GCLISP.UNP Breaking GCLISP (Sofguard version 2.00) Special thanks to by The Lone Victor Programs that are protected by the Softguard system are distingished by the fileS CML0200.HCL and VDF0200.VDW which are hidden in the root directory when you install the program on your fixed disk. The 0200 part of the file names is the Softguard version (2.00) while CML stands for Common Loader and VDF is the Volume Descriptor File. The extentions HCL and VDW stand for Hard Common Loader and Verify Descriptor Working copy. In addition, there will be a hidden root file with a .EXE or .LOD extention. This is the REAL program, which has been encrypted and hidden. The program .COM, in the product directory is the Softguard mini- loader. All it does is call the Common Loader. For example, when you run dbase, the program GCLISP.COM loads CML0200.HCL high in memory and runs it. CML decrypts itself and reads VDF0200.VDW. The VDF file contains some code and data from the fixed disk FAT at the time of installation. By comparing the information in the VDF file with the current FAT, CML can tell if the CML, VDF, and GCLISP.EXE files are in the same place on the disk where they were installed. If they have moved, say from a backup & restore, then GCLISP will not run. This text file is designed to let you unprotect ANY of the programs using the Softguard 2.00 system. We will use GCLISP as an example, but values for other programs will be included in a table. The DBASE III compiler named CLIPPER uses Softguard 2.03 (i.e. has CML0203.HCL, etc.) Many of the code addresses are different in this version. This text will not, currently, unprotect any programs using Softguard 2.03. This table is an experiment designed to keep down the number of files uploaded to BBS's. When I started it, this text file was named SOFTG1.UNP. Whenever you add a product to the table (including your "name" if desired) increment the file name by one and upload it to your local BBS. Don't worry about the fact that others will be doing the same. Higher versions of SOFTGxxx.UNP will not INSURE that they contain all the tabulated products, but will be MORE LIKELY to contain them all. Eventually we'll get them all collected. If you find a new program to add to the table, just enter the name of the encrypted, hidden file in the root directory, and it's size converted to HEX. Try it out before you upload it to your BBS. If you have any comments on this unprotect routine or the PROLOCK.UNP routine, please leave them on the Atlanta PCUG BBS (404) 634-5731. The Lone Victor - 6/26/85 TABLE OF VALUES FOR VARIOUS PROTECTED PROGRAMS FILE FINAL PRODUCT VERSION NAME EXT SIZE: BX= CX= CONTRIBUTOR ------------------------------------------------------------------------ dBase III 1.10 DBASE EXE BX = 1 CX = AC00 The Lone Victor 4/15/85 Framework 1.10 FW EXE BX = 2 CX = F400 Q-1367 (I question this next file size - L.V.) WordStar 1.00 WS2000 EXE BX = 1 CX = AC00 Gerald Lee Double DOS ? DOUBLEDO EXE BX = ? CX = ? Big Al & Coffee Man Spot Light ? SL EXE BX = 0 CX = 6700 Golden Common Lisp GCLISP EXE BX = 2 CX = 3E00 MIT CRACKER The following instructions show you how to bypass the SoftGuard copy protection scheme using GCLISP as an example. To use it with other products, simply substitute the values in the table above for the values given below. The only things that change are the file name, and the size that goes in the BX:CX register pair. First, using your valid, original GCLISP diskette, install it on a fixed disk. You cannot use this text to unprotect the floppy directly! Softguard hides three files in your fixed disk root directory: CML0200.HCL, VDF0200.VDW, and GCLISP.EXE. It also copies GCLISP.COM into your chosen GCLISP directory. GCLISP.EXE is the real GCLISP program, encrypted. (This file might also be named GCLISP.LOD, but is the same thing.) Second, un-hide the three files in the root directory. You can do this with the programs ALTER.COM or FM.COM found on any BBS. Make copies of the three files, and of GCLISP.COM, into some other directory. Hide the three root files again using ALTER or FM. Following the GCLISP instructions, UNINSTALL GCLISP . You can now put away your original GCLISP diskette. We are done with it. Next we will make some patches to CML0200.HCL to allow us to trace through the code in DEBUG. These patches will keep it from killing our interrupt vectors. debug cml0200.hcl e 3F9 2A.4A ; change the 2A to 4A e 49D F6.16 ; if any of these numbers don't show up e 506 E9.09 ; it's not working. e A79 00.20 ; e AE9 00.20 ; e 73C 97 FA FA F4 F1 7E ; this is an encrypted call to 0:300 w ; write out the new CML file q ; quit debug Now copy your four saved files back into the root directory and hide the CML0200.HCL, VDF0200.VDW, and GCLISP.EXE files using ALTER or FM. We can now run GCLISP.COM using DEBUG, trace just up to the point where it has decrypted GCLISP.EXE, then write that file out. **** USE THE FILE NAME LISTED IN THE TABLE ABOVE **** **** E.G. USE FW.COM INSTEAD OF GCLISP.COM FOR FRAMEWORK **** debug GCLISP.com ; name of file that runs the product r ; dump debug's registers **** WRITE DOWN THE VALUE OF DS FOR USE BELOW. **** **** THIS VALUE IS DEPENDENT ON YOUR PARTICULAR MACHINE. **** a 0:300 ; we must assemble some code here pop ax cs: mov [320],ax ; save return address pop ax cs: mov [322],ax push es ; set up stack the way we need it mov ax,20 mov es,ax mov ax,0 cs: jmp far ptr [320] ; jump to our return address g 406 ; now we can trace CML t g 177 ; this stuff just traces past some g 1E9 ; encryption routines. t g 54E ; wait while reading VDF & FAT g=559 569 g=571 857 ; GCLISP.EXE has been decrypted **** USE THE FILE SIZE LISTED IN THE TABLE ABOVE **** **** THE VALUES HERE ARE FOR GCLISP ONLY **** rBX :2 ; set BX to 1 for GCLISP rCX :3E00 ; set CX to AC00 for GCLISP **** USE THE FILE NAME LISTED IN THE TABLE ABOVE **** nGCLISP.bin ; name of file to write to w XXXX:100 ; where XXXX is the value of DS that ; you wrote down at the begining. q ; quit debug Last, unhide and delete the three root files CML0200.HCL, VDF0200.VDW, and GCLISP.EXE. Delete GCLISP.COM and rename GCLISP.BIN to GCLISP.EXE. This is the real GCLISP program without any SoftGuard code or encryption. It requires only the INIT.LSP file to run. Every protected program I have seen has the .EXE extention, but it is possible to use Softguard to encrypt .COM files too. See the table above for the proper extention to put on the de- crypted file.