Sierra Unprotection Program: Difference between revisions

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<br />
<br />
==<br /> A.K.A. ==
* SUP
==<br /> Description ==
==<br /> Description ==


Line 31: Line 35:
Anders M Olsson's SUP (Sierra Unprotection Program) removes the [[CPC Disk Protection|CPC copy protection]] from most AGI games, as well as ''[[Thexder]]'' and ''[[3-D Helicopter Simulator]]'' so they can be played on modern PCs. It patches the SIERRA.COM in [[AGI|AGI games]] so that the [[keydisk]] prompt no longer appears, [[CPC.COM]] is no longer loaded and the buffer which would be filled by CPC.COM with the decryption key at run-time will be already filled at program start. Or in short: It just "cracks" SIERRA.COM. It has an "express" option that allows you to unprotect all Sierra AGI games installed on your hard drive in a matter of seconds.
Anders M Olsson's SUP (Sierra Unprotection Program) removes the [[CPC Disk Protection|CPC copy protection]] from most AGI games, as well as ''[[Thexder]]'' and ''[[3-D Helicopter Simulator]]'' so they can be played on modern PCs. It patches the SIERRA.COM in [[AGI|AGI games]] so that the [[keydisk]] prompt no longer appears, [[CPC.COM]] is no longer loaded and the buffer which would be filled by CPC.COM with the decryption key at run-time will be already filled at program start. Or in short: It just "cracks" SIERRA.COM. It has an "express" option that allows you to unprotect all Sierra AGI games installed on your hard drive in a matter of seconds.


<blockquote>* See [[AGI DiskFree Decryptor]] for decrypting AGI games on modern Windows.</blockquote>
Note:
 
Never try to unprotect your original game disk. Sierra games on 5 1/4"
diskettes are normally write protected, but 3 1/2 inch diskettes may
not be. Make sure that the original is write protected before proceeding.
While running this unprotection program, you will be asked to insert your
original game disk. This is only required for reading the copy protected track.
Nothing will be written to the original diskette, provided you follow
the instructions below. When games use more than one diskette, only the first
one is copy protected. The other(s) can be copied by DOS, whithout any
processing.
 
Version 2.00 of this software has been enhanced to be even simpler than
before. An "express" unprotect option has been added, enabling you to
unprotect all Sierra software installed on your hard disk in a matter of
seconds. Normally, everything is menu-controlled, but a more flexible
command-line option for DOS-experts is also provided.
 
<blockquote>See [[AGI DiskFree Decryptor]] for decrypting AGI games on modern Windows.</blockquote>
</blockquote>
 
==<br /> Features ==
 
<blockquote>
<!-- Add feature list here -->
</blockquote>
 
==<br /> Requirements ==
 
<blockquote>
<!-- Add requirements here -->
</blockquote>
 
==<br /> Version History ==
 
<blockquote>
<!-- Place version history here -->
</blockquote>
 
==<br /> Development Status ==
 
<blockquote>
Further development of Sierra Unprotection Program has been abandoned.
</blockquote>
</blockquote>


Line 38: Line 84:
<blockquote>
<blockquote>
Copy this .exe into the folder of your protected game. Running the decryptor .exe alone will search for "sierra.com" (to find the key offset), and will create a decrypted AGI file called AGI.EXE (the file you will use to run your game). If your loader is named something other than "sierra.com", you just run the decryptor with that loader filename as the argument.
Copy this .exe into the folder of your protected game. Running the decryptor .exe alone will search for "sierra.com" (to find the key offset), and will create a decrypted AGI file called AGI.EXE (the file you will use to run your game). If your loader is named something other than "sierra.com", you just run the decryptor with that loader filename as the argument.
See included README for more information
</blockquote>
==<br /> Options ==
<blockquote>
<!-- Add options here -->
</blockquote>
</blockquote>


<div id="DL">
==<br /> Download ==
==<br /> Download ==


* [[File:ZIP.png]] [[agi:Files/CopyProtection/Sierra_UnProtector_(SUP_201)x.ZIP|SUP Unprotection Program 2.01]] &nbsp; <span class="DLInfo"> (ZIP file) [16.1 KB]</span><br />
<blockquote>
<!-- * [[File:ZIP.PNG|ZIP File]] [[File:Agi_diskfree_decryptor-1.1.zip | AGI "Disk Free" Decryptor 1.1]] -->
Download from here:
&nbsp;
* [[Image:ZIP.png|ZIP File]] [[File:Sierra_UnProtector_(SUP_201)x.ZIP|Sierra_UnProtector_(SUP_201)x.ZIP]] <span class="DLInfo"> (ZIP file) [16.1 KB]</span> (includes source)
</blockquote>
 
==<br /> Known Issues ==
 
*
 
==<br /> Credits ==
 
[[Anders M Olsson]]
 
==<br /> Legal ==
 
If you found this program useful, your contribution of U.S. $ 10:- or
Swedish Kronor 50:- would be appreciated. Assist me in my struggle
against copy protection!
 
Anders M Olsson
Jaktstigen 37
S-222 52 Lund
SWEDEN
 
When sending money from outsIDE of Sweden, please send cashiers checks, NOT personal checks. Thankyou for using the "SUP" Unprotection Program. Sierra Unprotection Program was released with no license.


