62 lines
2.6 KiB
Plaintext
62 lines
2.6 KiB
Plaintext
File: HACKING THE IBM - PART 1
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Hacking the I.B.M.
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By John Doe
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Part I
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Preface:
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Yes, that's right. This series of articles will deal with how to hack the
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I.B.M. We're not talking about systems that use the I.B.M., because those would
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be controled by software, not hardware. What we are dealing with is those
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computers that have one or more of the ports on the fone lines.
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This article will deal mainly with learning the language of the I.B.M.
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Unlike what we use in our daily routines calling the BBS's, sometimes the IBMs
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don't use ASCII. They use what is called EBCDIC. That stands for Extended
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Binary Coded Decimal Interchange Code. It's the internal language of most IBM's.
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Some of them have there fone ports running on ASCII, but others have it running
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on EBCDIC. When looking at EBCDIC while interpreting ASCII, you will get some
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strange results. It may look like you have your configuration wrong and are
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running an even parity instead of an odd parity. While this may be that case,
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it may not and trying this may avoid some frustration.
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EBCDIC is not at organized a characted set as ASCII (in my humble opinion).
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EBCDID has (sequentially) 9 letters then 7 symbols, then the next 9 letter,
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then 7 more symbols. Once you have this character set, a conversion routine is
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no problem to write/term software is no problem to modify. I am only going to list letter, numbers, and certain symbols (256 possibilities is too much to
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type in)
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Lowecase letters a-i are decimal codes 129-137.
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Decimal Code CHR Decimal Code CHR
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139 Open Bracket 140 Less than or equal to symbol.
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141 ( 142 +
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143 cross
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Codes 145-153 are codes for lower case j-r
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Decimal Code CHR Decimal Code CHR
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155 Close Bracket 157 )
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158 plus minus 160 -
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161 degrees symbol 174 > OR =
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Codes 162-169 are lower case s-z.
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Note that in BCDIC, code 161 is a tilda.
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Code 175 is a bot dot (like put before each feature in a list).
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Codes 176-185 and 240-249 are 0-9.Add 64 to lower case to get upper case.
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There are many more codes, however, these are the major ones and the ones
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you'll be needing most often. If you need any others that I didn't list, leave
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me E-Mail on RACS III or any other board we're I frequently log on.
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In part II, we'll be discussing formats of term types, passwords, logon
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sequences, and possible some valuable commands.
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If you have any questions, leave me E-Mail and I'll try to help you. Leave all
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question, corrections, or comments to John Doe. I'd like to thank I.B.M. for
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helping me prepare this article.
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