Function at 0x42d126
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 0x42d155
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x42d15f
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0042b750
test eax, eax
pop ecx
je 0x42d17a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00415864
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0041b88b
test eax, eax
pop ecx
je 0x42d195
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00415864
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x42d1b2
test ecx, 0x74000
jne 0x42d1ae
cmp dword [ebp - 0x24], eax
je 0x42d1b2
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x42d20c
dec eax
je 0x42d1f6
dec eax
je 0x42d1f1
call fcn.00419d03
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00419cf0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00415960
add esp, 0x14
jmp 0x42d7bf
mov dword [ebp - 8], edx
jmp 0x42d20f
test cl, 8
je 0x42d203
test ecx, 0x70000
jne 0x42d1f1
mov dword [ebp - 8], 0x40000000
jmp 0x42d20f
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x42d250
sub eax, ecx
je 0x42d247
sub eax, ecx
je 0x42d23e
sub eax, ecx
je 0x42d235
sub eax, 0x40
jne 0x42d1cb
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x42d253
mov dword [ebp - 0x10], 3
jmp 0x42d253
mov dword [ebp - 0x10], 2
jmp 0x42d253
mov dword [ebp - 0x10], 1
jmp 0x42d253
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 0x42d2a6
je 0x42d29d
cmp eax, ebx
je 0x42d29d
cmp eax, edi
je 0x42d294
cmp eax, 0x200
je 0x42d319
cmp eax, 0x300
jne 0x42d1cb
mov dword [ebp - 0x14], 2
jmp 0x42d2c3
mov dword [ebp - 0x14], 4
jmp 0x42d2c3
mov dword [ebp - 0x14], 3
jmp 0x42d2c3
cmp eax, 0x500
je 0x42d2bc
cmp eax, 0x600
je 0x42d319
cmp eax, edx
jne 0x42d1cb
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x42d2e7
mov ecx, dword [0x44f550]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x42d2e7
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x42d303
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x42d303
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x42d30c
or dword [ebp - 0xc], edi
test al, 0x20
je 0x42d322
or dword [ebp - 0xc], 0x8000000
jmp 0x42d32d
mov dword [ebp - 0x14], 5
jmp 0x42d2c3
test al, 0x10
je 0x42d32d
or dword [ebp - 0xc], 0x10000000
call fcn.0042596e
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x42d353
call fcn.00419d03
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00419cf0
mov dword [eax], 0x18
jmp 0x42d3e1
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 0x42d3ed
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x42d3b9
test byte [ebp + 0x10], 1
je 0x42d3b9
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 0x42d3ed
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x450e80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00419d16
pop ecx
call fcn.00419cf0
mov eax, dword [eax]
jmp 0x42d87b
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x42d43e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x450e80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00419d16
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x42d3e1
call fcn.00419cf0
mov dword [eax], 0xd
jmp 0x42d3e1
cmp eax, 2
jne 0x42d449
or byte [ebp - 1], 0x40
jmp 0x42d452
cmp eax, 3
jne 0x42d452
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0042573d
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x450e80]
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 + 0x450e80]
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 0x42d528
test cl, 0x80
je 0x42d5f8
test byte [ebp + 0x10], 2
je 0x42d528
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0041fc26
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x42d4e6
call fcn.00419d03
cmp dword [eax], 0x83
je 0x42d528
push dword [esi]
call fcn.0041fff4
jmp 0x42d3e0
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.0042231b
add esp, 0xc
test eax, eax
jne 0x42d518
cmp word [ebp - 0x2c], 0x1a
jne 0x42d518
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0042b4e0
add esp, 0xc
cmp eax, edi
je 0x42d4da
push ebx
push ebx
push dword [esi]
call fcn.0041fc26
add esp, 0xc
cmp eax, edi
je 0x42d4da
test byte [ebp - 1], 0x80
je 0x42d5f8
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x42d550
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x42d54d
or dword [ebp + 0x10], edi
jmp 0x42d550
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x42d59d
cmp eax, 0x10000
je 0x42d589
cmp eax, 0x14000
je 0x42d589
cmp eax, 0x20000
je 0x42d597
cmp eax, 0x24000
je 0x42d597
cmp eax, 0x40000
je 0x42d583
cmp eax, 0x44000
jne 0x42d5a0
mov byte [ebp - 2], 1
jmp 0x42d5a0
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x42d5a0
mov byte [ebp - 2], 2
jmp 0x42d5a0
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x42d5f8
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x42d5f8
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x42d752
cmp eax, 0x80000000
je 0x42d719
cmp eax, ecx
jne 0x42d5f8
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x42d5f8
cmp eax, 2
jbe 0x42d7fa
cmp eax, 4
jbe 0x42d6eb
cmp eax, 5
je 0x42d7fa
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x450e80]
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 + 0x450e80]
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 0x42d66a
test byte [ebp + 0x10], 8
je 0x42d66a
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x450e80]
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 0x42d879
test byte [ebp + 0x10], 1
je 0x42d879
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 0x42d862
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00419d16
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x450e80]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004257ba
pop ecx
jmp 0x42d3e0
push 2
push ebx
push ebx
push dword [esi]
call fcn.00424c33
add esp, 0x10
or eax, edx
je 0x42d7fa
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00424c33
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x42d4da
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0042231b
add esp, 0xc
cmp eax, 0xffffffff
je 0x42d4da
cmp eax, 2
je 0x42d79e
cmp eax, 3
jne 0x42d7ec
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x42d79e
mov byte [ebp - 2], 1
jmp 0x42d5f8
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x42d5f8
cmp eax, 2
jbe 0x42d7fa
cmp eax, 4
ja 0x42d5ef
push 2
push ebx
push ebx
push dword [esi]
call fcn.00424c33
add esp, 0x10
or eax, edx
je 0x42d7fa
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00424c33
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x42d5f8
jmp 0x42d4da
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x42d7c6
push dword [esi]
call fcn.0041fff4
pop ecx
call fcn.00419cf0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x42d87b
cmp eax, 0xfeff
jne 0x42d7ec
push ebx
push 2
push dword [esi]
call fcn.0041fc26
add esp, 0xc
cmp eax, 0xffffffff
je 0x42d4da
mov byte [ebp - 2], 2
jmp 0x42d5f8
push ebx
push ebx
push dword [esi]
call fcn.0041fc26
add esp, 0xc
jmp 0x42d790
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x42d81a
dec eax
jne 0x42d5f8
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x42d828
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.0041f717
add esp, 0xc
cmp eax, 0xffffffff
je 0x42d84e
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x42d828
jmp 0x42d5f8
push dword [esi]
call fcn.0041fff4
pop ecx
call fcn.00419cf0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x42d87b
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x450e80]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret