Add read_pwd_mem_spiffs.lua

client/luascripts/read_pwd_mem_spiffs.lua

@@ -0,0 +1,91 @@
+local getopt = require('getopt')
+local bin = require('bin')
+
+copyright = 'Copyright (c) 2019 Bogito. All rights reserved.'
+author = 'Bogito'
+version = 'v1.1.0'
+desc =
+[[
+This script will read the flash memory of RDV4 using SPIFFS and print the stored passwords.
+It was meant to be used as a help tool after using the BogRun standalone mode.
+]]
+example =
+[[
+    -- This will read the hf_bog.log file in SPIFFS and print the stored passwords
+    script run read_pwd_mem_spiffs
+
+    -- This will read the other.log file in SPIFFS and print the stored passwords
+    script run read_pwd_mem_spiffs -f other.log
+]]
+usage =
+[[
+Usage:
+    script run read_pwd_mem_spiffs -h -f <filename>
+
+Arguments:
+    -h              :  this help
+    -f <filename>   :  filename in SPIFFS
+]]
+---
+-- This is only meant to be used when errors occur
+local function oops(err)
+    print('ERROR:', err)
+    core.clearCommandBuffer()
+    return nil, err
+end
+---
+-- Usage help
+local function help()
+    print(copyright)
+    print(author)
+    print(version)
+    print(desc)
+    print('Example usage')
+    print(example)
+    print(usage)
+end
+---
+-- The main entry point
+local function main(args)
+
+    print( string.rep('--',20) )
+	print('Read passwords stored in memory (SPIFFS)')
+    print( string.rep('--',20) )
+    print()
+
+    local data, length, err
+    local cnt = 0
+    local filename = 'hf_bog.log'
+	local keylength = 4
+
+    for o, a in getopt.getopt(args, 'f:h') do
+	
+        -- help
+        if o == 'h' then return help() end
+
+        -- offset
+        if o == 'f' then filename = a end
+		
+	end
+	
+    data, length, err = core.GetFromFlashMemSpiffs(filename)
+    if data == nil then return oops('Problem while reading file from SPIFFS') end
+
+    --print('Filename', filename)	
+	--print('Filesize (B)', length)
+	
+	_, s = bin.unpack('H'..length, data)
+
+	local cnt = 0, i
+	for i = 1, length/keylength do
+		key  = string.sub(s, (i-1)*8+1, i*8)
+		if key == 'FFFFFFFF' then break end
+		print(string.format('[%02d] %s',i, key))
+		cnt = cnt + 1
+	end
+	print( string.rep('--',20) )
+	print( ('[+] found %d passwords'):format(cnt))
+
+end
+
+main(args)