Function at 0x41bf40
Capabilities:
Get file size
Read file on windows

Disassembly:
sub esp, 0x18
mov ecx, dword [esp + 0x34]
push ebx
push ebp
push esi
push edi
lea ebp, [eax + 0xccc]
mov eax, dword [eax]
push ecx
push eax
mov dword [esp + 0x24], eax
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x41bf86
push str.GetFileSizeEx__
push 0x11e
push str..QHImageHlp.c
xor edx, edx
call fcn.00420230
add esp, 0xc
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
mov ecx, dword [esp + 0x2c]
xor eax, eax
add ecx, 8
xor edi, edi
xor ebx, ebx
cmp eax, dword [esp + 0x30]
mov dword [esp + 0x20], eax
mov dword [esp + 0x14], ecx
jne 0x41bfae
mov edx, dword [esp + 0x44]
mov esi, dword [edx]
mov eax, edx
mov eax, dword [eax + 4]
jmp 0x41bfb4
mov esi, dword [ecx - 8]
mov eax, dword [ecx - 4]
sub esi, edi
sbb eax, ebx
mov edx, esi
shrd edx, eax, 0xf
shr eax, 0xf
and esi, 0x7fff
mov dword [esp + 0x18], edx
jne 0x41bfd4
mov esi, 0x8000
jmp 0x41bfd9
inc edx
mov dword [esp + 0x18], edx
test edx, edx
jbe 0x41c06b
mov ecx, dword [esp + 0x1c]
push 0
push 0
push ebx
push edi
push ecx
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
je 0x41c14b
mov eax, dword [esp + 0x1c]
push 0
lea edx, [esp + 0x28]
push edx
push esi
push ebp
push eax
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x41c16e
cmp esi, dword [esp + 0x24]
jne 0x41c191
mov eax, dword [esp + 0x34]
test eax, eax
je 0x41c039
mov ecx, dword [esp + 0x38]
push esi
push ebp
push ecx
call eax
test eax, eax
je 0x41c1b7
mov eax, dword [esp + 0x3c]
test eax, eax
je 0x41c052
mov edx, dword [esp + 0x40]
push esi
push ebp
push edx
call eax
test eax, eax
je 0x41c1c3
add edi, esi
adc ebx, 0
sub dword [esp + 0x18], 1
mov esi, 0x8000
jne 0x41bfe1
mov ecx, dword [esp + 0x14]
mov eax, dword [esp + 0x20]
cmp eax, dword [esp + 0x30]
jae 0x41c128
mov esi, dword [ecx]
test esi, esi
je 0x41c13e
cmp dword [ecx + 8], 0
jne 0x41c0d6
push 0
push 0
push ebx
push edi
mov edi, dword [esp + 0x2c]
push edi
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
je 0x41c14b
mov ecx, ebp
mov edx, edi
call fcn.0041af40
test eax, eax
je 0x41c21d
mov eax, dword [esp + 0x3c]
test eax, eax
je 0x41c0d2
mov ecx, dword [esp + 0x14]
mov edx, dword [ecx]
mov ecx, dword [esp + 0x40]
push edx
push ebp
push ecx
call eax
test eax, eax
je 0x41c1cf
mov ecx, dword [esp + 0x14]
mov esi, dword [esp + 0x34]
test esi, esi
je 0x41c118
cmp dword [ecx + 4], 0
je 0x41c118
mov eax, dword [ecx]
cmp eax, 0x8000
ja 0x41c1db
push eax
push 0
push ebp
call fcn.00487420
mov edx, dword [esp + 0x20]
mov eax, dword [edx]
mov ecx, dword [esp + 0x44]
add esp, 0xc
push eax
push ebp
push ecx
call esi
test eax, eax
je 0x41c201
mov ecx, dword [esp + 0x14]
mov edi, dword [ecx]
mov ebx, dword [ecx - 4]
mov eax, dword [esp + 0x20]
xor edx, edx
add edi, dword [ecx - 8]
adc ebx, edx
inc eax
add ecx, 0x18
mov dword [esp + 0x20], eax
mov dword [esp + 0x14], ecx
cmp eax, dword [esp + 0x30]
jbe 0x41bf9f
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
push str.SetFilePointerEx__
push 0xf9
push str..QHImageHlp.c
xor edx, edx
call fcn.00420230
add esp, 0xc
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
push str.ReadFile__
push 0xfc
push str..QHImageHlp.c
xor edx, edx
call fcn.00420230
add esp, 0xc
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
push 0x4c968c
push 0xfe
mov edx, 1
push str..QHImageHlp.c
call fcn.00420630
add esp, 0xc
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
push str._rT
push 0x374
jmp 0x41c20b
push str._rT
push 0x379
jmp 0x41c20b
push str._rT
push 0x38b
jmp 0x41c20b
push 0x4c97c8
push 0x392
mov edx, 8
push str..QHImageHlp.c
call fcn.00420630
add esp, 0xc
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x18
ret
push str._rT
push 0x395
mov edx, 0x11
push str..QHImageHlp.c
call fcn.00420630
add esp, 0xc
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x18
ret