Function at 0x87c470
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x9c
fld xword [esp + 0xb0]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x87c7d0
fld st(0)
fstp xword [esp + 0x50]
movzx edx, word [esp + 0x58]
test dx, dx
js 0x87c690
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x87c9c0
and dx, 0x7fff
fstp xword [esp + 0x40]
mov edi, dword [esp + 0x40]
mov ebp, dword [esp + 0x44]
mov word [esp + 0x30], dx
jne 0x87c6a0
mov edx, ebp
or edx, edi
jne 0x87c868
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x87c6c8
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x28], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x87ca58
mov byte [esp + 0x78], 0x2e
lea eax, [esp + 0x79]
mov byte [eax], 0x30
lea esi, [eax + 1]
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jle 0x87c982
mov edx, dword [ebx + 0xc]
mov eax, esi
sub eax, dword [esp + 0x28]
movsx edi, word [esp + 0x30]
test edx, edx
lea ecx, [eax + edx]
mov edx, dword [esp + 0x2c]
cmovg eax, ecx
mov ecx, 0x66666667
mov dword [esp + 0x24], edi
and edx, 0x1c0
cmp edx, 1
sbb eax, 0xfffffffa
mov ebp, eax
mov eax, edi
imul ecx
mov eax, edi
mov edi, ebp
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x87ca6f
mov dword [esp + 0x30], esi
lea esi, [esi]
nop
mov eax, 0x66666667
add edi, 1
imul ecx
mov eax, ecx
lea esi, [edi + 2]
sar eax, 0x1f
sub esi, ebp
sar edx, 2
sub edx, eax
mov ecx, edx
jne 0x87c580
movsx ebp, si
mov esi, dword [esp + 0x30]
mov eax, dword [esp + 0x34]
cmp eax, edi
jle 0x87c9b0
sub eax, edi
test dword [esp + 0x2c], 0x600
je 0x87ca10
mov dword [ebx + 8], eax
test byte [esp + 0x2c], 0x80
jne 0x87c99b
test dword [esp + 0x2c], 0x100
jne 0x87c9e0
test byte [esp + 0x2c], 0x40
jne 0x87c9f8
mov edx, ebx
mov eax, 0x30
call fcn.0087ad90
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.0087ad90
mov eax, dword [ebx + 8]
test eax, eax
jle 0x87c639
test byte [ebx + 5], 2
je 0x87c639
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea esi, [esi]
mov edx, ebx
mov eax, 0x30
call fcn.0087ad90
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x87c620
mov edi, dword [esp + 0x28]
cmp esi, dword [esp + 0x28]
ja 0x87c66a
jmp 0x87c7fc
movzx eax, word [ebx + 0x1c]
mov word [esp + 0x68], ax
test ax, ax
jne 0x87c948
cmp esi, edi
je 0x87c7fc
movsx eax, byte [esi - 1]
sub esi, 1
cmp eax, 0x2e
je 0x87c8b8
cmp eax, 0x2c
je 0x87c650
mov edx, ebx
call fcn.0087ad90
jmp 0x87c662
or dword [ebx + 4], 0x80
jmp 0x87c4aa
mov eax, dword [ebx + 0xc]
sub word [esp + 0x30], 0x3fff
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x87c6ce
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x2c], eax
jne 0x87c738
jmp 0x87c4fa
shld ebp, edi, 1
add edi, edi
test ebp, ebp
jns 0x87c6c8
mov ecx, 0xe
sub ecx, dword [esp + 0x24]
mov eax, 4
xor edx, edx
shl ecx, 2
xor esi, esi
shld edx, eax, cl
shl eax, cl
test cl, 0x20
cmovne edx, eax
cmovne eax, esi
mov esi, edi
mov edi, ebp
shrd esi, ebp, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x87c8a8
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
sub ecx, dword [esp + 0x24]
xor ebp, ebp
shl ecx, 2
shrd esi, edi, cl
shr edi, cl
and ecx, 0x20
cmovne esi, edi
cmovne edi, ebp
mov ebp, edi
mov edi, esi
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x24], ebx
mov dword [esp + 0x28], eax
mov esi, eax
mov eax, dword [esp + 0x2c]
mov edx, eax
and eax, 0x20
and edx, 0x800
mov byte [esp + 0x34], al
mov dword [esp + 0x3c], edx
movzx edx, word [esp + 0x30]
jmp 0x87c78d
xor ecx, ecx
