Function at 0x403df0
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 0x404150
fld st(0)
fstp xword [esp + 0x50]
movzx edx, word [esp + 0x58]
test dx, dx
js 0x404010
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x404340
and dx, 0x7fff
fstp xword [esp + 0x40]
mov edi, dword [esp + 0x40]
mov ebp, dword [esp + 0x44]
mov word [esp + 0x30], dx
jne 0x404020
mov edx, ebp
or edx, edi
jne 0x4041e8
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x404048
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 0x4043d8
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 0x404302
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 0x4043ef
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 0x403f00
movsx ebp, si
mov esi, dword [esp + 0x30]
mov eax, dword [esp + 0x34]
cmp eax, edi
jle 0x404330
sub eax, edi
test dword [esp + 0x2c], 0x600
je 0x404390
mov dword [ebx + 8], eax
test byte [esp + 0x2c], 0x80
jne 0x40431b
test dword [esp + 0x2c], 0x100
jne 0x404360
test byte [esp + 0x2c], 0x40
jne 0x404378
mov edx, ebx
mov eax, 0x30
call fcn.00402710
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.00402710
mov eax, dword [ebx + 8]
test eax, eax
jle 0x403fb9
test byte [ebx + 5], 2
je 0x403fb9
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea esi, [esi]
mov edx, ebx
mov eax, 0x30
call fcn.00402710
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x403fa0
mov edi, dword [esp + 0x28]
cmp esi, dword [esp + 0x28]
ja 0x403fea
jmp 0x40417c
movzx eax, word [ebx + 0x1c]
mov word [esp + 0x68], ax
test ax, ax
jne 0x4042c8
cmp esi, edi
je 0x40417c
movsx eax, byte [esi - 1]
sub esi, 1
cmp eax, 0x2e
je 0x404238
cmp eax, 0x2c
je 0x403fd0
mov edx, ebx
call fcn.00402710
jmp 0x403fe2
or dword [ebx + 4], 0x80
jmp 0x403e2a
mov eax, dword [ebx + 0xc]
sub word [esp + 0x30], 0x3fff
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x40404e
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x2c], eax
jne 0x4040b8
jmp 0x403e7a
shld ebp, edi, 1
add edi, edi
test ebp, ebp
jns 0x404048
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 0x404228
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 0x40410d
xor ecx, ecx
cmp esi, dword [esp + 0x28]
ja 0x4040fb
mov eax, dword [esp + 0x24]
mov ebx, dword [eax + 0xc]
test ebx, ebx
js 0x404103
lea eax, [ecx + 0x30]
mov byte [esi], al
add esi, 1
mov ecx, ebp
or ecx, edi
je 0x4042e0
mov ecx, edi
mov eax, edi
mov ebx, ebp
and ecx, 0xfffffff0
and eax, 0xf
or ebx, ecx
je 0x404248
mov ebx, dword [esp + 0x24]
shrd edi, ebp, 4
shr ebp, 4
mov ecx, dword [ebx + 0xc]
test ecx, ecx
jle 0x404139
sub ecx, 1
mov dword [ebx + 0xc], ecx
test eax, eax
je 0x4040e8
mov ecx, eax
cmp eax, 9
jbe 0x4040fb
add eax, 0x37
or al, byte [esp + 0x34]
jmp 0x4040fe
fstp st(0)
add esp, 0x9c
mov ecx, ebx
mov edx, 0x40f403
xor eax, eax
pop ebx
pop esi
pop edi
pop ebp
jmp fcn.00402a70
mov edx, ebx
mov eax, 0x30
call fcn.00402710
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
mov dword [ebx + 0xc], edx
test eax, eax
jg 0x404170
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.00402710
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.004030b0
add esp, 0x9c
pop ebx
pop esi
pop edi
pop ebp
ret
test ebp, ebp
js 0x4043f9
mov eax, 0xffffc001
lea esi, [esi]
shld ebp, edi, 1
mov edx, eax
add edi, edi
sub eax, 1
test ebp, ebp
jns 0x4041f8
mov word [esp + 0x30], dx
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
ja 0x4040b1
jmp 0x404052
add word [esp + 0x30], 1
jmp 0x404091
mov eax, ebx
call fcn.004034d0
jmp 0x403fe2
cmp esi, dword [esp + 0x28]
ja 0x404268
mov ebx, dword [esp + 0x3c]
test ebx, ebx
jne 0x404268
mov ecx, dword [esp + 0x24]
mov ecx, dword [ecx + 0xc]
test ecx, ecx
jle 0x40426e
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 0x4043c8
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 0x4042a0
mov eax, esi
xor edi, edi
mov esi, dword [esp + 0x30]
xor ebp, ebp
jmp 0x404139
mov ecx, ebx
mov edx, 1
lea eax, [esp + 0x68]
call fcn.00402770
jmp 0x403fe2
mov word [esp + 0x30], dx
mov ebx, dword [esp + 0x24]
cmp esi, dword [esp + 0x28]
je 0x403e82
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jg 0x403eab
movsx eax, word [esp + 0x30]
mov ebp, 2
mov dword [esp + 0x24], eax
test byte [esp + 0x2c], 0x80
je 0x403f4e
mov edx, ebx
mov eax, 0x2d
call fcn.00402710
jmp 0x403f67
mov dword [ebx + 8], 0xffffffff
jmp 0x403f43
fstp st(0)
add esp, 0x9c
mov eax, edx
mov ecx, ebx
mov edx, 0x40f407
pop ebx
and eax, 0x8000
pop esi
pop edi
pop ebp
jmp fcn.00402a70
mov edx, ebx
mov eax, 0x2b
call fcn.00402710
jmp 0x403f67
mov edx, ebx
mov eax, 0x20
call fcn.00402710
jmp 0x403f67
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jle 0x403f43
nop
mov edx, ebx
mov eax, 0x20
call fcn.00402710
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x4043a0
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
jmp 0x403f43
xor edi, edi
xor ebp, ebp
jmp 0x404139
mov eax, dword [esp + 0x28]
test dword [esp + 0x2c], 0x800
je 0x403e96
jmp 0x403e8d
mov ebp, 2
jmp 0x403f24
mov eax, 0xffffc002
mov word [esp + 0x30], ax
jmp 0x40420c