Function at 0x4d766f
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 0x4d769e
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d76a8
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004defcb
test eax, eax
pop ecx
je 0x4d76c3
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004bfeec
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004c9dfb
test eax, eax
pop ecx
je 0x4d76de
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004bfeec
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d76fb
test ecx, 0x74000
jne 0x4d76f7
cmp dword [ebp - 0x24], eax
je 0x4d76fb
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x4d7755
dec eax
je 0x4d773f
dec eax
je 0x4d773a
call fcn.004ca0bc
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ca0a9
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004bffe8
add esp, 0x14
jmp 0x4d7d08
mov dword [ebp - 8], edx
jmp 0x4d7758
test cl, 8
je 0x4d774c
test ecx, 0x70000
jne 0x4d773a
mov dword [ebp - 8], 0x40000000
jmp 0x4d7758
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d7799
sub eax, ecx
je 0x4d7790
sub eax, ecx
je 0x4d7787
sub eax, ecx
je 0x4d777e
sub eax, 0x40
jne 0x4d7714
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d779c
mov dword [ebp - 0x10], 3
jmp 0x4d779c
mov dword [ebp - 0x10], 2
jmp 0x4d779c
mov dword [ebp - 0x10], 1
jmp 0x4d779c
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 0x4d77ef
je 0x4d77e6
cmp eax, ebx
je 0x4d77e6
cmp eax, edi
je 0x4d77dd
cmp eax, 0x200
je 0x4d7862
cmp eax, 0x300
jne 0x4d7714
mov dword [ebp - 0x14], 2
jmp 0x4d780c
mov dword [ebp - 0x14], 4
jmp 0x4d780c
mov dword [ebp - 0x14], 3
jmp 0x4d780c
cmp eax, 0x500
je 0x4d7805
cmp eax, 0x600
je 0x4d7862
cmp eax, edx
jne 0x4d7714
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d7830
mov ecx, dword [0x78e8a4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d7830
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d784c
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d784c
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d7855
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d786b
or dword [ebp - 0xc], 0x8000000
jmp 0x4d7876
mov dword [ebp - 0x14], 5
jmp 0x4d780c
test al, 0x10
je 0x4d7876
or dword [ebp - 0xc], 0x10000000
call fcn.004cb3fc
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d789c
call fcn.004ca0bc
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ca0a9
mov dword [eax], 0x18
jmp 0x4d792a
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 0x4d7936
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d7902
test byte [ebp + 0x10], 1
je 0x4d7902
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 0x4d7936
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x790800]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ca0cf
pop ecx
call fcn.004ca0a9
mov eax, dword [eax]
jmp 0x4d7dc4
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4d7987
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x790800]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004ca0cf
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4d792a
call fcn.004ca0a9
mov dword [eax], 0xd
jmp 0x4d792a
cmp eax, 2
jne 0x4d7992
or byte [ebp - 1], 0x40
jmp 0x4d799b
cmp eax, 3
jne 0x4d799b
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004cb1cb
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x790800]
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 + 0x790800]
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 0x4d7a71
test cl, 0x80
je 0x4d7b41
test byte [ebp + 0x10], 2
je 0x4d7a71
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d7a2f
call fcn.004ca0bc
cmp dword [eax], 0x83
je 0x4d7a71
push dword [esi]
call fcn.004c7116
jmp 0x4d7929
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004c9561
add esp, 0xc
test eax, eax
jne 0x4d7a61
cmp word [ebp - 0x2c], 0x1a
jne 0x4d7a61
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004ded5b
add esp, 0xc
cmp eax, edi
je 0x4d7a23
push ebx
push ebx
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, edi
je 0x4d7a23
test byte [ebp - 1], 0x80
je 0x4d7b41
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d7a99
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d7a96
or dword [ebp + 0x10], edi
jmp 0x4d7a99
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d7ae6
cmp eax, 0x10000
je 0x4d7ad2
cmp eax, 0x14000
je 0x4d7ad2
cmp eax, 0x20000
je 0x4d7ae0
cmp eax, 0x24000
je 0x4d7ae0
cmp eax, 0x40000
je 0x4d7acc
cmp eax, 0x44000
jne 0x4d7ae9
mov byte [ebp - 2], 1
jmp 0x4d7ae9
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4d7ae9
mov byte [ebp - 2], 2
jmp 0x4d7ae9
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4d7b41
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4d7b41
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4d7c9b
cmp eax, 0x80000000
je 0x4d7c62
cmp eax, ecx
jne 0x4d7b41
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d7b41
cmp eax, 2
jbe 0x4d7d43
cmp eax, 4
jbe 0x4d7c34
cmp eax, 5
je 0x4d7d43
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
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 + 0x790800]
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 0x4d7bb3
test byte [ebp + 0x10], 8
je 0x4d7bb3
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
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 0x4d7dc2
test byte [ebp + 0x10], 1
je 0x4d7dc2
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 0x4d7dab
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ca0cf
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004cb248
pop ecx
jmp 0x4d7929
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
or eax, edx
je 0x4d7d43
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d7a23
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004c9561
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d7a23
cmp eax, 2
je 0x4d7ce7
cmp eax, 3
jne 0x4d7d35
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4d7ce7
mov byte [ebp - 2], 1
jmp 0x4d7b41
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4d7b41
cmp eax, 2
jbe 0x4d7d43
cmp eax, 4
ja 0x4d7b38
push 2
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
or eax, edx
je 0x4d7d43
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004c6f24
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4d7b41
jmp 0x4d7a23
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4d7d0f
push dword [esi]
call fcn.004c7116
pop ecx
call fcn.004ca0a9
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4d7dc4
cmp eax, 0xfeff
jne 0x4d7d35
push ebx
push 2
push dword [esi]
call fcn.004d38c5
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d7a23
mov byte [ebp - 2], 2
jmp 0x4d7b41
push ebx
push ebx
push dword [esi]
call fcn.004d38c5
add esp, 0xc
jmp 0x4d7cd9
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4d7d63
dec eax
jne 0x4d7b41
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4d7d71
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.004c6e48
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d7d97
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4d7d71
jmp 0x4d7b41
push dword [esi]
call fcn.004c7116
pop ecx
call fcn.004ca0a9
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4d7dc4
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x790800]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret