đź•’ : 3 h maximum

    Un peu d’histoire

    À l’époque de Telnet 1969, on ne chiffrait pas parce que :

    • Le rĂ©seau Ă©tait petit et rĂ©servĂ© Ă  une communautĂ© de confiance.
    • Les ordinateurs Ă©taient trop faibles pour chiffrer sans perdre en performance.
    • La culture de la sĂ©curitĂ© rĂ©seau n’existait pas encore.
    • Il a fallu attendre l’explosion d’Internet et les premières attaques pour que le chiffrement devienne une nĂ©cessitĂ©.

    Telnet vs SSH : deux protocoles, deux Ă©poques

    CaractĂ©ristiqueTelnet (1969 / 1983)SSH (1995)
    ChiffrementAucun (tout en clair)Chiffrement intégral des échanges
    AuthentificationMot de passe transmis en clairClés publiques / privées, mots de passe chiffrés
    IntĂ©gritĂ© des donnĂ©esNon vĂ©rifiĂ©eContrĂ´le d’intĂ©gritĂ© (empĂŞche la modification en cours de route)
    Port par défaut2322
    Utilisation actuelleQuasiment abandonnĂ©, sauf sur des rĂ©seaux internes ou Ă©quipements anciensStandard universel pour l’administration système Ă  distance

    Présentation , But

    Nous allons montrer ici comment l’usage de telnet est dangereux ! on va retrouver en clair le mot de passe de l’utilisateur de telnet.

    Prérequis

    on va avoir besoin d’une machine debian11 (avec nat) pour accĂ©der Ă  internet et pouvoir ĂŞtre root , TP prĂ©cĂ©dents

    Savoir utiliser plusieurs compte sur la machine tty1 … tty7

    on va y installer telnetd qui un serveur telnet qui existe depuis 1969 !! 

    sudo apt update
sudo apt install telnetd -y  # installation du serveur telnet 
sudo apt install tshark      #  outil d'analyse de trame

    vérifier que telnetd est actif !

    sudo systemctl status telnetd

    on va créer un simple utilisateur ici homer

    MĂ©thode avec useradd , on a dĂ©ja vu adduser TP administration , l’avantage ici est que le mot de passe est injectĂ© assez rapidement 

    sudo useradd -m homer
    echo "homer:motdepasse" | sudo chpasswd

    on dispose de la machine pour piéger homer !

    tcpdump

    C’est un outil puissant et lĂ©ger qui permet de capturer et afficher les paquets qui circulent sur une interface rĂ©seau, directement depuis le terminal.

    man tcpdump

    Dans un terminal en tant que root

    nous allons capturer la trame quand homer va vouloir se connecter sur la machine depuis le compte Ă©tudiant avec le client telnet

    tcpdump -i lo port 23 -w capture_telnet.pcap -s 0

    Donner le rĂ´le de l’option -i

    Pourquoi port 23 ?

    Donner le rĂ´le de l’option -w

    ne pas le fermer ! on surveille le port 23 et l’interface lo , et on va capturer dans capture_telnet.pcap (pour espionner notre brave homer)

    Votre fichier capture_telnet.pcap doit ressembler Ă  cela !

    capture_telnet.pcap 
    hexdump -C capture_telnet.pcap
00000000  d4 c3 b2 a1 02 00 04 00  00 00 00 00 00 00 00 00  |................|
00000010  00 00 04 00 01 00 00 00  f5 f8 cb 69 e3 5e 08 00  |...........i.^..|
00000020  4a 00 00 00 4a 00 00 00  00 00 00 00 00 00 00 00  |J...J...........|
00000030  00 00 00 00 08 00 45 10  00 3c 06 9e 40 00 40 06  |......E..<..@.@.|
00000040  36 0c 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |6.......... ....|
00000050  54 e0 00 00 00 00 a0 02  ff d7 fe 30 00 00 02 04  |T..........0....|
00000060  ff d7 04 02 08 0a 6f 8e  cd 47 00 00 00 00 01 03  |......o..G......|
00000070  03 07 f5 f8 cb 69 ed 5e  08 00 4a 00 00 00 4a 00  |.....i.^..J...J.|
00000080  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00000090  45 00 00 3c 00 00 40 00  40 06 3c ba 7f 00 00 01  |E..<..@.@.<.....|
000000a0  7f 00 00 01 00 17 b1 20  70 40 af d1 c4 12 54 e1  |....... p@....T.|
000000b0  a0 12 ff cb fe 30 00 00  02 04 ff d7 04 02 08 0a  |.....0..........|
000000c0  6f 8e cd 47 6f 8e cd 47  01 03 03 07 f5 f8 cb 69  |o..Go..G.......i|
000000d0  f5 5e 08 00 42 00 00 00  42 00 00 00 00 00 00 00  |.^..B...B.......|
000000e0  00 00 00 00 00 00 00 00  08 00 45 10 00 34 06 9f  |..........E..4..|
000000f0  40 00 40 06 36 13 7f 00  00 01 7f 00 00 01 b1 20  |@.@.6.......... |
00000100  00 17 c4 12 54 e1 70 40  af d2 80 10 02 00 fe 28  |....T.p@.......(|
00000110  00 00 01 01 08 0a 6f 8e  cd 47 6f 8e cd 47 f5 f8  |......o..Go..G..|
00000120  cb 69 3f 62 08 00 5a 00  00 00 5a 00 00 00 00 00  |.i?b..Z...Z.....|
00000130  00 00 00 00 00 00 00 00  00 00 08 00 45 10 00 4c  |............E..L|
00000140  06 a0 40 00 40 06 35 fa  7f 00 00 01 7f 00 00 01  |..@.@.5.........|
00000150  b1 20 00 17 c4 12 54 e1  70 40 af d2 80 18 02 00  |. ....T.p@......|
00000160  fe 40 00 00 01 01 08 0a  6f 8e cd 48 6f 8e cd 47  |.@......o..Ho..G|
00000170  ff fd 03 ff fb 18 ff fb  1f ff fb 20 ff fb 21 ff  |........... ..!.|
00000180  fb 22 ff fb 27 ff fd 05  f5 f8 cb 69 45 62 08 00  |."..'......iEb..|
00000190  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
000001a0  00 00 00 00 08 00 45 00  00 34 4a 72 40 00 40 06  |......E..4Jr@.@.|
000001b0  f2 4f 7f 00 00 01 7f 00  00 01 00 17 b1 20 70 40  |.O........... p@|
000001c0  af d2 c4 12 54 f9 80 10  02 00 fe 28 00 00 01 01  |....T......(....|
000001d0  08 0a 6f 8e cd 48 6f 8e  cd 48 f5 f8 cb 69 28 74  |..o..Ho..H...i(t|
000001e0  08 00 4e 00 00 00 4e 00  00 00 00 00 00 00 00 00  |..N...N.........|
000001f0  00 00 00 00 00 00 08 00  45 10 00 40 4a 73 40 00  |........E..@Js@.|
00000200  40 06 f2 32 7f 00 00 01  7f 00 00 01 00 17 b1 20  |@..2........... |
00000210  70 40 af d2 c4 12 54 f9  80 18 02 00 fe 34 00 00  |p@....T......4..|
00000220  01 01 08 0a 6f 8e cd 4c  6f 8e cd 48 ff fd 18 ff  |....o..Lo..H....|
00000230  fd 20 ff fd 23 ff fd 27  f5 f8 cb 69 34 74 08 00  |. ..#..'...i4t..|
00000240  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
00000250  00 00 00 00 08 00 45 10  00 34 06 a1 40 00 40 06  |......E..4..@.@.|
00000260  36 11 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |6.......... ....|
00000270  54 f9 70 40 af de 80 10  02 00 fe 28 00 00 01 01  |T.p@.......(....|
00000280  08 0a 6f 8e cd 4c 6f 8e  cd 4c f5 f8 cb 69 5d 74  |..o..Lo..L...i]t|
00000290  08 00 45 00 00 00 45 00  00 00 00 00 00 00 00 00  |..E...E.........|
000002a0  00 00 00 00 00 00 08 00  45 10 00 37 06 a2 40 00  |........E..7..@.|
000002b0  40 06 36 0d 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.6.......... ..|
000002c0  c4 12 54 f9 70 40 af de  80 18 02 00 fe 2b 00 00  |..T.p@.......+..|
000002d0  01 01 08 0a 6f 8e cd 4c  6f 8e cd 4c ff fc 23 f5  |....o..Lo..L..#.|
000002e0  f8 cb 69 71 74 08 00 63  00 00 00 63 00 00 00 00  |..iqt..c...c....|
000002f0  00 00 00 00 00 00 00 00  00 00 00 08 00 45 10 00  |.............E..|
00000300  55 4a 74 40 00 40 06 f2  1c 7f 00 00 01 7f 00 00  |UJt@.@..........|
00000310  01 00 17 b1 20 70 40 af  de c4 12 54 fc 80 18 02  |.... p@....T....|
00000320  00 fe 49 00 00 01 01 08  0a 6f 8e cd 4c 6f 8e cd  |..I......o..Lo..|
00000330  4c ff fb 03 ff fd 1f ff  fd 21 ff fe 22 ff fb 05  |L........!.."...|
00000340  ff fa 20 01 ff f0 ff fa  27 01 ff f0 ff fa 18 01  |.. .....'.......|
00000350  ff f0 f5 f8 cb 69 a1 74  08 00 6d 00 00 00 6d 00  |.....i.t..m...m.|
00000360  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00000370  45 10 00 5f 06 a3 40 00  40 06 35 e4 7f 00 00 01  |E.._..@.@.5.....|
00000380  7f 00 00 01 b1 20 00 17  c4 12 54 fc 70 40 af ff  |..... ....T.p@..|
00000390  80 18 02 00 fe 53 00 00  01 01 08 0a 6f 8e cd 4c  |.....S......o..L|
000003a0  6f 8e cd 4c ff fa 1f 00  64 00 25 ff f0 ff fa 20  |o..L....d.%.... |
000003b0  00 33 38 34 30 30 2c 33  38 34 30 30 ff f0 ff fa  |.38400,38400....|
000003c0  27 00 ff f0 ff fa 18 00  6c 69 6e 75 78 ff f0 f5  |'.......linux...|
000003d0  f8 cb 69 46 75 08 00 45  00 00 00 45 00 00 00 00  |..iFu..E...E....|
000003e0  00 00 00 00 00 00 00 00  00 00 00 08 00 45 10 00  |.............E..|
000003f0  37 4a 75 40 00 40 06 f2  39 7f 00 00 01 7f 00 00  |7Ju@.@..9.......|
00000400  01 00 17 b1 20 70 40 af  ff c4 12 55 27 80 18 02  |.... p@....U'...|
00000410  00 fe 2b 00 00 01 01 08  0a 6f 8e cd 4c 6f 8e cd  |..+......o..Lo..|
00000420  4c ff fd 01 f5 f8 cb 69  56 75 08 00 45 00 00 00  |L......iVu..E...|
00000430  45 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |E...............|
00000440  08 00 45 10 00 37 06 a4  40 00 40 06 36 0b 7f 00  |..E..7..@.@.6...|
00000450  00 01 7f 00 00 01 b1 20  00 17 c4 12 55 27 70 40  |....... ....U'p@|
00000460  b0 02 80 18 02 00 fe 2b  00 00 01 01 08 0a 6f 8e  |.......+......o.|
00000470  cd 4d 6f 8e cd 4c ff fc  01 f5 f8 cb 69 c7 75 08  |.Mo..L......i.u.|
00000480  00 45 00 00 00 45 00 00  00 00 00 00 00 00 00 00  |.E...E..........|
00000490  00 00 00 00 00 08 00 45  10 00 37 4a 76 40 00 40  |.......E..7Jv@.@|
000004a0  06 f2 38 7f 00 00 01 7f  00 00 01 00 17 b1 20 70  |..8........... p|
000004b0  40 b0 02 c4 12 55 2a 80  18 02 00 fe 2b 00 00 01  |@....U*.....+...|
000004c0  01 08 0a 6f 8e cd 4d 6f  8e cd 4d ff fb 01 f5 f8  |...o..Mo..M.....|
000004d0  cb 69 e6 75 08 00 45 00  00 00 45 00 00 00 00 00  |.i.u..E...E.....|
000004e0  00 00 00 00 00 00 00 00  00 00 08 00 45 10 00 37  |............E..7|
000004f0  06 a5 40 00 40 06 36 0a  7f 00 00 01 7f 00 00 01  |..@.@.6.........|
00000500  b1 20 00 17 c4 12 55 2a  70 40 b0 05 80 18 02 00  |. ....U*p@......|
00000510  fe 2b 00 00 01 01 08 0a  6f 8e cd 4d 6f 8e cd 4d  |.+......o..Mo..M|
00000520  ff fd 01 f5 f8 cb 69 02  76 08 00 57 00 00 00 57  |......i.v..W...W|
00000530  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 08  |................|
00000540  00 45 10 00 49 4a 77 40  00 40 06 f2 25 7f 00 00  |.E..IJw@.@..%...|
00000550  01 7f 00 00 01 00 17 b1  20 70 40 b0 05 c4 12 55  |........ p@....U|
00000560  2d 80 18 02 00 fe 3d 00  00 01 01 08 0a 6f 8e cd  |-.....=......o..|
00000570  4d 6f 8e cd 4d 44 65 62  69 61 6e 20 47 4e 55 2f  |Mo..MDebian GNU/|
00000580  4c 69 6e 75 78 20 31 31  0d 0a f5 f8 cb 69 5f 21  |Linux 11.....i_!|
00000590  09 00 42 00 00 00 42 00  00 00 00 00 00 00 00 00  |..B...B.........|
000005a0  00 00 00 00 00 00 08 00  45 10 00 34 06 a6 40 00  |........E..4..@.|
000005b0  40 06 36 0c 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.6.......... ..|
000005c0  c4 12 55 2d 70 40 b0 1a  80 10 02 00 fe 28 00 00  |..U-p@.......(..|
000005d0  01 01 08 0a 6f 8e cd 79  6f 8e cd 4d f5 f8 cb 69  |....o..yo..M...i|
000005e0  6d 21 09 00 4c 00 00 00  4c 00 00 00 00 00 00 00  |m!..L...L.......|
000005f0  00 00 00 00 00 00 00 00  08 00 45 10 00 3e 4a 78  |..........E..>Jx|
00000600  40 00 40 06 f2 2f 7f 00  00 01 7f 00 00 01 00 17  |@.@../..........|
00000610  b1 20 70 40 b0 1a c4 12  55 2d 80 18 02 00 fe 32  |. p@....U-.....2|
00000620  00 00 01 01 08 0a 6f 8e  cd 79 6f 8e cd 79 6d 31  |......o..yo..ym1|
00000630  20 6c 6f 67 69 6e 3a 20  f5 f8 cb 69 76 21 09 00  | login: ...iv!..|
00000640  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
00000650  00 00 00 00 08 00 45 10  00 34 06 a7 40 00 40 06  |......E..4..@.@.|
00000660  36 0b 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |6.......... ....|
00000670  55 2d 70 40 b0 24 80 10  02 00 fe 28 00 00 01 01  |U-p@.$.....(....|
00000680  08 0a 6f 8e cd 79 6f 8e  cd 79 f6 f8 cb 69 b9 75  |..o..yo..y...i.u|
00000690  0d 00 43 00 00 00 43 00  00 00 00 00 00 00 00 00  |..C...C.........|
000006a0  00 00 00 00 00 00 08 00  45 10 00 35 06 a8 40 00  |........E..5..@.|
000006b0  40 06 36 09 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.6.......... ..|
000006c0  c4 12 55 2d 70 40 b0 24  80 18 02 00 fe 29 00 00  |..U-p@.$.....)..|
000006d0  01 01 08 0a 6f 8e d2 7c  6f 8e cd 79 68 f6 f8 cb  |....o..|o..yh...|
000006e0  69 2b 76 0d 00 43 00 00  00 43 00 00 00 00 00 00  |i+v..C...C......|
000006f0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 35 4a  |...........E..5J|
00000700  79 40 00 40 06 f2 37 7f  00 00 01 7f 00 00 01 00  |y@.@..7.........|
00000710  17 b1 20 70 40 b0 24 c4  12 55 2e 80 18 02 00 fe  |.. p@.$..U......|
00000720  29 00 00 01 01 08 0a 6f  8e d2 7c 6f 8e d2 7c 68  |)......o..|o..|h|
00000730  f6 f8 cb 69 33 76 0d 00  42 00 00 00 42 00 00 00  |...i3v..B...B...|
00000740  00 00 00 00 00 00 00 00  00 00 00 00 08 00 45 10  |..............E.|
00000750  00 34 06 a9 40 00 40 06  36 09 7f 00 00 01 7f 00  |.4..@.@.6.......|
00000760  00 01 b1 20 00 17 c4 12  55 2e 70 40 b0 25 80 10  |... ....U.p@.%..|
00000770  02 00 fe 28 00 00 01 01  08 0a 6f 8e d2 7c 6f 8e  |...(......o..|o.|
00000780  d2 7c f7 f8 cb 69 34 6d  04 00 43 00 00 00 43 00  |.|...i4m..C...C.|
00000790  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
000007a0  45 10 00 35 06 aa 40 00  40 06 36 07 7f 00 00 01  |E..5..@.@.6.....|
000007b0  7f 00 00 01 b1 20 00 17  c4 12 55 2e 70 40 b0 25  |..... ....U.p@.%|
000007c0  80 18 02 00 fe 29 00 00  01 01 08 0a 6f 8e d4 14  |.....)......o...|
000007d0  6f 8e d2 7c 6f f7 f8 cb  69 7e 6d 04 00 43 00 00  |o..|o...i~m..C..|
000007e0  00 43 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.C..............|
000007f0  00 08 00 45 10 00 35 4a  7a 40 00 40 06 f2 36 7f  |...E..5Jz@.@..6.|
00000800  00 00 01 7f 00 00 01 00  17 b1 20 70 40 b0 25 c4  |.......... p@.%.|
00000810  12 55 2f 80 18 02 00 fe  29 00 00 01 01 08 0a 6f  |.U/.....)......o|
00000820  8e d4 14 6f 8e d4 14 6f  f7 f8 cb 69 84 6d 04 00  |...o...o...i.m..|
00000830  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
00000840  00 00 00 00 08 00 45 10  00 34 06 ab 40 00 40 06  |......E..4..@.@.|
00000850  36 07 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |6.......... ....|
00000860  55 2f 70 40 b0 26 80 10  02 00 fe 28 00 00 01 01  |U/p@.&.....(....|
00000870  08 0a 6f 8e d4 14 6f 8e  d4 14 f7 f8 cb 69 6c d8  |..o...o......il.|
00000880  07 00 43 00 00 00 43 00  00 00 00 00 00 00 00 00  |..C...C.........|
00000890  00 00 00 00 00 00 08 00  45 10 00 35 06 ac 40 00  |........E..5..@.|
000008a0  40 06 36 05 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.6.......... ..|
000008b0  c4 12 55 2f 70 40 b0 26  80 18 02 00 fe 29 00 00  |..U/p@.&.....)..|
000008c0  01 01 08 0a 6f 8e d4 f4  6f 8e d4 14 6d f7 f8 cb  |....o...o...m...|
000008d0  69 c9 d8 07 00 43 00 00  00 43 00 00 00 00 00 00  |i....C...C......|
000008e0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 35 4a  |...........E..5J|
000008f0  7b 40 00 40 06 f2 35 7f  00 00 01 7f 00 00 01 00  |{@.@..5.........|
00000900  17 b1 20 70 40 b0 26 c4  12 55 30 80 18 02 00 fe  |.. p@.&..U0.....|
00000910  29 00 00 01 01 08 0a 6f  8e d4 f4 6f 8e d4 f4 6d  |)......o...o...m|
00000920  f7 f8 cb 69 d1 d8 07 00  42 00 00 00 42 00 00 00  |...i....B...B...|
00000930  00 00 00 00 00 00 00 00  00 00 00 00 08 00 45 10  |..............E.|
00000940  00 34 06 ad 40 00 40 06  36 05 7f 00 00 01 7f 00  |.4..@.@.6.......|
00000950  00 01 b1 20 00 17 c4 12  55 30 70 40 b0 27 80 10  |... ....U0p@.'..|
00000960  02 00 fe 28 00 00 01 01  08 0a 6f 8e d4 f4 6f 8e  |...(......o...o.|
00000970  d4 f4 f7 f8 cb 69 ef 4f  09 00 43 00 00 00 43 00  |.....i.O..C...C.|
00000980  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00000990  45 10 00 35 06 ae 40 00  40 06 36 03 7f 00 00 01  |E..5..@.@.6.....|
000009a0  7f 00 00 01 b1 20 00 17  c4 12 55 30 70 40 b0 27  |..... ....U0p@.'|
000009b0  80 18 02 00 fe 29 00 00  01 01 08 0a 6f 8e d5 54  |.....)......o..T|
000009c0  6f 8e d4 f4 65 f7 f8 cb  69 6b 50 09 00 43 00 00  |o...e...ikP..C..|
000009d0  00 43 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.C..............|
000009e0  00 08 00 45 10 00 35 4a  7c 40 00 40 06 f2 34 7f  |...E..5J|@.@..4.|
000009f0  00 00 01 7f 00 00 01 00  17 b1 20 70 40 b0 27 c4  |.......... p@.'.|
00000a00  12 55 31 80 18 02 00 fe  29 00 00 01 01 08 0a 6f  |.U1.....)......o|
00000a10  8e d5 55 6f 8e d5 54 65  f7 f8 cb 69 73 50 09 00  |..Uo..Te...isP..|
00000a20  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
00000a30  00 00 00 00 08 00 45 10  00 34 06 af 40 00 40 06  |......E..4..@.@.|
00000a40  36 03 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |6.......... ....|
00000a50  55 31 70 40 b0 28 80 10  02 00 fe 28 00 00 01 01  |U1p@.(.....(....|
00000a60  08 0a 6f 8e d5 55 6f 8e  d5 55 f7 f8 cb 69 2a ba  |..o..Uo..U...i*.|
00000a70  0c 00 43 00 00 00 43 00  00 00 00 00 00 00 00 00  |..C...C.........|
00000a80  00 00 00 00 00 00 08 00  45 10 00 35 06 b0 40 00  |........E..5..@.|
00000a90  40 06 36 01 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.6.......... ..|
00000aa0  c4 12 55 31 70 40 b0 28  80 18 02 00 fe 29 00 00  |..U1p@.(.....)..|
00000ab0  01 01 08 0a 6f 8e d6 34  6f 8e d5 55 72 f7 f8 cb  |....o..4o..Ur...|
00000ac0  69 8f ba 0c 00 43 00 00  00 43 00 00 00 00 00 00  |i....C...C......|
00000ad0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 35 4a  |...........E..5J|
00000ae0  7d 40 00 40 06 f2 33 7f  00 00 01 7f 00 00 01 00  |}@.@..3.........|
00000af0  17 b1 20 70 40 b0 28 c4  12 55 32 80 18 02 00 fe  |.. p@.(..U2.....|
00000b00  29 00 00 01 01 08 0a 6f  8e d6 34 6f 8e d6 34 72  |)......o..4o..4r|
00000b10  f7 f8 cb 69 97 ba 0c 00  42 00 00 00 42 00 00 00  |...i....B...B...|
00000b20  00 00 00 00 00 00 00 00  00 00 00 00 08 00 45 10  |..............E.|
00000b30  00 34 06 b1 40 00 40 06  36 01 7f 00 00 01 7f 00  |.4..@.@.6.......|
00000b40  00 01 b1 20 00 17 c4 12  55 32 70 40 b0 29 80 10  |... ....U2p@.)..|
00000b50  02 00 fe 28 00 00 01 01  08 0a 6f 8e d6 34 6f 8e  |...(......o..4o.|
00000b60  d6 34 f8 f8 cb 69 00 b2  03 00 44 00 00 00 44 00  |.4...i....D...D.|
00000b70  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00000b80  45 10 00 36 06 b2 40 00  40 06 35 fe 7f 00 00 01  |E..6..@.@.5.....|
00000b90  7f 00 00 01 b1 20 00 17  c4 12 55 32 70 40 b0 29  |..... ....U2p@.)|
00000ba0  80 18 02 00 fe 2a 00 00  01 01 08 0a 6f 8e d7 cc  |.....*......o...|
00000bb0  6f 8e d6 34 0d 00 f8 f8  cb 69 75 b2 03 00 44 00  |o..4.....iu...D.|
00000bc0  00 00 44 00 00 00 00 00  00 00 00 00 00 00 00 00  |..D.............|
00000bd0  00 00 08 00 45 10 00 36  4a 7e 40 00 40 06 f2 31  |....E..6J~@.@..1|
00000be0  7f 00 00 01 7f 00 00 01  00 17 b1 20 70 40 b0 29  |........... p@.)|
00000bf0  c4 12 55 34 80 18 02 00  fe 2a 00 00 01 01 08 0a  |..U4.....*......|
00000c00  6f 8e d7 cc 6f 8e d7 cc  0d 0a f8 f8 cb 69 8b b2  |o...o........i..|
00000c10  03 00 42 00 00 00 42 00  00 00 00 00 00 00 00 00  |..B...B.........|
00000c20  00 00 00 00 00 00 08 00  45 10 00 34 06 b3 40 00  |........E..4..@.|
00000c30  40 06 35 ff 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.5.......... ..|
00000c40  c4 12 55 34 70 40 b0 2b  80 10 02 00 fe 28 00 00  |..U4p@.+.....(..|
00000c50  01 01 08 0a 6f 8e d7 cc  6f 8e d7 cc f8 f8 cb 69  |....o...o......i|
00000c60  f2 b5 03 00 4c 00 00 00  4c 00 00 00 00 00 00 00  |....L...L.......|
00000c70  00 00 00 00 00 00 00 00  08 00 45 10 00 3e 4a 7f  |..........E..>J.|
00000c80  40 00 40 06 f2 28 7f 00  00 01 7f 00 00 01 00 17  |@.@..(..........|
00000c90  b1 20 70 40 b0 2b c4 12  55 34 80 18 02 00 fe 32  |. p@.+..U4.....2|
00000ca0  00 00 01 01 08 0a 6f 8e  d7 cd 6f 8e d7 cc 50 61  |......o...o...Pa|
00000cb0  73 73 77 6f 72 64 3a 20  f8 f8 cb 69 f9 b5 03 00  |ssword: ...i....|
00000cc0  42 00 00 00 42 00 00 00  00 00 00 00 00 00 00 00  |B...B...........|
00000cd0  00 00 00 00 08 00 45 10  00 34 06 b4 40 00 40 06  |......E..4..@.@.|
00000ce0  35 fe 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |5.......... ....|
00000cf0  55 34 70 40 b0 35 80 10  02 00 fe 28 00 00 01 01  |U4p@.5.....(....|
00000d00  08 0a 6f 8e d7 cd 6f 8e  d7 cd f9 f8 cb 69 13 e6  |..o...o......i..|
00000d10  05 00 43 00 00 00 43 00  00 00 00 00 00 00 00 00  |..C...C.........|
00000d20  00 00 00 00 00 00 08 00  45 10 00 35 06 b5 40 00  |........E..5..@.|
00000d30  40 06 35 fc 7f 00 00 01  7f 00 00 01 b1 20 00 17  |@.5.......... ..|
00000d40  c4 12 55 34 70 40 b0 35  80 18 02 00 fe 29 00 00  |..U4p@.5.....)..|
00000d50  01 01 08 0a 6f 8e dc 45  6f 8e d7 cd 6d f9 f8 cb  |....o..Eo...m...|
00000d60  69 1d 91 06 00 42 00 00  00 42 00 00 00 00 00 00  |i....B...B......|
00000d70  00 00 00 00 00 00 00 00  00 08 00 45 10 00 34 4a  |...........E..4J|
00000d80  80 40 00 40 06 f2 31 7f  00 00 01 7f 00 00 01 00  |.@.@..1.........|
00000d90  17 b1 20 70 40 b0 35 c4  12 55 35 80 10 02 00 fe  |.. p@.5..U5.....|
00000da0  28 00 00 01 01 08 0a 6f  8e dc 71 6f 8e dc 45 f9  |(......o..qo..E.|
00000db0  f8 cb 69 b9 d1 08 00 43  00 00 00 43 00 00 00 00  |..i....C...C....|
00000dc0  00 00 00 00 00 00 00 00  00 00 00 08 00 45 10 00  |.............E..|
00000dd0  35 06 b6 40 00 40 06 35  fb 7f 00 00 01 7f 00 00  |5..@.@.5........|
00000de0  01 b1 20 00 17 c4 12 55  35 70 40 b0 35 80 18 02  |.. ....U5p@.5...|
00000df0  00 fe 29 00 00 01 01 08  0a 6f 8e dd 04 6f 8e dc  |..)......o...o..|
00000e00  71 6f f9 f8 cb 69 e1 d1  08 00 42 00 00 00 42 00  |qo...i....B...B.|
00000e10  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00000e20  45 10 00 34 4a 81 40 00  40 06 f2 30 7f 00 00 01  |E..4J.@.@..0....|
00000e30  7f 00 00 01 00 17 b1 20  70 40 b0 35 c4 12 55 36  |....... p@.5..U6|
00000e40  80 10 02 00 fe 28 00 00  01 01 08 0a 6f 8e dd 04  |.....(......o...|
00000e50  6f 8e dd 04 f9 f8 cb 69  66 39 0d 00 43 00 00 00  |o......if9..C...|
00000e60  43 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |C...............|
00000e70  08 00 45 10 00 35 06 b7  40 00 40 06 35 fa 7f 00  |..E..5..@.@.5...|
00000e80  00 01 7f 00 00 01 b1 20  00 17 c4 12 55 36 70 40  |....... ....U6p@|
00000e90  b0 35 80 18 02 00 fe 29  00 00 01 01 08 0a 6f 8e  |.5.....)......o.|
00000ea0  de 25 6f 8e dd 04 74 f9  f8 cb 69 92 39 0d 00 42  |.%o...t...i.9..B|
00000eb0  00 00 00 42 00 00 00 00  00 00 00 00 00 00 00 00  |...B............|
00000ec0  00 00 00 08 00 45 10 00  34 4a 82 40 00 40 06 f2  |.....E..4J.@.@..|
00000ed0  2f 7f 00 00 01 7f 00 00  01 00 17 b1 20 70 40 b0  |/........... p@.|
00000ee0  35 c4 12 55 37 80 10 02  00 fe 28 00 00 01 01 08  |5..U7.....(.....|
00000ef0  0a 6f 8e de 25 6f 8e de  25 fa f8 cb 69 d7 dd 01  |.o..%o..%...i...|
00000f00  00 43 00 00 00 43 00 00  00 00 00 00 00 00 00 00  |.C...C..........|
00000f10  00 00 00 00 00 08 00 45  10 00 35 06 b8 40 00 40  |.......E..5..@.@|
00000f20  06 35 f9 7f 00 00 01 7f  00 00 01 b1 20 00 17 c4  |.5.......... ...|
00000f30  12 55 37 70 40 b0 35 80  18 02 00 fe 29 00 00 01  |.U7p@.5.....)...|
00000f40  01 08 0a 6f 8e df 25 6f  8e de 25 64 fa f8 cb 69  |...o..%o..%d...i|
00000f50  22 de 01 00 42 00 00 00  42 00 00 00 00 00 00 00  |"...B...B.......|
00000f60  00 00 00 00 00 00 00 00  08 00 45 10 00 34 4a 83  |..........E..4J.|
00000f70  40 00 40 06 f2 2e 7f 00  00 01 7f 00 00 01 00 17  |@.@.............|
00000f80  b1 20 70 40 b0 35 c4 12  55 38 80 10 02 00 fe 28  |. p@.5..U8.....(|
00000f90  00 00 01 01 08 0a 6f 8e  df 25 6f 8e df 25 fa f8  |......o..%o..%..|
00000fa0  cb 69 ee 54 03 00 43 00  00 00 43 00 00 00 00 00  |.i.T..C...C.....|
00000fb0  00 00 00 00 00 00 00 00  00 00 08 00 45 10 00 35  |............E..5|
00000fc0  06 b9 40 00 40 06 35 f8  7f 00 00 01 7f 00 00 01  |..@.@.5.........|
00000fd0  b1 20 00 17 c4 12 55 38  70 40 b0 35 80 18 02 00  |. ....U8p@.5....|
00000fe0  fe 29 00 00 01 01 08 0a  6f 8e df 85 6f 8e df 25  |.)......o...o..%|
00000ff0  65 fa f8 cb 69 fb 54 03  00 42 00 00 00 42 00 00  |e...i.T..B...B..|
00001000  00 00 00 00 00 00 00 00  00 00 00 00 00 08 00 45  |...............E|
00001010  10 00 34 4a 84 40 00 40  06 f2 2d 7f 00 00 01 7f  |..4J.@.@..-.....|
00001020  00 00 01 00 17 b1 20 70  40 b0 35 c4 12 55 39 80  |...... p@.5..U9.|
00001030  10 02 00 fe 28 00 00 01  01 08 0a 6f 8e df 85 6f  |....(......o...o|
00001040  8e df 85 fa f8 cb 69 98  1f 07 00 43 00 00 00 43  |......i....C...C|
00001050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 08  |................|
00001060  00 45 10 00 35 06 ba 40  00 40 06 35 f7 7f 00 00  |.E..5..@.@.5....|
00001070  01 7f 00 00 01 b1 20 00  17 c4 12 55 39 70 40 b0  |...... ....U9p@.|
00001080  35 80 18 02 00 fe 29 00  00 01 01 08 0a 6f 8e e0  |5.....)......o..|
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000010c0  7f 00 00 01 7f 00 00 01  00 17 b1 20 70 40 b0 35  |........... p@.5|
000010d0  c4 12 55 3a 80 10 02 00  fe 28 00 00 01 01 08 0a  |..U:.....(......|
000010e0  6f 8e e0 7d 6f 8e e0 7d  fa f8 cb 69 c3 94 08 00  |o..}o..}...i....|
000010f0  43 00 00 00 43 00 00 00  00 00 00 00 00 00 00 00  |C...C...........|
00001100  00 00 00 00 08 00 45 10  00 35 06 bb 40 00 40 06  |......E..5..@.@.|
00001110  35 f6 7f 00 00 01 7f 00  00 01 b1 20 00 17 c4 12  |5.......... ....|
00001120  55 3a 70 40 b0 35 80 18  02 00 fe 29 00 00 01 01  |U:p@.5.....)....|
00001130  08 0a 6f 8e e0 dd 6f 8e  e0 7d 61 fa f8 cb 69 d0  |..o...o..}a...i.|
00001140  94 08 00 42 00 00 00 42  00 00 00 00 00 00 00 00  |...B...B........|
00001150  00 00 00 00 00 00 00 08  00 45 10 00 34 4a 86 40  |.........E..4J.@|
00001160  00 40 06 f2 2b 7f 00 00  01 7f 00 00 01 00 17 b1  |.@..+...........|
00001170  20 70 40 b0 35 c4 12 55  3b 80 10 02 00 fe 28 00  | p@.5..U;.....(.|
00001180  00 01 01 08 0a 6f 8e e0  dd 6f 8e e0 dd fa f8 cb  |.....o...o......|
00001190  69 97 00 0c 00 43 00 00  00 43 00 00 00 00 00 00  |i....C...C......|
000011a0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 35 06  |...........E..5.|
000011b0  bc 40 00 40 06 35 f5 7f  00 00 01 7f 00 00 01 b1  |.@.@.5..........|
000011c0  20 00 17 c4 12 55 3b 70  40 b0 35 80 18 02 00 fe  | ....U;p@.5.....|
000011d0  29 00 00 01 01 08 0a 6f  8e e1 bd 6f 8e e0 dd 73  |)......o...o...s|
000011e0  fa f8 cb 69 a2 00 0c 00  42 00 00 00 42 00 00 00  |...i....B...B...|
000011f0  00 00 00 00 00 00 00 00  00 00 00 00 08 00 45 10  |..............E.|
00001200  00 34 4a 87 40 00 40 06  f2 2a 7f 00 00 01 7f 00  |.4J.@.@..*......|
00001210  00 01 00 17 b1 20 70 40  b0 35 c4 12 55 3c 80 10  |..... p@.5..U<..|
00001220  02 00 fe 28 00 00 01 01  08 0a 6f 8e e1 bd 6f 8e  |...(......o...o.|
00001230  e1 bd fb f8 cb 69 b5 27  00 00 43 00 00 00 43 00  |.....i.'..C...C.|
00001240  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00001250  45 10 00 35 06 bd 40 00  40 06 35 f4 7f 00 00 01  |E..5..@.@.5.....|
00001260  7f 00 00 01 b1 20 00 17  c4 12 55 3c 70 40 b0 35  |..... ....U<p@.5|
00001270  80 18 02 00 fe 29 00 00  01 01 08 0a 6f 8e e2 9c  |.....)......o...|
00001280  6f 8e e1 bd 73 fb f8 cb  69 c1 27 00 00 42 00 00  |o...s...i.'..B..|
00001290  00 42 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.B..............|
000012a0  00 08 00 45 10 00 34 4a  88 40 00 40 06 f2 29 7f  |...E..4J.@.@..).|
000012b0  00 00 01 7f 00 00 01 00  17 b1 20 70 40 b0 35 c4  |.......... p@.5.|
000012c0  12 55 3d 80 10 02 00 fe  28 00 00 01 01 08 0a 6f  |.U=.....(......o|
000012d0  8e e2 9c 6f 8e e2 9c fb  f8 cb 69 5b 8f 04 00 43  |...o......i[...C|
000012e0  00 00 00 43 00 00 00 00  00 00 00 00 00 00 00 00  |...C............|
000012f0  00 00 00 08 00 45 10 00  35 06 be 40 00 40 06 35  |.....E..5..@.@.5|
00001300  f3 7f 00 00 01 7f 00 00  01 b1 20 00 17 c4 12 55  |.......... ....U|
00001310  3d 70 40 b0 35 80 18 02  00 fe 29 00 00 01 01 08  |=p@.5.....).....|
00001320  0a 6f 8e e3 bd 6f 8e e2  9c 65 fb f8 cb 69 82 8f  |.o...o...e...i..|
00001330  04 00 42 00 00 00 42 00  00 00 00 00 00 00 00 00  |..B...B.........|
00001340  00 00 00 00 00 00 08 00  45 10 00 34 4a 89 40 00  |........E..4J.@.|
00001350  40 06 f2 28 7f 00 00 01  7f 00 00 01 00 17 b1 20  |@..(........... |
00001360  70 40 b0 35 c4 12 55 3e  80 10 02 00 fe 28 00 00  |p@.5..U>.....(..|
00001370  01 01 08 0a 6f 8e e3 bd  6f 8e e3 bd fb f8 cb 69  |....o...o......i|
00001380  51 d4 08 00 44 00 00 00  44 00 00 00 00 00 00 00  |Q...D...D.......|
00001390  00 00 00 00 00 00 00 00  08 00 45 10 00 36 06 bf  |..........E..6..|
000013a0  40 00 40 06 35 f1 7f 00  00 01 7f 00 00 01 b1 20  |@.@.5.......... |
000013b0  00 17 c4 12 55 3e 70 40  b0 35 80 18 02 00 fe 2a  |....U>p@.5.....*|
000013c0  00 00 01 01 08 0a 6f 8e  e4 d5 6f 8e e3 bd 0d 00  |......o...o.....|
000013d0  fb f8 cb 69 6c d4 08 00  42 00 00 00 42 00 00 00  |...il...B...B...|
000013e0  00 00 00 00 00 00 00 00  00 00 00 00 08 00 45 10  |..............E.|
000013f0  00 34 4a 8a 40 00 40 06  f2 27 7f 00 00 01 7f 00  |.4J.@.@..'......|
00001400  00 01 00 17 b1 20 70 40  b0 35 c4 12 55 40 80 10  |..... p@.5..U@..|
00001410  02 00 fe 28 00 00 01 01  08 0a 6f 8e e4 d5 6f 8e  |...(......o...o.|
00001420  e4 d5 fb f8 cb 69 2f e3  08 00 44 00 00 00 44 00  |.....i/...D...D.|
00001430  00 00 00 00 00 00 00 00  00 00 00 00 00 00 08 00  |................|
00001440  45 10 00 36 4a 8b 40 00  40 06 f2 24 7f 00 00 01  |E..6J.@.@..$....|
00001450  7f 00 00 01 00 17 b1 20  70 40 b0 35 c4 12 55 40  |....... p@.5..U@|
00001460  80 18 02 00 fe 2a 00 00  01 01 08 0a 6f 8e e4 d9  |.....*......o...|
00001470  6f 8e e4 d5 0d 0a fb f8  cb 69 36 e3 08 00 42 00  |o........i6...B.|
00001480  00 00 42 00 00 00 00 00  00 00 00 00 00 00 00 00  |..B.............|
00001490  00 00 08 00 45 10 00 34  06 c0 40 00 40 06 35 f2  |....E..4..@.@.5.|
000014a0  7f 00 00 01 7f 00 00 01  b1 20 00 17 c4 12 55 40  |......... ....U@|
000014b0  70 40 b0 37 80 10 02 00  fe 28 00 00 01 01 08 0a  |p@.7.....(......|
000014c0  6f 8e e4 d9 6f 8e e4 d9  fb f8 cb 69 2a 51 09 00  |o...o......i*Q..|
000014d0  59 02 00 00 59 02 00 00  00 00 00 00 00 00 00 00  |Y...Y...........|
000014e0  00 00 00 00 08 00 45 10  02 4b 4a 8c 40 00 40 06  |......E..KJ.@.@.|
000014f0  f0 0e 7f 00 00 01 7f 00  00 01 00 17 b1 20 70 40  |............. p@|
00001500  b0 37 c4 12 55 40 80 18  02 00 00 40 00 00 01 01  |.7..U@.....@....|
00001510  08 0a 6f 8e e4 f5 6f 8e  e4 d9 4c 69 6e 75 78 20  |..o...o...Linux |
00001520  6d 31 20 35 2e 31 30 2e  30 2d 33 39 2d 61 6d 64  |m1 5.10.0-39-amd|
00001530  36 34 20 23 31 20 53 4d  50 20 44 65 62 69 61 6e  |64 #1 SMP Debian|
00001540  20 35 2e 31 30 2e 32 35  31 2d 31 20 28 32 30 32  | 5.10.251-1 (202|
00001550  36 2d 30 33 2d 30 39 29  20 78 38 36 5f 36 34 0d  |6-03-09) x86_64.|
00001560  0a 44 65 62 69 61 6e 20  31 31 2e 32 20 20 32 39  |.Debian 11.2  29|
00001570  2f 30 39 2f 32 30 32 35  0d 0a 5f 5f 5f 5f 5f 5f  |/09/2025..______|
00001580  5f 5f 20 20 20 20 20 20  20 20 20 20 20 20 20 5f  |__             _|
00001590  5f 5f 5f 5f 20 20 20 20  20 20 20 20 20 20 20 20  |____            |
000015a0  20 20 20 0d 0a 5f 5f 5f  20 20 5f 5f 20 5c 5f 5f  |   ..___  __ \__|
000015b0  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 28 5f 29  |_____________(_)|
000015c0  5f 5f 5f 5f 5f 20 5f 5f  5f 5f 5f 5f 5f 20 0d 0a  |_____ _______ ..|
000015d0  5f 5f 20 20 2f 20 2f 20  2f 20 20 5f 5f 20 5c 5f  |__  / / /  __ \_|
000015e0  20 20 5f 5f 5f 2f 5f 20  20 2f 5f 20 20 5f 5f 20  |  ___/_  /_  __ |
000015f0  60 2f 5f 20 20 5f 5f 20  5c 0d 0a 5f 20 20 2f 5f  |`/_  __ \.._  /_|
00001600  2f 20 2f 2f 20 2f 5f 2f  20 2f 20 20 2f 20 20 20  |/ // /_/ /  /   |
00001610  5f 20 20 2f 20 2f 20 2f  5f 2f 20 2f 5f 20 20 2f  |_  / / /_/ /_  /|
00001620  20 2f 20 2f 0d 0a 2f 5f  5f 5f 5f 5f 2f 20 5c 5f  | / /../_____/ \_|
00001630  5f 5f 5f 2f 2f 5f 2f 20  20 20 20 2f 5f 2f 20 20  |___//_/    /_/  |
00001640  5c 5f 5f 2c 5f 2f 20 2f  5f 2f 20 2f 5f 2f 20 0d  |\__,_/ /_/ /_/ .|
00001650  0a 6d 61 63 68 69 6e 65  20 72 c3 a9 67 6c c3 a9  |.machine r..gl..|
00001660  65 20 70 6f 75 72 61 20  6d 61 69 73 6f 6e 20 73  |e poura maison s|
00001670  61 6e 73 20 61 75 63 75  6e 20 70 72 6f 78 79 20  |ans aucun proxy |
00001680  28 2f 65 74 63 2f 65 6e  76 69 72 6f 6e 6d 65 6e  |(/etc/environmen|
00001690  74 29 0d 0a 72 6f 6f 74  20 2f 20 70 61 73 73 77  |t)..root / passw|
000016a0  64 3a 20 64 65 62 69 61  6e 0d 0a 20 20 20 20 20  |d: debian..     |
000016b0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000016c0  20 20 20 20 20 20 20 20  20 20 0d 0a 6c 6f 67 69  |          ..logi|
000016d0  6e 20 3a 65 74 75 64 69  61 6e 74 0d 0a 70 61 73  |n :etudiant..pas|
000016e0  73 77 64 3a 65 74 75 64  69 61 6e 74 0d 0a 4c 61  |swd:etudiant..La|
000016f0  73 74 20 6c 6f 67 69 6e  3a 20 54 75 65 20 4d 61  |st login: Tue Ma|
00001700  72 20 33 31 20 31 38 3a  34 30 3a 30 39 20 43 45  |r 31 18:40:09 CE|
00001710  53 54 20 32 30 32 36 20  66 72 6f 6d 20 6c 6f 63  |ST 2026 from loc|
00001720  61 6c 68 6f 73 74 20 6f  6e 20 70 74 73 2f 30 0d  |alhost on pts/0.|
00001730  0a fb f8 cb 69 33 51 09  00 42 00 00 00 42 00 00  |....i3Q..B...B..|
00001740  00 00 00 00 00 00 00 00  00 00 00 00 00 08 00 45  |...............E|
00001750  10 00 34 06 c1 40 00 40  06 35 f1 7f 00 00 01 7f  |..4..@.@.5......|
00001760  00 00 01 b1 20 00 17 c4  12 55 40 70 40 b2 4e 80  |.... ....U@p@.N.|
00001770  10 01 fc fe 28 00 00 01  01 08 0a 6f 8e e4 f5 6f  |....(......o...o|
00001780  8e e4 f5 fb f8 cb 69 25  b8 09 00 4a 00 00 00 4a  |......i%...J...J|
00001790  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 08  |................|
000017a0  00 45 10 00 3c 4a 8d 40  00 40 06 f2 1c 7f 00 00  |.E..<J.@.@......|
000017b0  01 7f 00 00 01 00 17 b1  20 70 40 b2 4e c4 12 55  |........ p@.N..U|
000017c0  40 80 18 02 00 fe 30 00  00 01 01 08 0a 6f 8e e5  |@.....0......o..|
000017d0  0f 6f 8e e4 f5 1b 5b 3f  32 30 30 34 68 fb f8 cb  |.o....[?2004h...|
000017e0  69 2f b8 09 00 42 00 00  00 42 00 00 00 00 00 00  |i/...B...B......|
000017f0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 34 06  |...........E..4.|
00001800  c2 40 00 40 06 35 f0 7f  00 00 01 7f 00 00 01 b1  |.@.@.5..........|
00001810  20 00 17 c4 12 55 40 70  40 b2 56 80 10 01 fc fe  | ....U@p@.V.....|
00001820  28 00 00 01 01 08 0a 6f  8e e5 0f 6f 8e e5 0f fb  |(......o...o....|
00001830  f8 cb 69 78 b8 09 00 4e  00 00 00 4e 00 00 00 00  |..ix...N...N....|
00001840  00 00 00 00 00 00 00 00  00 00 00 08 00 45 10 00  |.............E..|
00001850  40 4a 8e 40 00 40 06 f2  17 7f 00 00 01 7f 00 00  |@J.@.@..........|
00001860  01 00 17 b1 20 70 40 b2  56 c4 12 55 40 80 18 02  |.... p@.V..U@...|
00001870  00 fe 34 00 00 01 01 08  0a 6f 8e e5 0f 6f 8e e5  |..4......o...o..|
00001880  0f 68 6f 6d 65 72 40 6d  31 3a 7e 24 20 fb f8 cb  |.homer@m1:~$ ...|
00001890  69 86 b8 09 00 42 00 00  00 42 00 00 00 00 00 00  |i....B...B......|
000018a0  00 00 00 00 00 00 00 00  00 08 00 45 10 00 34 06  |...........E..4.|
000018b0  c3 40 00 40 06 35 ef 7f  00 00 01 7f 00 00 01 b1  |.@.@.5..........|
000018c0  20 00 17 c4 12 55 40 70  40 b2 62 80 10 01 fc fe  | ....U@p@.b.....|
000018d0  28 00 00 01 01 08 0a 6f  8e e5 0f 6f 8e e5 0f     |(......o...o...|
000018df

    Usage du client telnet (permet de se connecter Ă  distance sur une machine)

    dans un autre terminal , se connecter en tant qu’etudiant (un simple user qui va prĂŞter son accès Ă  homer)

    Homer va comme un grand naĂŻf se connecter ! avec une session le client telnet 

    telnet 127.0.0.1
    login: homer
password: motdepasse

    trop tard homer !! a fait l’erreur de sa vie !

    tshark

    TShark est la version en ligne de commande de Wireshark, le célèbre analyseur de protocoles réseau.

    https://www.wireshark.org/docs/man-pages/tshark.html

    Le hacker , va récupérer la captation de la connexion de homer ! (voir le tcpdump)

    maintenant vous retourner dans votre session root .. et ctrl+c pour interrompre la capture !

    ensuite l’expert !! vous !! va utilser tshark (wireshark en texte) qui va dĂ©coder la capture (le fichier .pcap)

    tshark -r capture_telnet.pcap -q -z follow,tcp,ascii,0 > session_complete.txt
cat session_complete.txt

    A quoi sert l’option -r

    A quoi sert l’option -q

    A quoi sert l’option -z follow,tcp,ascii,0

    Retrouver le mot de passe de homer dans l’analyse du fichier session_complete.txt

    normalement vous devez obtenir quelque chose comme cela :

    session_complete.txt 
    cat session_telnet.txt 

===================================================================
Follow: tcp,ascii
Filter: tcp.stream eq 0
Node 0: 127.0.0.1:45344
Node 1: 127.0.0.1:23
24
........... ..!.."..'...
	12
..... ..#..'
3
..#
	33
........!.."..... .....'.........
43
....d.%.... .38400,38400....'.......linux..
	3
...
3
...
	3
...
3
...
	21
Debian GNU/Linux 11

	10
m1 login: 
1
h
	1
h
1
o
	1
o
1
m
	1
m
1
e
	1
e
1
r
	1
r
2
.
	2


	10
Password: 
1
m
1
o
1
t
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Linux m1 5.10.0-39-amd64 #1 SMP Debian 5.10.251-1 (2026-03-09) x86_64
Debian 11.2  29/09/2025
________             _____               
___  __ \_______________(_)_____ _______ 
__  / / /  __ \_  ___/_  /_  __ `/_  __ \
_  /_/ // /_/ /  /   _  / / /_/ /_  / / /
/_____/ \____//_/    /_/  \__,_/ /_/ /_/ 
machine r..gl..e poura maison sans aucun proxy (/etc/environment)
root / passwd: debian
                               
login :etudiant
passwd:etudiant
Last login: Tue Mar 31 18:40:09 CEST 2026 from localhost on pts/0

	8
.[?2004h
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homer@m1:~$ 
===================================================================

    Évaluation (à rendre)

    • Question 1 : Quelle commande permet de capturer le trafic Telnet ?
    • Question 2 : Expliquez pourquoi le mot de passe apparaĂ®t caractère par caractère dans la capture.
    • Question 3 : Quelle commande permet de reconstituer la conversation Telnet ?
    • Question 4 : Citez deux raisons pour lesquelles Telnet est dangereux.
    • Question 5 : Quel protocole doit-on utiliser Ă  la place ? Pourquoi ?
    ProtocoleMot de passe visibleRecommandé
    Telnet✅ OUI❌ NON
    SSH❌ NON✅ OUI