Function at 0x587c40
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0xc
call fcn.00425210
mov eax, dword [esp + 0x18]
push ebx
mov ebx, dword [esp + 0x18]
push ebp
mov ebp, dword [esp + 0x18]
mov ecx, dword [eax + 4]
mov edx, dword [ebx + 4]
xor ecx, edx
push esi
lea ebp, [ebp - 1]
shr ebp, 0x1f
dec ebp
and ecx, ebp
mov dword [esp + 0x1c], ebp
xor edx, ecx
mov dword [ebx + 4], edx
xor dword [eax + 4], ecx
mov ecx, dword [esp + 0x28]
movd xmm0, ebp
push edi
pshufd xmm3, xmm0, 0
lea edx, [ecx - 1]
cmp edx, 9
ja case.default.0x587c8c
jmp dword [edx*4 + 0x587eac]
mov ebp, 0xa
lea edx, [ecx - 0xa]
cmp ecx, ebp
jle 0x587db4
cmp edx, 8
jb 0x587d8d
mov edi, dword [eax]
mov esi, dword [ebx]
mov dword [esp + 0x14], esi
mov ebx, esi
lea esi, [edi + 0x28]
mov dword [esp + 0x28], esi
lea esi, [ecx - 1]
lea esi, [edi + esi*4]
lea edi, [ebx + 0x28]
lea ebx, [ebx + ecx*4]
add ebx, 0xfffffffc
cmp dword [esp + 0x28], ebx
mov dword [esp + 0x10], ebx
mov ebx, dword [esp + 0x24]
ja 0x587ce2
cmp esi, edi
jae 0x587d8d
cmp dword [esp + 0x28], eax
ja 0x587cf0
cmp esi, eax
jae 0x587d8d
cmp dword [esp + 0x28], ebx
ja 0x587cfe
cmp esi, ebx
jae 0x587d8d
mov esi, dword [esp + 0x10]
cmp edi, eax
ja 0x587d0e
cmp esi, eax
jae 0x587d8d
cmp edi, ebx
ja 0x587d16
cmp esi, ebx
jae 0x587d8d
and edx, reloc.WS2_32.dll_getsockopt
jns 0x587d23
dec edx
or edx, 0xfffffff8
inc edx
mov edi, dword [esp + 0x14]
mov esi, ecx
sub esi, edx
mov edx, dword [eax]
nop dword [eax]
movups xmm1, xmmword [edi + ebp*4]
movups xmm0, xmmword [edx + ebp*4]
movaps xmm2, xmm1
pxor xmm2, xmm0
pand xmm2, xmm3
movaps xmm0, xmm2
pxor xmm0, xmm1
movups xmmword [edi + ebp*4], xmm0
movups xmm0, xmmword [edx + ebp*4]
pxor xmm2, xmm0
movups xmmword [edx + ebp*4], xmm2
movups xmm1, xmmword [edi + ebp*4 + 0x10]
movups xmm2, xmmword [edx + ebp*4 + 0x10]
pxor xmm2, xmm1
pand xmm2, xmm3
movaps xmm0, xmm2
pxor xmm0, xmm1
movups xmmword [edi + ebp*4 + 0x10], xmm0
movups xmm0, xmmword [edx + ebp*4 + 0x10]
pxor xmm0, xmm2
movups xmmword [edx + ebp*4 + 0x10], xmm0
add ebp, 8
cmp ebp, esi
jl 0x587d30
cmp ebp, ecx
jge 0x587db4
mov ecx, dword [ebx]
mov edx, dword [ecx + ebp*4]
lea esi, [ecx + ebp*4]
mov ecx, dword [eax]
mov edi, dword [ecx + ebp*4]
xor edi, edx
and edi, dword [esp + 0x20]
xor edx, edi
mov dword [esi], edx
mov ecx, dword [eax]
xor dword [ecx + ebp*4], edi
inc ebp
cmp ebp, dword [esp + 0x2c]
jl 0x587d91
mov ebp, dword [esp + 0x20]
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x24]
mov edx, dword [edi + 0x24]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x24], edx
mov ecx, dword [eax]
xor dword [ecx + 0x24], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x20]
mov edx, dword [edi + 0x20]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x20], edx
mov ecx, dword [eax]
xor dword [ecx + 0x20], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x1c]
mov edx, dword [edi + 0x1c]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x1c], edx
mov ecx, dword [eax]
xor dword [ecx + 0x1c], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x18]
mov edx, dword [edi + 0x18]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x18], edx
mov ecx, dword [eax]
xor dword [ecx + 0x18], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x14]
mov edx, dword [edi + 0x14]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x14], edx
mov ecx, dword [eax]
xor dword [ecx + 0x14], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0x10]
mov edx, dword [edi + 0x10]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0x10], edx
mov ecx, dword [eax]
xor dword [ecx + 0x10], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 0xc]
mov edx, dword [edi + 0xc]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 0xc], edx
mov ecx, dword [eax]
xor dword [ecx + 0xc], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 8]
mov edx, dword [edi + 8]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 8], edx
mov ecx, dword [eax]
xor dword [ecx + 8], esi
mov ecx, dword [eax]
mov edi, dword [ebx]
mov esi, dword [ecx + 4]
mov edx, dword [edi + 4]
xor esi, edx
and esi, ebp
xor edx, esi
mov dword [edi + 4], edx
mov ecx, dword [eax]
xor dword [ecx + 4], esi
mov esi, dword [ebx]
mov ecx, dword [eax]
pop edi
mov edx, dword [esi]
mov ecx, dword [ecx]
xor ecx, edx
and ecx, ebp
xor edx, ecx
mov dword [esi], edx
mov eax, dword [eax]
pop esi
pop ebp
pop ebx
xor dword [eax], ecx
add esp, 0xc
ret