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Command hexdump

Imitation of the WinDBG command.

This command takes 4 optional arguments:

  • The format for representing the data (by default, byte)
  • A value/address/symbol used as the location to print the hexdump from (by default, $sp)
  • The number of qword/dword/word/bytes to display (by default, 64 if the format is byte, 16 otherwise)
  • The direction of output lines (by default, from low to high addresses)

hexdump byte will also try to display the ASCII character values if the byte is printable (similarly to the hexdump -C command on Linux).

The syntax is as following:

hexdump (qword|dword|word|byte) [-h] [--reverse] [--size SIZE] [address]


  • Display 4 QWORDs from $pc:
gef➤  hexdump qword $pc --size 4
0x7ffff7a5c1c0+0000 │ 0x4855544155415641
0x7ffff7a5c1c0+0008 │ 0x0090ec814853cd89
0x7ffff7a5c1c0+0010 │ 0x377d6f058b480000
0x7ffff7a5c1c0+0018 │ 0x748918247c894800
  • Display 32 bytes from a location in the stack:
gef➤  hexdump byte 0x00007fffffffe5e5 --size 32
0x00007fffffffe5e5     2f 68 6f 6d 65 2f 68 75 67 73 79 2f 63 6f 64 65     /home/hugsy/code
0x00007fffffffe5f5     2f 67 65 66 2f 74 65 73 74 73 2f 77 69 6e 00 41     /gef/tests/win.A
  • Display 8 WORDs from $sp in reverse order:
gef➤  hexdump word 8 --reverse
0x00007fffffffe0ee│+0x000e   0x0000
0x00007fffffffe0ec│+0x000c   0x7fff
0x00007fffffffe0ea│+0x000a   0xffff
0x00007fffffffe0e8│+0x0008   0xe3f5
0x00007fffffffe0e6│+0x0006   0x0000
0x00007fffffffe0e4│+0x0004   0x0000
0x00007fffffffe0e2│+0x0002   0x0000
0x00007fffffffe0e0│+0x0000   0x0001