This website uses the following licenses for content and code respectively.
-This work is marked with CC0 1.0 Universal
+
GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
@@ -1044,6 +1050,202 @@ pre { /* DRY who? */
}
+/blah/2024-06-19.html
+
+: decrypting a /g/ riddle
+
+4chan /g/ No.101048862:
+
+.section .data
+key: .byte 0x2A
+msg_len: .word 140
+encrypted_msg:
+ .byte 0x07, 0x44, 0x1E, 0x6B, 0x73, 0x17, 0x64, 0x12, 0x27, 0x24, 0x22, 0x6
+B, 0x74, 0x12, 0x21, 0x64
+ .byte 0x00, 0x0B, 0x28, 0x64, 0x76, 0x00, 0x64, 0x17, 0x22, 0x0F, 0x76, 0x0
+0, 0x7C, 0x17, 0x2D, 0x2B
+ .byte 0x6F, 0x12, 0x64, 0x64, 0x00, 0x2A, 0x6F, 0x17, 0x22, 0x6B, 0x64, 0x1
+2, 0x2C, 0x23, 0x7D, 0x73
+ .byte 0x64, 0x12, 0x22, 0x6B, 0x22, 0x6B, 0x0D, 0x22, 0x73, 0x12, 0x64, 0x6
+B, 0x64, 0x17, 0x7D, 0x6F
+ .byte 0x22, 0x64, 0x00, 0x0A, 0x64, 0x2B, 0x0A, 0x0B, 0x64, 0x2A, 0x2F, 0x6
+A, 0x64, 0x12, 0x2D, 0x17
+ .byte 0x6F, 0x12, 0x64, 0x64, 0x00, 0x2A, 0x6F, 0x17, 0x22, 0x6B, 0x64, 0x1
+2, 0x2C, 0x23, 0x7D, 0x73
+ .byte 0x64, 0x12, 0x22, 0x6B, 0x22, 0x6B, 0x0D, 0x22, 0x73, 0x12, 0x64, 0x6
+B, 0x64, 0x17, 0x7D, 0x6F
+ .byte 0x22, 0x64, 0x00, 0x0A, 0x64, 0x2B, 0x0A, 0x0B, 0x64, 0x2A, 0x2F, 0x6
+A, 0x64, 0x12, 0x2D, 0x17
+ .byte 0x6F, 0x12, 0x64, 0x64, 0x00, 0x2A, 0x6F, 0x17, 0x22, 0x6B, 0x64, 0x1
+2, 0x2C, 0x23, 0x7D, 0x73
+ .byte 0x64, 0x12, 0x22, 0x6B, 0x22, 0x6B, 0x0D, 0x22, 0x73, 0x12, 0x64, 0x6
+B, 0x64, 0x17, 0x7D, 0x6F
+ .byte 0x22, 0x64, 0x00, 0x0A, 0x64, 0x2B, 0x0A, 0x0B, 0x64, 0x2A, 0x2F, 0x6
+A, 0x64, 0x12, 0x2D, 0x17
+ .byte 0x6F, 0x12, 0x64, 0x64, 0x00, 0x2A, 0x6F, 0x17, 0x22, 0x6B, 0x64, 0x1
+2, 0x2C, 0x23, 0x7D, 0x73
+ .byte 0x64, 0x12, 0x22, 0x6B, 0x22, 0x6B, 0x0D, 0x22, 0x73, 0x12, 0x64, 0x6
+B, 0x64, 0x17, 0x7D, 0x6F
+ .byte 0x22, 0x64, 0x00, 0x0A, 0x64, 0x2B, 0x0A, 0x0B, 0x64, 0x2A, 0x2F, 0x6
+A, 0x64, 0x12, 0x2D, 0x17
+You should be able to decrypt this.
+
+Alright, well, all of these values are 7-bit (none of the first nybbles of the
+given bytes exceed 0b0111). Do you see a pattern? It's easier because of my
+blah formatting. Every cut-off line starts back in on 0x2 (0b0010), 0xA
+(0b1010), or 0xB (0b1011). Every third byte of a line alternates between 0x64
+(0b 0110 0100), 0x22 (0b 0010 0010), and 0x00 (all zeroes). So this sequence is
+patterned in some way. Because the key is a single byte I assume this is some
+sort of Caesar cypher esque secret [op] key = clear so let's start with that.
+
+The key is 0x2A. Because it's summer and 4chan this is probably simple so let's
+start with low hanging fruit.
+
+$ ascii 2a
+ASCII 2/10 is decimal 042, hex 2a, octal 052, bits 00101010: prints as `*'
+Official name: Asterisk
+Other names: Star, Splat, Aster, Times, Gear, Dingle, Bug, Twinkle, Glob
+
+0x64 XOR 0x2A = 'N'
+0x22 XOR 0x2A = ASCII_LS1
+
+I assume control characters besides usual whitespace won't be a part of the
+input so it's not an XOR thing. Nor addition as bytes exceed 0x70 (and
+therefore addition would put the values past valid ASCII). Nor subtraction as
+0x00 occurs and that would underflow to either negative values (signed) or
+values past 0x80 (unsigned), again, invalid ASCII.
+
+I wanna see this better. I'm tossing the key line so remember it's 0x2A.
+
+$ tail -n +5 | sed s:^.'*'byte.:: | tr -d ,
+0x07 0x44 0x1E 0x6B 0x73 0x17 0x64 0x12 0x27 0x24 0x22 0x6B 0x74 0x12 0x21 0x64
+0x00 0x0B 0x28 0x64 0x76 0x00 0x64 0x17 0x22 0x0F 0x76 0x00 0x7C 0x17 0x2D 0x2B
+0x6F 0x12 0x64 0x64 0x00 0x2A 0x6F 0x17 0x22 0x6B 0x64 0x12 0x2C 0x23 0x7D 0x73
+0x64 0x12 0x22 0x6B 0x22 0x6B 0x0D 0x22 0x73 0x12 0x64 0x6B 0x64 0x17 0x7D 0x6F
+0x22 0x64 0x00 0x0A 0x64 0x2B 0x0A 0x0B 0x64 0x2A 0x2F 0x6A 0x64 0x12 0x2D 0x17
+0x6F 0x12 0x64 0x64 0x00 0x2A 0x6F 0x17 0x22 0x6B 0x64 0x12 0x2C 0x23 0x7D 0x73
+0x64 0x12 0x22 0x6B 0x22 0x6B 0x0D 0x22 0x73 0x12 0x64 0x6B 0x64 0x17 0x7D 0x6F
+0x22 0x64 0x00 0x0A 0x64 0x2B 0x0A 0x0B 0x64 0x2A 0x2F 0x6A 0x64 0x12 0x2D 0x17
+0x6F 0x12 0x64 0x64 0x00 0x2A 0x6F 0x17 0x22 0x6B 0x64 0x12 0x2C 0x23 0x7D 0x73
+0x64 0x12 0x22 0x6B 0x22 0x6B 0x0D 0x22 0x73 0x12 0x64 0x6B 0x64 0x17 0x7D 0x6F
+0x22 0x64 0x00 0x0A 0x64 0x2B 0x0A 0x0B 0x64 0x2A 0x2F 0x6A 0x64 0x12 0x2D 0x17
+0x6F 0x12 0x64 0x64 0x00 0x2A 0x6F 0x17 0x22 0x6B 0x64 0x12 0x2C 0x23 0x7D 0x73
+0x64 0x12 0x22 0x6B 0x22 0x6B 0x0D 0x22 0x73 0x12 0x64 0x6B 0x64 0x17 0x7D 0x6F
+0x22 0x64 0x00 0x0A 0x64 0x2B 0x0A 0x0B 0x64 0x2A 0x2F 0x6A 0x64 0x12 0x2D 0x17
+
+Oh, this is extremely patterned. I wonder what this looks like in hexdump(1)?
+$ tail -n +5 | sed s:^.'*'byte.:: | tr -d ' ', | sed s:0x:'\\'x:g \
+ | xargs -0 printf | hexdump -C
+00000000 07 44 1e 6b 73 17 64 12 27 24 22 6b 74 12 21 64 |.D.ks.d.'$"kt.!d|
+00000010 0a 00 0b 28 64 76 00 64 17 22 0f 76 00 7c 17 2d |...(dv.d.".v.|.-|
+00000020 2b 0a 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 |+.o.dd.*o."kd.,#|
+00000030 7d 73 0a 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 |}s.d."k"k."s.dkd|
+00000040 17 7d 6f 0a 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a |.}o."d..d+..d*/j|
+00000050 64 12 2d 17 0a 6f 12 64 64 00 2a 6f 17 22 6b 64 |d.-..o.dd.*o."kd|
+00000060 12 2c 23 7d 73 0a 64 12 22 6b 22 6b 0d 22 73 12 |.,#}s.d."k"k."s.|
+00000070 64 6b 64 17 7d 6f 0a 22 64 00 0a 64 2b 0a 0b 64 |dkd.}o."d..d+..d|
+00000080 2a 2f 6a 64 12 2d 17 0a 6f 12 64 64 00 2a 6f 17 |*/jd.-..o.dd.*o.|
+00000090 22 6b 64 12 2c 23 7d 73 0a 64 12 22 6b 22 6b 0d |"kd.,#}s.d."k"k.|
+000000a0 22 73 12 64 6b 64 17 7d 6f 0a 22 64 00 0a 64 2b |"s.dkd.}o."d..d+|
+000000b0 0a 0b 64 2a 2f 6a 64 12 2d 17 0a 6f 12 64 64 00 |..d*/jd.-..o.dd.|
+000000c0 2a 6f 17 22 6b 64 12 2c 23 7d 73 0a 64 12 22 6b |*o."kd.,#}s.d."k|
+000000d0 22 6b 0d 22 73 12 64 6b 64 17 7d 6f 0a 22 64 00 |"k."s.dkd.}o."d.|
+000000e0 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 0a |.d+..d*/jd.-..|
+
+The 0x0As here are from the input formatting itself. Let's ditch 'em.
