Recklinghausen
20 points Easy

This is the 4th in a series of Beginner Reversing Challenges. If you are new to Reversing, you may want to solve Reykjavik, then Riyadh then Rangoon before solving this challenge. This is a 20 point challenge and is different in two ways from the previous 10 point challenges. Once you get into gdb, b *main+offset is your friend! Good Luck!

Once you solve the challenge you can use the flag to decrypt the souces.zip.enc file provided, if you are interested in seeing the source programs used to create the challenge.

The readme file includes some online resources if you are new to Reversing and Assembler.

Recklinghausen.zip
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Rating 4.76
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Discussion

Goood Challenge

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I did this one and Riga out of order, so Riga took me like 4 days and this one like 30 mins. Wups. Great challenges though. :)

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Yes Recklinghausen was designed to be done before Riga, congrats for hanging in the and solving both!

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Great challenge for beginers! Using GDB seems a good way to solve this chal

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Cool challenge! Thanks for the effort you put in it, it really helped me learn as a beginner :)

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Glad you liked it!

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Nice Challenge Bro!!!!

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Thanks!

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Cool challenge. The reversing challenges don't come easily to me and I had to come back to this one a couple times. Also made a lot of flow charts which helped. gdb is helpful.

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Reversing really is a multi disciplinary skill. Have you tried using Ghidra or the free version of IDA? They can help a lot and for some Reversing challenges provide enough info alone.

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Sweet, thanks. Just got the free IDA. This should make things a bit easier than crunching through gdb.

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