Function at 0x45258c
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push ecx
mov ecx, 0x14
push 0
push 0
dec ecx
jne 0x452595
xchg dword [ebp - 4], ecx
push ebx
push esi
push edi
mov esi, ecx
mov dword [ebp - 8], edx
mov dword [ebp - 4], eax
mov eax, dword [ebp - 4]
call fcn.00406470
mov eax, dword [ebp - 8]
call fcn.00406470
mov eax, dword [ebp + 8]
call fcn.00408d88
xor eax, eax
push ebp
push 0x452c95
push dword fs:[eax]
mov dword fs:[eax], esp
xor ebx, ebx
cmp dword [ebp - 4], 0
jne 0x45275a
lea edx, [ebp - 0xc]
mov eax, dword [ebp + 8]
call fcn.00451f14
cmp byte [ebp + 0xc], 0
jne 0x45273c
mov eax, 0xfa
call fcn.00440294
test al, al
je 0x45260b
push 0
call sub.user32.dll_MessageBeep
jmp 0x452c44
push 0x7fffffff
mov ecx, 1
mov edx, dword [ebp - 0xc]
mov eax, 0x452cb4
call fcn.0041b0d4
test eax, eax
jle 0x45264f
lea edx, [ebp - 0x88]
mov eax, dword [ebp - 0xc]
call fcn.0043f058
mov edx, dword [ebp - 0x88]
lea eax, [ebp - 0xc]
call fcn.00405d8c
lea edx, [ebp - 0x10]
mov eax, dword [ebp - 0xc]
call fcn.0043ee58
jmp 0x45266d
lea eax, [ebp - 0x8c]
call fcn.00452450
mov edx, dword [ebp - 0x8c]
lea eax, [ebp - 0x10]
mov ecx, 0
call fcn.00406ea8
lea edx, [ebp - 0x90]
mov eax, dword [ebp - 0xc]
call fcn.0043eddc
mov edx, dword [ebp - 0x90]
lea eax, [ebp - 0xc]
call fcn.00405d8c
lea eax, [ebp - 0xc]
mov edx, 0x452cc4
call fcn.004060b8
lea eax, [ebp - 0xc]
xor ecx, ecx
mov edx, 0x105
call fcn.00406764
lea eax, [ebp - 0x84]
mov edx, 0x58
call fcn.0040ade0
mov dword [ebp - 0x84], 0x58
mov dword [ebp - 0x80], esi
mov eax, dword [ebp - 0x10]
call fcn.00406480
mov dword [ebp - 0x58], eax
mov eax, 0x452cc8
mov dword [ebp - 0x78], eax
mov dword [ebp - 0x6c], 1
mov eax, dword [ebp - 0xc]
call fcn.00406480
mov dword [ebp - 0x68], eax
mov dword [ebp - 0x64], 0x104
lea edx, [ebp - 0x14]
mov eax, dword [ebp + 8]
mov ecx, dword [eax]
call dword [ecx + 0x254]
mov eax, dword [ebp - 0x14]
call fcn.00406480
mov dword [ebp - 0x54], eax
mov eax, 0x452cd8
mov dword [ebp - 0x48], eax
mov dword [ebp - 0x50], 0x8004
lea eax, [ebp - 0x84]
push eax
call sub.comdlg32.dll_GetSaveFileNameA
test eax, eax
je 0x452c44
lea eax, [ebp - 0xc]
mov edx, dword [ebp - 0x68]
mov ecx, 0
call fcn.00405fa4
jmp 0x452765
lea edx, [ebp - 0x94]
mov eax, dword [ebp - 0xc]
call fcn.0043f058
mov edx, dword [ebp - 0x94]
lea eax, [ebp - 0xc]
call fcn.00405d8c
jmp 0x452765
lea eax, [ebp - 0xc]
mov edx, dword [ebp - 4]
call fcn.00405d8c
push ebp
mov eax, dword [ebp - 0xc]
call fcn.00452010
pop ecx
push 0
push 0
push 4
push 0
push 0
push 0xc0000000
mov eax, dword [ebp - 0xc]
call fcn.00406480
push eax
call sub.KERNEL32.DLL_CreateFileA
mov esi, eax
cmp esi, 0xffffffff
je 0x452c44
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1a8]
test al, al
je 0x452bcc
push 0
push esi
call sub.KERNEL32.DLL_GetFileSize_1
mov dword [ebp - 0x1c], eax
lea eax, [ebp - 0xc]
call fcn.00405cdc
cmp dword [ebp - 0x1c], 0
jbe 0x45287d
lea ecx, [ebp - 0xc]
mov edx, 0x452cec
mov eax, dword [ebp - 8]
call fcn.004520f4
lea eax, [ebp - 0xc]
xor edx, edx
call fcn.00405eec
call fcn.00406084
cmp eax, 0x1f
jne 0x452875
