Function at 0x40c290
Capabilities:
Delete registry key
Delete registry value
Encode data using xor
Query or enumerate registry value
Set registry value

Disassembly:
mov ecx, dword [0x429ae4]
sub esp, 0x38
mov edx, dword [ecx*4 + 0x429898]
push ebx
test edx, edx
push esi
je 0x40c5ad
mov esi, dword [ecx*4 + 0x4297d8]
xor eax, eax
test esi, esi
jbe 0x40c2d4
mov bl, byte [eax + edx]
mov cl, al
add cl, 0x41
xor bl, cl
mov byte [eax + edx], bl
mov ecx, dword [0x429ae4]
inc eax
cmp eax, dword [ecx*4 + 0x4297d8]
jb 0x40c2b7
xor eax, eax
mov ax, word [edx]
add edx, 2
test eax, eax
jbe 0x40c5ad
push ebp
push edi
mov dword [esp + 0x28], eax
jmp 0x40c2f0
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 0x40c343
mov eax, dword [0x424274]
mov dword [esp + 0x1c], eax
jmp 0x40c34e
mov eax, dword [esi*4 + 0x424270]
mov dword [esp + 0x1c], eax
test bl, 4
je 0x40c3c3
mov esi, dword [esp + 0x20]
test esi, esi
je 0x40c395
cmp byte [esi], 0
je 0x40c395
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 0x40c59c
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 0x40c59c
mov ecx, dword [0x429a84]
test ecx, ecx
je 0x40c3b2
mov edx, dword [esp + 0x18]
push edx
push eax
call fcn.0040c1a0
add esp, 8
jmp 0x40c59c
mov ecx, dword [esp + 0x18]
push ecx
push eax
call dword [sym.imp.ADVAPI32.dll_RegDeleteKeyA]
jmp 0x40c59c
test bl, 1
je 0x40c457
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 0x40c43e
test bl, 2
mov dword [esp + 0x14], 1
mov dword [esp + 0x24], 0x14
je 0x40c412
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 0x40c44b
mov eax, dword [esp + 0x30]
test eax, eax
jmp 0x40c451
mov al, byte [esp + 0x30]
test al, al
jne 0x40c59c
push 0xffdc
push ebp
push 0
call fcn.0040be70
mov esi, eax
lea edx, [esi + esi + 1]
push edx
call fcn.004190e0
lea ecx, [esi + 1]
mov dword [esp + 0x24], eax
push ecx
push ebp
push eax
call fcn.0040be70
add esp, 0x1c
mov edi, 1
test bl, 2
je 0x40c4a7
mov ebx, dword [esp + 0x14]
push ebx
call fcn.004197dd
mov esi, 4
add esp, 4
mov dword [ebx], eax
mov edi, esi
jmp 0x40c554
mov edx, dword [esp + 0x14]
push 5
push str.:hex:
push edx
call fcn.00419730
add esp, 0xc
test eax, eax
jne 0x40c550
mov ebp, dword [esp + 0x14]
mov esi, ebp
mov al, byte [ebp + 5]
lea edi, [ebp + 5]
test al, al
je 0x40c549
movsx eax, al
push eax
xor bl, bl
call fcn.0041965e
add esp, 4
inc edi
cmp al, 0x30
jl 0x40c4ee
cmp al, 0x39
jg 0x40c4ee
sub al, 0x30
jmp 0x40c4f8
cmp al, 0x41
jl 0x40c4fa
cmp al, 0x46
jg 0x40c4fa
sub al, 0x37
mov bl, al
mov al, byte [edi]
test al, al
je 0x40c533
cmp al, 0x2c
je 0x40c533
movsx ecx, al
push ecx
call fcn.0041965e
add esp, 4
inc edi
cmp al, 0x30
jl 0x40c523
cmp al, 0x39
jg 0x40c523
sub bl, 3
shl bl, 4
add bl, al
jmp 0x40c533
cmp al, 0x41
jl 0x40c533
cmp al, 0x46
jg 0x40c533
shl bl, 4
add bl, al
sub bl, 0x37
mov byte [esi], bl
inc esi
mov al, byte [edi]
cmp al, 0x20
je 0x40c540
cmp al, 0x2c
jne 0x40c543
inc edi
jmp 0x40c536
mov al, byte [edi]
test al, al
jne 0x40c4d3
mov edi, 3
sub esi, ebp
mov ebx, dword [esp + 0x14]
mov eax, dword [esp + 0x18]
mov ecx, dword [esp + 0x1c]
lea edx, [esp + 0x10]
push edx
push eax
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCreateKeyA]
test eax, eax
jne 0x40c593
cmp edi, 1
jne 0x40c573
inc esi
mov edx, dword [esp + 0x20]
mov eax, dword [esp + 0x10]
push esi
push ebx
push edi
push 0
push edx
push eax
call dword [sym.imp.ADVAPI32.dll_RegSetValueExA]
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
push ebx
call fcn.00419243
add esp, 4
mov eax, dword [esp + 0x28]
dec eax
mov dword [esp + 0x28], eax
jne 0x40c2ec
pop edi
pop ebp
pop esi
pop ebx
add esp, 0x38
ret