First in world self-made client to Skype Network based on reversing original Skype 5.5 client.
For now, only receiving and sending messages are supported.
Try to compile it with Visual Studio 2010 and test by youself or use already compiled binaries.
LGPL 3.0
A commercial license is also avaiable on request.
Program tested, all function still working OK.
Program still working OK.
Some additional info on usage:
If you got this error on black console:
UIC_CRC = 5E8EBAE5
pkt block crc32=00009C54
relay_connect_mode = 1
LOCAL_SESSION_ID_RELAY = 0x00002619
total=0x00004C32
last2b=0x0000D066
encode len: 0x0000044A
And this error in "Debug Data" area:
Message send failed. Ret code:-1
Screenshot: http://epycs.ru/pics/cred_err.png
Then try to remove a_cred.txt file, close program and run again. Its some bug with bugged credentials. Which happens from time to time.
- Contact list function working again
Just check my program today. All functions working well, for now.
I guess, they decide to enable contact-list event servers for users. Good decision.
- Load contact list function stop working
Microsoft-Skype do something very weird with contact-list event servers. Like disable it for all users. I try to login using latests 7.27.66.101 skype version for windows with empty profile and dont get back my contact list at all. Hm... But, anyway, its okay. This is format for contact list file (contacts.txt) used in my app, just put it in same dir and add yours skypeusers manually:
u/skypeuser1
u/skypeuser2
u/skypeuser3
u/skypeuser4
u/skypeuser5
And so one.
The README should clearly state:
- whether or not this client is a complete re-implementation
- whether or not it includes disassembled code from the other Skype clients
- whether or not it is a clean-room reverse-engineered code, like Wine/ReactOS
- why the specified license is valid and legal to use for the project
- what are the legal complications, if any, to developing the project and to using it personally or commercially
whether or not this client is a complete re-implementation
Yes. It's a complete re-implementation of proprietary Skype Network protocol.
whether or not it includes disassembled code from the other Skype clients
Well, maybe a little :) unpack-4142.c and pack-4142.c are HexRays decompiled code and should be rewritten but I don't have time for this now.
whether or not it is a clean-room reverse-engineered code, like Wine/ReactOS
No. Not clean room, not Chinese wall.
why the specified license is valid and legal to use for the project
It's my own code, I write it, I am the author of most code and I hold all copyright rights.
Well, except some login pieces (skyauth3/skype_login.c) which are copyrighted by Sean O'Neil from VEST Corporation in 2009 and RC4 reversing and implementation (skype_rc4.c/skype_rc4.h) also by Sean O'Neil.
what are the legal complications, if any, to developing the project and to using it personally or commercially
- The
pack-4142.c/unpack41-42.cmentioned above. - Also, it contains MIRACL for RSA and big numbers multiply arithmetics.
MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC). http://miracl.com https://github.com/miracl/MIRACL
For commercial usage and license send me an e-mail to [email protected]
Protocol brief overview: http://skype-open-source2.blogspot.ru/2016/06/skype-protocol-dumps.html
Release post: http://skype-open-source2.blogspot.ru/2016/09/first-in-world-skype-network-compatible.html
Binaries: http://epycs.ru/files/EpycsMessenger2_20160901.zip http://yadi.sk/d/xvKhmImdugThn
Sources (same as on GitHub here): http://epycs.ru/files/EpycsMessenger2_20160901_src.zip http://yadi.sk/d/V_IWJT-fugvND