'%' can make IDA crash

[cnitlrt]

env

python 3.9.9
IDA: 7.6

IDA Pro crashes when I type the '%' character in the Assemble window

[rohitab]

This also happens when the line starts with a \ character. From what I see, it's stuck in an infinite loop inside keystone.dll. You can fix the issue by patching plugins\patching\keystone\keystone.dll with the following change, using any Hex Editor.

File Offset	Original Bytes	Patched Bytes
3604C	0F 84 83	E9 84 00

Verify the MD5 hash of keystone.dll before and after the patch, to ensure that the patch is applied correctly.

MD5 Before Patch	MD5 After Patch
f8960c53f18607ceeaeb167bd6fc29f7	d89230f4bda17a63b51591c2a6d06af1

It's not the ideal fix, but it does resolve the issue.

NOTE: This patch is only for v0.1.2 for Windows.