Hi all!
Can anyone help me with this portions of code to explain whiat this code do?
The code:

.text:00010A4D Sub_001 proc near ;
.text:00010A4D
.text:00010A4D var_4 = dword ptr -4
.text:00010A4D arg_0 = dword ptr 8
.text:00010A4D
.text:00010A4D push ebp
.text:00010A4E mov ebp, esp
.text:00010A50 push ecx
.text:00010A51 sub edx, 10h
.text:00010A54 push ebx
.text:00010A55 neg edx
.text:00010A57 push esi
.text:00010A58 mov esi, ecx
.text:00010A5A sbb edx, edx
.text:00010A5C lea eax, [esi+8]
.text:00010A5F not edx
.text:00010A61 and edx, eax
.text:00010A63 cmp byte_15B72, 0
.text:00010A6A mov eax, [esi+4]
.text:00010A6D push edi
.text:00010A6E mov ebx, edx
.text:00010A70 mov [ebp+var_4], eax
.text:00010A73 mov edi, eax
.text:00010A75 lea ecx, [ebp+var_4]
.text:00010A78 jnz loc_10B26
.text:00010A7E mov edx, [ebp+arg_0]
.text:00010A81 add edx, 238h
.text:00010A87 call sub_10837
.text:00010A8C test ebx, ebx
.text:00010A8E mov eax, [ebp+var_4]
.text:00010A91 jz short loc_10A95
.text:00010A93 mov [ebx], eax
.text:00010A95
.text:00010A95 loc_10A95: ; CODE XREF: Sub_001+44j
.text:00010A95 ; Sub_001+E8j
.text:00010A95 mov ecx, [esi]
.text:00010A97 xor ecx, eax
.text:00010A99 mov [esi+4], ecx
.text:00010A9C mov [esi], edi
.text:00010A9E xor ecx, ecx
.text:00010AA0
.text:00010AA0 loc_10AA0: ; CODE XREF: Sub_001+76j
.text:00010AA0 ; Sub_001+11Ej
.text:00010AA0 mov eax, dword_1597A
.text:00010AA5 mov edx, [esi+4]
.text:00010AA8 xor eax, 25807724h
.text:00010AAD ror eax, 7
.text:00010AB0 xor eax, edx
.text:00010AB2 rol eax, cl
.text:00010AB4 xor eax, [esi]
.text:00010AB6 inc ecx
.text:00010AB7 inc ecx
.text:00010AB8 cmp ecx, 0Ch
.text:00010ABB mov [ebp+var_4], eax
.text:00010ABE mov [esi+4], eax
.text:00010AC1 mov [esi], edx
.text:00010AC3 jb short loc_10AA0
.text:00010AC5 cmp byte_15B72, 0
.text:00010ACC mov edi, eax
.text:00010ACE lea ecx, [ebp+var_4]
.text:00010AD1 jnz loc_10BA0
.text:00010AD7 mov edx, [ebp+arg_0]
.text:00010ADA add edx, 238h
.text:00010AE0 call sub_10837
.text:00010AE5 test ebx, ebx
.text:00010AE7 mov eax, [ebp+var_4]
.text:00010AEA jz short loc_10AEF
.text:00010AEC mov [ebx+4], eax
.text:00010AEF
.text:00010AEF loc_10AEF: ; CODE XREF: Sub_001+9Dj
.text:00010AEF ; Sub_001+145j ...
.text:00010AEF mov ecx, [esi]
.text:00010AF1 xor ecx, eax
.text:00010AF3 mov [esi+4], ecx
.text:00010AF6 mov [esi], edi
.text:00010AF8 xor ecx, ecx
.text:00010AFA
.text:00010AFA loc_10AFA: ; CODE XREF: Sub_001+D0j
.text:00010AFA mov edx, dword_1597E
.text:00010B00 mov eax, [esi+4]
.text:00010B03 xor edx, 36459714h
.text:00010B09 rol edx, 9
.text:00010B0C xor edx, eax
.text:00010B0E rol edx, cl
.text:00010B10 add ecx, 5
.text:00010B13 xor edx, [esi]
.text:00010B15 cmp ecx, 1Eh
.text:00010B18 mov [esi+4], edx
.text:00010B1B mov [esi], eax
.text:00010B1D jb short loc_10AFA
.text:00010B1F pop edi
.text:00010B20 pop esi
.text:00010B21 pop ebx
.text:00010B22 leave
.text:00010B23 retn 4
