Function at 0x508757
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 0x508786
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x508790
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6e61
test eax, eax
pop ecx
je 0x5087ab
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee8ee
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f471f
test eax, eax
pop ecx
je 0x5087c6
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee8ee
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x5087e3
test ecx, 0x74000
jne 0x5087df
cmp dword [ebp - 0x24], eax
je 0x5087e3
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x50883d
dec eax
je 0x508827
dec eax
je 0x508822
call fcn.004f5d43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5d30
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004ee9ea
add esp, 0x14
jmp 0x508df0
mov dword [ebp - 8], edx
jmp 0x508840
test cl, 8
je 0x508834
test ecx, 0x70000
jne 0x508822
mov dword [ebp - 8], 0x40000000
jmp 0x508840
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x508881
sub eax, ecx
je 0x508878
sub eax, ecx
je 0x50886f
sub eax, ecx
je 0x508866
sub eax, 0x40
jne 0x5087fc
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x508884
mov dword [ebp - 0x10], 3
jmp 0x508884
mov dword [ebp - 0x10], 2
jmp 0x508884
mov dword [ebp - 0x10], 1
jmp 0x508884
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 0x5088d7
je 0x5088ce
cmp eax, ebx
je 0x5088ce
cmp eax, edi
je 0x5088c5
cmp eax, 0x200
je 0x50894a
cmp eax, 0x300
jne 0x5087fc
mov dword [ebp - 0x14], 2
jmp 0x5088f4
mov dword [ebp - 0x14], 4
jmp 0x5088f4
mov dword [ebp - 0x14], 3
jmp 0x5088f4
cmp eax, 0x500
je 0x5088ed
cmp eax, 0x600
je 0x50894a
cmp eax, edx
jne 0x5087fc
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x508918
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x508918
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x508934
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x508934
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x50893d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x508953
or dword [ebp - 0xc], 0x8000000
jmp 0x50895e
mov dword [ebp - 0x14], 5
jmp 0x5088f4
test al, 0x10
je 0x50895e
or dword [ebp - 0xc], 0x10000000
call fcn.004f1beb
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x508984
call fcn.004f5d43
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5d30
mov dword [eax], 0x18
jmp 0x508a12
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 0x508a1e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x5089ea
test byte [ebp + 0x10], 1
je 0x5089ea
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 0x508a1e
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.004f5d56
pop ecx
call fcn.004f5d30
mov eax, dword [eax]
jmp 0x508eac
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x508a6f
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.004f5d56
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x508a12
call fcn.004f5d30
mov dword [eax], 0xd
jmp 0x508a12
cmp eax, 2
jne 0x508a7a
or byte [ebp - 1], 0x40
jmp 0x508a83
cmp eax, 3
jne 0x508a83
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f19ba
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 0x508b59
test cl, 0x80
je 0x508c29
test byte [ebp + 0x10], 2
je 0x508b59
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc1ec
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x508b17
call fcn.004f5d43
cmp dword [eax], 0x83
je 0x508b59
push dword [esi]
call fcn.004fbdcb
jmp 0x508a11
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fd1b5
add esp, 0xc
test eax, eax
jne 0x508b49
cmp word [ebp - 0x2c], 0x1a
jne 0x508b49
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f1294
add esp, 0xc
cmp eax, edi
je 0x508b0b
push ebx
push ebx
push dword [esi]
call fcn.004fc1ec
add esp, 0xc
cmp eax, edi
je 0x508b0b
test byte [ebp - 1], 0x80
je 0x508c29
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508b81
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x508b7e
or dword [ebp + 0x10], edi
jmp 0x508b81
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508bce
cmp eax, 0x10000
je 0x508bba
cmp eax, 0x14000
je 0x508bba
cmp eax, 0x20000
je 0x508bc8
cmp eax, 0x24000
je 0x508bc8
cmp eax, 0x40000
je 0x508bb4
cmp eax, 0x44000
jne 0x508bd1
mov byte [ebp - 2], 1
jmp 0x508bd1
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508bd1
mov byte [ebp - 2], 2
jmp 0x508bd1
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x508c29
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x508c29
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508d83
cmp eax, 0x80000000
je 0x508d4a
cmp eax, ecx
jne 0x508c29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508c29
cmp eax, 2
jbe 0x508e2b
cmp eax, 4
jbe 0x508d1c
cmp eax, 5
je 0x508e2b
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 0x508c9b
test byte [ebp + 0x10], 8
je 0x508c9b
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 0x508eaa
test byte [ebp + 0x10], 1
je 0x508eaa
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 0x508e93
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5d56
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.004f1a37
pop ecx
jmp 0x508a11
push 2
push ebx
push ebx
push dword [esi]
call fcn.005024de
add esp, 0x10
or eax, edx
je 0x508e2b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005024de
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x508b0b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd1b5
add esp, 0xc
cmp eax, 0xffffffff
je 0x508b0b
cmp eax, 2
je 0x508dcf
cmp eax, 3
jne 0x508e1d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508dcf
mov byte [ebp - 2], 1
jmp 0x508c29
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x508c29
cmp eax, 2
jbe 0x508e2b
cmp eax, 4
ja 0x508c20
push 2
push ebx
push ebx
push dword [esi]
call fcn.005024de
add esp, 0x10
or eax, edx
je 0x508e2b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.005024de
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x508c29
jmp 0x508b0b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x508df7
push dword [esi]
call fcn.004fbdcb
pop ecx
call fcn.004f5d30
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x508eac
cmp eax, 0xfeff
jne 0x508e1d
push ebx
push 2
push dword [esi]
call fcn.004fc1ec
add esp, 0xc
cmp eax, 0xffffffff
je 0x508b0b
mov byte [ebp - 2], 2
jmp 0x508c29
push ebx
push ebx
push dword [esi]
call fcn.004fc1ec
add esp, 0xc
jmp 0x508dc1
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x508e4b
dec eax
jne 0x508c29
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x508e59
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.00502402
add esp, 0xc
cmp eax, 0xffffffff
je 0x508e7f
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x508e59
jmp 0x508c29
push dword [esi]
call fcn.004fbdcb
pop ecx
call fcn.004f5d30
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x508eac
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