Function at 0x583316
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
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 - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x583345
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x58334f
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00587062
test eax, eax
pop ecx
je 0x58336a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0056987e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.0056d687
test eax, eax
pop ecx
je 0x583385
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0056987e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x5833a2
test ecx, 0x74000
jne 0x58339e
cmp dword [ebp - 0x24], eax
je 0x5833a2
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, connect
je 0x5833fc
dec eax
je 0x5833e6
dec eax
je 0x5833e1
call fcn.0056f194
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0056f181
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0056997a
add esp, 0x14
jmp 0x5839ae
mov dword [ebp - 8], edx
jmp 0x5833ff
test cl, 8
je 0x5833f3
test ecx, 0x70000
jne 0x5833e1
mov dword [ebp - 8], 0x40000000
jmp 0x5833ff
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x583440
sub eax, ecx
je 0x583437
sub eax, ecx
je 0x58342e
sub eax, ecx
je 0x583425
sub eax, 0x40
jne 0x5833bb
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x583443
mov dword [ebp - 0x10], 3
jmp 0x583443
mov dword [ebp - 0x10], 2
jmp 0x583443
mov dword [ebp - 0x10], 1
jmp 0x583443
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 0x583496
je 0x58348d
cmp eax, ebx
je 0x58348d
cmp eax, edi
je 0x583484
cmp eax, 0x200
je 0x583509
cmp eax, 0x300
jne 0x5833bb
mov dword [ebp - 0x14], 2
jmp 0x5834b3
mov dword [ebp - 0x14], 4
jmp 0x5834b3
mov dword [ebp - 0x14], 3
jmp 0x5834b3
cmp eax, 0x500
je 0x5834ac
cmp eax, 0x600
je 0x583509
cmp eax, edx
jne 0x5833bb
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x5834d7
mov ecx, dword [0x5db11c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x5834d7
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x5834f3
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x5834f3
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x5834fc
or dword [ebp - 0xc], edi
test al, 0x20
je 0x583512
or dword [ebp - 0xc], 0x8000000
jmp 0x58351d
mov dword [ebp - 0x14], 5
jmp 0x5834b3
test al, 0x10
je 0x58351d
or dword [ebp - 0xc], 0x10000000
call fcn.00581883
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x583543
call fcn.0056f194
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0056f181
mov dword [eax], 0x18
jmp 0x5835d1
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
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 0x5835dd
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x5835a9
test byte [ebp + 0x10], 1
je 0x5835a9
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
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 0x5835dd
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x612d20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0056f1a7
pop ecx
call fcn.0056f181
mov eax, dword [eax]
jmp 0x583a6a
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x58362e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x612d20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0056f1a7
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x5835d1
call fcn.0056f181
mov dword [eax], 0xd
jmp 0x5835d1
cmp eax, 2
jne 0x583639
or byte [ebp - 1], 0x40
jmp 0x583642
cmp eax, 3
jne 0x583642
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00581652
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x612d20]
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 + 0x612d20]
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 0x583717
test cl, 0x80
je 0x5837e7
test byte [ebp + 0x10], 2
je 0x583717
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00577881
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x5836d6
call fcn.0056f194
cmp dword [eax], 0x83
je 0x583717
push dword [esi]
call fcn.00577ab7
jmp 0x5835d0
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.0057ba1a
add esp, 0xc
test eax, eax
jne 0x583707
cmp byte [ebp - 4], 0x1a
jne 0x583707
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.00586df2
add esp, 0xc
cmp eax, edi
je 0x5836ca
push ebx
push ebx
push dword [esi]
call fcn.00577881
add esp, 0xc
cmp eax, edi
je 0x5836ca
test byte [ebp - 1], 0x80
je 0x5837e7
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x58373f
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x58373c
or dword [ebp + 0x10], edi
jmp 0x58373f
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x58378c
cmp eax, 0x10000
je 0x583778
cmp eax, 0x14000
je 0x583778
cmp eax, 0x20000
je 0x583786
cmp eax, 0x24000
je 0x583786
cmp eax, 0x40000
je 0x583772
cmp eax, 0x44000
jne 0x58378f
mov byte [ebp - 2], 1
jmp 0x58378f
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x58378f
mov byte [ebp - 2], 2
jmp 0x58378f
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5837e7
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5837e7
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x583941
cmp eax, 0x80000000
je 0x583908
cmp eax, ecx
jne 0x5837e7
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5837e7
cmp eax, 2
jbe 0x5839e9
cmp eax, 4
jbe 0x5838da
cmp eax, 5
je 0x5839e9
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x612d20]
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 + 0x612d20]
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 0x583859
test byte [ebp + 0x10], 8
je 0x583859
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x612d20]
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 0x583a68
test byte [ebp + 0x10], 1
je 0x583a68
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x583a51
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0056f1a7
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x612d20]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.005816cf
pop ecx
jmp 0x5835d0
push 2
push ebx
push ebx
push dword [esi]
call fcn.0058126c
add esp, 0x10
or eax, edx
je 0x5839e9
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0058126c
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x5836ca
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0057ba1a
add esp, 0xc
cmp eax, 0xffffffff
je 0x5836ca
cmp eax, 2
je 0x58398d
cmp eax, 3
jne 0x5839db
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x58398d
mov byte [ebp - 2], 1
jmp 0x5837e7
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5837e7
cmp eax, 2
jbe 0x5839e9
cmp eax, 4
ja 0x5837de
push 2
push ebx
push ebx
push dword [esi]
call fcn.0058126c
add esp, 0x10
or eax, edx
je 0x5839e9
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0058126c
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5837e7
jmp 0x5836ca
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x5839b5
push dword [esi]
call fcn.00577ab7
pop ecx
call fcn.0056f181
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x583a6a
cmp eax, 0xfeff
jne 0x5839db
push ebx
push 2
push dword [esi]
call fcn.00577881
add esp, 0xc
cmp eax, 0xffffffff
je 0x5836ca
mov byte [ebp - 2], 2
jmp 0x5837e7
push ebx
push ebx
push dword [esi]
call fcn.00577881
add esp, 0xc
jmp 0x58397f
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x583a09
dec eax
jne 0x5837e7
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x583a17
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.00577372
add esp, 0xc
cmp eax, 0xffffffff
je 0x583a3d
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x583a17
jmp 0x5837e7
push dword [esi]
call fcn.00577ab7
pop ecx
call fcn.0056f181
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x583a6a
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x612d20]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret