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 [0x10033040]
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, 0x10034eb8
call fcn.10004f20
mov esi, dword [0x10034ec8]
mov edi, dword [0x10034ecc]
test esi, esi
je 0x10008c49
call fcn.100085a0
test al, al
jne 0x10008c49
mov ah, 0x45
mov byte [esp + 0x11], 0
mov dl, 0x36
mov byte [esp + 0xc], ah
xor dl, ah
mov byte [esp + 0x11], 0
mov cl, 0x21
mov byte [esp + 0xf], dl
mov al, 0x6b
lea edx, [esp + 0xd]
xor cl, ah
mov bl, 0x31
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 0x100089d4
mov ebx, dword [0x10034eb8]
lea eax, [esp + 0xd]
sub edx, ecx
cmp edi, 0xf
push edx
mov ecx, 0x10034eb8
mov edx, esi
cmova ecx, ebx
push eax
push ecx
call fcn.100084b0
add esp, 0xc
cmp eax, 0xffffffff
je 0x10008c4f
movaps xmm0, xmmword [0x1002ff70]
xor ecx, ecx
push dword [0x10036754]
movups xmmword [esp + 0x1c], xmm0
mov dword [esp + 0x2c], 0x70737322
mov dword [esp + 0x30], 0x6d27661c
mov dword [esp + 0x34], 0x373724
mov al, byte [esp + 0x1c]
xor byte [esp + ecx + 0x1d], al
inc ecx
cmp ecx, 0x1a
jb 0x10008a34
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 0x10008a67
sub ecx, esi
lea eax, [esp + 0x35]
push ecx
push eax
mov ecx, edx
call fcn.10002460
lea eax, [esp + 0x50]
push eax
call fcn.10009080
add esp, 0x20
mov ecx, 0x10036b10
push eax
call fcn.10004880
mov ecx, dword [esp + 0x48]
cmp ecx, 0xf
jbe 0x10008acb
mov edx, dword [esp + 0x34]
inc ecx
mov eax, edx
cmp ecx, 0x1000
jb 0x10008ac1
mov edx, dword [eax - 4]
add ecx, 0x23
sub eax, edx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x10008c78
push ecx
push edx
call fcn.1000dda6
add esp, 8
cmp dword [0x10034ecc], 0xf
mov eax, 0x10034eb8
mov esi, dword [sym.imp.KERNEL32.dll_CreateFileA]
cmova eax, dword [0x10034eb8]
push 0
push 0x80
push 3
push 0
push 3
push 0x80000000
push eax
call esi
cmp dword [0x10036b24], 0xf
mov ecx, 0x10036b10
push 0
cmova ecx, dword [0x10036b10]
mov edi, eax
push 0x80
push 2
push 0
push 2
push 0x40000000
push ecx
mov dword [esp + 0x28], edi
call esi
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ebx, eax
mov dword [esp + 0x14], ebx
cmp edi, 0xffffffff
je 0x10008c2d
cmp ebx, 0xffffffff
je 0x10008c29
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.10015402
mov edi, eax
add esp, 4
test edi, edi
je 0x10008c1b
push 0
lea eax, [esp + 0x50]
push eax
push 4
push edi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x10008ba2
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push edi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_WriteFile]
push esi
push 0
push edi
call fcn.1000fb90
add esp, 0xc
mov dword [esp + 0x4c], 0
push 0
lea eax, [esp + 0x50]
push eax
push esi
push edi
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x10008c0e
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 [0x10036758]
call dword [sym.imp.ADVAPI32.dll_CryptDecrypt]
test eax, eax
je 0x10008c0e
push 0
lea eax, [esp + 0x50]
push eax
push dword [esp + 0x54]
push edi
push dword [esp + 0x24]
call dword [sym.imp.KERNEL32.dll_WriteFile]
test bl, bl
je 0x10008bb6
push edi
call fcn.10013231
add esp, 4
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
mov edi, dword [esp + 0xc]
mov ebx, dword [esp + 0x14]
test edi, edi
je 0x10008c30
push edi
call esi
test ebx, ebx
je 0x10008c66
push ebx
call esi
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x50]
xor ecx, esp
call fcn.1000dd45
mov esp, ebp
pop ebp
ret
mov ebx, dword [0x10034eb8]
cmp edi, 0xf
mov eax, 0x10034eb8
push esi
cmova eax, ebx
mov ecx, 0x10036b10
push eax
call fcn.10004f20
mov ecx, dword [esp + 0x5c]
pop edi
pop esi
pop ebx
xor ecx, esp
call fcn.1000dd45
mov esp, ebp
pop ebp
ret
call fcn.10012c1f
int3