Function at 0x4056d6
Capabilities:
Get file size
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0xc
push esi
push edi
xor edi, edi
mov dword [ebp - 0xc], edi
mov dword [ebp - 8], edi
cmp dword [ebp + 0xc], edi
jne 0x405707
mov eax, 0x80070057
push eax
push 0x33f
push str.fileutil.cpp
mov esi, eax
call fcn.00403a8b
jmp 0x405987
mov eax, dword [ebp + 8]
test eax, eax
jne 0x40571b
mov eax, 0x80070057
push eax
push 0x340
jmp 0x4056f6
mov eax, dword [ebp + 0x10]
test eax, eax
jne 0x40572f
mov eax, 0x80070057
push eax
push 0x341
jmp 0x4056f6
xor ecx, ecx
cmp cx, word [eax]
jne 0x405743
mov eax, 0x80070057
push eax
push 0x342
jmp 0x4056f6
push ebx
push edi
push 0x8000080
push 3
push edi
push 5
push SysReAllocString
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov ebx, dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
mov dword [ebp - 4], esi
cmp esi, 0xffffffff
jne 0x4057b1
call ebx
mov ecx, eax
mov esi, 0x80070002
movzx eax, cx
or eax, 0x80070000
test ecx, ecx
cmovle eax, ecx
cmp eax, esi
je 0x405986
test ecx, ecx
je 0x4057ae
mov esi, eax
mov eax, 0x80004005
test esi, esi
cmovns esi, eax
push esi
push 0x34c
push str.fileutil.cpp
call fcn.00403a8b
jmp 0x405986
mov esi, dword [ebp - 4]
lea eax, [ebp - 0xc]
push eax
push esi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x4057ef
call ebx
movzx esi, ax
or esi, 0x80070000
test eax, eax
cmovle esi, eax
mov eax, 0x80004005
test esi, esi
cmovns esi, eax
push esi
push 0x351
push str.fileutil.cpp
call fcn.00403a8b
jmp 0x405977
cmp dword [ebp + 0x14], edi
je 0x40583b
mov edi, dword [ebp + 0x18]
xor eax, eax
cmp eax, dword [ebp - 8]
jl 0x40580f
jg 0x405805
cmp edi, dword [ebp - 0xc]
jbe 0x40580f
mov esi, 0x80070057
jmp 0x405977
push 1
push eax
push edi
push esi
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
cmp eax, 0xffffffff
jne 0x40583b
call ebx
movzx esi, ax
or esi, 0x80070000
test eax, eax
cmovle esi, eax
test esi, esi
jns 0x40583b
push esi
push 0x35f
jmp 0x4057e0
cmp dword [ebp + 0x20], 0
je 0x405867
mov ebx, dword [ebp + 0x1c]
xor edi, edi
mov esi, dword [ebp + 8]
cmp dword [esi], 0
je 0x4058b5
test ebx, ebx
jne 0x405893
push dword [esi]
call fcn.00403c7f
mov dword [esi], edi
mov eax, dword [ebp + 0xc]
mov esi, edi
mov dword [eax], edi
jmp 0x405977
mov ecx, dword [ebp - 0xc]
mov ebx, ecx
mov eax, dword [ebp - 8]
sub ebx, edi
sub ecx, edi
push 0
pop edi
sbb eax, edi
cmp edi, eax
jg 0x405846
jl 0x405883
cmp dword [ebp + 0x1c], ecx
jae 0x405846
mov esi, 0x8007007a
push esi
push 0x371
jmp 0x4057e0
push 1
push ebx
push dword [esi]
call fcn.00403d56
mov edi, eax
test edi, edi
jne 0x4058d9
mov eax, 0x8007000e
push eax
mov esi, eax
push 0x37f
jmp 0x4057e0
test ebx, ebx
je 0x40585b
push 1
push ebx
call fcn.00403bb8
mov edi, eax
test edi, edi
jne 0x4058d9
mov eax, 0x8007000e
push eax
mov esi, eax
push 0x38c
jmp 0x4057e0
xor ecx, ecx
mov eax, ecx
mov dword [ebp + 0x10], ecx
mov dword [ebp + 0x1c], eax
jmp 0x4058e7
xor ecx, ecx
mov dword [ebp + 0x14], ecx
lea ecx, [ebp + 0x14]
push ecx
push eax
push ebx
call fcn.004050bd
mov esi, eax
test esi, esi
js 0x40596d
mov ecx, dword [ebp + 0x1c]
lea eax, [ebp + 0x10]
push 0
push eax
push dword [ebp + 0x14]
add ecx, edi
push ecx
push dword [ebp - 4]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x40593f
mov eax, dword [ebp + 0x1c]
add eax, dword [ebp + 0x10]
cmp dword [ebp + 0x10], 0
mov dword [ebp + 0x1c], eax
jne 0x4058e5
cmp eax, ebx
je 0x405931
mov esi, 0x8000ffff
jmp 0x40596d
mov eax, dword [ebp + 8]
mov dword [eax], edi
xor edi, edi
mov eax, dword [ebp + 0xc]
mov dword [eax], ebx
jmp 0x40596d
call dword [sym.imp.KERNEL32.dll_GetLastError]
movzx esi, ax
or esi, 0x80070000
test eax, eax
cmovle esi, eax
mov eax, 0x80004005
test esi, esi
cmovns esi, eax
push esi
push 0x399
push str.fileutil.cpp
call fcn.00403a8b
test edi, edi
je 0x405977
push edi
call fcn.00403c7f
mov eax, dword [ebp - 4]
cmp eax, 0xffffffff
je 0x405986
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
pop ebx
pop edi
mov eax, esi
pop esi
mov esp, ebp
pop ebp
ret 0x1c