Function at 0x53ff6b
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 0x53ff9a
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x53ffa4
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00542859
test eax, eax
pop ecx
je 0x53ffbf
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0052370b
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0052e4e3
test eax, eax
pop ecx
je 0x53ffda
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0052370b
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x53fff7
test ecx, 0x74000
jne 0x53fff3
cmp dword [ebp - 0x24], eax
je 0x53fff7
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x540051
dec eax
je 0x54003b
dec eax
je 0x540036
call fcn.0052e7a4
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0052e791
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00523807
add esp, 0x14
jmp 0x540604
mov dword [ebp - 8], edx
jmp method.IEErrorDlgDetect.virtual_8
test cl, 8
je 0x540048
test ecx, 0x70000
jne 0x540036
mov dword [ebp - 8], 0x40000000
jmp method.IEErrorDlgDetect.virtual_8
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x540095
sub eax, ecx
je 0x54008c
sub eax, ecx
je 0x540083
sub eax, ecx
je 0x54007a
sub eax, 0x40
jne 0x540010
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x540098
mov dword [ebp - 0x10], 3
jmp 0x540098
mov dword [ebp - 0x10], 2
jmp 0x540098
mov dword [ebp - 0x10], 1
jmp 0x540098
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 0x5400eb
je 0x5400e2
cmp eax, ebx
je 0x5400e2
cmp eax, edi
je 0x5400d9
cmp eax, 0x200
je 0x54015e
cmp eax, 0x300
jne 0x540010
mov dword [ebp - 0x14], 2
jmp 0x540108
mov dword [ebp - 0x14], 4
jmp 0x540108
mov dword [ebp - 0x14], 3
jmp 0x540108
cmp eax, 0x500
je 0x540101
cmp eax, 0x600
je 0x54015e
cmp eax, edx
jne 0x540010
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x54012c
mov ecx, dword [0x67d124]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x54012c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x540148
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x540148
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x540151
or dword [ebp - 0xc], edi
test al, 0x20
je 0x540167
or dword [ebp - 0xc], 0x8000000
jmp 0x540172
mov dword [ebp - 0x14], 5
jmp 0x540108
test al, 0x10
je 0x540172
or dword [ebp - 0xc], 0x10000000
call fcn.0053fdcc
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x540198
call fcn.0052e7a4
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0052e791
mov dword [eax], 0x18
jmp 0x540226
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 0x540232
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x5401fe
test byte [ebp + 0x10], 1
je 0x5401fe
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 0x540232
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x67e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0052e7b7
pop ecx
call fcn.0052e791
mov eax, dword [eax]
jmp 0x5406c0
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x540283
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x67e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0052e7b7
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x540226
call fcn.0052e791
mov dword [eax], 0xd
jmp 0x540226
cmp eax, 2
jne 0x54028e
or byte [ebp - 1], 0x40
jmp 0x540297
cmp eax, 3
jne 0x540297
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0053fb9b
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x67e8e0]
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 + 0x67e8e0]
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 0x54036d
test cl, 0x80
je 0x54043d
test byte [ebp + 0x10], 2
je 0x54036d
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.005377c5
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x54032b
call fcn.0052e7a4
cmp dword [eax], 0x83
je 0x54036d
push dword [esi]
call fcn.005360fb
jmp 0x540225
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.0053943a
add esp, 0xc
test eax, eax
jne 0x54035d
cmp word [ebp - 0x2c], 0x1a
jne 0x54035d
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.005425e9
add esp, 0xc
cmp eax, edi
je 0x54031f
push ebx
push ebx
push dword [esi]
call fcn.005377c5
add esp, 0xc
cmp eax, edi
je 0x54031f
test byte [ebp - 1], 0x80
je 0x54043d
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x540395
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x540392
or dword [ebp + 0x10], edi
jmp 0x540395
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x5403e2
cmp eax, 0x10000
je 0x5403ce
cmp eax, 0x14000
je 0x5403ce
cmp eax, 0x20000
je 0x5403dc
cmp eax, 0x24000
je 0x5403dc
cmp eax, 0x40000
je 0x5403c8
cmp eax, 0x44000
jne 0x5403e5
mov byte [ebp - 2], 1
jmp 0x5403e5
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x5403e5
mov byte [ebp - 2], 2
jmp 0x5403e5
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x54043d
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x54043d
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x540597
cmp eax, 0x80000000
je 0x54055e
cmp eax, ecx
jne 0x54043d
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x54043d
cmp eax, 2
jbe 0x54063f
cmp eax, 4
jbe 0x540530
cmp eax, 5
je 0x54063f
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x67e8e0]
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 + 0x67e8e0]
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 0x5404af
test byte [ebp + 0x10], 8
je 0x5404af
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x67e8e0]
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 0x5406be
test byte [ebp + 0x10], 1
je 0x5406be
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 0x5406a7
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0052e7b7
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x67e8e0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0053fc18
pop ecx
jmp 0x540225
push 2
push ebx
push ebx
push dword [esi]
call fcn.0053eab4
add esp, 0x10
or eax, edx
je 0x54063f
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0053eab4
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x54031f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0053943a
add esp, 0xc
cmp eax, 0xffffffff
je 0x54031f
cmp eax, 2
je 0x5405e3
cmp eax, 3
jne 0x540631
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x5405e3
mov byte [ebp - 2], 1
jmp 0x54043d
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x54043d
cmp eax, 2
jbe 0x54063f
cmp eax, 4
ja 0x540434
push 2
push ebx
push ebx
push dword [esi]
call fcn.0053eab4
add esp, 0x10
or eax, edx
je 0x54063f
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0053eab4
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x54043d
jmp 0x54031f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x54060b
push dword [esi]
call fcn.005360fb
pop ecx
call fcn.0052e791
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5406c0
cmp eax, 0xfeff
jne 0x540631
push ebx
push 2
push dword [esi]
call fcn.005377c5
add esp, 0xc
cmp eax, 0xffffffff
je 0x54031f
mov byte [ebp - 2], 2
jmp 0x54043d
push ebx
push ebx
push dword [esi]
call fcn.005377c5
add esp, 0xc
jmp 0x5405d5
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x54065f
dec eax
jne 0x54043d
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x54066d
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.00536e52
add esp, 0xc
cmp eax, 0xffffffff
je 0x540693
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x54066d
jmp 0x54043d
push dword [esi]
call fcn.005360fb
pop ecx
call fcn.0052e791
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5406c0
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x67e8e0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret