Function at 0x4d5032
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
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 - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x4d5061
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d506b
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004d7f34
test eax, eax
pop ecx
je 0x4d5086
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b7a38
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004c1b3e
test eax, eax
pop ecx
je 0x4d50a1
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004b7a38
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d50be
test ecx, 0x74000
jne 0x4d50ba
cmp dword [ebp - 0x24], eax
je 0x4d50be
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, Ordinal_4
je 0x4d5118
dec eax
je 0x4d5102
dec eax
je 0x4d50fd
call fcn.004b9e3e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b9e2b
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004b7b34
add esp, 0x14
jmp 0x4d56ca
mov dword [ebp - 8], edx
jmp 0x4d511b
test cl, 8
je 0x4d510f
test ecx, 0x70000
jne 0x4d50fd
mov dword [ebp - 8], 0x40000000
jmp 0x4d511b
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d515c
sub eax, ecx
je 0x4d5153
sub eax, ecx
je 0x4d514a
sub eax, ecx
je 0x4d5141
sub eax, 0x40
jne 0x4d50d7
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d515f
mov dword [ebp - 0x10], 3
jmp 0x4d515f
mov dword [ebp - 0x10], 2
jmp 0x4d515f
mov dword [ebp - 0x10], 1
jmp 0x4d515f
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 0x4d51b2
je 0x4d51a9
cmp eax, ebx
je 0x4d51a9
cmp eax, edi
je 0x4d51a0
cmp eax, 0x200
je 0x4d5225
cmp eax, 0x300
jne 0x4d50d7
mov dword [ebp - 0x14], 2
jmp 0x4d51cf
mov dword [ebp - 0x14], 4
jmp 0x4d51cf
mov dword [ebp - 0x14], 3
jmp 0x4d51cf
cmp eax, 0x500
je 0x4d51c8
cmp eax, 0x600
je 0x4d5225
cmp eax, edx
jne 0x4d50d7
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d51f3
mov ecx, dword [0x51ae70]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d51f3
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d520f
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d520f
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d5218
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d522e
or dword [ebp - 0xc], 0x8000000
jmp 0x4d5239
mov dword [ebp - 0x14], 5
jmp 0x4d51cf
test al, 0x10
je 0x4d5239
or dword [ebp - 0xc], 0x10000000
call fcn.004d34ea
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d525f
call fcn.004b9e3e
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004b9e2b
mov dword [eax], 0x18
jmp 0x4d52ed
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
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 0x4d52f9
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d52c5
test byte [ebp + 0x10], 1
je 0x4d52c5
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
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 0x4d52f9
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c7c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b9e51
pop ecx
call fcn.004b9e2b
mov eax, dword [eax]
jmp 0x4d5786
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4d534a
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x51c7c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004b9e51
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4d52ed
call fcn.004b9e2b
mov dword [eax], 0xd
jmp 0x4d52ed
cmp eax, 2
jne 0x4d5355
or byte [ebp - 1], 0x40
jmp 0x4d535e
cmp eax, 3
jne 0x4d535e
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004d32b9
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x51c7c0]
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 + 0x51c7c0]
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 0x4d5433
test cl, 0x80
je 0x4d5503
test byte [ebp + 0x10], 2
je 0x4d5433
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d53f2
call fcn.004b9e3e
cmp dword [eax], 0x83
je 0x4d5433
push dword [esi]
call fcn.004c7016
jmp 0x4d52ec
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004cdfff
add esp, 0xc
test eax, eax
jne 0x4d5423
cmp byte [ebp - 4], 0x1a
jne 0x4d5423
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004d7cc4
add esp, 0xc
cmp eax, edi
je 0x4d53e6
push ebx
push ebx
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, edi
je 0x4d53e6
test byte [ebp - 1], 0x80
je 0x4d5503
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d545b
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d5458
or dword [ebp + 0x10], edi
jmp 0x4d545b
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d54a8
cmp eax, 0x10000
je 0x4d5494
cmp eax, 0x14000
je 0x4d5494
cmp eax, 0x20000
je 0x4d54a2
cmp eax, 0x24000
je 0x4d54a2
cmp eax, 0x40000
je 0x4d548e
cmp eax, 0x44000
jne 0x4d54ab
mov byte [ebp - 2], 1
jmp 0x4d54ab
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d54ab
mov byte [ebp - 2], 2
jmp 0x4d54ab
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d5503
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d5503
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d565d
cmp eax, 0x80000000
je 0x4d5624
cmp eax, ecx
jne 0x4d5503
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d5503
cmp eax, 2
jbe 0x4d5705
cmp eax, 4
jbe 0x4d55f6
cmp eax, 5
je 0x4d5705
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
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 + 0x51c7c0]
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 0x4d5575
test byte [ebp + 0x10], 8
je 0x4d5575
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
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 0x4d5784
test byte [ebp + 0x10], 1
je 0x4d5784
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x4d576d
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004b9e51
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004d3336
pop ecx
jmp 0x4d52ec
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
or eax, edx
je 0x4d5705
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d53e6
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004cdfff
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d53e6
cmp eax, 2
je 0x4d56a9
cmp eax, 3
jne 0x4d56f7
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d56a9
mov byte [ebp - 2], 1
jmp 0x4d5503
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d5503
cmp eax, 2
jbe 0x4d5705
cmp eax, 4
ja 0x4d54fa
push 2
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
or eax, edx
je 0x4d5705
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004cf42f
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d5503
jmp 0x4d53e6
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d56d1
push dword [esi]
call fcn.004c7016
pop ecx
call fcn.004b9e2b
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d5786
cmp eax, 0xfeff
jne 0x4d56f7
push ebx
push 2
push dword [esi]
call fcn.004c7e53
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d53e6
mov byte [ebp - 2], 2
jmp 0x4d5503
push ebx
push ebx
push dword [esi]
call fcn.004c7e53
add esp, 0xc
jmp 0x4d569b
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d5725
dec eax
jne 0x4d5503
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d5733
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.004c6119
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d5759
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d5733
jmp 0x4d5503
push dword [esi]
call fcn.004c7016
pop ecx
call fcn.004b9e2b
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d5786
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x51c7c0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret