Jakarta
50 points Medium

This challenge combines forensics, crypto and programming. A 4096 bit RSA key is used to encrypt the flag and both the encrypted key and the encrypted flag are hidden inside the jpeg. Python scripts are also provided to help decrypt the RSA key which is xor'd with bytes from the jpeg. These same Python scripts can be used as part of solving my 100 point Scope challenge. Good Luck! You may want to solve my MountainMan challenge first if you are having difficulty finding the key and flag hidden in the jpeg.

Jakarta.jpg
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Forensics ยท kcbowhunter
87 solves
Rating 4.71
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drackout

1 year ago

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Where find a cipher text on this image? @kcbowhunter help mee

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kcbowhunter

1 year ago

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you can google the solution

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drackout

1 year ago

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there's another hint to find cipher text?

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kcbowhunter

1 year ago

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https://github.com/onealmond/hacking-lab/blob/master/ctflearn/jakarta/writeup.md

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Varius93

2 years ago

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Varius93

2 years ago

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6cyril

2 years ago

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Mike_Root

3 years ago

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I found this to be very difficult. Anyone attempting this should have a good understanding of all topics mentioned in description. Definitely one of my favourites. Thanks for awesome challenge.

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feboyfierlyan

3 years ago

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i get trolled, haha nice one, rot1 is lots of fun!

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hrushikesh4869

3 years ago

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kcbowhunter

3 years ago

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hrushikesh4869

3 years ago

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kcbowhunter

3 years ago

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Can you send me a message on discord so we can discuss?

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