Function at 0x508657
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 0x508686
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x508690
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6d61
test eax, eax
pop ecx
je 0x5086ab
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee7ee
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f461c
test eax, eax
pop ecx
je 0x5086c6
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee7ee
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x5086e3
test ecx, 0x74000
jne 0x5086df
cmp dword [ebp - 0x24], eax
je 0x5086e3
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x50873d
dec eax
je 0x508727
dec eax
je 0x508722
call fcn.004f5c43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5c30
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004ee8ea
add esp, 0x14
jmp 0x508cf0
mov dword [ebp - 8], edx
jmp 0x508740
test cl, 8
je 0x508734
test ecx, 0x70000
jne 0x508722
mov dword [ebp - 8], 0x40000000
jmp 0x508740
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x508781
sub eax, ecx
je 0x508778
sub eax, ecx
je 0x50876f
sub eax, ecx
je 0x508766
sub eax, 0x40
jne 0x5086fc
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x508784
mov dword [ebp - 0x10], 3
jmp 0x508784
mov dword [ebp - 0x10], 2
jmp 0x508784
mov dword [ebp - 0x10], 1
jmp 0x508784
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 0x5087d7
je 0x5087ce
cmp eax, ebx
je 0x5087ce
cmp eax, edi
je 0x5087c5
cmp eax, 0x200
je 0x50884a
cmp eax, 0x300
jne 0x5086fc
mov dword [ebp - 0x14], 2
jmp 0x5087f4
mov dword [ebp - 0x14], 4
jmp 0x5087f4
mov dword [ebp - 0x14], 3
jmp 0x5087f4
cmp eax, 0x500
je 0x5087ed
cmp eax, 0x600
je 0x50884a
cmp eax, edx
jne 0x5086fc
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x508818
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x508818
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x508834
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x508834
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x50883d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x508853
or dword [ebp - 0xc], 0x8000000
jmp 0x50885e
mov dword [ebp - 0x14], 5
jmp 0x5087f4
test al, 0x10
je 0x50885e
or dword [ebp - 0xc], 0x10000000
call fcn.004f1b3b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x508884
call fcn.004f5c43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5c30
mov dword [eax], 0x18
jmp 0x508912
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 0x50891e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x5088ea
test byte [ebp + 0x10], 1
je 0x5088ea
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 0x50891e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5c56
pop ecx
call fcn.004f5c30
mov eax, dword [eax]
jmp 0x508dac
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x50896f
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5c56
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x508912
call fcn.004f5c30
mov dword [eax], 0xd
jmp 0x508912
cmp eax, 2
jne 0x50897a
or byte [ebp - 1], 0x40
jmp 0x508983
cmp eax, 3
jne 0x508983
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f190a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x508a59
test cl, 0x80
je 0x508b29
test byte [ebp + 0x10], 2
je 0x508a59
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc0ec
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x508a17
call fcn.004f5c43
cmp dword [eax], 0x83
je 0x508a59
push dword [esi]
call fcn.004fbccb
jmp 0x508911
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fd0b5
add esp, 0xc
test eax, eax
jne 0x508a49
cmp word [ebp - 0x2c], 0x1a
jne 0x508a49
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f11e4
add esp, 0xc
cmp eax, edi
je 0x508a0b
push ebx
push ebx
push dword [esi]
call fcn.004fc0ec
add esp, 0xc
cmp eax, edi
je 0x508a0b
test byte [ebp - 1], 0x80
je 0x508b29
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508a81
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x508a7e
or dword [ebp + 0x10], edi
jmp 0x508a81
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508ace
cmp eax, 0x10000
je 0x508aba
cmp eax, 0x14000
je 0x508aba
cmp eax, 0x20000
je 0x508ac8
cmp eax, 0x24000
je 0x508ac8
cmp eax, 0x40000
je 0x508ab4
cmp eax, 0x44000
jne 0x508ad1
mov byte [ebp - 2], 1
jmp 0x508ad1
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508ad1
mov byte [ebp - 2], 2
jmp 0x508ad1
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x508b29
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x508b29
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508c83
cmp eax, 0x80000000
je 0x508c4a
cmp eax, ecx
jne 0x508b29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508b29
cmp eax, 2
jbe 0x508d2b
cmp eax, 4
jbe 0x508c1c
cmp eax, 5
je 0x508d2b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x508b9b
test byte [ebp + 0x10], 8
je 0x508b9b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 0x508daa
test byte [ebp + 0x10], 1
je 0x508daa
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 0x508d93
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5c56
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f1987
pop ecx
jmp 0x508911
push 2
push ebx
push ebx
push dword [esi]
call fcn.005023de
add esp, 0x10
or eax, edx
je 0x508d2b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005023de
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x508a0b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd0b5
add esp, 0xc
cmp eax, 0xffffffff
je 0x508a0b
cmp eax, 2
je 0x508ccf
cmp eax, 3
jne 0x508d1d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508ccf
mov byte [ebp - 2], 1
jmp 0x508b29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508b29
cmp eax, 2
jbe 0x508d2b
cmp eax, 4
ja 0x508b20
push 2
push ebx
push ebx
push dword [esi]
call fcn.005023de
add esp, 0x10
or eax, edx
je 0x508d2b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005023de
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x508b29
jmp 0x508a0b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x508cf7
push dword [esi]
call fcn.004fbccb
pop ecx
call fcn.004f5c30
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x508dac
cmp eax, 0xfeff
jne 0x508d1d
push ebx
push 2
push dword [esi]
call fcn.004fc0ec
add esp, 0xc
cmp eax, 0xffffffff
je 0x508a0b
mov byte [ebp - 2], 2
jmp 0x508b29
push ebx
push ebx
push dword [esi]
call fcn.004fc0ec
add esp, 0xc
jmp 0x508cc1
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x508d4b
dec eax
jne 0x508b29
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x508d59
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.00502302
add esp, 0xc
cmp eax, 0xffffffff
je 0x508d7f
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x508d59
jmp 0x508b29
push dword [esi]
call fcn.004fbccb
pop ecx
call fcn.004f5c30
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x508dac
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret