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| author | Ajax <commial@gmail.com> | 2017-05-09 13:46:49 +0200 |
|---|---|---|
| committer | Ajax <commial@gmail.com> | 2017-05-09 15:19:57 +0200 |
| commit | 72a446decb00be032f4f80c729b01469ce955e94 (patch) | |
| tree | cb0d073bde20fc325097beaa8e09c383f912b901 | |
| parent | 03063d96a950101a9fdf5a4c42eec81450b5c4b7 (diff) | |
| download | miasm-72a446decb00be032f4f80c729b01469ce955e94.tar.gz miasm-72a446decb00be032f4f80c729b01469ce955e94.zip | |
Fix strcpyn behavior at limit
| -rw-r--r-- | miasm2/os_dep/win_api_x86_32.py | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/miasm2/os_dep/win_api_x86_32.py b/miasm2/os_dep/win_api_x86_32.py index d9c659d3..b223fa89 100644 --- a/miasm2/os_dep/win_api_x86_32.py +++ b/miasm2/os_dep/win_api_x86_32.py @@ -1418,8 +1418,10 @@ def kernel32_lstrcpyn(jitter): ret_ad, args = jitter.func_args_stdcall(["ptr_str1", "ptr_str2", "mlen"]) s2 = jitter.get_str_ansi(args.ptr_str2) - s2 = s2[:args.mlen] - jitter.vm.set_mem(args.ptr_str1, s2) + if len(s2) >= args.mlen: + s2 = s2[:args.mlen - 1] + log.info("Copy '%r'", s2) + jitter.set_str_ansi(args.ptr_str1, s2) jitter.func_ret_stdcall(ret_ad, args.ptr_str1) |