Function at 0x4d4100
Capabilities:
Encode data using xor

Disassembly:
mov edx, dword [esp + 0xc]
push ebx
mov ebx, dword [esp + 8]
test ebx, ebx
je 0x4d45e5
test edx, edx
je 0x4d45e5
push edi
mov edi, dword [esp + 0x10]
cmp edi, 0x80
je 0x4d4146
cmp edi, 0xc0
je 0x4d413e
cmp edi, 0x100
je 0x4d413e
pop edi
mov eax, 0xfffffffe
pop ebx
ret
cmp edi, 0x80
jne 0x4d4152
mov dword [edx + 0xf0], 0xa
jmp 0x4d416a
xor eax, eax
cmp edi, 0xc0
setne al
lea eax, [eax*2 + 0xc]
mov dword [edx + 0xf0], eax
mov eax, dword [ebx]
push ebp
mov ebp, eax
rol eax, 8
and eax, 0xff00ff
ror ebp, 8
and ebp, 0xff00ff00
or ebp, eax
mov dword [edx], ebp
mov ecx, dword [ebx + 4]
mov eax, ecx
ror eax, 8
rol ecx, 8
and eax, 0xff00ff00
and ecx, 0xff00ff
or eax, ecx
mov dword [edx + 4], eax
mov ecx, dword [ebx + 8]
mov eax, ecx
push esi
lea esi, [edx + 4]
ror eax, 8
rol ecx, 8
and eax, 0xff00ff00
and ecx, 0xff00ff
or eax, ecx
mov dword [edx + 8], eax
mov eax, dword [ebx + 0xc]
mov ecx, eax
ror ecx, 8
rol eax, 8
and ecx, 0xff00ff00
and eax, 0xff00ff
or ecx, eax
mov dword [esp + 0x14], ecx
mov dword [edx + 0xc], ecx
cmp edi, 0x80
jne 0x4d42e2
mov ebx, dword [esp + 0x14]
mov eax, ecx
shr eax, 0x10
mov edi, 0x5981c4
movzx eax, al
mov ecx, dword [eax*4 + 0x5968c0]
mov eax, ebx
shr eax, 8
xor ecx, 0x1000000
movzx eax, al
and ecx, 0xff000000
mov eax, dword [eax*4 + 0x596cc0]
and eax, 0xff0000
xor ecx, eax
mov eax, ebx
shr eax, 0x18
movzx eax, byte [eax*4 + 0x5964c0]
xor ecx, eax
movzx eax, bl
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor ecx, eax
mov eax, dword [esi]
xor ecx, ebp
xor eax, ecx
mov dword [edx + 0x10], ecx
mov ecx, dword [edx + 8]
xor ecx, eax
mov dword [edx + 0x14], eax
mov dword [edx + 0x18], ecx
xor ecx, ebx
mov dword [edx + 0x1c], ecx
nop dword [eax]
mov ecx, dword [esi + 0x18]
lea esi, [esi + 0x10]
mov eax, ecx
shr eax, 8
movzx eax, al
mov edx, dword [eax*4 + 0x596cc0]
mov eax, ecx
shr eax, 0x10
and edx, 0xff0000
movzx eax, al
mov eax, dword [eax*4 + 0x5968c0]
and eax, 0xff000000
xor edx, eax
mov eax, ecx
shr eax, 0x18
movzx eax, byte [eax*4 + 0x5964c0]
xor edx, eax
movzx eax, cl
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor edx, eax
xor edx, dword [esi - 4]
xor edx, dword [edi]
add edi, 4
mov dword [esi + 0xc], edx
mov eax, dword [esi]
xor eax, edx
mov dword [esi + 0x10], eax
mov ecx, dword [esi + 4]
xor ecx, eax
mov dword [esi + 0x14], ecx
mov eax, dword [esi + 8]
xor eax, ecx
mov dword [esi + 0x18], eax
cmp edi, 0x5981e8
jne 0x4d4260
pop esi
pop ebp
pop edi
xor eax, eax
pop ebx
ret
mov ecx, dword [ebx + 0x10]
mov eax, ecx
ror eax, 8
rol ecx, 8
and eax, 0xff00ff00
and ecx, 0xff00ff
or eax, ecx
mov dword [edx + 0x10], eax
mov eax, dword [ebx + 0x14]
mov ecx, eax
ror ecx, 8
rol eax, 8
and ecx, 0xff00ff00
and eax, 0xff00ff
or ecx, eax
mov dword [esp + 0x14], ecx
mov dword [edx + 0x14], ecx
cmp edi, 0xc0
jne 0x4d443b
mov ebx, dword [esp + 0x14]
mov eax, ecx
shr eax, 0x10
mov edi, 0x5981c4
movzx eax, al
mov ecx, dword [eax*4 + 0x5968c0]
mov eax, ebx
shr eax, 8
xor ecx, 0x1000000
movzx eax, al
and ecx, 0xff000000
mov eax, dword [eax*4 + 0x596cc0]
and eax, 0xff0000
xor ecx, eax
mov eax, ebx
shr eax, 0x18
movzx eax, byte [eax*4 + 0x5964c0]
xor ecx, eax
movzx eax, bl
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor ecx, eax
mov eax, dword [esi]
xor ecx, ebp
xor eax, ecx
mov dword [edx + 0x18], ecx
mov ecx, dword [edx + 8]
xor ecx, eax
mov dword [edx + 0x1c], eax
mov eax, dword [edx + 0xc]
xor eax, ecx
mov dword [edx + 0x20], ecx
mov dword [edx + 0x24], eax
lea eax, [edx + 0x28]
mov edx, dword [eax - 0x18]
lea eax, [eax + 0x18]
xor edx, dword [eax - 0x1c]
mov ecx, dword [eax - 0x2c]
xor ecx, edx
mov dword [eax - 0x18], edx
mov dword [eax - 0x14], ecx
mov edx, dword [eax - 0x14]
mov ecx, edx
shr ecx, 8
movzx ecx, cl
mov esi, dword [ecx*4 + 0x596cc0]
mov ecx, edx
shr ecx, 0x10
and esi, 0xff0000
movzx ecx, cl
mov ecx, dword [ecx*4 + 0x5968c0]
and ecx, 0xff000000
xor esi, ecx
mov ecx, edx
shr ecx, 0x18
movzx ecx, byte [ecx*4 + 0x5964c0]
xor esi, ecx
movzx ecx, dl
mov ecx, dword [ecx*4 + 0x5960c0]
and ecx, 0xff00
xor esi, ecx
xor esi, dword [eax - 0x28]
xor esi, dword [edi]
add edi, 4
mov dword [eax - 0x10], esi
mov ecx, dword [eax - 0x24]
xor ecx, esi
mov dword [eax - 0xc], ecx
mov edx, dword [eax - 0x20]
xor edx, ecx
mov dword [eax - 8], edx
mov ecx, dword [eax - 0x1c]
xor ecx, edx
mov dword [eax - 4], ecx
cmp edi, 0x5981e0
jne 0x4d43a1
pop esi
pop ebp
pop edi
xor eax, eax
pop ebx
ret
mov ecx, dword [ebx + 0x18]
mov eax, ecx
ror eax, 8
and eax, 0xff00ff00
rol ecx, 8
and ecx, 0xff00ff
or eax, ecx
mov dword [edx + 0x18], eax
mov eax, dword [ebx + 0x1c]
mov ebx, eax
ror ebx, 8
rol eax, 8
and ebx, 0xff00ff00
and eax, 0xff00ff
or ebx, eax
mov dword [edx + 0x1c], ebx
cmp edi, 0x100
jne 0x4d45de
mov eax, ebx
mov edi, 0x5981c4
shr eax, 0x10
movzx eax, al
mov ecx, dword [eax*4 + 0x5968c0]
mov eax, ebx
shr eax, 8
xor ecx, 0x1000000
movzx eax, al
and ecx, 0xff000000
mov eax, dword [eax*4 + 0x596cc0]
and eax, 0xff0000
xor ecx, eax
mov eax, ebx
shr eax, 0x18
movzx eax, byte [eax*4 + 0x5964c0]
xor ecx, eax
movzx eax, bl
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor ecx, eax
mov eax, dword [esi]
xor ecx, ebp
lea esi, [edx + 0x30]
xor eax, ecx
mov dword [edx + 0x20], ecx
mov ecx, dword [edx + 8]
xor ecx, eax
mov dword [edx + 0x24], eax
mov eax, dword [edx + 0xc]
xor eax, ecx
mov dword [edx + 0x28], ecx
mov dword [edx + 0x2c], eax
mov ecx, dword [esi - 4]
lea esi, [esi + 0x20]
mov eax, ecx
shr eax, 0x10
movzx eax, al
mov edx, dword [eax*4 + 0x596cc0]
mov eax, ecx
shr eax, 8
and edx, 0xff0000
movzx eax, al
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor edx, eax
mov eax, ecx
shr eax, 0x18
mov eax, dword [eax*4 + 0x5968c0]
and eax, 0xff000000
xor edx, eax
movzx eax, cl
mov ecx, dword [esi - 0x38]
movzx eax, byte [eax*4 + 0x5964c0]
xor edx, eax
mov eax, dword [esi - 0x3c]
xor edx, dword [esi - 0x40]
xor eax, edx
mov dword [esi - 0x20], edx
mov dword [esi - 0x1c], eax
xor ecx, eax
mov eax, dword [esi - 0x34]
xor eax, ecx
mov dword [esi - 0x18], ecx
mov dword [esi - 0x14], eax
mov ecx, dword [esi - 0x14]
mov eax, ecx
shr eax, 8
movzx eax, al
mov edx, dword [eax*4 + 0x596cc0]
mov eax, ecx
shr eax, 0x10
and edx, 0xff0000
movzx eax, al
mov eax, dword [eax*4 + 0x5968c0]
and eax, 0xff000000
xor edx, eax
mov eax, ecx
shr eax, 0x18
movzx eax, byte [eax*4 + 0x5964c0]
xor edx, eax
movzx eax, cl
mov eax, dword [eax*4 + 0x5960c0]
and eax, 0xff00
xor edx, eax
xor edx, dword [esi - 0x30]
xor edx, dword [edi]
add edi, 4
mov dword [esi - 0x10], edx
mov eax, dword [esi - 0x2c]
xor eax, edx
mov dword [esi - 0xc], eax
mov ecx, dword [esi - 0x28]
xor ecx, eax
mov dword [esi - 8], ecx
mov eax, dword [esi - 0x24]
xor eax, ecx
mov dword [esi - 4], eax
cmp edi, 0x5981dc
jne 0x4d44f2
pop esi
pop ebp
pop edi
xor eax, eax
pop ebx
ret
or eax, 0xffffffff
pop ebx
ret