Function at 0x63e420
Capabilities:
Check if file exists
Delete file
Read file via mapping

Disassembly:
sub esp, 0x230
mov eax, dword [0x89b044]
xor eax, esp
mov dword [esp + 0x22c], eax
push ebx
mov ebx, dword [esp + 0x23c]
push esi
mov esi, ecx
cmp dword [esi + 0x10], 0
mov dword [esp + 0x18], esi
mov dword [esp + 0x14], ebx
je 0x63e454
xor eax, eax
jmp 0x63e6e4
push edi
test ebx, ebx
je 0x63e6e1
mov edi, dword [esp + 0x240]
test edi, edi
jl 0x63e6e1
mov ecx, dword [esi + 0x2c]
sub ecx, dword [esi + 0x28]
add esi, 0x1c
mov eax, 0x532ae21d
imul ecx
sar edx, 8
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp edi, eax
jge 0x63e6e1
push edi
mov ecx, esi
call fcn.0063d710
mov ecx, dword [eax]
test byte [ecx + 0x26], 0x10
jne 0x63e6e1
mov ecx, dword [esi + 0x10]
sub ecx, dword [esi + 0xc]
mov eax, 0x532ae21d
imul ecx
sar edx, 8
mov eax, edx
shr eax, 0x1f
add eax, edx
mov dword [esp + 0x10], 0
cmp edi, eax
jb 0x63e4ca
call fcn.0071ffb6
mov ecx, dword [esi + 0xc]
push ebp
mov ebp, edi
imul ebp, ebp, 0x314
mov edx, dword [ecx + ebp]
test byte [edx + 8], 1
jne 0x63e6d3
xor eax, eax
push 0x206
push eax
lea ecx, [esp + 0x3e]
push ecx
mov word [esp + 0x40], ax
call fcn.007202b0
push ebx
lea edx, [esp + 0x44]
push 0x104
push edx
call fcn.00725750
add esp, 0x18
lea eax, [esp + 0x34]
push eax
call dword [sym.imp.SHLWAPI.dll_PathRemoveFileSpecW]
lea ecx, [esp + 0x34]
push ecx
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
jne 0x63e533
lea edx, [esp + 0x34]
push edx
push eax
call dword [sym.imp.SHELL32.dll_SHCreateDirectory]
push 0
push 0x80
push 2
push 0
push 0
push 0xc0000000
push ebx
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov dword [esp + 0x10], eax
cmp eax, 0xffffffff
je 0x63e6d3
mov ecx, dword [esi + 0x10]
sub ecx, dword [esi + 0xc]
mov eax, 0x532ae21d
imul ecx
sar edx, 8
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp edi, eax
jb 0x63e579
call fcn.0071ffb6
mov ecx, dword [esi + 0xc]
mov edx, dword [ecx + ebp]
mov ebx, dword [edx + 0x18]
test ebx, ebx
jne 0x63e593
mov dword [esp + 0x14], 1
jmp 0x63e6bd
mov eax, dword [esp + 0x10]
push 0
push 0
push ebx
push eax
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
cmp eax, 0xffffffff
je 0x63e6bd
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.KERNEL32.dll_SetEndOfFile]
test eax, eax
je 0x63e6bd
mov edx, dword [esp + 0x10]
push 0
push 0
push 0
push 4
push 0
push edx
call dword [sym.imp.KERNEL32.dll_CreateFileMappingW]
mov dword [esp + 0x28], eax
test eax, eax
je 0x63e6bd
push 0
push 0
push 0
push 6
push eax
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [esp + 0x18], eax
test eax, eax
je 0x63e6b2
mov ecx, dword [esp + 0x20]
push ebx
push eax
push edi
call fcn.0063db80
test eax, eax
je 0x63e6a7
mov ecx, dword [esi + 0x10]
sub ecx, dword [esi + 0xc]
mov eax, 0x532ae21d
imul ecx
sar edx, 8
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp edi, eax
jb 0x63e62f
call fcn.0071ffb6
mov ecx, dword [esi + 0x10]
sub ecx, dword [esi + 0xc]
mov ebx, dword [esi + 0xc]
mov eax, 0x532ae21d
imul ecx
sar edx, 8
mov ecx, edx
shr ecx, 0x1f
add ecx, edx
add ebx, ebp
cmp edi, ecx
jb 0x63e654
call fcn.0071ffb6
mov esi, dword [esi + 0xc]
mov eax, dword [ebx]
movzx ecx, word [eax + 0xc]
lea edx, [esp + 0x2c]
push edx
mov edx, dword [esi + ebp]
movzx eax, word [edx + 0xe]
add esi, ebp
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_DosDateTimeToFileTime]
test eax, eax
je 0x63e69f
lea ecx, [esp + 0x20]
push ecx
lea edx, [esp + 0x30]
push edx
call dword [sym.imp.KERNEL32.dll_LocalFileTimeToFileTime]
test eax, eax
je 0x63e69f
mov ecx, dword [esp + 0x10]
lea eax, [esp + 0x20]
push eax
push 0
push 0
push ecx
call dword [sym.imp.KERNEL32.dll_SetFileTime]
mov dword [esp + 0x14], 1
mov edx, dword [esp + 0x18]
push edx
call dword [sym.imp.KERNEL32.dll_UnmapViewOfFile]
mov eax, dword [esp + 0x28]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp dword [esp + 0x14], 0
jne 0x63e6da
mov ebx, dword [esp + 0x1c]
push ebx
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
mov eax, dword [esp + 0x14]
pop ebp
jmp 0x63e6e3
xor eax, eax
pop edi
mov ecx, dword [esp + 0x234]
pop esi
pop ebx
xor ecx, esp
call fcn.0071fe0b
add esp, 0x230
ret 8