Function at 0x457b10
Capabilities:
Get file size
Read file on windows

Disassembly:
sub esp, 0x24
push ebx
push ebp
mov ebp, dword [esp + 0x38]
push esi
lea ebx, [eax + 0xccc]
mov eax, dword [eax]
push ebp
push eax
mov dword [esp + 0x24], ebx
mov dword [esp + 0x20], eax
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
xor edx, edx
test eax, eax
jne 0x457b58
push str.GetFileSizeEx__
push 0x11e
push str..QHImageHlp.c
call fcn.0045a7b0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
mov esi, dword [esp + 0x34]
xor ecx, ecx
add esi, 8
mov dword [esp + 0x28], ecx
mov dword [esp + 0x2c], edx
mov dword [esp + 0xc], edx
mov dword [esp + 0x14], esi
mov eax, dword [esp + 0xc]
cmp eax, dword [esp + 0x38]
jne 0x457b85
mov eax, dword [ebp]
sub eax, ecx
mov ecx, dword [ebp + 4]
jmp 0x457b8d
mov eax, dword [esi - 8]
sub eax, ecx
mov ecx, dword [esi - 4]
sbb ecx, edx
mov edx, eax
shrd edx, ecx, 0xf
shr ecx, 0xf
and eax, 0x7fff
mov dword [esp + 0x10], edx
mov ebp, eax
jne 0x457bac
mov ebp, 0x8000
jmp 0x457bb1
inc edx
mov dword [esp + 0x10], edx
test edx, edx
jbe 0x457c61
mov ecx, dword [esp + 0x2c]
mov edx, dword [esp + 0x28]
mov eax, dword [esp + 0x18]
push 0
push 0
push ecx
push edx
push eax
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
je 0x457cec
mov edx, dword [esp + 0x18]
push 0
lea ecx, [esp + 0x24]
push ecx
push ebp
push ebx
push edx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x457d0e
cmp ebp, dword [esp + 0x20]
jne 0x457d30
mov eax, fcn.00456290
test eax, eax
je 0x457c48
mov esi, dword [edi + 0x20]
and esi, 0x3f
mov eax, ebp
test ebp, ebp
jbe 0x457c40
mov cl, byte [ebx]
mov byte [edi + esi + 0x28], cl
inc esi
inc ebx
add dword [edi + 0x20], 1
adc dword [edi + 0x24], 0
dec eax
mov dword [esp + 0x24], eax
cmp esi, 0x40
jne 0x457c3c
mov edx, edi
xor esi, esi
call fcn.004593c0
mov eax, dword [esp + 0x24]
test eax, eax
ja 0x457c15
mov esi, dword [esp + 0x14]
mov ebx, dword [esp + 0x1c]
add dword [esp + 0x28], ebp
mov ebp, 0x8000
adc dword [esp + 0x2c], 0
sub dword [esp + 0x10], 1
jne 0x457bb9
mov edx, dword [esp + 0xc]
cmp edx, dword [esp + 0x38]
jae 0x457cc1
mov eax, dword [esi]
test eax, eax
je 0x457d9f
mov ecx, fcn.00456290
test ecx, ecx
je 0x457cad
cmp dword [esi + 4], 0
je 0x457cad
cmp eax, 0x8000
ja 0x457d55
push eax
push 0
push ebx
call fcn.00497680
mov edx, dword [esi]
add esp, 0xc
push edx
push ebx
push edi
call fcn.00456290
test eax, eax
je 0x457d7a
mov eax, dword [esi]
xor ecx, ecx
add eax, dword [esi - 8]
mov dword [esp + 0x28], eax
mov eax, dword [esi - 4]
adc eax, ecx
mov dword [esp + 0x2c], eax
mov eax, dword [esp + 0xc]
inc eax
add esi, 0x18
mov dword [esp + 0xc], eax
mov dword [esp + 0x14], esi
cmp eax, dword [esp + 0x38]
ja 0x457d9f
mov ebp, dword [esp + 0x3c]
mov edx, dword [esp + 0x2c]
mov ecx, dword [esp + 0x28]
jmp 0x457b71
push str.SetFilePointerEx__
push 0xf9
push str..QHImageHlp.c
xor edx, edx
call fcn.0045a7b0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
push str.ReadFile__
push 0xfc
push str..QHImageHlp.c
xor edx, edx
call fcn.0045a7b0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
push 0x4dc584
push 0xfe
mov edx, 1
push str..QHImageHlp.c
call fcn.0045a8e0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
push 0x4dc654
push 0x3d8
mov edx, 8
push str..QHImageHlp.c
call fcn.0045a8e0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
push str._rT
push 0x3db
mov edx, 0x11
push str..QHImageHlp.c
call fcn.0045a8e0
add esp, 0xc
xor eax, eax
pop esi
pop ebp
pop ebx
add esp, 0x24
ret
pop esi
pop ebp
mov eax, 1
pop ebx
add esp, 0x24
ret