Function at 0x543bf0
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x7c
fld xword [esp + 0x90]
fld st(0)
fstp xword [esp + 0x48]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x5440e1
fld st(0)
fstp xword [esp + 0x30]
movzx edx, word [esp + 0x38]
test dx, dx
jns 0x543c30
or dword [ebx + 4], 0x80
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x544111
and dx, 0x7fff
mov word [esp + 0x18], dx
jne 0x543cb0
fstp xword [esp + 0x20]
mov edi, dword [esp + 0x24]
mov esi, dword [esp + 0x20]
mov edx, edi
mov dword [esp], esi
mov dword [esp + 4], edi
or edx, esi
je 0x543e00
test edi, edi
js 0x5441da
mov eax, 0xffffc001
lea esi, [esi]
shld edi, esi, 1
mov edx, eax
add esi, esi
sub eax, 1
test edi, edi
jns 0x543c80
mov word [esp + 0x18], dx
mov dword [esp], esi
mov dword [esp + 4], edi
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
ja 0x543d52
jmp 0x543cf1
fstp st(0)
mov ebp, dword [ebx + 0xc]
mov esi, dword [esp + 0x48]
mov edi, dword [esp + 0x4c]
sub word [esp + 0x18], 0x3fff
cmp ebp, 0xe
mov dword [esp], esi
mov dword [esp + 4], edi
ja 0x543e20
test edi, edi
js 0x543cf1
nop
lea esi, [esi]
shld edi, esi, 1
add esi, esi
test edi, edi
jns 0x543ce0
mov dword [esp], esi
mov dword [esp + 4], edi
mov ecx, 0xe
mov eax, 4
xor edx, edx
sub ecx, ebp
xor esi, esi
mov edi, dword [esp + 4]
shl ecx, 2
shld edx, eax, cl
shl eax, cl
test cl, 0x20
cmovne edx, eax
cmovne eax, esi
mov esi, dword [esp]
shrd esi, edi, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x544130
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
xor eax, eax
sub ecx, ebp
shl ecx, 2
shrd esi, edi, cl
shr edi, cl
test cl, 0x20
cmovne esi, edi
cmovne edi, eax
mov dword [esp], esi
mov dword [esp + 4], edi
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
lea eax, [esp + 0x58]
mov esi, dword [esp]
mov dword [esp], ebx
mov dword [esp + 0x10], eax
mov ebp, eax
mov eax, dword [esp + 0x14]
mov edi, eax
and eax, 0x20
and edi, 0x800
mov byte [esp + 0x1b], al
mov dword [esp + 0x1c], edi
mov edi, dword [esp + 4]
jmp 0x543db5
xor eax, eax
cmp ebp, dword [esp + 0x10]
ja 0x543da2
mov ebx, dword [esp]
mov ecx, dword [ebx + 0xc]
test ecx, ecx
js 0x543dab
lea ecx, [eax + 0x30]
mov byte [ebp], cl
add ebp, 1
mov edx, edi
or edx, esi
je 0x544090
mov ecx, esi
mov dword [esp + 0xc], 0
and ecx, 0xf
mov ebx, ecx
mov dword [esp + 8], ecx
xor ebx, esi
mov eax, ebx
or eax, edi
je 0x544000
mov edx, dword [esp]
shrd esi, edi, 4
shr edi, 4
mov eax, dword [edx + 0xc]
test eax, eax
jle 0x543deb
sub eax, 1
mov dword [edx + 0xc], eax
test ecx, ecx
je 0x543d90
cmp ecx, 9
mov eax, ecx
jbe 0x543da2
add ecx, 0x37
or cl, byte [esp + 0x1b]
jmp 0x543da5
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
ja 0x5441a0
mov esi, dword [esp]
mov edi, dword [esp + 4]
jmp 0x543ce0
mov ebp, dword [esp + 4]
mov edi, dword [esp]
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x14], eax
jne 0x543d59
lea eax, [esp + 0x58]
mov dword [esp + 0x10], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x5441b0
lea eax, [esp + 0x59]
mov byte [esp + 0x58], 0x2e
lea ebp, [eax + 1]
mov byte [eax], 0x30
mov eax, dword [ebx + 8]
test eax, eax
mov dword [esp + 8], eax
jle 0x5440ac
mov eax, ebp
sub eax, dword [esp + 0x10]
mov edx, dword [ebx + 0xc]
movsx esi, word [esp + 0x18]
test edx, edx
lea ecx, [eax + edx]
mov dword [esp], esi
cmovg eax, ecx
xor edx, edx
test dword [esp + 0x14], 0x1c0
mov ecx, 0x66666667
setne dl
lea edi, [eax + edx + 5]
mov eax, esi
imul ecx
mov eax, esi
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x5441d0
mov esi, 2
mov eax, 0x66666667
add edi, 1
add esi, 1
imul ecx
sar ecx, 0x1f
sar edx, 2
sub edx, ecx
mov ecx, edx
jne 0x543eb3
movsx esi, si
mov eax, dword [esp + 8]
cmp eax, edi
jle 0x5440d5
sub eax, edi
test dword [esp + 0x14], 0x600
je 0x544150
mov dword [ebx + 8], eax
test byte [esp + 0x14], 0x80
jne 0x5440c4
test dword [esp + 0x14], 0x100
jne 0x544100
test byte [esp + 0x14], 0x40
jne 0x544185
mov edx, ebx
mov eax, 0x30
call fcn.00542980
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.00542980
mov eax, dword [ebx + 8]
test eax, eax
jle 0x543f5a
test byte [ebx + 5], 2
je 0x543f5a
sub eax, 1
mov dword [ebx + 8], eax
mov edx, ebx
mov eax, 0x30
call fcn.00542980
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 8], edx
jg 0x543f41
cmp ebp, dword [esp + 0x10]
mov edi, dword [esp + 0x10]
ja 0x543f94
jmp 0x543fbe
movzx eax, word [ebx + 0x1c]
test ax, ax
mov word [esp + 0x46], ax
je 0x543f90
lea eax, [esp + 0x46]
mov ecx, ebx
mov edx, 1
call fcn.005429e0
nop
cmp ebp, edi
je 0x543fbe
sub ebp, 1
movsx eax, byte [ebp]
cmp eax, 0x2e
je 0x544080
cmp eax, 0x2c
je 0x543f70
mov edx, ebx
call fcn.00542980
jmp 0x543f90
mov edx, ebx
mov eax, 0x30
call fcn.00542980
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 0xc], edx
jg 0x543fb2
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.00542980
add dword [ebx + 8], esi
mov eax, dword [esp]
mov ecx, ebx
or dword [ebx + 4], 0x1c0
cdq
call fcn.00543200
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
cmp ebp, dword [esp + 0x10]
ja 0x544020
mov eax, dword [esp + 0x1c]
test eax, eax
jne 0x544020
mov eax, dword [esp]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x544027
nop
lea esi, [esi]
mov byte [ebp], 0x2e
add ebp, 1
mov ebx, esi
mov esi, edi
xor ebx, 1
or esi, ebx
je 0x544140
movzx ebx, word [esp + 0x18]
mov dword [esp + 8], ebp
mov eax, ecx
xor edx, edx
mov ebp, ecx
sub ebx, 1
nop
lea esi, [esi]
shrd eax, edx, 1
shr edx, 1
mov esi, ebx
mov edi, eax
mov ecx, edx
lea ebx, [esi - 1]
xor edi, 1
or ecx, edi
jne 0x544050
mov ecx, ebp
mov word [esp + 0x18], si
mov ebp, dword [esp + 8]
xor esi, esi
xor edi, edi
jmp 0x543deb
mov eax, ebx
call fcn.00542cc0
jmp 0x543f90
cmp ebp, dword [esp + 0x10]
mov ebx, dword [esp]
je 0x543e40
mov eax, dword [ebx + 8]
test eax, eax
mov dword [esp + 8], eax
jg 0x543e69
movsx eax, word [esp + 0x18]
test byte [esp + 0x14], 0x80
mov esi, 2
mov dword [esp], eax
je 0x543ef9
mov edx, ebx
mov eax, 0x2d
call fcn.00542980
jmp 0x543f12
mov dword [ebx + 8], 0xffffffff
jmp 0x543eee
fstp st(0)
mov ecx, ebx
mov edx, 0x75fa1e
xor eax, eax
call fcn.00542c20
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
mov edx, ebx
mov eax, 0x2b
call fcn.00542980
jmp 0x543f12
fstp st(0)
mov eax, edx
mov ecx, ebx
mov edx, 0x75fa22
and eax, 0x8000
call fcn.00542c20
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
add word [esp + 0x18], 1
jmp 0x543d31
xor esi, esi
xor edi, edi
jmp 0x543deb
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea edi, [edi]
mov edx, ebx
mov eax, 0x20
call fcn.00542980
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 8], edx
jg 0x544160
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
jmp 0x543eee
mov edx, ebx
mov eax, 0x20
call fcn.00542980
jmp 0x543f12
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
jmp 0x543e38
test dword [esp + 0x14], 0x800
mov eax, dword [esp + 0x10]
je 0x543e54
jmp 0x543e4b
mov esi, 2
jmp 0x543ecf
mov eax, 0xffffc002
mov word [esp + 0x18], ax
jmp 0x543c9b