Function at 0x40d970
Capabilities:
Delete registry key
Delete registry value
Encode data using xor
Query or enumerate registry value
Set registry value

Disassembly:
mov ecx, dword [0x42bbcc]
sub esp, 0x38
mov edx, dword [ecx*4 + 0x42b980]
push ebx
test edx, edx
push esi
je 0x40dc9a
mov esi, dword [ecx*4 + 0x42b8c0]
xor eax, eax
test esi, esi
jbe 0x40d9b4
mov bl, byte [eax + edx]
mov cl, al
add cl, 0x41
xor bl, cl
mov byte [eax + edx], bl
mov ecx, dword [0x42bbcc]
inc eax
cmp eax, dword [ecx*4 + 0x42b8c0]
jb 0x40d997
xor eax, eax
mov ax, word [edx]
add edx, 2
test eax, eax
jbe 0x40dc9a
push ebp
push edi
mov dword [esp + 0x28], eax
jmp 0x40d9d0
mov edx, dword [esp + 0x2c]
mov esi, dword [edx]
mov bl, byte [edx + 4]
add edx, 4
or ecx, 0xffffffff
inc edx
xor eax, eax
mov edi, edx
mov dword [esp + 0x18], edx
repne scasb al, byte es:[edi]
not ecx
dec ecx
lea edx, [edx + ecx + 1]
or ecx, 0xffffffff
mov edi, edx
mov dword [esp + 0x20], edx
repne scasb al, byte es:[edi]
not ecx
dec ecx
lea edx, [edx + ecx + 1]
or ecx, 0xffffffff
mov edi, edx
mov ebp, edx
repne scasb al, byte es:[edi]
not ecx
dec ecx
cmp esi, 0x14
lea edx, [edx + ecx + 1]
mov dword [esp + 0x2c], edx
jb 0x40da23
mov eax, dword [0x426048]
mov dword [esp + 0x1c], eax
jmp 0x40da2e
mov eax, dword [esi*4 + 0x426044]
mov dword [esp + 0x1c], eax
test bl, 4
je 0x40daa3
mov esi, dword [esp + 0x20]
test esi, esi
je 0x40da75
cmp byte [esi], 0
je 0x40da75
mov edx, dword [esp + 0x18]
lea ecx, [esp + 0x10]
push ecx
push edx
push eax
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyA]
test eax, eax
jne 0x40dc89
mov eax, dword [esp + 0x10]
push esi
push eax
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueA]
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
jmp 0x40dc89
mov ecx, dword [0x42bb6c]
test ecx, ecx
je 0x40da92
mov edx, dword [esp + 0x18]
push edx
push eax
call fcn.0040d880
add esp, 8
jmp 0x40dc89
mov ecx, dword [esp + 0x18]
push ecx
push eax
call dword [sym.imp.ADVAPI32.dll_RegDeleteKeyA]
jmp 0x40dc89
test bl, 1
je 0x40db37
mov ecx, dword [esp + 0x18]
lea edx, [esp + 0x10]
push edx
push 0x20019
push 0
push ecx
push eax
mov dword [esp + 0x44], 0
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
test eax, eax
jne 0x40db1e
test bl, 2
mov dword [esp + 0x14], 1
mov dword [esp + 0x24], 0x14
je 0x40daf2
mov eax, 4
mov dword [esp + 0x14], eax
mov dword [esp + 0x24], eax
lea edx, [esp + 0x24]
lea eax, [esp + 0x30]
push edx
mov edx, dword [esp + 0x24]
lea ecx, [esp + 0x18]
push eax
mov eax, dword [esp + 0x18]
push ecx
push 0
push edx
push eax
call dword [sym.imp.ADVAPI32.dll_RegQueryValueExA]
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
test bl, 2
je 0x40db2b
mov eax, dword [esp + 0x30]
test eax, eax
jmp 0x40db31
mov al, byte [esp + 0x30]
test al, al
jne 0x40dc89
push 0xffdc
push ebp
push 0
call fcn.0040d550
mov esi, eax
add esp, 0xc
lea eax, [esi + esi + 1]
cmp eax, 4
ja 0x40db57
mov eax, 4
push eax
call fcn.0041ac70
lea edx, [esi + 1]
mov dword [esp + 0x18], eax
push edx
push ebp
push eax
call fcn.0040d550
add esp, 0x10
mov edi, 1
test bl, 2
je 0x40db94
mov ebx, dword [esp + 0x14]
push ebx
call fcn.0041b36d
mov esi, 4
add esp, 4
mov dword [ebx], eax
mov edi, esi
jmp 0x40dc41
mov eax, dword [esp + 0x14]
push 5
push str.:hex:
push eax
call fcn.0041b2c0
add esp, 0xc
test eax, eax
jne 0x40dc3d
mov ebp, dword [esp + 0x14]
mov esi, ebp
mov al, byte [ebp + 5]
lea edi, [ebp + 5]
test al, al
je 0x40dc36
movsx ecx, al
push ecx
xor bl, bl
call fcn.0041b1ee
add esp, 4
inc edi
cmp al, 0x30
jl 0x40dbdb
cmp al, 0x39
jg 0x40dbdb
sub al, 0x30
jmp 0x40dbe5
cmp al, 0x41
jl 0x40dbe7
cmp al, 0x46
jg 0x40dbe7
sub al, 0x37
mov bl, al
mov al, byte [edi]
test al, al
je 0x40dc20
cmp al, 0x2c
je 0x40dc20
movsx edx, al
push edx
call fcn.0041b1ee
add esp, 4
inc edi
cmp al, 0x30
jl 0x40dc10
cmp al, 0x39
jg 0x40dc10
sub bl, 3
shl bl, 4
add bl, al
jmp 0x40dc20
cmp al, 0x41
jl 0x40dc20
cmp al, 0x46
jg 0x40dc20
shl bl, 4
add bl, al
sub bl, 0x37
mov byte [esi], bl
inc esi
mov al, byte [edi]
cmp al, 0x20
je 0x40dc2d
cmp al, 0x2c
jne 0x40dc30
inc edi
jmp 0x40dc23
mov al, byte [edi]
test al, al
jne 0x40dbc0
mov edi, 3
sub esi, ebp
mov ebx, dword [esp + 0x14]
mov ecx, dword [esp + 0x18]
mov edx, dword [esp + 0x1c]
lea eax, [esp + 0x10]
push eax
push ecx
push edx
call dword [sym.imp.ADVAPI32.dll_RegCreateKeyA]
test eax, eax
jne 0x40dc80
cmp edi, 1
jne 0x40dc60
inc esi
mov eax, dword [esp + 0x20]
mov ecx, dword [esp + 0x10]
push esi
push ebx
push edi
push 0
push eax
push ecx
call dword [sym.imp.ADVAPI32.dll_RegSetValueExA]
mov edx, dword [esp + 0x10]
push edx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
push ebx
call fcn.0041add3
add esp, 4
mov eax, dword [esp + 0x28]
dec eax
mov dword [esp + 0x28], eax
jne 0x40d9cc
pop edi
pop ebp
pop esi
pop ebx
add esp, 0x38
ret