Function at 0x40fe10
Capabilities:
Get file size
Read file on windows
Write file on windows

Disassembly:
push 0xffffffffffffffff
push 0x4fccbb
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x88
push ebx
push ebp
push esi
push edi
xor ebx, ebx
mov ecx, 0xf
xor eax, eax
lea edi, [esp + 0x59]
mov byte [esp + 0x58], bl
mov esi, dword [esp + 0xb4]
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
stosb byte es:[edi], al
lea eax, [esp + 0x4c]
lea ecx, [esp + 0x38]
push eax
lea edx, [esp + 0x28]
push ecx
mov ecx, dword [esi + 0x1f4]
push edx
mov edx, dword [esi + 0x1ec]
lea eax, [esp + 0x64]
push 0x40
push eax
mov eax, dword [esi + 0x20]
push ecx
push edx
push eax
mov dword [esp + 0x60], ebx
mov dword [esp + 0x58], ebx
mov dword [esp + 0x6c], ebx
mov dword [esp + 0x44], ebx
call fcn.00413cf0
add esp, 0x20
cmp eax, ebx
mov dword [esp + 0x3c], eax
je 0x41032a
push eax
call fcn.00408aa0
add esp, 4
cmp eax, ebx
mov dword [esp + 0x14], eax
je 0x410333
mov edx, dword [esp + 0xa8]
lea ecx, [esp + 0x28]
push ecx
push edx
mov dword [esp + 0x30], ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov ecx, dword [esp + 0x28]
mov edi, dword [esp + 0xac]
push ecx
push eax
push edi
mov dword [esp + 0x2c], eax
call fcn.0040c330
add esp, 0xc
test eax, eax
je 0x41033c
mov edx, dword [esp + 0xbc]
mov eax, dword [esp + 0x38]
mov ebp, dword [esp + 0xb0]
cmp eax, ebx
mov dword [edx], 1
je 0x40ff0a
mov eax, dword [ebp + 0x24]
or al, 8
mov dword [ebp + 0x24], eax
cmp dword [esp + 0x4c], ebx
je 0x40ff18
mov eax, dword [ebp + 0x24]
or al, 0x10
mov dword [ebp + 0x24], eax
mov eax, dword [esp + 0xa8]
push eax
call fcn.00413f90
mov ecx, dword [esp + 0x24]
mov edx, dword [esp + 0x2c]
mov dword [esi + 0x10], eax
mov eax, dword [esp + 0x40]
mov dword [esi + 0x18], ecx
mov dword [esi + 0x1c], edx
mov edx, dword [esp + 0x28]
lea ecx, [esi + 0x28]
mov dword [esi + 0x24], eax
push ecx
lea eax, [esp + 0x60]
push edx
push eax
mov dword [esi + 0x14], ebx
call fcn.004170f0
mov ecx, dword [esp + 0xb8]
add esp, 0x10
mov dword [esi + 0x38], 0x3e0
mov dword [esi + 0x3c], ebx
push ebx
push ebx
push ebx
push ecx
mov dword [esi + 0x40], ebx
mov dword [esi + 0x44], ebx
mov dword [esi + 0x378], ebx
mov dword [esi + 0x37c], ebx
mov dword [esi + 0x380], ebx
mov dword [esi + 0x384], ebx
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
push ebx
push ebx
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
push 0x3e0
push ebp
push edi
call fcn.0040db80
add esp, 0xc
test eax, eax
je 0x410345
mov eax, dword [esi + 0x18]
mov dword [esp + 0x2c], ebx
cmp eax, ebx
mov dword [esp + 0x10], ebx
jne 0x40ffd5
cmp dword [esi + 0x1c], ebx
jne 0x40ffd5
mov dword [esp + 0x2c], 1
mov dword [esp + 0x10], ebx
jmp 0x410213
mov ecx, dword [esi + 0x1c]
mov ebp, 0x10000
cmp ecx, ebx
jne 0x40ffe7
cmp eax, ebp
jae 0x40ffe7
mov ebp, eax
push ebp
call fcn.004da41d
mov ecx, dword [esp + 0x18]
add esp, 4
mov dword [esp + 0x48], eax
mov edx, dword [ecx]
push ebp
call dword [edx + 8]
add eax, 4
push eax
mov dword [esp + 0x48], eax
call fcn.004da41d
add esp, 4
mov dword [esp + 0x54], eax
mov dword [esp + 0x18], eax
mov eax, dword [esi + 0x38]
push ebx
push ebx
push eax
push edi
mov dword [esp + 0x40], ebx
mov dword [esp + 0x60], ebx
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov edi, dword [esp + 0x48]
mov ecx, ebp
mov edx, ecx
xor eax, eax
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push ebx
and ecx, 3
rep stosb byte es:[edi], al
mov ecx, dword [esp + 0x48]
mov edi, dword [esp + 0x1c]
mov edx, ecx
xor eax, eax
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
and ecx, 3
rep stosb byte es:[edi], al
mov edi, dword [esp + 0x4c]
mov ecx, dword [esp + 0xac]
lea eax, [esp + 0x38]
mov dword [esp + 0x38], ebx
push eax
push ebp
push edi
push ecx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x41013a
mov eax, dword [esp + 0x34]
cmp eax, ebx
je 0x410143
lea edx, [esp + 0x50]
lea ecx, [esp + 0x30]
push edx
lea edx, [esp + 0x20]
push ecx
push edx
lea ecx, [esp + 0x50]
lea edx, [esp + 0x24]
push ecx
push edx
mov edx, dword [esp + 0x28]
push eax
mov eax, dword [esp + 0x3c]
push edi
lea ecx, [esp + 0x74]
push eax
push ecx
push edx
mov dword [esp + 0x44], ebx
call fcn.0040e080
add esp, 0x28
cmp eax, ebx
jne 0x410150
mov ecx, dword [esp + 0x18]
mov eax, dword [esp + 0x1c]
add ecx, 4
push eax
push ecx
call fcn.004170d0
mov edx, dword [esp + 0x20]
add esp, 8
mov dword [edx], eax
mov ecx, dword [esp + 0x1c]
mov edx, dword [esp + 0x18]
lea eax, [esp + 0x20]
push ebx
add ecx, 4
push eax
mov eax, dword [esp + 0xb4]
push ecx
push edx
push eax
mov dword [esp + 0x34], ebx
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
je 0x4101b4
mov ecx, dword [esp + 0x1c]
mov eax, dword [esp + 0x20]
add ecx, 4
cmp eax, ecx
jb 0x4101bb
mov eax, dword [esi + 0x3c]
cmp eax, ebx
jne 0x41012e
mov dword [esi + 0x40], ecx
inc eax
mov dword [esi + 0x44], ecx
mov dword [esi + 0x3c], eax
jmp 0x41002b
push 0x303c
push 0xd
jmp 0x4101c2
mov dword [esp + 0x2c], 1
jmp 0x4101d2
jge 0x4101ab
push 0x5441d0
lea ecx, [esp + 0x18]
call fcn.0043b820
mov edx, dword [esp + 0x24]
mov eax, dword [esp + 0x34]
mov ecx, dword [esp + 0x3c]
push 0x304f
push edx
push eax
push ecx
lea edx, [esp + 0x24]
push str.Error:_Encrypt_Data_Failed__File__Algrithm_d__DataLen_lu_KeyLen_lu__LINE_d
push edx
mov dword [esp + 0xb8], ebx
call fcn.0043f0a0
mov eax, dword [esp + 0x2c]
push eax
call fcn.00414ff0
add esp, 0x1c
lea ecx, [esp + 0x14]
mov dword [esp + 0xa0], 0xffffffff
call fcn.0043c090
push 0x3053
push 0x11
jmp 0x4101c2
push 0x305d
jmp 0x4101c0
push 0x3064
push 0xe
call fcn.00408f80
add esp, 8
mov dword [esp + 0x10], 1
cmp edi, ebx
je 0x4101df
push edi
call fcn.004da446
add esp, 4
mov eax, dword [esp + 0x54]
cmp eax, ebx
je 0x4101f0
push eax
call fcn.004da446
add esp, 4
mov eax, dword [esp + 0x30]
cmp eax, ebx
je 0x410205
push eax
call fcn.004da446
add esp, 4
mov dword [esp + 0x30], ebx
mov edi, dword [esp + 0xac]
mov ebp, dword [esp + 0xb0]
push edi
call dword [sym.imp.KERNEL32.dll_SetEndOfFile]
cmp dword [esp + 0x2c], ebx
je 0x410364
cmp dword [esp + 0x10], ebx
jne 0x410364
mov eax, dword [esp + 0xb8]
mov dword [esp + 0x40], 1
cmp eax, ebx
je 0x4102fd
mov eax, dword [esi + 0x3c]
cmp eax, ebx
jne 0x41025e
mov dword [esi + 0x378], 0x3e0
mov dword [esi + 0x37c], ebx
jmp 0x41028e
mov ecx, dword [esi + 0x40]
push ebx
dec eax
push ecx
push ebx
push eax
call fcn.004242d0
mov ecx, dword [esi + 0x44]
xor ebp, ebp
add eax, ecx
adc edx, ebp
mov ebp, dword [esp + 0xb0]
add eax, 0x3e0
adc edx, ebx
mov dword [esi + 0x378], eax
mov dword [esi + 0x37c], edx
mov edx, dword [esp + 0xb8]
mov eax, dword [ebp + 0x20]
push edx
push esi
push eax
push edi
call fcn.0040a500
add esp, 0x10
test eax, eax
je 0x4102ee
mov ecx, dword [ebp + 0x24]
or ecx, 4
mov dword [ebp + 0x24], ecx
mov ecx, dword [esp + 0xb8]
push ecx
call fcn.004171b0
add esp, 4
test eax, eax
jne 0x4102cd
mov eax, dword [ebp + 0x24]
or al, 1
mov dword [ebp + 0x24], eax
mov edx, dword [esp + 0xb8]
add edx, 0x10
push edx
call fcn.004171b0
add esp, 4
test eax, eax
jne 0x4102fd
mov eax, dword [ebp + 0x24]
or al, 2
mov dword [ebp + 0x24], eax
jmp 0x4102fd
push 0x30a9
push 0x10
call fcn.00408f80
add esp, 8
push esi
push ebp
call fcn.0040d720
add esp, 8
test eax, eax
je 0x41034c
push ebx
push ebx
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
push 0x3e0
push ebp
push edi
call fcn.0040db80
add esp, 0xc
test eax, eax
je 0x410355
jmp 0x410364
push 0x2fd4
push 0xb
jmp 0x41035c
push 0x2fdb
push 0xc
jmp 0x41035c
push 0x2fea
push 0x25
jmp 0x41035c
push 0x3012
jmp 0x41035a
push 0x30b0
push 0x13
jmp 0x41035c
push 0x30b8
push 0x10
call fcn.00408f80
add esp, 8
mov ecx, dword [esp + 0x98]
mov eax, dword [esp + 0x40]
pop edi
pop esi
pop ebp
pop ebx
mov dword fs:[0], ecx
add esp, 0x94
ret