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1998-02-08
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189 lines
╒═╤═══════
│ └Big Tree Software: ComCrypt '98 v9.12, encryptor of COM files
│
Copyright (c) 1996-98 by Jozsef Hidasi, Hungary
║
9 February 1998 All Rights Reserved ║
─────────╜
╒══════════╡ About Window ╞══════════╕
│ │
│ WHAT DOES THIS PROGGY DO ANYWAY? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘════════════════════════════════════╧───────────────────────────────────
Well, this proggy just "tryes" to encrypt a VALID! COM file... The
encryption algorythm is a quite easy one, but it's just enought for
the protection... Anyway, the hackstop funtion is quite good, for
example>
TEU - Won't work!!! (It will do something?!)
DECAY - Won't work!!! (Just explains nothing happend...)
ICEUNP - It will find a small proggy, don't be affraid, I wanted
to!
BTW> I can tell, that, the most Intelligent Unpackers
will just create a small COM file, witch is not the
original one... :-)))))))
That small proggy does:
- Just write:
Crypted by ComCrypt'98 by Hidi! :-)
- Than exits...
CUP33A - I don't know what did it do?!?! :-)
GTR181 - Well, not too much anyway!
DEBUGERS- There's no way to debug this! :-)
Besides, ComCrypt adds a small hackstop proggy (almost the all is that
:-))))) ), the COM file will be CRC checked, so when a Cracker want's
to change a byte in the COM file, it won't start any more...
╒══════════╡ Useage ╞═══════════╕
│ │
│ WHAT SHOULD I DO WITH THIS? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘═══════════════════════════════╧────────────────────────────────────────
Crypt.EXE <InFile>.COM [<OutFile.>.COM]
You must specify an InFile which is a COM file, if you don't specify
OutFile will be the same as InFile! NOTE: NO BACKUP WILL BE CREATED!
THERE IS NO WAY TO RECOVER LOST BACKUPS (in this version)!
╒════════════╡ Bugs ╞════════════╕
│ │
│ WHAT? Are there any bugs?!?! ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘════════════════════════════════╧───────────────────────────────────────
That's a fact, as in other proggys in ComCrypt'98 there are many bugs
I've to admit this small fact! :-( So, let's see the list of bugs, what
I know about...
- ComCrypt won't work on COMMAND.COM! It start's but when you exit it
could hang, I don't know why, probably because of memory allication,
I'm working on it!
- It won't work on Resident proggys, but I don't care of it, because
of, there's no sence to encrypt a resident proggy... :-)
- There are some other proggy's whitch won't like ComCrypt...
- CRC will change!
- Don't use ComCrypt on a CRC Chacking Packed COM!
╒═══════╡ Main Features ╞═══════════╕
│ │
│ Let me see! What have you made? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘═══════════════════════════════════╧────────────────────────────────────
Well, these are the main features of ComCrypt:
>
- EnCrypting methold...
- CRC checking
- HackStop
- Won't allow to modify the COM file, whitch is encrypted...
- Identification is allowed See technical reference...
- etc...
╒════════╡ Technical Reference ╞═══════════╕
│ │
│ Let me see! Can I check it from a COM? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘══════════════════════════════════════════╧─────────────────────────────
If you wanna you can check, wether your COM file is Crypted correctly,
Here's a small example in ASM:
PROG SEGMENT use16
ASSUME CS:PROG,DS:PROG
ORG 100h
START:
MOV SI,OFFSET Sign
MOV CX,14
Chk:
MOV BX,CX
MOV AL,SS:[0ffcfh+BX]
MOV BL,AL
LODSB
CMP BL,AL
JNE SHORT Error
LOOP SHORT Chk
MOV DX,OFFSET st_Ok
JMP SHORT OK
ERROR:
MOV DX,OFFSET st_Err
OK:
MOV AH,9
INT 21H
MOV AH,4ch
INT 21H
Sign: db "Jozsef Hidasi!$"
st_ERR db "Hey, This COM file hasn't been crypted by ComCrypt'98!",13,10,'$'
st_Ok db "This COM file has been crypted by ComCrypt'98... All Right!",13,10,'$'
PROG ENDS
END START
╒═══════════╡ Licence ╞═════════════╕
│ │
│ How long can I use this proggy? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘═══════════════════════════════════╧────────────────────────────────────
Well, if you wanna to be a TESTER you've to drop me a letter than you
can use ComCrypt FREE ! If you like this program, and you won't be a
----
TESTER you will have to pay for the registration...
BTW> Tester has to do some thing!!! :-)))))
This pack can be distributed until the archive is complete and no chan-
ges have been made!
WARNING: I am not responsible for data loss!
╒════════════╡ Connect me! ╞═════════════╕
│ │
│ How can I connect you? E-Mail? FIDO? ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘════════════════════════════════════════╧───────────────────────────────
To find out more mail Hidasi.Jozsef@MTTBBS.hu
On FIDO you can reach me at:
2:371/17 Hidasi Jozsef
The latest version of ComCrypt'98 can also be found at:
ftp://ftp.stuba.sk/pub/pc/crypt
and all SAC FTP mirrors.
This program was BETA tested by Valentino Tosatti, Italy.
---------------------------------------------------------
╒══════════════╡ End Of Doc! ╞══════════════╕
│ │
│ All The best! The Author: Jozsef Hidasi ▄ │
│ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ │
│ │
╘═══════════════════════════════════════════╧────────────────────────────
End of the doc