Function at 0x10008940
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 [0x10034040]
xor eax, esp
mov dword [esp + 0x50], eax
cmp dword [ecx + 0x18], 0x10
lea edx, [ecx + 4]
push ebx
push esi
push edi
jb 0x10008962
mov edx, dword [edx]
mov ecx, edx
lea esi, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x10008967
sub ecx, esi
push ecx
push edx
mov ecx, 0x10035eb8
call fcn.100050b0
mov esi, dword [0x10035ec8]
mov edi, dword [0x10035ecc]
mov ebx, dword [0x10035eb8]
test esi, esi
je 0x10008c79
cmp dword [0x10037b24], 0xf
mov eax, 0x10037b10
push dword [0x10037b20]
cmova eax, dword [0x10037b10]
mov ecx, 0x10035eb8
cmp edi, 0xf
mov edx, esi
push eax
cmova ecx, ebx
call fcn.10002590
add esp, 8
test al, al
jne 0x10008c79
mov ah, 0x6b
mov byte [esp + 0x11], 0
mov dl, 0x18
mov byte [esp + 0xc], ah
xor dl, ah
mov byte [esp + 0x11], 0
mov cl, 0xf
mov byte [esp + 0xf], dl
mov al, 0x45
lea edx, [esp + 0xd]
xor cl, ah
mov bl, 0x1f
xor al, ah
mov byte [esp + 0xe], cl
xor bl, ah
mov byte [esp + 0xd], al
mov byte [esp + 0x10], bl
lea ecx, [edx + 1]
mov al, byte [edx]
inc edx
test al, al
jne 0x10008a04
mov ebx, dword [0x10035eb8]
lea eax, [esp + 0xd]
sub edx, ecx
cmp edi, 0xf
push edx
mov ecx, 0x10035eb8
mov edx, esi
cmova ecx, ebx
push eax
push ecx
call fcn.10002e60
add esp, 0xc
cmp eax, 0xffffffff
je 0x10008c79
movaps xmm0, xmmword [0x10031000]
xor ecx, ecx
push dword [0x10037754]
movups xmmword [esp + 0x1c], xmm0
mov dword [esp + 0x2c], 0x24272776
mov dword [esp + 0x30], 0x39733248
mov dword [esp + 0x34], 0x636370
mov al, byte [esp + 0x1c]
xor byte [esp + ecx + 0x1d], al
inc ecx
cmp ecx, 0x1a
jb 0x10008a64
sub esp, 0x18
mov byte [esp + 0x4f], 0
mov edx, esp
lea ecx, [esp + 0x35]
xorps xmm0, xmm0
lea esi, [ecx + 1]
movups xmmword [edx], xmm0
mov dword [edx + 0x10], 0
mov dword [edx + 0x14], 0
mov al, byte [ecx]
inc ecx
test al, al
jne 0x10008a97
sub ecx, esi
lea eax, [esp + 0x35]
push ecx
push eax
mov ecx, edx
call fcn.10002470
lea eax, [esp + 0x50]
push eax
call fcn.100090c0
add esp, 0x20
mov ecx, 0x10037b10
push eax
call fcn.10004a10
mov ecx, dword [esp + 0x48]
cmp ecx, 0xf
jbe 0x10008afb
mov edx, dword [esp + 0x34]
inc ecx
mov eax, edx
cmp ecx, 0x1000
jb 0x10008af1
mov edx, dword [eax - 4]
add ecx, 0x23
sub eax, edx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x10008ca2
push ecx
push edx
call fcn.1000e3e6
add esp, 8
cmp dword [0x10035ecc], 0xf
mov eax, 0x10035eb8
mov esi, dword [sym.imp.KERNEL32.dll_CreateFileA]
cmova eax, dword [0x10035eb8]
push 0
push 0x80
push 3
push 0
push 3
push 0x80000000
push eax
call esi
cmp dword [0x10037b24], 0xf
mov ecx, 0x10037b10
push 0
cmova ecx, dword [0x10037b10]
mov edi, eax
push 0x80
push 2
push 0
push 2
push 0x40000000
push ecx
mov dword [esp + 0x30], edi
call esi
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ebx, eax
mov dword [esp + 0xc], ebx
cmp edi, 0xffffffff
je 0x10008c5d
cmp ebx, 0xffffffff
je 0x10008c59
lea eax, [esp + 0x50]
xor bl, bl
push eax
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
xor esi, esi
or esi, dword [esp + 0x50]
not esi
and esi, 1
add esi, 0x1f
push esi
call fcn.10015a42
mov edi, eax
add esp, 4
test edi, edi
je 0x10008c4b
push 0
lea eax, [esp + 0x50]
push eax
push 4
push edi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x10008bd2
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push edi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_WriteFile]
push esi
push 0
push edi
call fcn.100101d0
add esp, 0xc
mov dword [esp + 0x4c], 0
push 0
lea eax, [esp + 0x50]
push eax
push esi
push edi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x10008c3e
cmp dword [esp + 0x4c], esi
mov eax, 1
movzx ebx, bl
cmovb ebx, eax
lea eax, [esp + 0x4c]
push eax
push edi
push 0
push 1
push 0
push dword [0x10037758]
call dword [sym.imp.ADVAPI32.dll_CryptDecrypt]
test eax, eax
je 0x10008c3e
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push edi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_WriteFile]
test bl, bl
je 0x10008be6
push edi
call fcn.10013871
add esp, 4
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ebx, dword [esp + 0xc]
mov edi, dword [esp + 0x14]
test edi, edi
je 0x10008c60
push edi
call esi
test ebx, ebx
je 0x10008c90
push ebx
call esi
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x50]
xor ecx, esp
call fcn.1000e385
mov esp, ebp
pop ebp
ret
cmp edi, 0xf
mov eax, 0x10035eb8
push esi
cmova eax, ebx
mov ecx, 0x10037b10
push eax
call fcn.100050b0
mov ecx, dword [esp + 0x5c]
pop edi
pop esi
pop ebx
xor ecx, esp
call fcn.1000e385
mov esp, ebp
pop ebp
ret
call fcn.1001325f
int3