Function at 0x40ec20
Capabilities:
Encrypt data using rc4 ksa
Read file on windows

Disassembly:
sub esp, 0x240
push ebx
push esi
lea eax, [esp + 0x18]
mov esi, ecx
test eax, eax
push edi
mov dword [esp + 0x1c], esi
jne 0x40f139
push eax
push eax
push eax
push eax
push eax
call dword [sym.imp.KERNEL32.dll_LockFile]
xor eax, eax
movsx ecx, ax
mov byte [esp + ecx + 0xc], al
xor eax, eax
lea ecx, [esp + 0xc]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ec55
xor eax, eax
lea ecx, [esp + 0xc]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ec65
inc eax
cmp ax, 0x100
jl 0x40ec48
xor eax, eax
lea ecx, [esp + 0xc]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ec7c
mov byte [esp + 0x14], 0
push ebp
mov ebp, dword [esp + 0x18]
mov byte [esp + 0x14], 0
mov byte [esp + 0x15], 0
mov byte [esp + 0x1c], 0
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40eca5
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ecb5
xor ecx, ecx
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40ecc5
mov eax, dword [esp + 0x1c]
xor ebx, ebx
movsx edx, cx
and eax, 0xff
and ebp, 0xff
lea esi, [esp + edx + 0x10]
mov bl, byte [eax + 0x384]
mov dl, byte [esi]
mov edi, edx
and edi, 0xff
add ebx, edi
add ebx, ebp
and ebx, 0x800000ff
jns 0x40ed0c
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov ebp, dword [esp + 0x18]
mov edi, ebp
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
lea edi, [esp + edi + 0x10]
mov byte [esi], bl
mov esi, 0x57
mov byte [edi], dl
cdq
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40ec9f
mov edi, ebp
and edi, 0xff
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ed4f
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ed5f
xor ecx, ecx
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40ed6f
movsx eax, cx
mov dl, byte [esp + eax + 0x10]
xor ebx, ebx
lea esi, [esp + eax + 0x10]
mov eax, dword [esp + 0x1c]
and eax, 0xff
mov ebp, edx
and ebp, 0xff
mov bl, byte [eax + 0x384]
add edi, ebx
add ebp, edi
mov ebx, ebp
and ebx, 0x800000ff
jns 0x40edb4
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov edi, dword [esp + 0x18]
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
mov byte [esi], bl
mov byte [esp + edi + 0x10], dl
cdq
mov esi, 0x57
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40ed49
xor ebx, ebx
push ebx
push ebx
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_ReadFile]
xor eax, eax
movsx ecx, ax
mov byte [esp + ecx + 0x10], al
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ee01
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ee11
inc eax
cmp ax, 0x100
jl 0x40edf4
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ee28
mov byte [esp + 0x18], bl
mov byte [esp + 0x14], bl
mov ebp, dword [esp + 0x18]
mov byte [esp + 0x15], bl
mov byte [esp + 0x1c], bl
jmp 0x40ee4a
xor ebx, ebx
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ee50
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ee60
xor ecx, ecx
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40ee70
mov eax, dword [esp + 0x1c]
xor ebx, ebx
movsx edx, cx
and eax, 0xff
and ebp, 0xff
lea esi, [esp + edx + 0x10]
mov bl, byte [eax + 0x384]
mov dl, byte [esi]
mov edi, edx
and edi, 0xff
add ebx, edi
add ebx, ebp
and ebx, 0x800000ff
jns 0x40eeb7
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov ebp, dword [esp + 0x18]
mov edi, ebp
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
lea edi, [esp + edi + 0x10]
mov byte [esi], bl
mov esi, 0x57
mov byte [edi], dl
cdq
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40ee48
mov edi, ebp
and edi, 0xff
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40eefa
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40ef0a
xor ecx, ecx
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40ef1a
movsx eax, cx
mov dl, byte [esp + eax + 0x10]
xor ebx, ebx
lea esi, [esp + eax + 0x10]
mov eax, dword [esp + 0x1c]
and eax, 0xff
mov ebp, edx
and ebp, 0xff
mov bl, byte [eax + 0x384]
add edi, ebx
add ebp, edi
mov ebx, ebp
and ebx, 0x800000ff
jns 0x40ef5f
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov edi, dword [esp + 0x18]
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
mov byte [esi], bl
mov byte [esp + edi + 0x10], dl
cdq
mov esi, 0x57
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40eef4
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor ecx, ecx
xor eax, eax
movsx edx, ax
mov byte [esp + edx + 0x10], al
xor eax, eax
lea edx, [esp + 0x10]
mov byte [edx], al
inc eax
inc edx
cmp ax, 0x100
jl 0x40efa7
xor eax, eax
lea edx, [esp + 0x10]
mov byte [edx], al
inc eax
inc edx
cmp ax, 0x100
jl 0x40efb7
inc eax
cmp ax, 0x100
jl 0x40ef9a
xor eax, eax
lea edx, [esp + 0x10]
mov byte [edx], al
inc eax
inc edx
cmp ax, 0x100
jl 0x40efce
mov byte [esp + 0x18], cl
mov byte [esp + 0x14], cl
mov ebp, dword [esp + 0x18]
mov byte [esp + 0x15], cl
mov byte [esp + 0x1c], cl
jmp 0x40eff0
xor ecx, ecx
xor eax, eax
lea edx, [esp + 0x10]
mov byte [edx], al
inc eax
inc edx
cmp ax, 0x100
jl 0x40eff6
xor eax, eax
lea edx, [esp + 0x10]
mov byte [edx], al
inc eax
inc edx
cmp ax, 0x100
jl 0x40f006
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40f014
movsx eax, cx
mov dl, byte [esp + eax + 0x10]
xor ebx, ebx
lea esi, [esp + eax + 0x10]
mov eax, dword [esp + 0x1c]
and eax, 0xff
mov edi, edx
and edi, 0xff
and ebp, 0xff
mov bl, byte [eax + 0x384]
add ebx, edi
add ebx, ebp
and ebx, 0x800000ff
jns 0x40f05d
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov ebp, dword [esp + 0x18]
mov edi, ebp
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
lea edi, [esp + edi + 0x10]
mov byte [esi], bl
mov esi, 0x57
mov byte [edi], dl
cdq
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40efee
mov edi, ebp
and edi, 0xff
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40f0a0
xor eax, eax
lea ecx, [esp + 0x10]
mov byte [ecx], al
inc eax
inc ecx
cmp ax, 0x100
jl 0x40f0b0
xor ecx, ecx
lea eax, [esp + 0x10]
mov byte [eax], cl
inc ecx
inc eax
cmp cx, 0x100
jl 0x40f0c0
mov eax, dword [esp + 0x1c]
xor ebx, ebx
movsx edx, cx
and eax, 0xff
lea esi, [esp + edx + 0x10]
mov bl, byte [eax + 0x384]
mov dl, byte [esi]
add edi, ebx
mov ebp, edx
and ebp, 0xff
add ebp, edi
mov ebx, ebp
and ebx, 0x800000ff
jns 0x40f103
dec ebx
or ebx, 0xffffff00
inc ebx
mov byte [esp + 0x18], bl
mov edi, dword [esp + 0x18]
and edi, 0xff
inc eax
mov bl, byte [esp + edi + 0x10]
mov byte [esi], bl
mov byte [esp + edi + 0x10], dl
cdq
mov esi, 0x57
idiv esi
inc ecx
cmp cx, 0x100
mov byte [esp + 0x1c], dl
jl 0x40f09a
mov esi, dword [esp + 0x20]
pop ebp
mov ebx, dword [esp + 0x254]
push 0
push 2
mov dword [ebx], 0
mov eax, dword [0x4353d0]
call dword [eax + 0xc]
mov edi, eax
cmp edi, 0xffffffff
je 0x40f218
mov edx, dword [0x4353d0]
push 0x128
lea ecx, [esp + 0x24]
push 0
push ecx
call dword [edx + 0x21c]
mov ecx, dword [0x4353d0]
add esp, 0xc
lea eax, [esp + 0x20]
mov dword [esp + 0x20], 0x128
push eax
push edi
call dword [ecx + 8]
test eax, eax
je 0x40f218
mov eax, dword [0x4353d0]
push 0x104
lea edx, [esp + 0x14c]
push 0
push edx
call dword [eax + 0x21c]
mov edx, dword [esp + 0x34]
add esp, 0xc
lea ecx, [esp + 0x148]
push ecx
push edx
mov ecx, esi
call fcn.0040fee0
lea eax, [esp + 0x148]
mov ecx, esi
push eax
call fcn.0040f840
test eax, eax
je 0x40f1eb
lea ecx, [esp + 0x148]
push ecx
lea ecx, [esi + 4]
call fcn.004127f0
mov eax, dword [0x4353d0]
lea edx, [esp + 0x20]
push edx
push edi
call dword [eax + 4]
test eax, eax
jne 0x40f197
mov ecx, dword [0x4353d0]
push edi
call dword [ecx + 0x44]
mov edx, dword [esp + 0x250]
push ebx
push edx
lea ecx, [esi + 4]
call fcn.00412d70
pop edi
pop esi
pop ebx
add esp, 0x240
ret 8