Function at 0x4125e2
Capabilities:
Encode data using xor
Read file on windows
Write file on windows

Disassembly:
push ebp
mov ebp, esp
and esp, 0xfffffff8
mov eax, 0x10ba0
call fcn.004528c0
push esi
push edi
lea eax, [esp + 0x320]
call fcn.0041143a
lea eax, [esp + 0x38]
call fcn.004121fe
push 0
push dword [ebx + 4]
xor edi, edi
push dword [ebx]
inc edi
mov dword [esp + 0x28], edi
call fcn.00450396
add esp, 0xc
lea eax, [esp + 0x998]
push eax
push dword [ebp + 8]
mov esi, ebx
call fcn.00412a3f
test eax, eax
je 0x41263d
push 6
pop eax
jmp 0x4128c7
push dword [ebx]
lea eax, [esp + 0x13]
push edi
push edi
push eax
call fcn.004509f1
push dword [ebx]
lea eax, [esp + 0x28]
push edi
push 4
pop esi
push esi
push eax
call fcn.004509f1
push dword [ebx]
mov edi, dword [esp + 0x38]
push 1
lea eax, [esp + 0x3c]
push esi
xor edi, 0x87bc
push eax
mov dword [esp + 0x48], edi
call fcn.004509f1
push dword [ebx]
lea eax, [esp + 0x48]
push 1
push esi
push eax
call fcn.004509f1
mov eax, dword [esp + 0x54]
add esp, 0x40
push dword [ebx]
xor eax, 0xa685
push 1
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x3c]
push esi
push eax
call fcn.004509f1
push dword [ebx]
lea eax, [esp + 0x44]
push 1
push esi
push eax
call fcn.004509f1
push dword [ebx]
lea eax, [esp + 0x50]
push 1
push esi
push eax
call fcn.004509f1
push dword [ebx]
lea eax, [esp + 0x5c]
push 1
push esi
push eax
call fcn.004509f1
add esp, 0x40
lea eax, [esp + 0x788]
push eax
push 0x104
call dword [0x465180]
lea eax, [esp + 0x110]
push eax
push 0
push 0x46b4d4
lea eax, [esp + 0x794]
push eax
call dword [0x465184]
lea eax, [esp + 0x110]
push 0x46b4dc
push eax
call fcn.004502fc
test eax, eax
pop ecx
pop ecx
mov dword [esp + 0x20], eax
jne 0x41272a
push 9
jmp 0x412637
mov eax, dword [ebx + 8]
add eax, 0x2477
push eax
lea esi, [esp + 0x3c]
call fcn.0041233e
xor esi, esi
cmp edi, esi
mov dword [esp + 0x10], esi
jle 0x4127d8
jmp 0x412750
mov edi, dword [esp + 0x18]
mov eax, dword [esp + 0x10]
add eax, 0x10000
cmp eax, edi
jle 0x412765
mov esi, edi
sub esi, dword [esp + 0x10]
jmp 0x41276a
mov esi, 0x10000
push dword [ebx]
add dword [esp + 0x14], esi
push esi
lea eax, [esp + 0xbb0]
push 1
push eax
call fcn.004509f1
add esp, 0x10
xor edi, edi
test esi, esi
jle 0x41279f
lea eax, [esp + 0x38]
push eax
call fcn.00412310
xor byte [esp + edi + 0xba8], al
inc edi
cmp edi, esi
jl 0x412789
push esi
lea eax, [esp + 0xbac]
push eax
lea edi, [esp + 0x24]
call fcn.004113e6
push dword [esp + 0x20]
lea eax, [esp + 0xbac]
push esi
push 1
push eax
call fcn.004505e5
mov eax, dword [esp + 0x20]
add esp, 0x10
cmp eax, dword [esp + 0x18]
jl 0x41274c
xor esi, esi
push dword [esp + 0x20]
call fcn.004506d9
mov eax, dword [esp + 0x20]
cmp dword [esp + 0x28], eax
pop ecx
je 0x412804
push 0xa
pop esi
lea eax, [esp + 0x110]
push eax
call dword [0x465140]
mov eax, esi
jmp 0x4128c7
cmp byte [esp + 0xf], 1
jne 0x412861
lea eax, [esp + 0x320]
call fcn.0041143a
lea eax, [esp + 0x110]
push eax
lea eax, [esp + 0x348]
push eax
mov dword [esp + 0x33c], esi
mov dword [esp + 0x340], esi
call fcn.0044d37c
push dword [ebp + 0xc]
lea eax, [esp + 0x55a]
push eax
call fcn.0044d37c
add esp, 0x10
lea eax, [esp + 0x320]
call fcn.00411468
test eax, eax
je 0x41287e
push 0xb
jmp 0x4127ee
push esi
push dword [ebp + 0xc]
lea eax, [esp + 0x118]
push eax
call dword [0x465154]
test eax, eax
jne 0x41287e
push 7
jmp 0x4127ee
lea eax, [esp + 0x110]
push eax
call dword [0x465140]
push esi
push 0x80
push 3
push esi
push 1
push 0x40000000
push dword [ebp + 0xc]
call dword [0x4652ac]
mov edi, eax
cmp edi, 0xffffffff
je 0x4128c5
lea eax, [esp + 0x28]
push eax
push esi
lea eax, [esp + 0x38]
push eax
push edi
call dword [0x46511c]
push edi
call dword [0x4652c8]
xor eax, eax
pop edi
pop esi
mov esp, ebp
pop ebp
ret 8