Function at 0x403b5d
Capabilities:
Get file size
Read file on windows

Disassembly:
push ecx
push ecx
push ebx
push ebp
push esi
push edi
push dword [0x465ebc]
xor ebp, ebp
call fcn.0040c71c
mov ebx, eax
call fcn.00403a7e
mov esi, dword [esp + 0x1c]
test esi, esi
jne 0x403b84
mov esi, 0x45b954
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileW]
xor eax, eax
push eax
push 0x80
push 3
push eax
push 1
push 0xc0000000
push esi
mov dword [ebx + 0xc], eax
call edi
mov dword [ebx], eax
cmp eax, 0xffffffff
jne 0x403bec
push 0
push 0x80
push 3
push 0
push 1
push 0x80000000
push esi
call edi
mov dword [ebx], eax
cmp eax, 0xffffffff
jne 0x403bdc
push 0
push 0x80
push 3
push 0
push 3
push 0x80000000
push esi
call edi
mov dword [ebx], eax
mov dword [ebx + 0xc], 1
cmp eax, 0xffffffff
je 0x403eae
push 0
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
cmp dword [esp + 0x24], 2
mov edi, eax
jne 0x403c05
mov eax, 0xfde9
jmp 0x403c07
xor eax, eax
mov dword [ebx + 0x18], eax
mov eax, dword [esp + 0x20]
mov esi, dword [sym.imp.KERNEL32.dll_ReadFile]
mov dword [ebx + 0x2c], eax
cmp edi, 3
jl 0x403c5f
push 0
lea eax, [esp + 0x18]
push eax
push 3
lea eax, [esp + 0x1c]
push eax
push dword [ebx]
call esi
cmp dword [esp + 0x14], 3
jne 0x403d18
push 3
lea eax, [esp + 0x14]
push 0x4575a0
push eax
call fcn.0040e04b
add esp, 0xc
test eax, eax
jne 0x403d18
mov dword [ebx + 0x18], 0xfde9
sub edi, 3
test edi, edi
jle 0x403d48
lea eax, [edi + 2]
xor ecx, ecx
push eax
push ecx
push dword [0x4654c4]
cmp dword [ebx + 0x18], ecx
jne 0x403d2a
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov esi, eax
mov dword [esp + 0x20], esi
test esi, esi
je 0x403d48
lea eax, [edi*4 + 2]
push eax
push 0
push dword [0x4654c4]
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov dword [ebx + 0x10], eax
test eax, eax
je 0x403d48
push 0
lea eax, [esp + 0x18]
push eax
push edi
push esi
push dword [ebx]
call dword [sym.imp.KERNEL32.dll_ReadFile]
mov eax, dword [esp + 0x14]
push esi
mov byte [esi + eax], 0
call fcn.0040f970
mov edi, eax
push edi
call fcn.0040f9f0
mov esi, eax
push esi
push dword [ebx + 0x10]
call fcn.0040f6d0
pop ecx
pop ecx
push esi
call fcn.0040f8f0
push edi
call fcn.0040f8f0
push dword [ebx + 0x10]
call fcn.0040f7d0
pop ecx
push dword [esp + 0x20]
mov dword [ebx + 0x18], 0xfde9
mov edi, eax
push 0
push dword [0x4654c4]
call dword [sym.imp.KERNEL32.dll_HeapFree]
jmp 0x403d48
xor eax, eax
push eax
push eax
push eax
push dword [ebx]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
jmp 0x403c67
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov dword [ebx + 0x10], eax
test eax, eax
je 0x403d48
push 0
lea ecx, [esp + 0x18]
push ecx
push edi
push eax
push dword [ebx]
call esi
mov edi, dword [esp + 0x14]
mov eax, dword [ebx + 0x10]
test eax, eax
je 0x403eeb
xor ecx, ecx
mov word [eax + edi], cx
mov esi, dword [ebx + 0x10]
lea eax, [esi + edi]
mov dword [ebx + 0x14], eax
cmp esi, eax
jae 0x403eeb
push 0x10
pop edi
mov al, byte [esi]
cmp al, 0x20
je 0x403d77
cmp al, 9
jne 0x403d7a
inc esi
jmp 0x403d6d
cmp al, 0x3b
jne 0x403dc8
inc esi
cmp byte [esi], 0x20
jne 0x403d85
inc esi
push edi
test ebp, ebp
je 0x403d92
push ebp
call fcn.0040fada
jmp 0x403d9b
lea eax, [ebx + 0x1c]
push eax
call fcn.0040cde1
lea ebp, [eax - 8]
pop ecx
pop ecx
mov dword [ebp + 8], 2
mov dword [ebp + 0xc], esi
jmp 0x403dbd
cmp al, 0xa
je 0x403e95
cmp al, 0xd
je 0x403e95
inc esi
mov al, byte [esi]
test al, al
jne 0x403dac
jmp 0x403e95
cmp al, 0x5b
jne 0x403e2f
inc esi
push edi
test ebp, ebp
je 0x403dda
push ebp
call fcn.0040fada
jmp 0x403de3
lea eax, [ebx + 0x1c]
push eax
call fcn.0040cde1
lea ebp, [eax - 8]
mov dword [ebp + 8], 1
mov dword [ebp + 0xc], esi
mov al, byte [esi]
pop ecx
pop ecx
test al, al
je 0x403e14
mov cl, al
mov al, cl
cmp cl, 0x5d
je 0x403e14
cmp cl, 0xa
je 0x403e14
cmp cl, 0xd
je 0x403e14
inc esi
mov al, byte [esi]
mov cl, al
test al, al
jne 0x403dfa
mov byte [esi], 0
inc esi
cmp al, 0x5d
jne 0x403e99
jmp 0x403e27
cmp al, 0xa
je 0x403e99
cmp al, 0xd
je 0x403e99
inc esi
mov al, byte [esi]
test al, al
jne 0x403e1e
jmp 0x403e99
cmp al, 0xa
je 0x403e99
cmp al, 0xd
je 0x403e99
mov edx, esi
jmp 0x403e4a
cmp al, 0x3d
je 0x403e4e
cmp al, 0xd
je 0x403e4e
cmp al, 0xa
je 0x403e4e
inc esi
mov al, byte [esi]
test al, al
jne 0x403e3b
lea eax, [esi - 1]
jmp 0x403e60
mov cl, byte [eax]
cmp cl, 0x20
je 0x403e5f
cmp cl, 9
jne 0x403e64
dec eax
cmp eax, edx
ja 0x403e53
mov byte [eax + 1], 0
inc esi
mov al, byte [esi]
cmp al, 0x20
je 0x403e68
cmp al, 9
je 0x403e68
push esi
push edx
lea eax, [ebx + 0x1c]
push ebp
push eax
call fcn.00403b2d
add esp, 0x10
mov ebp, eax
jmp 0x403e8f
cmp al, 0xa
je 0x403e95
cmp al, 0xd
je 0x403e95
inc esi
mov al, byte [esi]
test al, al
jne 0x403e86
mov byte [esi], 0
inc esi
mov al, byte [esi]
cmp al, 0xa
je 0x403e98
cmp al, 0xd
je 0x403e98
cmp esi, dword [ebx + 0x14]
jb 0x403d6d
jmp 0x403eeb
mov eax, dword [esp + 0x20]
and dword [ebx], ebp
push esi
mov dword [ebx + 0x2c], eax
mov dword [ebx + 0x18], 0xfde9
call fcn.0040d9e3
pop ecx
lea eax, [eax*2 + 2]
push eax
push 0
push dword [0x4654c4]
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov dword [ebx + 4], eax
test eax, eax
je 0x403eeb
push esi
push eax
call fcn.0040d9c1
pop ecx
pop ecx
mov eax, dword [ebx]
pop edi
pop esi
pop ebp
pop ebx
pop ecx
pop ecx
ret 0xc