lea ecx, [ebp - 0x98]
mov edx, 0x452d08
mov eax, dword [ebp - 8]
call fcn.004520f4
cmp dword [ebp - 0x98], 0
je 0x452825
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1b8]
mov ebx, eax
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1c8]
jmp 0x45283d
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1c0]
mov ebx, eax
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1d0]
test bl, bl
jne 0x45284b
lea eax, [ebp - 0xc]
call fcn.00405cdc
jmp 0x45287d
sub al, 1
jb 0x452853
je 0x452864
jmp 0x45287d
lea eax, [ebp - 0xc]
xor ecx, ecx
mov edx, 9
call fcn.00406764
jmp 0x45287d
lea eax, [ebp - 0xc]
xor ecx, ecx
mov edx, 0x14
call fcn.00406764
jmp 0x45287d
lea eax, [ebp - 0xc]
call fcn.00405cdc
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1b0]
test eax, eax
jbe 0x45289c
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1b0]
cmp eax, dword [ebp - 0x1c]
jb 0x4528a0
xor ebx, ebx
jmp 0x4528a2
mov bl, 1
test bl, bl
jne 0x4528b0
cmp dword [ebp - 0xc], 0
je 0x452bbe
push 0
push 0
push 0
push 4
push 0
push esi
call sub.KERNEL32.DLL_CreateFileMappingW
mov dword [ebp - 0x28], eax
cmp dword [ebp - 0x28], 0
je 0x452bbe
push 0
push 0
push 0
push 0xf001f
mov eax, dword [ebp - 0x28]
push eax
call sub.KERNEL32.DLL_MapViewOfFile
mov dword [ebp - 0x2c], eax
cmp dword [ebp - 0x2c], 0
je 0x452bb5
cmp dword [ebp - 0xc], 0
je 0x452b33
mov edi, dword [ebp - 0x1c]
mov eax, dword [ebp - 0x1c]
push eax
push 0
dec edi
push edi
push 0
lea eax, [ebp - 0xc]
xor edx, edx
call fcn.00405eec
call fcn.00406084
add eax, 2
push eax
lea eax, [ebp - 0x9c]
mov ecx, dword [ebp - 0xc]
mov edx, 0x452d24
call fcn.00406180
mov eax, dword [ebp - 0x9c]
call fcn.00406480
mov edx, dword [ebp - 0x2c]
pop ecx
call fcn.0041b2c4
mov edi, eax
test edi, edi
jl 0x452b2a
mov eax, dword [ebp - 0x1c]
push eax
push 0
push edi
push 0
mov eax, 0x452d28
mov ecx, 0xb
mov edx, dword [ebp - 0x2c]
call fcn.0041b2c4
mov dword [ebp - 0x20], eax
cmp dword [ebp - 0x20], 0
jge 0x45298e
mov eax, dword [ebp - 0x1c]
push eax
push 0
push 0
push 0
mov eax, 0x452d34
mov ecx, 9
mov edx, dword [ebp - 0x2c]
call fcn.0041b2c4
mov dword [ebp - 0x20], eax
jmp 0x452992
add dword [ebp - 0x20], 2
cmp dword [ebp - 0x20], 0
jl 0x452b2a
mov eax, dword [ebp - 0x1c]
push eax
push 0
push edi
push 0x7fffffff
mov eax, 0x452d28
mov ecx, 0xb
mov edx, dword [ebp - 0x2c]
call fcn.0041b2c4
mov dword [ebp - 0x24], eax
cmp dword [ebp - 0x24], 0
jge 0x4529cb
mov eax, dword [ebp - 0x1c]
mov dword [ebp - 0x24], eax
jmp 0x4529cf
add dword [ebp - 0x24], 2
push 0
mov ecx, dword [ebp - 0x24]
sub ecx, dword [ebp - 0x20]
mov edx, dword [ebp - 0x2c]
add edx, dword [ebp - 0x20]
lea eax, [ebp - 0x10]
call fcn.00405e14
mov ecx, 0x452d4c
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
mov ecx, 0x452d64
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
mov ecx, 0x452d08
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
mov ecx, 0x452d80
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
lea ecx, [ebp - 0xa0]
mov edx, 0x452d80
mov eax, dword [ebp - 0x10]
call fcn.004520f4
cmp dword [ebp - 0xa0], 0
jne 0x452a91
