Created
March 28, 2016 17:45
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function aob_search() | |
# use something to identify process id | |
pid = parse(Int, readall(`pidof osu\!.exe`)) | |
# maps file contains information about memory regions | |
# mem file is a pseudo-file containing process memory | |
maps_file = open("/proc/" * string(pid) * "/maps", "r") | |
mem_file = open("/proc/" * string(pid) * "/mem", "r") | |
pages = readall(maps_file); | |
close(maps_file) | |
lines = split(pages, '\n') | |
# its ok to manually edit this two lines, but remember | |
# that this arrays must be same size and type | |
search = [0x1d, 0xdd, 0x45, 0xf0, 0xdd, 0x1d] | |
buffer = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00] | |
offset = 0 | |
for line in lines | |
# filter only rwxp memory regions | |
# and only which are not assigned to any file | |
if length(line) != 40 || line[19:22] != "rwxp" | |
continue | |
end | |
# line starts with something like "12345678-1234567A" | |
# extract range start and end | |
rng = parse(Int, line[1:8], 16) : parse(Int, line[10:17], 16) | |
print("scanning range: ", line[1:17], '\n') | |
seek(mem_file, rng[1]) | |
# byte by byte reading every memory region | |
# and comparing scan buffer with search buffer | |
for offset_value in rng | |
# read a byte, move it to the end of the buffer, | |
# and pop buffer at the start | |
byte = readbytes(mem_file, 1) | |
buffer = append!(buffer[2:end], byte) | |
if buffer == search | |
offset = offset_value | |
break | |
end | |
end | |
if offset != 0 | |
break | |
end | |
end | |
if offset == 0 | |
print("search failed.\n") | |
return | |
end | |
# address is held next to the pattern | |
addr_arr = readbytes(mem_file, 4) | |
addr = addr_arr[1] + addr_arr[2]*0x100 + addr_arr[3]*0x10000 + addr_arr[4] * 0x1000000 | |
print("detected address: ", addr, '\n') | |
return addr, mem_file | |
end |
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