.text:00010B26 ; ---------------------------------------------------------------------------
.text:00010B26
.text:00010B26 loc_10B26: ; CODE XREF: Sub_001+2Bj
.text:00010B26 mov edx, offset unk_1598A
.text:00010B2B call sub_10837
.text:00010B30 test ebx, ebx
.text:00010B32 mov eax, [ebp+var_4]
.text:00010B35 jz loc_10A95
.text:00010B3B mov [ebx], eax
.text:00010B3D mov ecx, [esi]
.text:00010B3F xor ecx, eax
.text:00010B41 mov [esi+4], ecx
.text:00010B44 mov [esi], edi
.text:00010B46 xor ecx, ecx
.text:00010B48 mov eax, dword_1597A
.text:00010B4D mov edx, [esi+4]
.text:00010B50 xor eax, 25807724h
.text:00010B55 ror eax, 7
.text:00010B58 xor eax, edx
.text:00010B5A rol eax, cl
.text:00010B5C xor eax, [esi]
.text:00010B5E inc ecx
.text:00010B5F inc ecx
.text:00010B60 cmp ecx, 0Ch
.text:00010B63 mov [ebp+var_4], eax
.text:00010B66 mov [esi+4], eax
.text:00010B69 mov [esi], edx
.text:00010B6B jb loc_10AA0
.text:00010B71 cmp byte_15B72, 0
.text:00010B78 mov edi, eax
.text:00010B7A lea ecx, [ebp+var_4]
.text:00010B7D jnz short loc_10BA0
.text:00010B7F mov edx, [ebp+arg_0]
.text:00010B82 add edx, 238h
.text:00010B88 call sub_10837
.text:00010B8D test ebx, ebx
.text:00010B8F mov eax, [ebp+var_4]
.text:00010B92 jz loc_10AEF
.text:00010B98 mov [ebx+4], eax
.text:00010B9B jmp loc_10AEF
.text:00010BA0 ; ---------------------------------------------------------------------------
.text:00010BA0
.text:00010BA0 loc_10BA0: ; CODE XREF: Sub_001+84j
.text:00010BA0 ; Sub_001+130j
.text:00010BA0 mov edx, offset unk_1598A
.text:00010BA5 call sub_10837
.text:00010BAA test ebx, ebx
.text:00010BAC mov eax, [ebp+var_4]
.text:00010BAF jz loc_10AEF
.text:00010BB5 mov [ebx+4], eax
.text:00010BB8 jmp loc_10AEF
.text:00010BB8 Sub_001 endp

Thanks!

No.

Don't post large chunks of random uncommented code here like that, and especially not without any kind of explanation...

how can you expect us to give you a perfect explanation without posting all of the code for sub_10837 too?

Alright, let's not encourage him to do so.

Regards,

The code is producing a hash of the double word passed in [EBP+04] and storing it at [ESI+4]

That is crystal clear!

You are always too nice Naides...

"Nobody" is Nice. (Bad pun intended)

Regards,

Sorry to all!

It's main part of Glasha's Hasp Emu 3c/3d hasp algorhytm. (3c)

And nadies (nobody) told you what the code is doing, although you shouldn't have asked in that way. But as long as you understand that posting long sections of code is not the right way to do thing, that's all we really wanted you to learn.

The rest was just having a little fun.

Regards,

souz, don't believe a single word nobody tells you.
He is full of shit.
The only person here qualified to read minds is Delta.
I have plenty of threads to prove it. Do you want a list?

Regards,

Hehe, nobody is funny too.

Now dELTA, what you should have responded to that post was:

I knew you were going to say that.

Regards,