cmp esi, dword [esp + 0x28]
ja 0x87c77b
mov eax, dword [esp + 0x24]
mov ebx, dword [eax + 0xc]
test ebx, ebx
js 0x87c783
lea eax, [ecx + 0x30]
mov byte [esi], al
add esi, 1
mov ecx, ebp
or ecx, edi
je 0x87c960
mov ecx, edi
mov eax, edi
mov ebx, ebp
and ecx, 0xfffffff0
and eax, 0xf
or ebx, ecx
je 0x87c8c8
mov ebx, dword [esp + 0x24]
shrd edi, ebp, 4
shr ebp, 4
mov ecx, dword [ebx + 0xc]
test ecx, ecx
jle 0x87c7b9
sub ecx, 1
mov dword [ebx + 0xc], ecx
test eax, eax
je 0x87c768
mov ecx, eax
cmp eax, 9
jbe 0x87c77b
add eax, 0x37
or al, byte [esp + 0x34]
jmp 0x87c77e
fstp st(0)
add esp, 0x9c
mov ecx, ebx
mov edx, 0x88d15f
xor eax, eax
pop ebx
pop esi
pop edi
pop ebp
jmp fcn.0087b0f0
mov edx, ebx
mov eax, 0x30
call fcn.0087ad90
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
mov dword [ebx + 0xc], edx
test eax, eax
jg 0x87c7f0
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.0087ad90
mov eax, dword [esp + 0x24]
add dword [ebx + 8], ebp
or dword [ebx + 4], 0x1c0
cdq
mov dword [esp + 0x68], eax
mov dword [esp + 0x6c], edx
mov ecx, edx
mov dword [esp], eax
mov eax, dword [esp + 0x6c]
sar ecx, 0x1f
mov dword [esp + 0x10], ebx
mov dword [esp + 0x70], ecx
mov dword [esp + 0x74], ecx
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], ecx
call fcn.0087b730
add esp, 0x9c
pop ebx
pop esi
pop edi
pop ebp
ret
test ebp, ebp
js 0x87ca79
mov eax, 0xffffc001
lea esi, [esi]
shld ebp, edi, 1
mov edx, eax
add edi, edi
sub eax, 1
test ebp, ebp
jns 0x87c878
mov word [esp + 0x30], dx
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
ja 0x87c731
jmp 0x87c6d2
add word [esp + 0x30], 1
jmp 0x87c711
mov eax, ebx
call fcn.0087bb50
jmp 0x87c662
cmp esi, dword [esp + 0x28]
ja 0x87c8e8
mov ebx, dword [esp + 0x3c]
test ebx, ebx
jne 0x87c8e8
mov ecx, dword [esp + 0x24]
mov ecx, dword [ecx + 0xc]
test ecx, ecx
jle 0x87c8ee
lea esi, [esi]
mov byte [esi], 0x2e
add esi, 1
mov ecx, edi
xor ecx, 1
mov dword [esp + 0x30], ecx
lea ecx, [edx - 1]
mov word [esp + 0x3a], cx
mov ecx, dword [esp + 0x30]
or ecx, ebp
je 0x87ca48
movzx ecx, word [esp + 0x3a]
mov dword [esp + 0x30], esi
mov esi, eax
lea esi, [esi]
lea esi, [esi]
shrd edi, ebp, 1
shr ebp, 1
mov edx, ecx
mov ebx, edi
mov eax, ebp
lea ecx, [edx - 1]
xor ebx, 1
or eax, ebx
jne 0x87c920
mov eax, esi
xor edi, edi
mov esi, dword [esp + 0x30]
xor ebp, ebp
jmp 0x87c7b9
mov ecx, ebx
mov edx, 1
lea eax, [esp + 0x68]
call fcn.0087adf0
jmp 0x87c662
mov word [esp + 0x30], dx
mov ebx, dword [esp + 0x24]
cmp esi, dword [esp + 0x28]
je 0x87c502
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jg 0x87c52b
movsx eax, word [esp + 0x30]
mov ebp, 2
mov dword [esp + 0x24], eax
test byte [esp + 0x2c], 0x80
je 0x87c5ce
mov edx, ebx
mov eax, 0x2d
call fcn.0087ad90
jmp 0x87c5e7
mov dword [ebx + 8], 0xffffffff
jmp 0x87c5c3
fstp st(0)
add esp, 0x9c
mov eax, edx
mov ecx, ebx
mov edx, 0x88d163
pop ebx
and eax, 0x8000
pop esi
pop edi
pop ebp
jmp fcn.0087b0f0
mov edx, ebx
mov eax, 0x2b
call fcn.0087ad90
jmp 0x87c5e7
mov edx, ebx
mov eax, 0x20
call fcn.0087ad90
jmp 0x87c5e7
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jle 0x87c5c3
nop
mov edx, ebx
mov eax, 0x20
call fcn.0087ad90
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x87ca20
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
jmp 0x87c5c3
xor edi, edi
xor ebp, ebp
jmp 0x87c7b9
mov eax, dword [esp + 0x28]
test dword [esp + 0x2c], 0x800
je 0x87c516
jmp 0x87c50d
mov ebp, 2
jmp 0x87c5a4
mov eax, 0xffffc002
mov word [esp + 0x30], ax
jmp 0x87c88c