+$ tail -n +5 | sed s:^.'*'byte.:: | tr -d ' \n', | sed s:0x:'\\'x:g \
+ | xargs -0 printf | hexdump -C
+00000000 07 44 1e 6b 73 17 64 12 27 24 22 6b 74 12 21 64 |.D.ks.d.'$"kt.!d|
+00000010 00 0b 28 64 76 00 64 17 22 0f 76 00 7c 17 2d 2b |..(dv.d.".v.|.-+|
+00000020 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000030 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+00000040 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+00000050 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000060 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+00000070 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+00000080 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000090 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+000000a0 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+000000b0 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+000000c0 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+000000d0 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+000000e0
+
+As cool as it is to actually /see/ the data this hasn't gotten us anywhere
+closer to solving the riddle. By the way, this is my first time doing something
+like this and I have entirely no clue what I'm doing. I think I'm barking up
+the right tree because, ignoring addresses <0x20, every column has at most
+three unique values.
+
+I asked a roommate and it said it didn't know and asked why I was wasting my
+time on /g/ riddles.
+
+The message length is 140d bytes but the encrypted length is 0xE0 (224d) bytes.
+The first two rows don't fit the pattern so perhaps they're a 32d byte header.
+That would be 192d bytes for a 140d byte message?
+
+Does this repeat?
+
+00000000 07 44 1e 6b 73 17 64 12 27 24 22 6b 74 12 21 64 |.D.ks.d.'$"kt.!d|
+00000010 00 0b 28 64 76 00 64 17 22 0f 76 00 7c 17 2d 2b |..(dv.d.".v.|.-+|
+
+00000020 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000030 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+00000040 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+
+00000050 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000060 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+00000070 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+
+00000080 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+00000090 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+000000a0 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+
+000000b0 6f 12 64 64 00 2a 6f 17 22 6b 64 12 2c 23 7d 73 |o.dd.*o."kd.,#}s|
+000000c0 64 12 22 6b 22 6b 0d 22 73 12 64 6b 64 17 7d 6f |d."k"k."s.dkd.}o|
+000000d0 22 64 00 0a 64 2b 0a 0b 64 2a 2f 6a 64 12 2d 17 |"d..d+..d*/jd.-.|
+
+000000e0
+
+Hm. I'm a little stumped. I went back to the thread and checked for clues. One
+anon XORed and gave up and the others are discussing whether trans people
+deserve to live. I hate summer vacation. All the small children have come off
+/pol/ and are thirsty for blood.
+
+0x2A is 0b 0010 1010. Maybe the alternating 01s is a clue. Actually, I don't
+care anymore.
+
+: 2 years of blahbbing
+
+Today is Juneteenth and also the second anniversary of my blah. In the last two
+years I went from being an 18 year old depressed burger serf who spent all her
+time writing and programming deranged shit to being a 20 year old depressed
+burger serf who spends all its time sleeping and working, but also on the other
+side of the country and with some more friends now. Still, I am tired, and you
+must forgive me if one day I give up on trying to get to the point where I
+don't have to work so much.
+
+I don't remember an awful lot of these last two years but I remember the
+people. Usagi, M--, another person, and on-line Emma Tebibyte and the rest of
+Tebibyte Media, Veronika, the administrators of murderu.us (and especially
+suika who does basically all of the work on the server). Helping others is why
+I keep going and I hope I've had some sort of positive impact. There are a lot
+of people I miss.
+
+My blah has been perused by hopefully less than two dozen people which makes it
+special to me as a novel-length mostly nonsensical and often incoherent >700K
+obscure Internet oddity that I have created. It hasn't been posted anywhere on
+social media (though, feel free to share it on Hacker News, but anywhere more
+popular is off limits) and even my close friends haven't read all of it. This
+is indexed on DuckDuckGo which I should figure out how to prevent but not on
+Google so hopefully I've not been violated in passing by corporate scraper
+scum.
+
+I don't have much more to say. I'm gonna start celebrating the blah anniversary
+("celebrating") on 06-20 to avoid the collision with Juneteenth. Also happy
+anniversary to the creation of X Windows. okbye
+
+
/blah/2024-06-14.html
: changing the blah header