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Dump process memory in Linux. See this blog post for more: https://davidebove.com/blog/?p=1620
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| #! /usr/bin/env python3 | |
| import sys | |
| import re | |
| if __name__ == "__main__": | |
| if len(sys.argv) != 2: | |
| print('Usage:', sys.argv[0], '<process PID>', file=sys.stderr) | |
| exit(1) | |
| pid = sys.argv[1] | |
| # maps contains the mapping of memory of a specific project | |
| map_file = f"/proc/{pid}/maps" | |
| mem_file = f"/proc/{pid}/mem" | |
| # output file | |
| out_file = f'{pid}.dump' | |
| # iterate over regions | |
| with open(map_file, 'r') as map_f, open(mem_file, 'rb', 0) as mem_f, open(out_file, 'wb') as out_f: | |
| for line in map_f.readlines(): # for each mapped region | |
| m = re.match(r'([0-9A-Fa-f]+)-([0-9A-Fa-f]+) ([-r])', line) | |
| if m.group(3) == 'r': # readable region | |
| start = int(m.group(1), 16) | |
| end = int(m.group(2), 16) | |
| mem_f.seek(start) # seek to region start | |
| print(hex(start), '-', hex(end)) | |
| try: | |
| chunk = mem_f.read(end - start) # read region contents | |
| out_f.write(chunk) # dump contents to standard output | |
| except OSError: | |
| print(hex(start), '-', hex(end), '[error,skipped]', file=sys.stderr) | |
| continue | |
| print(f'Memory dump saved to {out_file}') |
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