Function at 0x520390
Capabilities:
Encode data using xor

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x1c
mov eax, dword [ebp + 0xc]
push edi
mov edi, ecx
mov dword [ebp - 0x1c], edi
test eax, eax
je 0x5205eb
mov edx, dword [ebp + 8]
push ebx
push esi
nop dword [eax]
mov ecx, dword [edi + 0x168]
dec eax
mov dword [ebp + 0xc], eax
mov al, byte [edx]
inc edx
mov dword [ebp + 8], edx
mov byte [edi + ecx + 0x28], al
inc dword [edi + 0x168]
cmp dword [edi + 0x168], 0x40
jb 0x5205d0
lea esi, [edi + 0x28]
mov edi, 4
mov ebx, esi
mov ecx, dword [ebx]
lea ebx, [ebx + 0x10]
mov edx, ecx
mov eax, ecx
shr eax, 0x10
and edx, 0xff0000
or edx, eax
mov eax, ecx
shl eax, 0x10
and ecx, 0xff00
or eax, ecx
shr edx, 8
shl eax, 8
or edx, eax
mov dword [ebx - 0x10], edx
mov ecx, dword [ebx - 0xc]
mov edx, ecx
and edx, 0xff0000
mov eax, ecx
shr eax, 0x10
or edx, eax
mov eax, ecx
shl eax, 0x10
and ecx, 0xff00
or eax, ecx
shr edx, 8
shl eax, 8
or edx, eax
mov dword [ebx - 0xc], edx
mov ecx, dword [ebx - 8]
mov edx, ecx
and edx, 0xff0000
mov eax, ecx
shr eax, 0x10
or edx, eax
mov eax, ecx
shl eax, 0x10
and ecx, 0xff00
or eax, ecx
shr edx, 8
shl eax, 8
or edx, eax
mov dword [ebx - 8], edx
mov ecx, dword [ebx - 4]
mov edx, ecx
and edx, 0xff0000
mov eax, ecx
shr eax, 0x10
or edx, eax
mov eax, ecx
shl eax, 0x10
and ecx, 0xff00
or eax, ecx
shr edx, 8
shl eax, 8
or edx, eax
mov dword [ebx - 4], edx
sub edi, 1
jne 0x5203e1
lea ecx, [edi + 0x40]
mov edi, dword [ebp - 0x1c]
nop word [eax + eax]
mov eax, dword [esi + 0x34]
lea esi, [esi + 4]
xor eax, dword [esi + 0x1c]
xor eax, dword [esi + 4]
xor eax, dword [esi - 4]
rol eax, 1
mov dword [esi + 0x3c], eax
sub ecx, 1
jne 0x5204a0
mov eax, dword [edi + 0x14]
xor edx, edx
mov dword [edi], eax
mov eax, dword [edi + 0x18]
mov dword [edi + 4], eax
mov eax, dword [edi + 0x1c]
mov ebx, dword [edi + 4]
mov dword [edi + 8], eax
mov eax, dword [edi + 0x20]
mov esi, dword [edi + 8]
mov dword [edi + 0xc], eax
mov eax, dword [edi + 0x24]
mov ecx, dword [edi + 0xc]
mov dword [ebp - 0x10], eax
mov dword [edi + 0x10], eax
mov dword [ebp - 0x18], edx
mov dword [ebp - 0x14], ebx
mov dword [ebp - 0xc], ecx
mov dword [ebp - 8], 0x28
mov eax, dword [edi]
mov dword [ebp - 4], eax
cmp edx, 0x14
jae 0x52050c
mov eax, ebx
not eax
and eax, ecx
mov ecx, ebx
and ecx, esi
or eax, ecx
jmp 0x52052b
cmp edx, 0x28
jb 0x520525
cmp edx, 0x3c
jae 0x520525
mov eax, esi
or eax, ecx
mov ecx, esi
and ecx, dword [ebp - 0xc]
and eax, ebx
or eax, ecx
jmp 0x52052b
mov eax, ebx
xor eax, esi
xor eax, ecx
cmp edx, 0x14
jae 0x520537
mov ecx, 0x5a827999
jmp 0x520554
cmp edx, 0x28
jae 0x520543
mov ecx, 0x6ed9eba1
jmp 0x520554
cmp edx, 0x3c
sbb ecx, ecx
and ecx, 0xc4b8fb06
add ecx, 0xca62c1d6
mov edx, dword [ebp - 8]
mov ebx, dword [ebp - 4]
add dword [ebp - 8], 4
rol ebx, 5
add ebx, dword [edx + edi]
add ebx, dword [ebp - 0x10]
mov edx, dword [ebp - 0x18]
add ebx, ecx
mov dword [ebp - 4], ebx
mov ecx, esi
add dword [ebp - 4], eax
inc edx
mov eax, dword [ebp - 0xc]
mov ebx, dword [edi]
mov dword [ebp - 0xc], esi
mov dword [edi + 0xc], esi
mov esi, dword [ebp - 0x14]
ror esi, 2
cmp dword [ebp - 8], 0x168
mov dword [ebp - 0x10], eax
mov dword [edi + 0x10], eax
mov eax, dword [ebp - 4]
mov dword [edi + 8], esi
mov dword [ebp - 0x14], ebx
mov dword [edi + 4], ebx
mov dword [edi], eax
mov dword [ebp - 0x18], edx
jb 0x5204f4
add dword [edi + 0x14], eax
mov eax, ebx
add dword [edi + 0x18], eax
mov eax, esi
add dword [edi + 0x1c], eax
mov eax, dword [edi + 0xc]
add dword [edi + 0x20], eax
mov eax, dword [edi + 0x10]
add dword [edi + 0x24], eax
mov edx, dword [ebp + 8]
mov dword [edi + 0x168], 0
add dword [edi + 0x170], 8
mov eax, dword [ebp + 0xc]
adc dword [edi + 0x174], 0
test eax, eax
jne 0x5203b0
pop esi
pop ebx
pop edi
mov esp, ebp
pop ebp
ret 8