Hello, meet me Capsoel which is not a tablet or even a pill..., this is my first writing in this ezine so sorry if there are still wrong EYD or messy vocabulary. Okay, let's get straight to it, maybe you hackers, crackers or whatever you call them have done a sniffing ritual, namely the activity of spying on network activity using Ethereal, Cain, DS-sniff software and so on. Or you software crackers who use tools to crack serial numbers or fiddle with the Windows registry often see strange numbers consisting of numbers and letters, you must be wondering what numbers are those which for newbies will certainly be difficult to reason let alone interpret hehe. Like the following display.
63 61 70 73 6f 65 6c 20 62 75 6b 61 6e 20 74 61 62 6c 65 74 20 61 70 61 6c 61 67 69 20 70 69 6c
atau
0x77 0x6f 0x77 0x20 0x63 0x61 0x70 0x73 0x6f
0x65 0x6c 0x20 0x6b 0x65 0x72 0x65 0x6eThe brains of you newbies, including me, must be wrinkled trying to interpret these numbers, which might even make you think these numbers have no meaning at all.
But make no mistake, that's what is called a Hexadecimal number. The author will explain what "hexadecimal" is. Hexadecimal is a combination of the words "hex" and "decimal", the word decimal from the word "dec" which means "10". meaning that there are 10 digits of numbering from this method (Dec) namely 0 1 2 3 4 5 6 7 8 9.
Next is (Hex) which means "6" which consists of abcdef, and when combined the two become 16 which means there are sixteen digits in the hexadecimal numbering system, namely 0 1 2 3 4 5 6 7 8 9 abcde f.
We all know that the data sent in the computer input-output process is processed in the form of bits or "binary digits" which are in the form of numbers 0 and 1 which means true or false (on and off), in hexadecimal bytes are divided into 2 parts where one byte is equal to 8 bits. The byte format is a format consisting of digits 0 or 1 totaling eight bits as follows:
00101010 00001011 10101111 10011001
10101101 10101011 01001001 00110101We can see that the numbers are really difficult to interpret, 
especially if the number is hundreds or thousands of digits, it can make your brain explode, haha.
Therefore, hexadecimal was created which breaks bytes into 4 bit units, which means we will have 16 combinations (256=16*16). Thus 1 byte block consisting of 8 bit digits is divided into 2 hexadecimal digits. Which is described as follows:
| 0000=0 | 0001=1 | 0010=2 | 0011=3 |
|--------|--------|--------|--------|
| 0100=4 | 0101=5 | 0110=6 | 0111=7 |
| 1000=8 | 1001=9 | 1010=a | 1011=b |
| 1100=c | 1101=d | 1110=e | 1111=f |So if you find a hexadecimal digit "A" the bit pattern is "1010". Hexadecimal is usually written in a special form to distinguish it from ordinary numbers / decimal. Hexadecimal numbers are usually written in the format "0x12", or "$12" or also "x12" so if you see a number like this in the windows registry or wherever it is not confusing anymore <now. .>
In the Hex Dump / Hex Editor display, there are usually three columns, the hexadecimal is in the middle, the left is the decimal digit offset and the right of the hexadecimal is the ASCII equivalent which is a translation of the hexadecimal so that we can interpret it and don't need to bother translating it.
For a clearer explanation of the relationship between Decimal, Hexadecimal, Octal, Binary and ANSI ASCII numbers, the following is a character table of these numbers.
| TABEL CHARACTER | | | | |
|-----------------|-------------|-------|----------|------------|
| Dec | Hexadecimal | Octal | Binary | ANSI ASCII |
| 000 | 0x00 | 000 | 00000000 | |
| 001 | 0x01 | 001 | 00000001 | |
| 002 | 0x02 | 002 | 00000010 | |
| 003 | 0x03 | 003 | 00000011 | |
| 004 | 0x04 | 004 | 00000100 | |
| 005 | 0x05 | 005 | 00000101 | |
| 006 | 0x06 | 006 | 00000110 | |
| 007 | 0x07 | 007 | 00000111 | |
| 008 | 0x08 | 010 | 00001000 | |
| 009 | 0x09 | 011 | 00001001 | |
| 010 | 0x0a | 012 | 00001010 | |
| 011 | 0x0b | 013 | 00001011 | |
| 012 | 0x0c | 014 | 00001100 | |
| 013 | 0x0d | 015 | 00001101 | |
| 014 | 0x0e | 016 | 00001110 | |
| 015 | 0x0f | 017 | 00001111 | |
| 016 | 0x10 | 020 | 00010000 | |
| 017 | 0x11 | 021 | 00010001 | |
| 018 | 0x12 | 022 | 00010010 | |
| 019 | 0x13 | 023 | 00010011 | |
| 020 | 0x14 | 024 | 00010100 | |
| 021 | 0x15 | 025 | 00010101 | |
| 022 | 0x16 | 026 | 00010110 | |
| 023 | 0x17 | 027 | 00010111 | |
| 024 | 0x18 | 030 | 00011000 | |
| 025 | 0x19 | 031 | 00011001 | |
| 026 | 0x1a | 032 | 00011010 | |
| 027 | 0x1b | 033 | 00011011 | |
| 028 | 0x1c | 034 | 00011100 | |
| 029 | 0x1d | 035 | 00011101 | |
| 030 | 0x1e | 036 | 00011110 | |
| 031 | 0x1f | 037 | 00011111 | |
| 032 | 0x20 | 040 | 00100000 | |
| 033 | 0x21 | 041 | 00100001 | ! |
| 034 | 0x22 | 042 | 00100010 | “ |
| 035 | 0x23 | 043 | 00100011 | # |
| 036 | 0x24 | 044 | 00100100 | $ |
| 037 | 0x25 | 045 | 00100101 | % |
| 038 | 0x26 | 046 | 00100110 | & |
| 039 | 0x27 | 047 | 00100111 | ' |
| 040 | 0x28 | 050 | 00101000 | ( |
| 041 | 0x29 | 051 | 00101001 | ) |
| 042 | 0x2a | 052 | 00101010 | * |
| 043 | 0x2b | 053 | 00101011 | + |
| 044 | 0x2c | 054 | 00101100 | , |
| 045 | 0x2d | 055 | 00101101 | - |
| 046 | 0x2e | 056 | 00101110 | . |
| 047 | 0x2f | 057 | 00101111 | / |
| 048 | 0x30 | 060 | 00110000 | 0 |
| 049 | 0x31 | 061 | 00110001 | 1 |
| 050 | 0x32 | 062 | 00110010 | 2 |
| 051 | 0x33 | 063 | 00110011 | 3 |
| 052 | 0x34 | 064 | 00110100 | 4 |
| 053 | 0x35 | 065 | 00110101 | 5 |
| 054 | 0x36 | 066 | 00110110 | 6 |
| 055 | 0x37 | 067 | 00110111 | 7 |
| 056 | 0x38 | 070 | 00111000 | 8 |
| 057 | 0x39 | 071 | 00111001 | 9 |
| 058 | 0x3a | 072 | 00111010 | : |
| 059 | 0x3b | 073 | 00111011 | ; |
| 060 | 0x3c | 074 | 00111100 | < |
| 061 | 0x3d | 075 | 00111101 | = |
| 062 | 0x3e | 076 | 00111110 | > |
| 063 | 0x3f | 077 | 00111111 | ? |
| 064 | 0x40 | 100 | 01000000 | @ |
| 065 | 0x41 | 101 | 01000001 | A |
| 066 | 0x42 | 102 | 01000010 | B |
| 067 | 0x43 | 103 | 01000011 | C |
| 068 | 0x44 | 104 | 01000100 | D |
| 069 | 0x45 | 105 | 01000101 | E |
| 070 | 0x46 | 106 | 01000110 | F |
| 071 | 0x47 | 107 | 01000111 | G |
| 072 | 0x48 | 110 | 01001000 | H |
| 073 | 0x49 | 111 | 01001001 | I |
| 074 | 0x4a | 112 | 01001010 | J |
| 075 | 0x4b | 113 | 01001011 | K |
| 076 | 0x4c | 114 | 01001100 | L |
| 077 | 0x4d | 115 | 01001101 | M |
| 078 | 0x4e | 116 | 01001110 | N |
| 079 | 0x4f | 117 | 01001111 | O |
| 080 | 0x50 | 120 | 01010000 | P |
| 081 | 0x51 | 121 | 01010001 | Q |
| 082 | 0x52 | 122 | 01010010 | R |
| 083 | 0x53 | 123 | 01010011 | S |
| 084 | 0x54 | 124 | 01010100 | T |
| 085 | 0x55 | 125 | 01010101 | U |
| 086 | 0x56 | 126 | 01010110 | V |
| 087 | 0x57 | 127 | 01010111 | W |
| 088 | 0x58 | 130 | 01011000 | X |
| 089 | 0x59 | 131 | 01011001 | Y |
| 090 | 0x5a | 132 | 01011010 | Z |
| 091 | 0x5b | 133 | 01011011 | [ |
| 092 | 0x5c | 134 | 01011100 | \ |
| 093 | 0x5d | 135 | 01011101 | ] |
| 094 | 0x5e | 136 | 01011110 | ^ |
| 095 | 0x5f | 137 | 01011111 | _ |
| 096 | 0x60 | 140 | 01100000 | ` |
| 097 | 0x61 | 141 | 01100001 | a |
| 098 | 0x62 | 142 | 01100010 | b |
| 099 | 0x63 | 143 | 01100011 | c |
| 100 | 0x64 | 144 | 01100100 | d |
| 101 | 0x65 | 145 | 01100101 | e |
| 102 | 0x66 | 146 | 01100110 | f |
| 103 | 0x67 | 147 | 01100111 | g |
| 104 | 0x68 | 150 | 01101000 | h |
| 105 | 0x69 | 151 | 01101001 | i |
| 106 | 0x6a | 152 | 01101010 | j |
| 107 | 0x6b | 153 | 01101011 | k |
| 108 | 0x6c | 154 | 01101100 | l |
| 109 | 0x6d | 155 | 01101101 | m |
| 110 | 0x6e | 156 | 01101110 | n |
| 111 | 0x6f | 157 | 01101111 | o |
| 112 | 0x70 | 160 | 01110000 | p |
| 113 | 0x71 | 161 | 01110001 | q |
| 114 | 0x72 | 162 | 01110010 | r |
| 115 | 0x73 | 163 | 01110011 | s |
| 116 | 0x74 | 164 | 01110100 | t |
| 17 | 0x75 | 165 | 01110101 | u |
| 118 | 0x76 | 166 | 01110110 | v |
| 119 | 0x77 | 167 | 01110111 | w |
| 120 | 0x78 | 170 | 01111000 | x |
| 121 | 0x79 | 171 | 01111001 | y |
| 122 | 0x7a | 172 | 01111010 | z |
| 123 | 0x7b | 173 | 01111011 | { |
| 124 | 0x7c | 174 | 01111100 | \| |
| 125 | 0x7d | 175 | 01111101 | } |
| 126 | 0x7e | 176 | 01111110 | ~ |
| 127 | 0x7f | 177 | 01111111 | |
| 128 | 0x80 | 200 | 10000000 | € |
| 129 | 0x81 | 201 | 10000001 | |
| 130 | 0x82 | 202 | 10000010 | ‚ |
| 131 | 0x83 | 203 | 10000011 | ƒ |
| 132 | 0x84 | 204 | 10000100 | „ |
| 133 | 0x85 | 205 | 10000101 | … |
| 134 | 0x86 | 206 | 10000110 | † |
| 135 | 0x87 | 207 | 10000111 | ‡ |
| 136 | 0x88 | 210 | 10001000 | ˆ |
| 137 | 0x89 | 211 | 10001001 | ‰ |
| 138 | 0x8a | 212 | 10001010 | Š |
| 139 | 0x8b | 213 | 10001011 | ‹ |
| 140 | 0x8c | 214 | 10001100 | Π|
| 141 | 0x8d | 215 | 10001101 | |
| 142 | 0x8e | 216 | 10001110 | Ž |
| 143 | 0x8f | 217 | 10001111 | |
| 144 | 0x90 | 220 | 10010000 | |
| 145 | 0x91 | 221 | 10010001 | ‘ |
| 146 | 0x92 | 222 | 10010010 | ’ |
| 147 | 0x93 | 223 | 10010011 | “ |
| 148 | 0x94 | 224 | 10010100 | ” |
| 149 | 0x95 | 225 | 10010101 | • |
| 150 | 0x96 | 226 | 10010110 | – |
| 151 | 0x97 | 227 | 10010111 | — |
| 152 | 0x98 | 230 | 10011000 | ˜ |
| 153 | 0x99 | 231 | 10011001 | ™ |
| 154 | 0x9a | 232 | 10011010 | š |
| 155 | 0x9b | 233 | 10011011 | › |
| 156 | 0x9c | 234 | 10011100 | œ |
| 157 | 0x9d | 235 | 10011101 | |
| 158 | 0x9e | 236 | 10011110 | ž |
| 159 | 0x9f | 237 | 10011111 | Ÿ |
| 160 | 0xa0 | 240 | 10100000 | |
| 161 | 0xa1 | 241 | 10100001 | ¡ |
| 162 | 0xa2 | 242 | 10100010 | ¢ |
| 163 | 0xa3 | 243 | 10100011 | £ |
| 164 | 0xa4 | 244 | 10100100 | ¤ |
| 165 | 0xa5 | 245 | 10100101 | ¥ |
| 166 | 0xa6 | 246 | 10100110 | ¦ |
| 167 | 0xa7 | 247 | 10100111 | § |
| 168 | 0xa8 | 250 | 10101000 | ¨ |
| 169 | 0xa9 | 251 | 10101001 | © |
| 170 | 0xaa | 252 | 10101010 | ª |
| 171 | 0xab | 253 | 10101011 | « |
| 172 | 0xac | 254 | 10101100 | ¬ |
| 173 | 0xad | 255 | 10101101 | |
| 174 | 0xae | 256 | 10101110 | ® |
| 175 | 0xaf | 257 | 10101111 | ¯ |
| 176 | 0xb0 | 260 | 10110000 | ° |
| 177 | 0xb1 | 261 | 10110001 | ± |
| 178 | 0xb2 | 262 | 10110010 | ² |
| 179 | 0xb3 | 263 | 10110011 | ³ |
| 180 | 0xb4 | 264 | 10110100 | ´ |
| 181 | 0xb5 | 265 | 10110101 | µ |
| 182 | 0xb6 | 266 | 10110110 | ¶ |
| 183 | 0xb7 | 267 | 10110111 | · |
| 184 | 0xb8 | 270 | 10111000 | ¸ |
| 185 | 0xb9 | 271 | 10111001 | ¹ |
| 186 | 0xba | 272 | 10111010 | º |
| 187 | 0xbb | 273 | 10111011 | » |
| 188 | 0xbc | 274 | 10111100 | ¼ |
| 189 | 0xbd | 275 | 10111101 | ½ |
| 190 | 0xbe | 276 | 10111110 | ¾ |
| 191 | 0xbf | 277 | 10111111 | ¿ |
| 192 | 0xc0 | 300 | 11000000 | À |
| 193 | 0xc1 | 301 | 11000001 | Á |
| 194 | 0xc2 | 302 | 11000010 | Â |
| 195 | 0xc3 | 303 | 11000011 | Ã |
| 196 | 0xc4 | 304 | 11000100 | Ä |
| 197 | 0xc5 | 305 | 11000101 | Å |
| 198 | 0xc6 | 306 | 11000110 | Æ |
| 199 | 0xc7 | 307 | 11000111 | Ç |
| 200 | 0xc8 | 310 | 11001000 | È |
| 201 | 0xc9 | 311 | 11001001 | É |
| 202 | 0xca | 312 | 11001010 | Ê |
| 203 | 0xcb | 313 | 11001011 | Ë |
| 204 | 0xcc | 314 | 11001100 | Ì |
| 205 | 0xcd | 315 | 11001101 | Í |
| 206 | 0xce | 316 | 11001110 | Î |
| 207 | 0xcf | 317 | 11001111 | Ï |
| 208 | 0xd0 | 320 | 11010000 | Ð |
| 209 | 0xd1 | 321 | 11010001 | Ñ |
| 210 | 0xd2 | 322 | 11010010 | Ò |
| 211 | 0xd3 | 323 | 11010011 | Ó |
| 212 | 0xd4 | 324 | 11010100 | Ô |
| 213 | 0xd5 | 325 | 11010101 | Õ |
| 214 | 0xd6 | 326 | 11010110 | Ö |
| 215 | 0xd7 | 327 | 11010111 | × |
| 216 | 0xd8 | 330 | 11011000 | Ø |
| 217 | 0xd9 | 331 | 11011001 | Ù |
| 218 | 0xda | 332 | 11011010 | Ú |
| 219 | 0xdb | 333 | 11011011 | Û |
| 220 | 0xdc | 334 | 11011100 | Ü |
| 221 | 0xdd | 335 | 11011101 | Ý |
| 222 | 0xde | 336 | 11011110 | Þ |
| 223 | 0xdf | 337 | 11011111 | ß |
| 224 | 0xe0 | 340 | 11100000 | à |
| 225 | 0xe1 | 341 | 11100001 | á |
| 226 | 0xe2 | 342 | 11100010 | â |
| 227 | 0xe3 | 343 | 11100011 | ã |
| 228 | 0xe4 | 344 | 11100100 | ä |
| 229 | 0xe5 | 345 | 11100101 | å |
| 230 | 0xe6 | 346 | 11100110 | æ |
| 231 | 0xe7 | 347 | 11100111 | ç |
| 232 | 0xe8 | 350 | 11101000 | è |
| 233 | 0xe9 | 351 | 11101001 | é |
| 234 | 0xea | 352 | 11101010 | ê |
| 235 | 0xeb | 353 | 11101011 | ë |
| 236 | 0xec | 354 | 11101100 | ì |
| 237 | 0xed | 355 | 11101101 | í |
| 238 | 0xee | 356 | 11101110 | î |
| 239 | 0xef | 357 | 11101111 | ï |
| 240 | 0xf0 | 360 | 11110000 | ð |
| 241 | 0xf1 | 361 | 11110001 | ñ |
| 242 | 0xf2 | 362 | 11110010 | ò |
| 243 | 0xf3 | 363 | 11110011 | ó |
| 244 | 0xf4 | 364 | 11110100 | ô |
| 245 | 0xf5 | 365 | 11110101 | õ |
| 246 | 0xf6 | 366 | 11110110 | ö |
| 247 | 0xf7 | 367 | 11110111 | ÷ |
| 248 | 0xf8 | 370 | 11111000 | ø |
| 249 | 0xf9 | 371 | 11111001 | ù |
| 250 | 0xfa | 372 | 11111010 | ú |
| 251 | 0xfb | 373 | 11111011 | û |
| 252 | 0xfc | 374 | 11111100 | ü |
| 253 | 0xfd | 375 | 11111101 | ý |
| 254 | 0xfe | 376 | 11111110 | þ |
| 255 | 0xff | 377 | 11111111 | ÿ |Easy to learn hexadecimal, right? Hehehe ..., if you don't understand, well I can't help you, your brain is probably dead from the start. 
OK, that's all for now, I've been making a special table for all of you Underground lovers. Regards: Capsoel OK.
Mailto : capsule_ok(@)yahoo.co.id
Copyright / License:
- All X-Code Magazine materials can be downloaded, read, modified and distributed freely for non-commercial purposes, provided that the author's attributes are not deleted or changed.
- Copyright is in the hands of the author and X-Code Magazine by following the GPL (General Public License) license.
X-Code Magazine No. 5 Writer:
- Capsoel OK
- KanJoko (KanXreeN)
- FiSH AKA SpICY
- family_code
- lEO_rETRo
- Bangs
- ConanZ
- orchard_road
- achjun[at]gmail.com