Function at 0x53f2b2
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 0x53f2e1
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x53f2eb
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00541466
test eax, eax
pop ecx
je 0x53f306
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0051e1f4
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0052680b
test eax, eax
pop ecx
je 0x53f321
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0051e1f4
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x53f33e
test ecx, 0x74000
jne 0x53f33a
cmp dword [ebp - 0x24], eax
je 0x53f33e
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, bind
je 0x53f398
dec eax
je 0x53f382
dec eax
je 0x53f37d
call fcn.005282b1
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0052829e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0051e2f0
add esp, 0x14
jmp 0x53f94b
mov dword [ebp - 8], edx
jmp 0x53f39b
test cl, 8
je 0x53f38f
test ecx, 0x70000
jne 0x53f37d
mov dword [ebp - 8], 0x40000000
jmp 0x53f39b
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x53f3dc
sub eax, ecx
je 0x53f3d3
sub eax, ecx
je 0x53f3ca
sub eax, ecx
je 0x53f3c1
sub eax, 0x40
jne 0x53f357
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x53f3df
mov dword [ebp - 0x10], 3
jmp 0x53f3df
mov dword [ebp - 0x10], 2
jmp 0x53f3df
mov dword [ebp - 0x10], 1
jmp 0x53f3df
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 0x53f432
je 0x53f429
cmp eax, ebx
je 0x53f429
cmp eax, edi
je 0x53f420
cmp eax, 0x200
je 0x53f4a5
cmp eax, 0x300
jne 0x53f357
mov dword [ebp - 0x14], 2
jmp 0x53f44f
mov dword [ebp - 0x14], 4
jmp 0x53f44f
mov dword [ebp - 0x14], 3
jmp 0x53f44f
cmp eax, 0x500
je 0x53f448
cmp eax, 0x600
je 0x53f4a5
cmp eax, edx
jne 0x53f357
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x53f473
mov ecx, dword [0x75e24c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x53f473
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x53f48f
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x53f48f
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x53f498
or dword [ebp - 0xc], edi
test al, 0x20
je 0x53f4ae
or dword [ebp - 0xc], 0x8000000
jmp 0x53f4b9
mov dword [ebp - 0x14], 5
jmp 0x53f44f
test al, 0x10
je 0x53f4b9
or dword [ebp - 0xc], 0x10000000
call fcn.0053df1d
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x53f4df
call fcn.005282b1
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0052829e
mov dword [eax], 0x18
jmp 0x53f56d
mov eax, dword [ebp + 8]
mov edi, dword [0x71f620]
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 0x53f579
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x53f545
test byte [ebp + 0x10], 1
je 0x53f545
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 0x53f579
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x76ade0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.005282c4
pop ecx
call fcn.0052829e
mov eax, dword [eax]
jmp 0x53fa07
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x53f5ca
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x76ade0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.005282c4
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x53f56d
call fcn.0052829e
mov dword [eax], 0xd
jmp 0x53f56d
cmp eax, 2
jne 0x53f5d5
or byte [ebp - 1], 0x40
jmp 0x53f5de
cmp eax, 3
jne 0x53f5de
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0053dcec
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x76ade0]
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 + 0x76ade0]
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 0x53f6b4
test cl, 0x80
je 0x53f784
test byte [ebp + 0x10], 2
je 0x53f6b4
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00530b86
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x53f672
call fcn.005282b1
cmp dword [eax], 0x83
je 0x53f6b4
push dword [esi]
call fcn.00530529
jmp 0x53f56c
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.0053d56c
add esp, 0xc
test eax, eax
jne 0x53f6a4
cmp word [ebp - 0x2c], 0x1a
jne 0x53f6a4
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.005411f6
add esp, 0xc
cmp eax, edi
je 0x53f666
push ebx
push ebx
push dword [esi]
call fcn.00530b86
add esp, 0xc
cmp eax, edi
je 0x53f666
test byte [ebp - 1], 0x80
je 0x53f784
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x53f6dc
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x53f6d9
or dword [ebp + 0x10], edi
jmp 0x53f6dc
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x53f729
cmp eax, 0x10000
je 0x53f715
cmp eax, 0x14000
je 0x53f715
cmp eax, 0x20000
je 0x53f723
cmp eax, 0x24000
je 0x53f723
cmp eax, 0x40000
je 0x53f70f
cmp eax, 0x44000
jne 0x53f72c
mov byte [ebp - 2], 1
jmp 0x53f72c
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x53f72c
mov byte [ebp - 2], 2
jmp 0x53f72c
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x53f784
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x53f784
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x53f8de
cmp eax, 0x80000000
je 0x53f8a5
cmp eax, ecx
jne 0x53f784
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x53f784
cmp eax, 2
jbe 0x53f986
cmp eax, 4
jbe 0x53f877
cmp eax, 5
je 0x53f986
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76ade0]
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 + 0x76ade0]
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 0x53f7f6
test byte [ebp + 0x10], 8
je 0x53f7f6
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76ade0]
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 0x53fa05
test byte [ebp + 0x10], 1
je 0x53fa05
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 [0x71f620]
cmp eax, 0xffffffff
jne 0x53f9ee
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.005282c4
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76ade0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0053dd69
pop ecx
jmp 0x53f56c
push 2
push ebx
push ebx
push dword [esi]
call fcn.0053c978
add esp, 0x10
or eax, edx
je 0x53f986
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0053c978
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x53f666
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0053d56c
add esp, 0xc
cmp eax, 0xffffffff
je 0x53f666
cmp eax, 2
je 0x53f92a
cmp eax, 3
jne 0x53f978
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x53f92a
mov byte [ebp - 2], 1
jmp 0x53f784
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x53f784
cmp eax, 2
jbe 0x53f986
cmp eax, 4
ja 0x53f77b
push 2
push ebx
push ebx
push dword [esi]
call fcn.0053c978
add esp, 0x10
or eax, edx
je 0x53f986
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0053c978
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x53f784
jmp 0x53f666
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x53f952
push dword [esi]
call fcn.00530529
pop ecx
call fcn.0052829e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x53fa07
cmp eax, 0xfeff
jne 0x53f978
push ebx
push 2
push dword [esi]
call fcn.00530b86
add esp, 0xc
cmp eax, 0xffffffff
je 0x53f666
mov byte [ebp - 2], 2
jmp 0x53f784
push ebx
push ebx
push dword [esi]
call fcn.00530b86
add esp, 0xc
jmp 0x53f91c
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x53f9a6
dec eax
jne 0x53f784
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x53f9b4
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.0053033f
add esp, 0xc
cmp eax, 0xffffffff
je 0x53f9da
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x53f9b4
jmp 0x53f784
push dword [esi]
call fcn.00530529
pop ecx
call fcn.0052829e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x53fa07
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76ade0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret