Function at 0x4d320e
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x38
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x38], 0xc
mov dword [ebp - 0x34], ebx
je 0x4d323d
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d3247
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004d1057
test eax, eax
pop ecx
je 0x4d3262
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b82d7
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004bc11b
test eax, eax
pop ecx
je 0x4d327d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b82d7
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d329a
test ecx, 0x74000
jne 0x4d3296
cmp dword [ebp - 0x24], eax
je 0x4d329a
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, connect
je 0x4d32f4
dec eax
je 0x4d32de
dec eax
je 0x4d32d9
call fcn.004bc041
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004bc02e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004b83d3
add esp, 0x14
jmp 0x4d38a7
mov dword [ebp - 8], edx
jmp 0x4d32f7
test cl, 8
je 0x4d32eb
test ecx, 0x70000
jne 0x4d32d9
mov dword [ebp - 8], 0x40000000
jmp 0x4d32f7
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d3338
sub eax, ecx
je 0x4d332f
sub eax, ecx
je 0x4d3326
sub eax, ecx
je 0x4d331d
sub eax, 0x40
jne 0x4d32b3
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d333b
mov dword [ebp - 0x10], 3
jmp 0x4d333b
mov dword [ebp - 0x10], 2
jmp 0x4d333b
mov dword [ebp - 0x10], 1
jmp 0x4d333b
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x4d338e
je 0x4d3385
cmp eax, ebx
je 0x4d3385
cmp eax, edi
je 0x4d337c
cmp eax, 0x200
je 0x4d3401
cmp eax, 0x300
jne 0x4d32b3
mov dword [ebp - 0x14], 2
jmp 0x4d33ab
mov dword [ebp - 0x14], 4
jmp 0x4d33ab
mov dword [ebp - 0x14], 3
jmp 0x4d33ab
cmp eax, 0x500
je 0x4d33a4
cmp eax, 0x600
je 0x4d3401
cmp eax, edx
jne 0x4d32b3
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d33cf
mov ecx, dword [0x63428c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d33cf
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d33eb
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d33eb
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d33f4
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d340a
or dword [ebp - 0xc], 0x8000000
jmp 0x4d3415
mov dword [ebp - 0x14], 5
jmp 0x4d33ab
test al, 0x10
je 0x4d3415
or dword [ebp - 0xc], 0x10000000
call fcn.004bdf45
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d343b
call fcn.004bc041
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004bc02e
mov dword [eax], 0x18
jmp 0x4d34c9
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileW]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x38]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d34d5
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d34a1
test byte [ebp + 0x10], 1
je 0x4d34a1
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d34d5
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x634f00]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004bc054
pop ecx
call fcn.004bc02e
mov eax, dword [eax]
jmp 0x4d3963
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4d3526
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x634f00]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004bc054
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4d34c9
call fcn.004bc02e
mov dword [eax], 0xd
jmp 0x4d34c9
cmp eax, 2
jne 0x4d3531
or byte [ebp - 1], 0x40
jmp 0x4d353a
cmp eax, 3
jne 0x4d353a
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004bdd14
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x634f00]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x634f00]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x4d3610
test cl, 0x80
je 0x4d36e0
test byte [ebp + 0x10], 2
je 0x4d3610
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004c6de9
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d35ce
call fcn.004bc041
cmp dword [eax], 0x83
je 0x4d3610
push dword [esi]
call fcn.004c701f
jmp 0x4d34c8
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004ca3c2
add esp, 0xc
test eax, eax
jne 0x4d3600
cmp word [ebp - 0x2c], 0x1a
jne 0x4d3600
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004d0de7
add esp, 0xc
cmp eax, edi
je 0x4d35c2
push ebx
push ebx
push dword [esi]
call fcn.004c6de9
add esp, 0xc
cmp eax, edi
je 0x4d35c2
test byte [ebp - 1], 0x80
je 0x4d36e0
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d3638
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d3635
or dword [ebp + 0x10], edi
jmp 0x4d3638
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d3685
cmp eax, 0x10000
je 0x4d3671
cmp eax, 0x14000
je 0x4d3671
cmp eax, 0x20000
je 0x4d367f
cmp eax, 0x24000
je 0x4d367f
cmp eax, 0x40000
je 0x4d366b
cmp eax, 0x44000
jne 0x4d3688
mov byte [ebp - 2], 1
jmp 0x4d3688
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d3688
mov byte [ebp - 2], 2
jmp 0x4d3688
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d36e0
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d36e0
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d383a
cmp eax, 0x80000000
je 0x4d3801
cmp eax, ecx
jne 0x4d36e0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d36e0
cmp eax, 2
jbe 0x4d38e2
cmp eax, 4
jbe 0x4d37d3
cmp eax, 5
je 0x4d38e2
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x634f00]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x634f00]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x4d3752
test byte [ebp + 0x10], 8
je 0x4d3752
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x634f00]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x4d3961
test byte [ebp + 0x10], 1
je 0x4d3961
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
cmp eax, 0xffffffff
jne 0x4d394a
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004bc054
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x634f00]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004bdd91
pop ecx
jmp 0x4d34c8
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cd6fe
add esp, 0x10
or eax, edx
je 0x4d38e2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cd6fe
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d35c2
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004ca3c2
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d35c2
cmp eax, 2
je 0x4d3886
cmp eax, 3
jne 0x4d38d4
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d3886
mov byte [ebp - 2], 1
jmp 0x4d36e0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d36e0
cmp eax, 2
jbe 0x4d38e2
cmp eax, 4
ja 0x4d36d7
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cd6fe
add esp, 0x10
or eax, edx
je 0x4d38e2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cd6fe
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d36e0
jmp 0x4d35c2
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d38ae
push dword [esi]
call fcn.004c701f
pop ecx
call fcn.004bc02e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d3963
cmp eax, 0xfeff
jne 0x4d38d4
push ebx
push 2
push dword [esi]
call fcn.004c6de9
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d35c2
mov byte [ebp - 2], 2
jmp 0x4d36e0
push ebx
push ebx
push dword [esi]
call fcn.004c6de9
add esp, 0xc
jmp 0x4d3878
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d3902
dec eax
jne 0x4d36e0
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d3910
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call fcn.004c68da
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d3936
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d3910
jmp 0x4d36e0
push dword [esi]
call fcn.004c701f
pop ecx
call fcn.004bc02e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d3963
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x634f00]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret