Uploaded July 2025 | Updated September 2026, 5 hours ago
Today we will explore an old #hack from the #80s that we found in the in the underground hacking magazine Hack-Tic (https://hacktic.nl)
And we do a little introduction on this magazine that was our life line in the late 80s and early 90s.
You will learn hoe to do Frequency Shift Keying (FSK) on a #C64 as the #commodore and the #ATARI were my hacking tools of choice, next to my cheap soldering iron and scanner.
Code and translated article (frequency table is omited as these no longer exist)
github.com/rdoetjes/tuts/tree/main/hacking_80s_90s/atf1_carphone
All the archived hacktics:
github.com/rdoetjes/tuts/tree/main/hacking_80s_90s/hacktics
Chapters:
00:00 Introduction
00:45 The Hacktic magazine
02:05 Hacktick archive
02:49 How you can translate it to english yourself
03:12 Prophetic article how the EU (and institutions) will hunt down, unique knowledge
04:44 Did we "allegedly" abuse the information?
04:55 How we "allegedly" abused ATF1 to dial naughty phone sex stories for free
05:30 Explain ATF1 spoofing
06:00 Reading the translated article on ATF1 hacking
14:44 Going through the C64 assembly FSK code
22:36 Running the code and how we connected it up
24:55 How we went "portable" with the POJO
25:32 SImple Ne555 FSK implementation
26:07 "Phone ding dong ditch" in college
28:06 Cost for the victimized Yuppie
28:49 Outro
Today we will explore an old #hack from the #80s that we found in the in the underground hacking magazine Hack-Tic (https://hacktic.nl)
And we do a little introduction on this magazine that was our life line in the late 80s and early 90s.
You will learn hoe to do Frequency Shift Keying (FSK) on a #C64 as the #commodore and the #ATARI were my hacking tools of choice, next to my cheap soldering iron and scanner.
Code and translated article (frequency table is omited as these no longer exist)
github.com/rdoetjes/tuts/tree/main/hacking_80s_90s/atf1_carphone
All the archived hacktics:
github.com/rdoetjes/tuts/tree/main/hacking_80s_90s/hacktics
Chapters:
00:00 Introduction
00:45 The Hacktic magazine
02:05 Hacktick archive
02:49 How you can translate it to english yourself
03:12 Prophetic article how the EU (and institutions) will hunt down, unique knowledge
04:44 Did we "allegedly" abuse the information?
04:55 How we "allegedly" abused ATF1 to dial naughty phone sex stories for free
05:30 Explain ATF1 spoofing
06:00 Reading the translated article on ATF1 hacking
14:44 Going through the C64 assembly FSK code
22:36 Running the code and how we connected it up
24:55 How we went "portable" with the POJO
25:32 SImple Ne555 FSK implementation
26:07 "Phone ding dong ditch" in college
28:06 Cost for the victimized Yuppie
28:49 Outro
