(Asm) How to get 2nd string from given string?

[busclock]

I need to modify some source code. I need to get a 2nd string from given string which contains 2 string. The length of 1st string is always changed time to time. For example:

NuQW4CSS0Qpa8TnZ

or in hex:

01 01 01 01 01 01 01 01 1C 01 01 01 01 01 08 4E 75 51 57 34 43 53 53 01 01 01 01 01 08 30 51 70 61 38 54 6E 5A

the 1st string

NuQW4CSS (4E 75 51 57 34 43 53 53)

it begins with 1 byte in front (08) as the length of the string

the 2nd string

0Qpa8TnZ (30 51 70 61 38 54 6E 5A)

it also begins with 1 byte in front (08) as the length of the string

The problem in the source code i got is, it gets the 2nd string with fixed method, always get it from the 29th byte, which is actually the 2nd string is not always at that position.

getstring.zip

[Ufo-Pu55y]

something like this:

.if dx==BN_CLICKED	.IF ax==IDC_GET
		pushad
		mov esi, offset packet01
		.repeat
			lodsb
		.until al != 1 && byte ptr [esi+1] != 1
		mov	edi, offset GetHash01
		movzx ecx,al 
		rep	movsb
		.repeat
			lodsb
		.until al != 1
		mov	edi, offset GetHash02
		movzx ecx,al 
		rep	movsb
		invoke SetDlgItemText,hwwnd,EDIT_HASHSTRING1,addr GetHash01
		invoke SetDlgItemText,hwwnd,EDIT_HASHSTRING1,addr GetHash02
		popad	.ENDIF
.ENDIF