Function at 0x4d8e5e
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 0x4d8e8d
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d8e97
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004dbcc6
test eax, eax
pop ecx
je 0x4d8eb2
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004be932
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004bd709
test eax, eax
pop ecx
je 0x4d8ecd
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004be932
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d8eea
test ecx, 0x74000
jne 0x4d8ee6
cmp dword [ebp - 0x24], eax
je 0x4d8eea
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x4d8f44
dec eax
je 0x4d8f2e
dec eax
je 0x4d8f29
call fcn.004c0921
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004c090e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004bea2e
add esp, 0x14
jmp 0x4d94f6
mov dword [ebp - 8], edx
jmp 0x4d8f47
test cl, 8
je 0x4d8f3b
test ecx, 0x70000
jne 0x4d8f29
mov dword [ebp - 8], 0x40000000
jmp 0x4d8f47
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d8f88
sub eax, ecx
je 0x4d8f7f
sub eax, ecx
je 0x4d8f76
sub eax, ecx
je 0x4d8f6d
sub eax, 0x40
jne 0x4d8f03
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d8f8b
mov dword [ebp - 0x10], 3
jmp 0x4d8f8b
mov dword [ebp - 0x10], 2
jmp 0x4d8f8b
mov dword [ebp - 0x10], 1
jmp 0x4d8f8b
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, pe_nt_image_headers32
jg 0x4d8fde
je 0x4d8fd5
cmp eax, ebx
je 0x4d8fd5
cmp eax, edi
je 0x4d8fcc
cmp eax, 0x200
je 0x4d9051
cmp eax, 0x300
jne 0x4d8f03
mov dword [ebp - 0x14], 2
jmp 0x4d8ffb
mov dword [ebp - 0x14], 4
jmp 0x4d8ffb
mov dword [ebp - 0x14], 3
jmp 0x4d8ffb
cmp eax, 0x500
je 0x4d8ff4
cmp eax, 0x600
je 0x4d9051
cmp eax, edx
jne 0x4d8f03
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d901f
mov ecx, dword [0x50cfbc]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d901f
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d903b
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d903b
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d9044
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d905a
or dword [ebp - 0xc], 0x8000000
jmp 0x4d9065
mov dword [ebp - 0x14], 5
jmp 0x4d8ffb
test al, 0x10
je 0x4d9065
or dword [ebp - 0xc], 0x10000000
call fcn.004d8bde
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d908b
call fcn.004c0921
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004c090e
mov dword [eax], 0x18
jmp 0x4d9119
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 0x4d9125
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d90f1
test byte [ebp + 0x10], 1
je 0x4d90f1
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 0x4d9125
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x50e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004c0934
pop ecx
call fcn.004c090e
mov eax, dword [eax]
jmp 0x4d95b2
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x4d9176
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x50e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.004c0934
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x4d9119
call fcn.004c090e
mov dword [eax], 0xd
jmp 0x4d9119
cmp eax, 2
jne 0x4d9181
or byte [ebp - 1], 0x40
jmp 0x4d918a
cmp eax, 3
jne 0x4d918a
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004d89ad
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x50e8e0]
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 + 0x50e8e0]
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 0x4d925f
test cl, 0x80
je 0x4d932f
test byte [ebp + 0x10], 2
je 0x4d925f
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d921e
call fcn.004c0921
cmp dword [eax], 0x83
je 0x4d925f
push dword [esi]
call fcn.004d2a2a
jmp 0x4d9118
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004d34d1
add esp, 0xc
test eax, eax
jne 0x4d924f
cmp byte [ebp - 4], 0x1a
jne 0x4d924f
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004dba56
add esp, 0xc
cmp eax, edi
je 0x4d9212
push ebx
push ebx
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, edi
je 0x4d9212
test byte [ebp - 1], 0x80
je 0x4d932f
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d9287
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d9284
or dword [ebp + 0x10], edi
jmp 0x4d9287
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d92d4
cmp eax, 0x10000
je 0x4d92c0
cmp eax, 0x14000
je 0x4d92c0
cmp eax, 0x20000
je 0x4d92ce
cmp eax, 0x24000
je 0x4d92ce
cmp eax, 0x40000
je 0x4d92ba
cmp eax, 0x44000
jne 0x4d92d7
mov byte [ebp - 2], 1
jmp 0x4d92d7
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d92d7
mov byte [ebp - 2], 2
jmp 0x4d92d7
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d932f
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d932f
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d9489
cmp eax, 0x80000000
je 0x4d9450
cmp eax, ecx
jne 0x4d932f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d932f
cmp eax, 2
jbe 0x4d9531
cmp eax, 4
jbe 0x4d9422
cmp eax, 5
je 0x4d9531
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
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 + 0x50e8e0]
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 0x4d93a1
test byte [ebp + 0x10], 8
je 0x4d93a1
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
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 0x4d95b0
test byte [ebp + 0x10], 1
je 0x4d95b0
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 0x4d9599
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004c0934
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004d8a2a
pop ecx
jmp 0x4d9118
push 2
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
or eax, edx
je 0x4d9531
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004d699d
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d9212
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004d34d1
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d9212
cmp eax, 2
je 0x4d94d5
cmp eax, 3
jne 0x4d9523
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d94d5
mov byte [ebp - 2], 1
jmp 0x4d932f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d932f
cmp eax, 2
jbe 0x4d9531
cmp eax, 4
ja 0x4d9326
push 2
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
or eax, edx
je 0x4d9531
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d932f
jmp 0x4d9212
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d94fd
push dword [esi]
call fcn.004d2a2a
pop ecx
call fcn.004c090e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d95b2
cmp eax, 0xfeff
jne 0x4d9523
push ebx
push 2
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d9212
mov byte [ebp - 2], 2
jmp 0x4d932f
push ebx
push ebx
push dword [esi]
call fcn.004d3263
add esp, 0xc
jmp 0x4d94c7
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d9551
dec eax
jne 0x4d932f
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d955f
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.004d4b46
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d9585
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d955f
jmp 0x4d932f
push dword [esi]
call fcn.004d2a2a
pop ecx
call fcn.004c090e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d95b2
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret