Function at 0x450be8
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push ecx
mov ecx, 0x19
push 0
push 0
dec ecx
jne 0x450bf1
xchg dword [ebp - 4], ecx
push ebx
push esi
push edi
mov ebx, ecx
mov dword [ebp - 4], edx
mov dword [ebp - 0x24], eax
mov esi, dword [ebp + 8]
mov eax, dword [ebp - 4]
call fcn.004066c0
xor eax, eax
push ebp
push 0x4515bc
push dword fs:[eax]
mov dword fs:[eax], esp
mov byte [ebp - 0x25], 0
cmp dword [ebp - 4], 0
je 0x45151a
cmp dword [ebp - 0x24], 0
jne 0x450e55
lea edx, [ebp - 8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
cmp byte [ebp + 0xc], 0
jne 0x450e37
mov eax, 0xfa
call fcn.00436478
test al, al
je 0x450c68
push 0
call sub.user32.dll_MessageBeep
jmp 0x45151a
push 0x7fffffff
mov edi, dword [0x557100]
mov edi, dword [edi]
mov ecx, 1
mov edx, dword [ebp - 8]
mov eax, 0x4515e0
call edi
test eax, eax
jle 0x450cb1
lea edx, [ebp - 0x94]
mov eax, dword [ebp - 8]
call fcn.00434638
mov edx, dword [ebp - 0x94]
lea eax, [ebp - 8]
call fcn.0040672c
lea edx, [ebp - 0xc]
mov eax, dword [ebp - 8]
call fcn.0040ec0c
jmp 0x450cc0
lea ecx, [ebp - 0xc]
mov dl, 1
mov eax, 0x10
call fcn.00436bbc
lea edx, [ebp - 0x98]
mov eax, dword [ebp - 8]
call fcn.0040ebcc
mov edx, dword [ebp - 0x98]
lea eax, [ebp - 8]
call fcn.0040672c
lea eax, [ebp - 8]
mov edx, 0x4515f0
call fcn.00406a2c
lea eax, [ebp - 8]
mov edx, 0x105
call fcn.00406994
lea edx, [ebp - 0x10]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x2ac]
lea eax, [ebp - 0x8d]
mov edx, 0x4c
call fcn.0040a41c
mov dword [ebp - 0x8d], 0x4c
mov dword [ebp - 0x89], ebx
mov dword [ebp - 0x75], 1
mov dword [ebp - 0x6d], 0x104
mov dword [ebp - 0x59], 0x8004
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x450d9c
mov eax, dword [ebp - 8]
call fcn.00406764
mov dword [ebp - 0x71], eax
mov eax, dword [ebp - 0xc]
call fcn.00406764
mov dword [ebp - 0x61], eax
mov eax, dword [ebp - 0x10]
call fcn.00406764
mov dword [ebp - 0x5d], eax
mov eax, 0x4515f4
mov dword [ebp - 0x81], eax
mov eax, 0x451610
mov dword [ebp - 0x51], eax
lea eax, [ebp - 0x8d]
push eax
call sub.comdlg32.dll_GetSaveFileNameW
test eax, eax
je 0x45151a
lea eax, [ebp - 8]
mov edx, dword [ebp - 0x71]
call fcn.00406884
jmp 0x450e60
lea eax, [ebp - 0x14]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.0040691c
lea eax, [ebp - 0x18]
mov edx, dword [ebp - 0xc]
mov ecx, 0
call fcn.0040691c
lea eax, [ebp - 0x1c]
mov edx, dword [ebp - 0x10]
mov ecx, 0
call fcn.0040691c
mov eax, dword [ebp - 0x14]
call fcn.00406040
mov dword [ebp - 0x71], eax
mov eax, dword [ebp - 0x18]
call fcn.00406040
mov dword [ebp - 0x61], eax
mov eax, dword [ebp - 0x1c]
call fcn.00406040
mov dword [ebp - 0x5d], eax
mov eax, 0x45161c
mov dword [ebp - 0x81], eax
mov eax, 0x45162c
mov dword [ebp - 0x51], eax
lea eax, [ebp - 0x8d]
push eax
call sub.comdlg32.dll_GetSaveFileNameA
test eax, eax
je 0x45151a
lea eax, [ebp - 0x9c]
mov edx, dword [ebp - 0x71]
mov ecx, 0
call fcn.00405c38
mov edx, dword [ebp - 0x9c]
lea eax, [ebp - 8]
call fcn.004068f4
jmp 0x450e60
lea edx, [ebp - 0xa0]
mov eax, dword [ebp - 8]
call fcn.00434638
mov edx, dword [ebp - 0xa0]
lea eax, [ebp - 8]
call fcn.0040672c
jmp 0x450e60
lea eax, [ebp - 8]
mov edx, dword [ebp - 0x24]
call fcn.0040672c
push ebp
mov eax, dword [ebp - 8]
call fcn.00450894
pop ecx
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x450e97
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
mov eax, dword [ebp - 8]
call fcn.00406764
push eax
call sub.kernel32.dll_CreateFileW_1
mov ebx, eax
jmp 0x450ecc
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
lea eax, [ebp - 0xa4]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.0040691c
mov eax, dword [ebp - 0xa4]
call fcn.00406040
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
jne 0x450ff8
push 0x7fffffff
lea edx, [ebp - 0xa8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
mov edx, dword [ebp - 0xa8]
mov edi, dword [0x557100]
mov edi, dword [edi]
mov ecx, 1
mov eax, 0x4515e0
call edi
test eax, eax
jne 0x450ff8
push 0x451640
lea edx, [ebp - 0xb4]
xor eax, eax
call fcn.00434544
mov eax, dword [ebp - 0xb4]
lea edx, [ebp - 0xb0]
call fcn.0040ebcc
mov eax, dword [ebp - 0xb0]
lea edx, [ebp - 0xac]
call fcn.004345f8
push dword [ebp - 0xac]
push 0x4515e0
lea edx, [ebp - 0xb8]
mov eax, esi
mov ecx, dword [eax]
call dword [ecx + 0x1f8]
push dword [ebp - 0xb8]
lea eax, [ebp - 8]
mov edx, 4
call fcn.00406b7c
push 0x45166c
push 0x451690
push 0x4516b4
lea edx, [ebp - 8]
mov ecx, 0x4516e0
xor eax, eax
call fcn.00436ef8
push ebp
mov eax, dword [ebp - 8]
call fcn.00450894
pop ecx
call sub.kernel32.dll_GetVersion_1
test eax, 0x80000000
jne 0x450fc3
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
mov eax, dword [ebp - 8]
call fcn.00406764
push eax
call sub.kernel32.dll_CreateFileW_1
mov ebx, eax
jmp 0x450ff8
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
lea eax, [ebp - 0xbc]
mov edx, dword [ebp - 8]
mov ecx, 0
call fcn.0040691c
mov eax, dword [ebp - 0xbc]
call fcn.00406040
push eax
call sub.kernel32.dll_CreateFileA
mov ebx, eax
cmp ebx, 0xffffffff
je 0x45151a
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x200]
test al, al
je 0x451493
push 0
push ebx
call sub.kernel32.dll_GetFileSize_1
mov dword [ebp - 0x2c], eax
lea eax, [ebp - 8]
xor edx, edx
call fcn.0040672c
cmp dword [ebp - 0x2c], 0
jbe 0x4510e6
lea ecx, [ebp - 8]
mov edx, 0x451708
mov eax, dword [ebp - 4]
call fcn.00450608
lea eax, [ebp - 8]
call fcn.00405b64
call fcn.00406988
cmp eax, 0x1f
jne 0x4510dc
lea ecx, [ebp - 0xc0]
mov edx, 0x451730
mov eax, dword [ebp - 4]
call fcn.00450608
cmp dword [ebp - 0xc0], 0
je 0x45108d
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x210]
mov byte [ebp - 0x41], al
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x220]
jmp 0x4510a4
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x218]
mov byte [ebp - 0x41], al
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x228]
cmp byte [ebp - 0x41], 0
jne 0x4510b6
lea eax, [ebp - 8]
xor edx, edx
call fcn.0040672c
jmp 0x4510e6
sub al, 1
jb 0x4510be
je 0x4510cd
jmp 0x4510e6
lea eax, [ebp - 8]
mov edx, 9
call fcn.00406994
jmp 0x4510e6
lea eax, [ebp - 8]
mov edx, 0x14
call fcn.00406994
jmp 0x4510e6
lea eax, [ebp - 8]
xor edx, edx
call fcn.0040672c
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
test eax, eax
jbe 0x451103
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
cmp eax, dword [ebp - 0x2c]
jb 0x451107
xor eax, eax
jmp 0x451109
mov al, 1
mov byte [ebp - 0x41], al
cmp byte [ebp - 0x41], 0
jne 0x45111c
cmp dword [ebp - 8], 0
je 0x451485
push 0
push 0
push 0
push 4
push 0
push ebx
call sub.kernel32.dll_CreateFileMappingW
mov dword [ebp - 0x3c], eax
cmp dword [ebp - 0x3c], 0
je 0x451485
push 0
push 0
push 0
push 0xf001f
mov eax, dword [ebp - 0x3c]
push eax
call sub.kernel32.dll_MapViewOfFile
mov dword [ebp - 0x40], eax
cmp dword [ebp - 0x40], 0
je 0x45147c
cmp dword [ebp - 8], 0
je 0x4513e2
lea edx, [ebp - 0x14]
mov eax, dword [ebp - 8]
call fcn.0040e8fc
mov eax, dword [ebp - 0x2c]
mov dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
dec eax
push eax
push 0
lea eax, [ebp - 0x14]
xor edx, edx
call fcn.00405b94
call fcn.00405d18
add eax, 2
push eax
lea eax, [ebp - 0xc4]
mov ecx, dword [ebp - 0x14]
mov edx, 0x45175c
call fcn.00405dc8
mov eax, dword [ebp - 0xc4]
call fcn.00406040
mov edi, dword [0x556f70]
mov edi, dword [edi]
mov edx, dword [ebp - 0x40]
pop ecx
call edi
mov dword [ebp - 0x30], eax
cmp dword [ebp - 0x30], 0
jl 0x4513d8
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
push eax
push 0
mov edi, dword [0x556f70]
mov edi, dword [edi]
mov eax, 0x451760
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x34], eax
cmp dword [ebp - 0x34], 0
jge 0x451220
mov eax, dword [ebp - 0x2c]
push eax
push 0
push 0
push 0
mov edi, dword [0x556f70]
mov edi, dword [edi]
mov eax, 0x45176c
mov ecx, 9
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x34], eax
jmp 0x451224
add dword [ebp - 0x34], 2
cmp dword [ebp - 0x34], 0
jl 0x4513d8
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
push eax
push 0x7fffffff
mov edi, dword [0x556f70]
mov edi, dword [edi]
mov eax, 0x451760
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x38], eax
cmp dword [ebp - 0x38], 0
jge 0x451265
mov eax, dword [ebp - 0x2c]
mov dword [ebp - 0x38], eax
jmp 0x451269
add dword [ebp - 0x38], 2
push 0
mov ecx, dword [ebp - 0x38]
sub ecx, dword [ebp - 0x34]
mov edx, dword [ebp - 0x40]
add edx, dword [ebp - 0x34]
lea eax, [ebp - 0x18]
call fcn.00405abc
lea edx, [ebp - 0xc]
mov eax, dword [ebp - 0x18]
call fcn.0040e66c
mov ecx, 0x451784
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
mov ecx, 0x4517a8
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
mov ecx, 0x451730
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
mov ecx, 0x4517d4
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
lea ecx, [ebp - 0xc8]
mov edx, 0x4517d4
mov eax, dword [ebp - 0xc]
call fcn.00450608
cmp dword [ebp - 0xc8], 0
jne 0x451336
mov ecx, 0x4517f0
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
mov ecx, 0x45181c
mov edx, dword [ebp - 4]
mov eax, dword [ebp - 0xc]
call fcn.00450b74
test al, al
je 0x4513d8
lea ecx, [ebp - 8]
mov edx, 0x45184c
mov eax, dword [ebp - 0xc]
call fcn.00450608
cmp dword [ebp - 8], 0
je 0x451376
lea eax, [ebp - 8]
call fcn.00405b64
call fcn.00406988
push eax
mov eax, dword [ebp - 8]
call fcn.00406764
mov edx, eax
mov edi, dword [0x557284]
mov edi, dword [edi]
xor eax, eax
pop ecx
call edi
mov dword [ebp - 0x30], eax
jmp 0x45137d
mov dword [ebp - 0x30], 1
lea eax, [ebp - 0xcc]
push eax
mov eax, dword [ebp - 0x30]
inc eax
mov cx, 0x30
mov edx, 1
call fcn.0040d384
mov eax, dword [ebp - 0xcc]
push eax
lea eax, [ebp - 4]
mov ecx, 0x451708
mov edx, 0x45184c
call fcn.004509f8
mov eax, dword [ebp - 0x38]
cmp eax, dword [ebp - 0x2c]
jae 0x4513cd
mov ecx, dword [ebp - 0x2c]
sub ecx, eax
mov edx, dword [ebp - 0x40]
add edx, dword [ebp - 0x34]
mov eax, dword [ebp - 0x40]
add eax, dword [ebp - 0x38]
call fcn.0040323c
mov eax, dword [ebp - 0x38]
sub eax, dword [ebp - 0x34]
sub dword [ebp - 0x2c], eax
jmp 0x4513e2
cmp dword [ebp - 0x30], 0xffffffff
jne 0x451175
cmp byte [ebp - 0x41], 0
je 0x451473
push 0
push 0
push 0
push ebx
call sub.kernel32.dll_SetFilePointer_1
xor eax, eax
mov dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x2c]
push eax
push 0
mov eax, dword [ebp - 0x30]
inc eax
push eax
push 0x7fffffff
mov edi, dword [0x556f70]
mov edi, dword [edi]
mov eax, 0x451760
mov ecx, 0xb
mov edx, dword [ebp - 0x40]
call edi
mov dword [ebp - 0x30], eax
cmp dword [ebp - 0x30], 0xffffffff
je 0x451452
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
mov edi, eax
mov eax, esi
mov edx, dword [eax]
call dword [edx + 0x208]
shr eax, 2
sub edi, eax
mov eax, dword [ebp - 0x2c]
sub eax, dword [ebp - 0x30]
cmp edi, eax
jbe 0x4513fd
cmp dword [ebp - 0x30], 0xffffffff
je 0x451473
add dword [ebp - 0x30], 2
mov eax, dword [ebp - 0x30]
sub dword [ebp - 0x2c], eax
mov edx, dword [ebp - 0x40]
mov eax, dword [ebp - 0x40]
add eax, dword [ebp - 0x30]
mov ecx, dword [ebp - 0x2c]
call fcn.0040323c
mov eax, dword [ebp - 0x40]
push eax
call sub.kernel32.dll_UnmapViewOfFile
mov eax, dword [ebp - 0x3c]
push eax
call sub.kernel32.dll_CloseHandle_1
push 0
push 0
mov eax, dword [ebp - 0x2c]
push eax
push ebx
call sub.kernel32.dll_SetFilePointer_1
push dword [ebp - 4]
push 0x451864
push 0x451864
lea eax, [ebp - 4]
mov edx, 3
call fcn.00406b7c
lea edx, [ebp - 0x14]
mov eax, dword [ebp - 4]
call fcn.0040e8fc
push 0
lea eax, [ebp - 0x2c]
push eax
lea eax, [ebp - 0x14]
xor edx, edx
call fcn.00405b94
call fcn.00405d18
push eax
mov eax, dword [ebp - 0x14]
push eax
push ebx
call sub.kernel32.dll_WriteFile_1
cmp eax, 1
sbb eax, eax
inc eax
mov byte [ebp - 0x25], al
push ebx
call sub.kernel32.dll_SetEndOfFile_1
push ebx
call sub.kernel32.dll_CloseHandle_1
cmp dword [ebp - 0x24], 0
sete al
and al, byte [ebp + 0xc]
je 0x45151a
lea eax, [ebp - 0x20]
call fcn.004087a4
push eax
push 0x45186c
push esi
mov eax, dword [esi]
call dword [eax]
test eax, eax
jne 0x45151a
mov dl, 1
mov eax, dword [ebp - 0x20]
mov ecx, dword [eax]
call dword [ecx + 0x24]
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x4515c6
lea eax, [ebp - 0xcc]
mov edx, 2
call fcn.004066d0
lea eax, [ebp - 0xc4]
call fcn.00405984
lea eax, [ebp - 0xc0]
call fcn.004066c8
lea eax, [ebp - 0xbc]
call fcn.00405984
lea eax, [ebp - 0xb8]
mov edx, 5
call fcn.004066d0
lea eax, [ebp - 0xa4]
call fcn.00405984
lea eax, [ebp - 0xa0]
call fcn.004066c8
lea eax, [ebp - 0x9c]
call fcn.00405984
lea eax, [ebp - 0x98]
mov edx, 2
call fcn.004066d0
lea eax, [ebp - 0x20]
call fcn.004087a4
lea eax, [ebp - 0x1c]
mov edx, 3
call fcn.004059a8
lea eax, [ebp - 0x10]
mov edx, 4
call fcn.004066d0
ret