jE!'s jE!'s_PUZZLE06.zip
| Download jE!__s_PUZZLE06.zip, 822 b (password: crackmes.de) Browse contents of jE!__s_PUZZLE06.zip TRY change only 1(one) byte!!!!!!!!
Difficulty: 3 - Getting harder | Send a message to jE! » View profile of jE! » |
Solutions
Solution by kaspar, published 10. dec, 2007; download (1 kb), password: crackmes.de or browse.
kaspar has rated this crackme as awesome.
Discussion and comments
| jE! Author 24. Nov 2007 | Forgot to mention: this is mind-challange about opcode transformation, NEVER mind BrutusForzing! suggested tool: HIEW.. other 1byte puzzles with solves are aviable on msg-boards. |
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| cyclops Moderator 24. Nov 2007 | NIce exit code jE! |
| halsten 25. Nov 2007 | Simply interesting, nice to find something innovative after all. :) |
| w00b 25. Nov 2007 | would changing 2 number values in eax count as only changing 1 byte? |
| jE! Author 26. Nov 2007 | change (PATCH) only 1 byte in CODE of progii. |
| Zaphod 26. Nov 2007 | A 2-byte patch is easy, but a 1-byte patch? - I'm still scratching my head !! |
| asiiik 26. Nov 2007 | OMG.. it's only 2kb and it's ripping my head off.. still looking for the right byte to patch.. aaaaargh!! has anyone sent a solution for this yet? i must send one before anyone does. |
| IMPosTOR 26. Nov 2007 | find how can change eax value :D |
| Abdul 27. Nov 2007 | Dang! Did someone nail it? |
| DigitalAcid 28. Nov 2007 | Damn, I also found a 2-byte patch, but got no idea for 1 byte atm and i tried some stuff already. |
| jE! Author 28. Nov 2007 | u must understand method: METHAMORPHOSE of opcode! |
| DeepBlue 28. Nov 2007 | I guess there is a reason you chose THAT Imagebase, right? :P |
| jE! Author 29. Nov 2007 | ;; heeeey! maybeeeeeee |
| DeepBlue 29. Nov 2007 | Can you give a hint, what the byte is? Opcode, MODR/M, SIB, rel32, disp32....? Or maybe wait a little bit longer and give that as a hint. |
| jE! Author 29. Nov 2007 | pfirst byte of instruction. |
| DigitalAcid 01. Dec 2007 | Anyone found something yet ? I guess this is for the more advanced people. I mean, some opcodes can be replaced by simpler/shorter ones and i think that's what we will have to find out. I found lots of ways to change the string, but not through a 1 byte patch :(. |
| Zaphod 02. Dec 2007 | DigitalAcid, I can't find it either - I'm still working on it, but I'll probably just have to wait for someone to strike gold... |
| jE! Author 02. Dec 2007 | guys, i suggested in 1st post, look at my other 1byte puzzles, for better understanding; wait, i will post them now on cracmes-msgBoard |
| jE! Author 02. Dec 2007 | posted: http://www.reverse-engineering.net/viewtopic.php?p=41228 |
| DigitalAcid 03. Dec 2007 | Thx for those puzzles. |
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