Function at 0x4b7a6e
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 0x4b7a9d
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x4b7aa7
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004b1942
test eax, eax
pop ecx
je 0x4b7ac2
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049cdbf
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004a0ab5
test eax, eax
pop ecx
je 0x4b7add
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0049cdbf
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4b7afa
test ecx, 0x74000
jne 0x4b7af6
cmp dword [ebp - 0x24], eax
je 0x4b7afa
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x4b7b54
dec eax
je 0x4b7b3e
dec eax
je 0x4b7b39
call fcn.004a6881
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004a686e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0049cebb
add esp, 0x14
jmp 0x4b8106
mov dword [ebp - 8], edx
jmp 0x4b7b57
test cl, 8
je 0x4b7b4b
test ecx, 0x70000
jne 0x4b7b39
mov dword [ebp - 8], 0x40000000
jmp 0x4b7b57
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4b7b98
sub eax, ecx
je 0x4b7b8f
sub eax, ecx
je 0x4b7b86
sub eax, ecx
je 0x4b7b7d
sub eax, 0x40
jne 0x4b7b13
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4b7b9b
mov dword [ebp - 0x10], 3
jmp 0x4b7b9b
mov dword [ebp - 0x10], 2
jmp 0x4b7b9b
mov dword [ebp - 0x10], 1
jmp 0x4b7b9b
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 0x4b7bee
je 0x4b7be5
cmp eax, ebx
je 0x4b7be5
cmp eax, edi
je 0x4b7bdc
cmp eax, 0x200
je 0x4b7c61
cmp eax, 0x300
jne 0x4b7b13
mov dword [ebp - 0x14], 2
jmp 0x4b7c0b
mov dword [ebp - 0x14], 4
jmp 0x4b7c0b
mov dword [ebp - 0x14], 3
jmp 0x4b7c0b
cmp eax, 0x500
je 0x4b7c04
cmp eax, 0x600
je 0x4b7c61
cmp eax, edx
jne 0x4b7b13
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4b7c2f
mov ecx, dword [0x5635b8]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4b7c2f
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4b7c4b
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4b7c4b
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4b7c54
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4b7c6a
or dword [ebp - 0xc], 0x8000000
jmp 0x4b7c75
mov dword [ebp - 0x14], 5
jmp 0x4b7c0b
test al, 0x10
je 0x4b7c75
or dword [ebp - 0xc], 0x10000000
call fcn.004a1984
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4b7c9b
call fcn.004a6881
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004a686e
mov dword [eax], 0x18
jmp 0x4b7d29
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 0x4b7d35
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4b7d01
test byte [ebp + 0x10], 1
je 0x4b7d01
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 0x4b7d35
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x564b20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004a6894
pop ecx
call fcn.004a686e
mov eax, dword [eax]
jmp 0x4b81c2
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x4b7d86
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x564b20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004a6894
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x4b7d29
call fcn.004a686e
mov dword [eax], 0xd
jmp 0x4b7d29
cmp eax, 2
jne 0x4b7d91
or byte [ebp - 1], 0x40
jmp 0x4b7d9a
cmp eax, 3
jne 0x4b7d9a
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004a1753
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x564b20]
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 + 0x564b20]
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 0x4b7e6f
test cl, 0x80
je 0x4b7f3f
test byte [ebp + 0x10], 2
je 0x4b7e6f
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004a795f
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4b7e2e
call fcn.004a6881
cmp dword [eax], 0x83
je 0x4b7e6f
push dword [esi]
call fcn.004aa879
jmp 0x4b7d28
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004a997b
add esp, 0xc
test eax, eax
jne 0x4b7e5f
cmp byte [ebp - 4], 0x1a
jne 0x4b7e5f
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004a11b7
add esp, 0xc
cmp eax, edi
je 0x4b7e22
push ebx
push ebx
push dword [esi]
call fcn.004a795f
add esp, 0xc
cmp eax, edi
je 0x4b7e22
test byte [ebp - 1], 0x80
je 0x4b7f3f
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4b7e97
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4b7e94
or dword [ebp + 0x10], edi
jmp 0x4b7e97
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4b7ee4
cmp eax, 0x10000
je 0x4b7ed0
cmp eax, 0x14000
je 0x4b7ed0
cmp eax, 0x20000
je 0x4b7ede
cmp eax, 0x24000
je 0x4b7ede
cmp eax, 0x40000
je 0x4b7eca
cmp eax, 0x44000
jne 0x4b7ee7
mov byte [ebp - 2], 1
jmp 0x4b7ee7
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4b7ee7
mov byte [ebp - 2], 2
jmp 0x4b7ee7
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4b7f3f
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4b7f3f
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4b8099
cmp eax, 0x80000000
je 0x4b8060
cmp eax, ecx
jne 0x4b7f3f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b7f3f
cmp eax, 2
jbe 0x4b8141
cmp eax, 4
jbe 0x4b8032
cmp eax, 5
je 0x4b8141
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x564b20]
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 + 0x564b20]
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 0x4b7fb1
test byte [ebp + 0x10], 8
je 0x4b7fb1
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x564b20]
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 0x4b81c0
test byte [ebp + 0x10], 1
je 0x4b81c0
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 0x4b81a9
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004a6894
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x564b20]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004a17d0
pop ecx
jmp 0x4b7d28
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b1976
add esp, 0x10
or eax, edx
je 0x4b8141
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b1976
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4b7e22
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004a997b
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b7e22
cmp eax, 2
je 0x4b80e5
cmp eax, 3
jne 0x4b8133
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4b80e5
mov byte [ebp - 2], 1
jmp 0x4b7f3f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4b7f3f
cmp eax, 2
jbe 0x4b8141
cmp eax, 4
ja 0x4b7f36
push 2
push ebx
push ebx
push dword [esi]
call fcn.004b1976
add esp, 0x10
or eax, edx
je 0x4b8141
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004b1976
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4b7f3f
jmp 0x4b7e22
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4b810d
push dword [esi]
call fcn.004aa879
pop ecx
call fcn.004a686e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4b81c2
cmp eax, 0xfeff
jne 0x4b8133
push ebx
push 2
push dword [esi]
call fcn.004a795f
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b7e22
mov byte [ebp - 2], 2
jmp 0x4b7f3f
push ebx
push ebx
push dword [esi]
call fcn.004a795f
add esp, 0xc
jmp 0x4b80d7
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4b8161
dec eax
jne 0x4b7f3f
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4b816f
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.004b17aa
add esp, 0xc
cmp eax, 0xffffffff
je 0x4b8195
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4b816f
jmp 0x4b7f3f
push dword [esi]
call fcn.004aa879
pop ecx
call fcn.004a686e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4b81c2
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x564b20]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret