etc

~ scripts and random things
git clone https://github.com/djnnvx/etc.git
dump_proc (1254B)
      1 #!/usr/bin/env python3
      2 
      3 import ctypes, re, sys
      4 
      5 # Load libc.so.6 dynamically
      6 libc = ctypes.CDLL("libc.so.6")
      7 c_ptrace = libc.ptrace
      8 c_pid_t = ctypes.c_int32
      9 c_ptrace.argtypes = [ctypes.c_int, c_pid_t, ctypes.c_void_p, ctypes.c_void_p]
     10 
     11 def ptrace(attach, pid):
     12     op = ctypes.c_int(16 if attach else 17)  # PTRACE_ATTACH or PTRACE_DETACH
     13     c_pid = c_pid_t(pid)
     14     null = ctypes.c_void_p()
     15     err = c_ptrace(op, c_pid, null, null)
     16     if err != 0:
     17         raise OSError('ptrace')
     18 
     19 def maps_line_range(line):
     20     m = re.match(r'([0-9A-Fa-f]+)-([0-9A-Fa-f]+) ([-r])', line)
     21     if not m:
     22         return []
     23     return [int(m.group(1), 16), int(m.group(2), 16), m.group(3)]
     24 
     25 def cat_proc_mem(pid):
     26     ptrace(True, int(pid))
     27     maps_file_path = f"/proc/{pid}/maps"
     28     with open(maps_file_path, 'r') as maps_file:
     29         ranges = map(maps_line_range, maps_file.readlines())
     30 
     31     mem_file_path = f"/proc/{pid}/mem"
     32     with open(mem_file_path, 'rb') as mem_file:
     33         for r in ranges:
     34             if r[2] == 'r':
     35                 mem_file.seek(r[0])
     36                 chunk = mem_file.read(r[1] - r[0])
     37                 print(chunk, end='')
     38 
     39     ptrace(False, int(pid))
     40 
     41 if __name__ == "__main__":
     42     for pid in sys.argv[1:]:
     43         cat_proc_mem(pid)
     44