QVMDisas.py

[Macpunk]

My first QVM disassembler sucked, so I made this one. I had a lot of fun writing it.

Written in Python and relies on sys, os, struct, and re modules. I'm not sure of the minimum Python version required. I know it works on 2.5.1.

Command list...

	asys <num> <name>         - Add system call <num> with name <name>.
	dis <name>                - Alias for disn.
	disa <address>            - Disassemble procedure containing address <address>.
	disi <instructionNumber>  - Disassemble procedure containing instruction number <instructionNumber>.
	disn <regex>              - Disassemble procedure matching regular expression <regex>.
	dump <file>               - Dump detailed disassembly to file <file>
	header                    - Print readable form of the QVM header.
	help                      - Print this help message.
	info <name>               - Print information known for procedure <name>.
	lsys                      - List currently known system calls.
	name <origName> <newName> - Rename procedure <origName> to <newName>.
	osys <file>               - Open file <file> specifying system calls using equ statements.
	quit                      - Quit QVMDisas.py. Ctrl-D also quits.
	sref <regex>              - Print all procedures referencing strings matching regular expression <regex>.
	ssys <file>               - Save currently known system calls to file <file> using equ statements.

Download: http://i.imagehost.org/download/0641/QVMDisas

On a side note, I've no experience in this area, but I think writing a QVM decompiler wouldn't be too hard... Not a perfect one that compiles resulting code easily, but I think it would be feasible.

Greets and credits:
ascii, qvmkanker
#ecc for being cool so far
#game-deception
All of GD.
If I left you out let me know.

Licensed under WTFPLv2.

Enjoy,
Macpunk

[Macpunk]

Omg, I failed hard with the opcode table. That's what I get for coding late at night. Basically, the GEF, LEF, etc instructions were reading floating point values when they should've been reading an unsigned int. Woops. This makes the disassemblies look really....really fucking retarded.

Redownload for a version that makes sense. This actually makes the tool useful!

Apologies,
Macpunk

[grosbedo]

Hello,

Ive updated this Python script and fixed some bugs, so now it fully works on OpenArena v0.7.x and v0.8.x. This is old news, Ive made it in 2010-04-12 but never found the time to post it. This script enabled me to hack GTV a lot and crack the CPMA maps check.

Script is attached to this post here :
QVMDisas_v0.3.zip

Or download the script, GTV hack and cracked CPMA mod here :

http://oa-cl.ucoz.org/forum/75-503-1

If I get enough spare time, I hope to make a tutorial about mod debugging and cracking one day.

Please consider my posting as a contribution and a way to thank MacPunk for his great work.

For the latest version from MacPunk (made after my update) coded in Google's Go, please see :

http://www.gamedeception.net/content/186-QVMDisas.go

[kingorgy96]

Hello,

Ive updated this Python script and fixed some bugs, so now it fully works on OpenArena v0.7.x and v0.8.x. This is old news, Ive made it in 2010-04-12 but never found the time to post it. This script enabled me to hack GTV a lot and crack the CPMA maps check.

Script is attached to this post here :
QVMDisas_v0.3.zip

Or download the script, GTV hack and cracked CPMA mod here :

http://oa-cl.ucoz.org/forum/75-503-1

If I get enough spare time, I hope to make a tutorial about mod debugging and cracking one day.

Please consider my posting as a contribution and a way to thank MacPunk for his great work.

For the latest version from MacPunk (made after my update) coded in Google's Go, please see :

http://www.gamedeception.net/content/186-QVMDisas.go

yes i think we know it already now that's not needed to post it in all QVM threads

[grosbedo]

I like what is structured and I noticed that many users were lost, I thought this could help to link the threads.

[LuxXx]

What do I have to do if i get this error: "Invalid QVM file: length xxx not sane" ?

[grosbedo]

What do I have to do if i get this error: "Invalid QVM file: length xxx not sane" ?

Normally you shouldn't have this problem with my modified version.