F:: C2 0C00 RETN C