import struct, sys, io
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')

data = open('HAVOC_NOCD.EXE','rb').read()
FO2VA = lambda fo: fo + 0x400C00
VA2FO = lambda va: va - 0x400C00

# Show context around the "missing from the HAVOC directory" string
fo = 0x6bec5
print("=== Context around FO 0x%05x ===" % fo)
start = fo - 0x80
end = fo + 0x80
chunk = data[start:end]
for i in range(0, len(chunk), 16):
    row = chunk[i:i+16]
    hex_part = ' '.join('%02x' % b for b in row)
    asc_part = ''.join(chr(b) if 32 <= b < 127 else '.' for b in row)
    print("FO 0x%05x: %-47s  %s" % (start+i, hex_part, asc_part))

print()
print("=== Callers of 'missing' string at FO 0x6BEC5 VA 0x46CAC5 ===")
target = 0x46cac5
for fo2 in range(0x400, 0x67000):
    if data[fo2] == 0x68:  # PUSH imm32
        imm = struct.unpack_from('<I', data, fo2+1)[0]
        if imm == target:
            print("  PUSH 0x46CAC5 at FO 0x%05x VA 0x%08x" % (fo2, FO2VA(fo2)))

# Also look for what calls the string display - search for any CALL near those PUSHes
print()
print("=== Reading STRDATA.DAT ===")
try:
    sd = open('STRDATA.DAT','rb').read()
    print("Size: %d bytes" % len(sd))
    # Try to find "corrupt" in it
    for needle in [b'corrupt', b'unavail', b'Corrupt', b'Unavail']:
        idx = sd.find(needle)
        if idx != -1:
            print("Found '%s' at offset 0x%x: %r" % (needle.decode(), idx, sd[max(0,idx-20):idx+60]))
    # Show first 256 bytes as text
    print("First 200 bytes:")
    printable = ''.join(chr(b) if 32 <= b < 127 else ('\\x%02x' % b) for b in sd[:200])
    print(printable)
except Exception as e:
    print("Error: %s" % e)