Function at 0x1000f270
Capabilities:
Encode data using xor
Encrypt or decrypt via wincrypt
Get file size
Read file on windows
Write file on windows

Disassembly:
push ebp
mov ebp, esp
and esp, 0xfffffff8
sub esp, 0x54
mov eax, dword [0x1007d084]
xor eax, esp
mov dword [esp + 0x50], eax
cmp dword [ecx + 0x18], 0x10
lea edx, [ecx + 4]
push ebx
push esi
push edi
jb 0x1000f293
mov edx, dword [ecx + 4]
cmp byte [edx], 0
jne 0x1000f29c
xor ecx, ecx
jmp 0x1000f2aa
mov ecx, edx
lea esi, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x1000f2a1
sub ecx, esi
push ecx
mov edi, 0x10086898
push edx
mov ecx, edi
call fcn.100028b0
mov edx, dword [0x100868a8]
mov esi, 0x100868b0
test edx, edx
je 0x1000f563
cmp dword [0x100868c4], 0x10
mov eax, esi
push dword [0x100868c0]
cmovae eax, dword [0x100868b0]
mov ecx, edi
cmp dword [0x100868ac], 0x10
push eax
cmovae ecx, dword [0x10086898]
call fcn.10002a10
add esp, 8
test eax, eax
je 0x1000f563
mov ah, 0x57
mov byte [esp + 0x11], 0
mov bl, 0x79
mov byte [esp + 0xc], ah
mov al, 0x33
mov byte [esp + 0x11], 0
mov cl, 0x24
mov dl, 0x23
xor bl, ah
xor al, ah
xor cl, ah
mov byte [esp + 0xd], bl
xor dl, ah
mov byte [esp + 0xe], al
mov byte [esp + 0xf], cl
mov byte [esp + 0x10], dl
test bl, bl
jne 0x1000f33a
xor ecx, ecx
jmp 0x1000f34a
lea ecx, [esp + 0xd]
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x1000f341
sub ecx, edx
push ecx
push ecx
lea eax, [esp + 0x15]
mov ecx, edi
push eax
call fcn.10007680
cmp eax, 0xffffffff
je 0x1000f563
movaps xmm0, xmmword [0x10073600]
xor ecx, ecx
push dword [0x10082410]
movups xmmword [esp + 0x1c], xmm0
mov dword [esp + 0x2c], 0x76757524
mov dword [esp + 0x30], 0x6b21601a
mov dword [esp + 0x34], 0x313122
nop dword [eax]
mov al, byte [esp + 0x1c]
xor byte [esp + ecx + 0x1d], al
inc ecx
cmp ecx, 0x1a
jb 0x1000f390
sub esp, 0x18
mov byte [esp + 0x4f], 0
lea eax, [esp + 0x35]
mov ecx, esp
push eax
call fcn.100029b0
lea eax, [esp + 0x50]
push eax
call fcn.1000f9c0
add esp, 0x20
mov ecx, esi
push eax
call fcn.100051a0
mov eax, dword [esp + 0x48]
cmp eax, 0x10
jb 0x1000f3df
inc eax
lea ecx, [esp + 0x34]
push eax
push dword [esp + 0x38]
call fcn.10002790
cmp dword [0x100868ac], 0x10
mov esi, dword [sym.imp.KERNEL32.dll_CreateFileA]
cmovae edi, dword [0x10086898]
push 0
push 0x80
push 3
push 0
push 3
push 0x80000000
push edi
call esi
cmp dword [0x100868c4], 0x10
mov edi, eax
push 0
push 0x80
push 2
push 0
push 2
mov eax, 0x100868b0
mov dword [esp + 0x20], edi
cmovae eax, dword [0x100868b0]
push 0x40000000
push eax
call esi
mov ebx, eax
mov dword [esp + 0x14], ebx
cmp edi, 0xffffffff
je 0x1000f53d
cmp ebx, 0xffffffff
je 0x1000f53d
lea eax, [esp + 0x50]
xor bl, bl
push eax
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
mov eax, dword [esp + 0x54]
xor ecx, ecx
or ecx, dword [esp + 0x50]
and cl, 1
cdq
movzx edi, cl
neg edi
sbb edi, edi
add edi, 0x20
push edi
call fcn.10043156
mov esi, eax
add esp, 4
test esi, esi
je 0x1000f535
push 0
lea eax, [esp + 0x50]
push eax
push 4
push esi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x1000f4b5
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push esi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_WriteFile]
push edi
push 0
push esi
call fcn.10039110
add esp, 0xc
mov dword [esp + 0x4c], 0
nop dword [eax]
push 0
lea eax, [esp + 0x50]
push eax
push edi
push esi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x1000f528
cmp dword [esp + 0x4c], edi
mov eax, 1
movzx ebx, bl
cmovb ebx, eax
lea eax, [esp + 0x4c]
push eax
push esi
push 0
push 1
push 0
push dword [0x10082414]
call dword [sym.imp.ADVAPI32.dll_CryptDecrypt]
test eax, eax
je 0x1000f528
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push esi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_WriteFile]
test bl, bl
je 0x1000f4d0
push esi
call fcn.100426ce
add esp, 4
mov edi, dword [esp + 0xc]
mov ebx, dword [esp + 0x14]
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
test edi, edi
je 0x1000f54a
push edi
call esi
test ebx, ebx
je 0x1000f573
push ebx
call esi
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x50]
xor ecx, esp
call fcn.10020ab5
mov esp, ebp
pop ebp
ret
push 0xffffffffffffffff
push 0
push 0x10086898
mov ecx, esi
call fcn.10002470
mov ecx, dword [esp + 0x5c]
pop edi
pop esi
pop ebx
xor ecx, esp
call fcn.10020ab5
mov esp, ebp
pop ebp
ret