Dead end? Go to the Training: Warchall - 7 Tropical Fruits challenge
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Dead end?
Aug 18, 2023 - 06:10:58 (253d 16h)
Aug 18, 2023 - 06:10:58 (253d 16h)
I've been trying to solve this challenge for some time but I've ran out of ideas. The elf x86-64 binary is position independent so I can't predict or bruteforce the addresses of the gadgets needed for ROP or stack juggling since there is no information leak, Even though the stack is executable I didn't find any way to redirect the execution to some useful address on the stack. What am I missing?
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RE: Dead end?
Aug 21, 2023 - 22:13:18 (250d 26m)
Aug 21, 2023 - 22:13:18 (250d 26m)
The challenge hasn't been solved since the server move, so it might be broken -- haven't checked tho.
Can anyone confirm if it is working (or not)?
Can anyone confirm if it is working (or not)?
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RE: Dead end?
Jan 19, 2024 - 14:46:56 (99d 6h)
Jan 19, 2024 - 14:46:56 (99d 6h)
Quote from cyberracAug 18, 2023 - 06:10:58
I've been trying to solve this challenge for some time but I've ran out of ideas. The elf x86-64 binary is position independent so I can't predict or bruteforce the addresses of the gadgets needed for ROP or stack juggling since there is no information leak, Even though the stack is executable I didn't find any way to redirect the execution to some useful address on the stack. What am I missing?
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RE: Dead end?
Jan 26, 2024 - 15:04:45 (92d 6h)
Jan 26, 2024 - 15:04:45 (92d 6h)
We changed the challenge a bit to reflect the behavior of the original binary. This also gives as the opportunity for a sequel. ;)
Happy challenging!
Happy challenging!
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