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[botmail242]

Posted on August 05, 2016 at 19:06

I am looking over some assembly code and I came across this:

LDR R3, =0xCADEBABA

I have looked everywhere and I cannot find what 0xCADEBABA stores or what its relevance is. I have checked STM32F4 ref manual, datasheet, programming manual, and m4 programming manual...

[Tesla DeLorean]

Posted on August 05, 2016 at 19:20

Given the minimal context, it would look to be a magic value, used as a marker or unlock code. Like 0xDEADBEEF, 0xC0FFEE02, etc

[Tesla DeLorean]

Posted on August 05, 2016 at 19:22

I have looked everywhere and I cannot find what 0xCADEBABA stores or what its relevance is.

You're going to make for rather a hopeless hacker...

http://www.google.com/search?q=0xCADEBABA

[botmail242]

Posted on August 05, 2016 at 19:43

I apologize, I'm new to RE and I'm practicing with code samples I wrote. I Googled it before I asked this question and saw it was defined as

BSS_GUARD_BAD_VALUE but I didn't know what the GUARD_BAD_VALUE part meant. Now that you mention magic numbers it is very clear! Thanks for the timely response.