Function at 0x508797
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 0x5087c6
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x5087d0
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6f11
test eax, eax
pop ecx
je 0x5087eb
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee9ae
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f47d0
test eax, eax
pop ecx
je 0x508806
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee9ae
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x508823
test ecx, 0x74000
jne 0x50881f
cmp dword [ebp - 0x24], eax
je 0x508823
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x50887d
dec eax
je 0x508867
dec eax
je 0x508862
call fcn.004f5df3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5de0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004eeaaa
add esp, 0x14
jmp 0x508e30
mov dword [ebp - 8], edx
jmp 0x508880
test cl, 8
je 0x508874
test ecx, 0x70000
jne 0x508862
mov dword [ebp - 8], 0x40000000
jmp 0x508880
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x5088c1
sub eax, ecx
je 0x5088b8
sub eax, ecx
je 0x5088af
sub eax, ecx
je 0x5088a6
sub eax, 0x40
jne 0x50883c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x5088c4
mov dword [ebp - 0x10], 3
jmp 0x5088c4
mov dword [ebp - 0x10], 2
jmp 0x5088c4
mov dword [ebp - 0x10], 1
jmp 0x5088c4
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 0x508917
je 0x50890e
cmp eax, ebx
je 0x50890e
cmp eax, edi
je 0x508905
cmp eax, 0x200
je 0x50898a
cmp eax, 0x300
jne 0x50883c
mov dword [ebp - 0x14], 2
jmp 0x508934
mov dword [ebp - 0x14], 4
jmp 0x508934
mov dword [ebp - 0x14], 3
jmp 0x508934
cmp eax, 0x500
je 0x50892d
cmp eax, 0x600
je 0x50898a
cmp eax, edx
jne 0x50883c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x508958
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x508958
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x508974
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x508974
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x50897d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x508993
or dword [ebp - 0xc], 0x8000000
jmp 0x50899e
mov dword [ebp - 0x14], 5
jmp 0x508934
test al, 0x10
je 0x50899e
or dword [ebp - 0xc], 0x10000000
call fcn.004f1c9b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x5089c4
call fcn.004f5df3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5de0
mov dword [eax], 0x18
jmp 0x508a52
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 0x508a5e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x508a2a
test byte [ebp + 0x10], 1
je 0x508a2a
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 0x508a5e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55eec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5e06
pop ecx
call fcn.004f5de0
mov eax, dword [eax]
jmp 0x508eec
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x508aaf
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55eec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5e06
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x508a52
call fcn.004f5de0
mov dword [eax], 0xd
jmp 0x508a52
cmp eax, 2
jne 0x508aba
or byte [ebp - 1], 0x40
jmp 0x508ac3
cmp eax, 3
jne 0x508ac3
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f1a6a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55eec0]
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 + 0x55eec0]
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 0x508b99
test cl, 0x80
je 0x508c69
test byte [ebp + 0x10], 2
je 0x508b99
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x508b57
call fcn.004f5df3
cmp dword [eax], 0x83
je 0x508b99
push dword [esi]
call fcn.004fbe7b
jmp 0x508a51
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fd265
add esp, 0xc
test eax, eax
jne 0x508b89
cmp word [ebp - 0x2c], 0x1a
jne 0x508b89
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f1344
add esp, 0xc
cmp eax, edi
je 0x508b4b
push ebx
push ebx
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, edi
je 0x508b4b
test byte [ebp - 1], 0x80
je 0x508c69
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508bc1
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x508bbe
or dword [ebp + 0x10], edi
jmp 0x508bc1
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508c0e
cmp eax, 0x10000
je 0x508bfa
cmp eax, 0x14000
je 0x508bfa
cmp eax, 0x20000
je 0x508c08
cmp eax, 0x24000
je 0x508c08
cmp eax, 0x40000
je 0x508bf4
cmp eax, 0x44000
jne 0x508c11
mov byte [ebp - 2], 1
jmp 0x508c11
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508c11
mov byte [ebp - 2], 2
jmp 0x508c11
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x508c69
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x508c69
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508dc3
cmp eax, 0x80000000
je 0x508d8a
cmp eax, ecx
jne 0x508c69
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508c69
cmp eax, 2
jbe 0x508e6b
cmp eax, 4
jbe 0x508d5c
cmp eax, 5
je 0x508e6b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
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 + 0x55eec0]
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 0x508cdb
test byte [ebp + 0x10], 8
je 0x508cdb
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
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 0x508eea
test byte [ebp + 0x10], 1
je 0x508eea
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 0x508ed3
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5e06
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f1ae7
pop ecx
jmp 0x508a51
push 2
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
or eax, edx
je 0x508e6b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00502520
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x508b4b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd265
add esp, 0xc
cmp eax, 0xffffffff
je 0x508b4b
cmp eax, 2
je 0x508e0f
cmp eax, 3
jne 0x508e5d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508e0f
mov byte [ebp - 2], 1
jmp 0x508c69
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508c69
cmp eax, 2
jbe 0x508e6b
cmp eax, 4
ja 0x508c60
push 2
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
or eax, edx
je 0x508e6b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x508c69
jmp 0x508b4b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x508e37
push dword [esi]
call fcn.004fbe7b
pop ecx
call fcn.004f5de0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x508eec
cmp eax, 0xfeff
jne 0x508e5d
push ebx
push 2
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, 0xffffffff
je 0x508b4b
mov byte [ebp - 2], 2
jmp 0x508c69
push ebx
push ebx
push dword [esi]
call fcn.004fc29c
add esp, 0xc
jmp 0x508e01
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x508e8b
dec eax
jne 0x508c69
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x508e99
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.00502444
add esp, 0xc
cmp eax, 0xffffffff
je 0x508ebf
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x508e99
jmp 0x508c69
push dword [esi]
call fcn.004fbe7b
pop ecx
call fcn.004f5de0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x508eec
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret