Function at 0x587740
Capabilities:
Encode data using xor

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x1c
mov edx, dword [ebp + 0x14]
xor ecx, ecx
push ebx
push esi
mov esi, dword [ebp + 8]
mov eax, dword [esi + 0x170]
mov ebx, dword [esi + 0x160]
mov dword [ebp - 0xc], eax
mov eax, dword [esi + 0x174]
mov dword [ebp - 8], eax
mov eax, dword [esi + 0x164]
mov dword [ebp - 0x1c], eax
mov eax, edx
add eax, dword [esi + 0x38]
mov dword [ebp - 0x18], ebx
adc ecx, dword [esi + 0x3c]
cmp ecx, 0xf
ja 0x5879af
jb 0x587790
cmp eax, 0xffffffe0
ja 0x5879af
cmp dword [esi + 0x16c], 0
mov dword [esi + 0x38], eax
mov dword [esi + 0x3c], ecx
je 0x5877b9
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call ebx
mov edx, dword [ebp + 0x14]
add esp, 8
mov dword [esi + 0x16c], 0
mov eax, dword [esi + 0xc]
mov ecx, dword [esi + 0x168]
mov ebx, dword [ebp + 0x10]
mov dword [ebp - 0x10], ecx
bswap eax
mov dword [ebp - 4], eax
push edi
mov edi, dword [ebp + 0xc]
test ecx, ecx
je 0x58780c
test edx, edx
je 0x5877f6
mov al, byte [ecx + esi + 0x10]
dec edx
xor al, byte [edi]
inc edi
mov byte [ebx], al
inc ebx
xor byte [ecx + esi + 0x40], al
inc ecx
and ecx, 0xf
mov dword [ebp + 0x14], edx
mov dword [ebp - 0x10], ecx
jne 0x5877d5
jmp 0x5877fe
test ecx, ecx
jne 0x58798e
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call dword [ebp - 0x18]
add esp, 8
mov ecx, dword [ebp + 0x14]
cmp ecx, 0xc00
jb 0x5878a9
mov eax, 0xaaaaaaab
mul ecx
shr edx, 0xb
mov dword [ebp - 0x18], edx
jmp 0x587830
mov dword [ebp - 0x14], 0xc0
push dword [ebp - 8]
lea eax, [esi + 0x10]
push eax
push esi
call dword [ebp - 0xc]
mov eax, dword [ebp - 4]
add esp, 0xc
inc eax
mov dword [ebp - 4], eax
bswap eax
mov dword [esi + 0xc], eax
mov eax, dword [esi + 0x10]
xor eax, dword [edi]
mov dword [ebx], eax
mov eax, dword [edi + 4]
xor eax, dword [esi + 0x14]
mov dword [ebx + 4], eax
mov eax, dword [edi + 8]
xor eax, dword [esi + 0x18]
mov dword [ebx + 8], eax
mov eax, dword [edi + 0xc]
add edi, 0x10
xor eax, dword [esi + 0x1c]
mov dword [ebx + 0xc], eax
add ebx, 0x10
dec dword [ebp - 0x14]
jne 0x587837
push 0xc00
lea eax, [ebx - 0xc00]
push eax
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call dword [ebp - 0x1c]
mov ecx, dword [ebp + 0x14]
add esp, 0x10
sub ecx, 0xc00
dec dword [ebp - 0x18]
mov dword [ebp + 0x14], ecx
jne 0x587830
mov edx, ecx
and edx, 0xfffffff0
mov dword [ebp - 0x14], edx
je 0x587926
cmp ecx, 0x10
jb 0x58790f
shr ecx, 4
lea eax, [esi + 0x10]
mov dword [ebp - 0x18], ecx
push dword [ebp - 8]
push eax
push esi
call dword [ebp - 0xc]
mov eax, dword [ebp - 4]
add esp, 0xc
inc eax
sub dword [ebp + 0x14], 0x10
mov dword [ebp - 4], eax
bswap eax
mov dword [esi + 0xc], eax
mov eax, dword [esi + 0x10]
xor eax, dword [edi]
mov dword [ebx], eax
mov eax, dword [edi + 4]
xor eax, dword [esi + 0x14]
mov dword [ebx + 4], eax
mov eax, dword [edi + 8]
xor eax, dword [esi + 0x18]
mov dword [ebx + 8], eax
mov eax, dword [edi + 0xc]
add edi, 0x10
xor eax, dword [esi + 0x1c]
mov dword [ebx + 0xc], eax
add ebx, 0x10
dec dword [ebp - 0x18]
lea eax, [esi + 0x10]
jne 0x5878c1
mov edx, dword [ebp - 0x14]
push edx
mov eax, ebx
sub eax, edx
push eax
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call dword [ebp - 0x1c]
mov ecx, dword [ebp + 0x14]
add esp, 0x10
test ecx, ecx
je 0x58799d
push dword [ebp - 8]
lea eax, [esi + 0x10]
push eax
push esi
call dword [ebp - 0xc]
mov eax, dword [ebp - 4]
add esp, 0xc
mov edx, dword [ebp - 0x10]
inc eax
bswap eax
mov dword [esi + 0xc], eax
sub edi, ebx
lea eax, [edx + ebx]
mov ebx, dword [ebp + 0x14]
mov dword [ebp - 0x18], eax
lea eax, [esi + 0x40]
mov esi, dword [ebp - 0x18]
mov dword [ebp - 0x1c], eax
jmp 0x587960
movzx ecx, byte [eax + edx - 0x30]
lea esi, [esi + 1]
movzx eax, byte [edi + esi - 1]
xor ecx, eax
mov eax, dword [ebp - 0x1c]
mov byte [esi - 1], cl
xor byte [eax + edx], cl
inc edx
dec ebx
jne 0x587960
mov esi, dword [ebp + 8]
xor eax, eax
pop edi
mov dword [esi + 0x168], edx
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
pop edi
mov dword [esi + 0x168], ecx
xor eax, eax
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
mov edx, dword [ebp - 0x10]
xor eax, eax
pop edi
mov dword [esi + 0x168], edx
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
pop esi
or eax, 0xffffffff
pop ebx
mov esp, ebp
pop ebp
ret