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IT Security and Insecurity Portal |
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Lookin for linux cracking tuts |
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 Posted: Mon Jan 23, 2006 11:08 pm |
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| fizzi |
| Advanced user |
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| Joined: Sep 14, 2005 |
| Posts: 55 |
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hi everybody
everyone knows cracking in windows. but cracking programs under linux ... somehow impossible without right knowledge.
there is a game out there ... which has a stupid handbook-page/2letters protection. so ... i guess softice doesn't work under linux ... 
it's a statically linked file ... how do i disassembly it first and then debug it step by step?
(NO, GDB DOES WORK SHIT HERE)  |
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Re: Lookin for linux cracking tuts |
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| Posted: Tue Jan 24, 2006 12:43 pm |
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| erg0t |
| Valuable expert |
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| Joined: Apr 08, 2005 |
| Posts: 55 |
| Location: Uruguay |
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| fizzi wrote: | hi everybody
everyone knows cracking in windows. but cracking programs under linux ... somehow impossible without right knowledge.
there is a game out there ... which has a stupid handbook-page/2letters protection. so ... i guess softice doesn't work under linux ...
it's a statically linked file ... how do i disassembly it first and then debug it step by step?
(NO, GDB DOES WORK SHIT HERE) |
yes gdb sucks for re but is still usable, try strace, it will show you how syscalls are called in a clean way, the other think you can do is disassemble the file, try Bastard, or more simple stuff like HT, objdump maybe... |
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| Posted: Tue Jan 24, 2006 6:32 pm |
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| fizzi |
| Advanced user |
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| Joined: Sep 14, 2005 |
| Posts: 55 |
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damn
the only one i got working now is ldasm. all other pograms didn't want to compile (because of severail things, i guess my amd64 arch is problem #1), but also the compiled programs i downloaded didn't want to work. (missing own libs and stuff)
argh
anway ... what is HT? |
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| Posted: Tue Jan 24, 2006 6:38 pm |
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| fizzi |
| Advanced user |
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| Joined: Sep 14, 2005 |
| Posts: 55 |
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mhm
i tried strace ... but it does not get any output itself from the program. perhaps the coders used a workaround to hide their code from beeing traced by such simple standard linux tools.
| Quote: | execve("./program.bin.x86", ["program.bin.x86"], [/* XX vars */]) = 0
--- SIGTERM (Terminated) @ 0 (0) ---
PROGRAM OUTPUT BLA BLA BLA
...
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| Posted: Tue Jan 24, 2006 11:08 pm |
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| erg0t |
| Valuable expert |
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| Joined: Apr 08, 2005 |
| Posts: 55 |
| Location: Uruguay |
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| fizzi wrote: | mhm
i tried strace ... but it does not get any output itself from the program. perhaps the coders used a workaround to hide their code from beeing traced by such simple standard linux tools.
| Quote: | execve("./program.bin.x86", ["program.bin.x86"], [/* XX vars */]) = 0
--- SIGTERM (Terminated) @ 0 (0) ---
PROGRAM OUTPUT BLA BLA BLA
...
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HT is an editor and disassembler that suports, ELF, PE, etc
try strace -f
If still doesn't work is becuase there is some ant-dbg trick, like using ptrace or sending itself a sigtrap. |
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| Posted: Tue Jan 24, 2006 11:27 pm |
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| fizzi |
| Advanced user |
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| Joined: Sep 14, 2005 |
| Posts: 55 |
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strace -f didn't even helped in that case.
but objdump -d is doing a good job so far. |
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