mov ecx, 0x452d94
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
mov ecx, 0x452db0
mov edx, dword [ebp - 8]
mov eax, dword [ebp - 0x10]
call fcn.004523bc
test al, al
je 0x452b2a
lea ecx, [ebp - 0xc]
mov edx, 0x452dd0
mov eax, dword [ebp - 0x10]
call fcn.004520f4
cmp dword [ebp - 0xc], 0
je 0x452acd
lea eax, [ebp - 0xc]
xor edx, edx
call fcn.00405eec
call fcn.00406084
push eax
mov eax, dword [ebp - 0xc]
call fcn.00406480
mov edx, eax
xor eax, eax
pop ecx
call fcn.0041c750
mov edi, eax
jmp 0x452ad2
mov edi, 1
lea eax, [ebp - 0xa4]
push eax
lea eax, [edi + 1]
mov cl, 0x30
mov edx, 1
call fcn.0041c3f4
mov eax, dword [ebp - 0xa4]
push eax
lea eax, [ebp - 8]
mov ecx, 0x452cec
mov edx, 0x452dd0
call fcn.00452240
mov eax, dword [ebp - 0x24]
cmp eax, dword [ebp - 0x1c]
jae 0x452b1f
mov ecx, dword [ebp - 0x1c]
sub ecx, eax
mov edx, dword [ebp - 0x2c]
add edx, dword [ebp - 0x20]
mov eax, dword [ebp - 0x2c]
add eax, dword [ebp - 0x24]
call fcn.00403278
mov eax, dword [ebp - 0x24]
sub eax, dword [ebp - 0x20]
sub dword [ebp - 0x1c], eax
jmp 0x452b33
cmp edi, 0xffffffff
jne 0x4528fb
test bl, bl
je 0x452bac
push 0
push 0
push 0
push esi
call sub.KERNEL32.DLL_SetFilePointer_1
xor edi, edi
mov eax, dword [ebp - 0x1c]
push eax
push 0
inc edi
push edi
push 0x7fffffff
mov eax, 0x452d28
mov ecx, 0xb
mov edx, dword [ebp - 0x2c]
call fcn.0041b2c4
mov edi, eax
cmp edi, 0xffffffff
je 0x452b91
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1b0]
mov ebx, eax
mov eax, dword [ebp + 8]
mov edx, dword [eax]
call dword [edx + 0x1b0]
shr eax, 2
sub ebx, eax
mov eax, dword [ebp - 0x1c]
sub eax, edi
cmp ebx, eax
jbe 0x452b45
cmp edi, 0xffffffff
je 0x452bac
add edi, 2
sub dword [ebp - 0x1c], edi
mov edx, dword [ebp - 0x2c]
mov eax, dword [ebp - 0x2c]
add eax, edi
mov ecx, dword [ebp - 0x1c]
call fcn.00403278
mov eax, dword [ebp - 0x2c]
push eax
call sub.KERNEL32.DLL_UnmapViewOfFile
mov eax, dword [ebp - 0x28]
push eax
call sub.KERNEL32.DLL_CloseHandle_1
push 0
push 0
mov eax, dword [ebp - 0x1c]
push eax
push esi
call sub.KERNEL32.DLL_SetFilePointer_1
push dword [ebp - 8]
push 0x452de4
push 0x452de4
lea eax, [ebp - 8]
mov edx, 3
call fcn.00406270
push 0
lea eax, [ebp - 0x1c]
push eax
lea eax, [ebp - 8]
xor edx, edx
call fcn.00405eec
call fcn.00406084
push eax
mov eax, dword [ebp - 8]
push eax
push esi
call sub.KERNEL32.DLL_WriteFile_1
push esi
call sub.KERNEL32.DLL_SetEndOfFile_1
push esi
call sub.KERNEL32.DLL_CloseHandle_1
cmp dword [ebp - 4], 0
sete al
and al, byte [ebp + 0xc]
je 0x452c42
lea eax, [ebp - 0x18]
call fcn.00408d14
push eax
push 0x452de8
mov eax, dword [ebp + 8]
push eax
mov eax, dword [eax]
call dword [eax]
test eax, eax
jne 0x452c42
mov dl, 1
mov eax, dword [ebp - 0x18]
mov ecx, dword [eax]
call dword [ecx + 0x24]
mov bl, 1
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x452c9c
lea eax, [ebp - 0xa4]
mov edx, 6
call fcn.00405d00
lea eax, [ebp - 0x8c]
call fcn.00406c54
lea eax, [ebp - 0x88]
call fcn.00405cdc
lea eax, [ebp - 0x18]
call fcn.00408d14
lea eax, [ebp - 0x14]
mov edx, 5
call fcn.00405d00
lea eax, [ebp + 8]
call fcn.00408d14
ret