vint56, если {app}=c:\Games\Call of Duty: Black Ops и файлы Call of Duty- Black Ops_disk1.sim, SimPack.exe расположены рядом с инсталлятором, то:
Код:

#define SRCFILE '{src}\Call of Duty- Black Ops_disk1.sim'
[Setup]
AppName=My Program
AppVerName=My Program v 1.5
DefaultDirName={pf}\My Program
OutputDir=.
Compression=lzma/ultra
InternalCompressLevel=ultra
SolidCompression=yes
[Run]
Filename: "{src}\SimPack.exe"; Parameters: "x ""{#SRCFILE}"" ""{app}"" -g42700 -kD9AD91A8DB3258C4C8210D505DCB0F70 -n1"; WorkingDir: {src}; StatusMsg: Распаковка файлов...; Flags: waituntilterminated HideWizard;
Filename: "{src}\SimPack.exe"; Parameters: "x ""{#SRCFILE}"" ""{app}"" -g42701 -kBAD1EC97BB5FB39A08D70AEDAB239DDC -n1"; WorkingDir: {src}; StatusMsg: Распаковка файлов...; Flags: waituntilterminated HideWizard;
Filename: "{src}\SimPack.exe"; Parameters: "x ""{#SRCFILE}"" ""{app}"" -g42702 -kAC17FBAE013EB5D5A549EBF9907C78A5 -n1"; WorkingDir: {src}; StatusMsg: Распаковка файлов...; Flags: waituntilterminated HideWizard;
Filename: "{src}\SimPack.exe"; Parameters: "x ""{#SRCFILE}"" ""{app}"" -g42709 -kD9AD91A8DB3258C4C8210D505DCB0F70 -n1"; WorkingDir: {src}; StatusMsg: Распаковка файлов...; Flags: waituntilterminated HideWizard;
[Languages]
Name: rus; MessagesFile: compiler:Languages\Russian.isl