==<br /> References ==
==<br /> References ==


<references />
<references /><!-- Do not edit this section. It is autopopulated by <ref></ref> tags -->


==<br /> Also See ==
==<br /> Also See ==
Line 55: Line 132:
* [[AGI Decryptor]]
* [[AGI Decryptor]]
* [[AGI DiskFree Decryptor]]
* [[AGI DiskFree Decryptor]]
* [[:Category:AGI Tools|AGI Tools]]
* [[:Category:AGI Interpreter Articles|AGI Interpreter Articles]]
* [[:Category:Cracking Pages|Cracking Pages]]
* [[Sound Resource (SCI)]]
* [[SCI Specifications: Chapter 1 - Introduction#SND|Sound Resources in the SCI Specifications]]
* [[:Category:Sound Resources|Sound Resource Articles]]
* [[Patch Resource (SCI)]]
* [[SCI Specifications: Chapter 1 - Introduction#PAT|Patch Resource in the SCI Specifications]]
* [[:Category:Patch Resources|Patch Resource Articles]]
* [[:Category:AGI CP Tools|AGI CP Tools]]
* [[:Category:AGI Cracking Tools|AGI Cracking Tools]]
* [https://www.abc.se/~m1019/ www.abc.se/~m1019/]
&nbsp;
&nbsp;
[[Category:References]]
[[Category:AGI References]]
[[Category:General Tools]]
[[Category:Technical Info]]
[[Category:AGI Technical Info]]
[[Category:Interpreter Articles]]
[[Category:AGI Interpreter Articles]]
[[Category:Cracking Pages]]
[[Category:Sound Resources]]
[[Category:AGI Sound Resources]]
[[Category:Patch Resources]]
[[Category:AGI Patch Resources]]
[[Category:Game Utilities]]
[[Category:Game Utilities]]
[[Category:Technical Info]]
[[Category:Technical Info]]
<!-- [[Category:Misc Utilities]] -->

Revision as of 20:34, 28 September 2025

Sierra Unprotection Program
Version 2.01
Author: Anders M Olsson
1990-03-30
  This article is a tool stub page. You can
help the Sierra Wiki by expanding it.
Sierra Unprotection Program
Latest Version:  2.01
Release Date:  1990-03-30[1]
Company: N/A
Development Status:  {{{DevStatus}}}
Publication Status:  Published
Developer(s): Anders M. Olsson
Interface: CLI
Language: Pascal
Open Source: Open
Source Availability:  Yes (included in Download)
License: None
Type: CPC Tool, Copy Protection Tool, Copy Protection Tool, Copy Protection Tool, Cracking Tool, Cracking Tool, Cracking Tool,

Change to MiscUtil

Relevant Engine: AGI
Platform: DOS
Localization: English
Website: www.abc.se/~m1019/




A.K.A.

  • SUP


Description

Anders M Olsson's SUP (Sierra Unprotection Program) removes the CPC copy protection from most AGI games, as well as Thexder and 3-D Helicopter Simulator so they can be played on modern PCs. It patches the SIERRA.COM in AGI games so that the keydisk prompt no longer appears, CPC.COM is no longer loaded and the buffer which would be filled by CPC.COM with the decryption key at run-time will be already filled at program start. Or in short: It just "cracks" SIERRA.COM. It has an "express" option that allows you to unprotect all Sierra AGI games installed on your hard drive in a matter of seconds.

Note:

Never try to unprotect your original game disk. Sierra games on 5 1/4" diskettes are normally write protected, but 3 1/2 inch diskettes may not be. Make sure that the original is write protected before proceeding. While running this unprotection program, you will be asked to insert your original game disk. This is only required for reading the copy protected track. Nothing will be written to the original diskette, provided you follow the instructions below. When games use more than one diskette, only the first one is copy protected. The other(s) can be copied by DOS, whithout any processing.

Version 2.00 of this software has been enhanced to be even simpler than before. An "express" unprotect option has been added, enabling you to unprotect all Sierra software installed on your hard disk in a matter of seconds. Normally, everything is menu-controlled, but a more flexible command-line option for DOS-experts is also provided.

See AGI DiskFree Decryptor for decrypting AGI games on modern Windows.


Features


Requirements


Version History


Development Status

Further development of Sierra Unprotection Program has been abandoned.


Usage

Copy this .exe into the folder of your protected game. Running the decryptor .exe alone will search for "sierra.com" (to find the key offset), and will create a decrypted AGI file called AGI.EXE (the file you will use to run your game). If your loader is named something other than "sierra.com", you just run the decryptor with that loader filename as the argument.

See included README for more information


Options


Download

Download from here:


Known Issues


Credits

Anders M Olsson


Legal

If you found this program useful, your contribution of U.S. $ 10:- or Swedish Kronor 50:- would be appreciated. Assist me in my struggle against copy protection! 

Anders M Olsson

Jaktstigen 37 S-222 52 Lund SWEDEN

When sending money from outsIDE of Sweden, please send cashiers checks, NOT personal checks. Thankyou for using the "SUP" Unprotection Program. Sierra Unprotection Program was released with no license.


References

  1. ↑ From the included README file


Also See

 

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