How can I decrypt data that i get from unkown app on Follow Tcp Stream

How can I decrypt data that i get from unkown app on Follow Tcp Stream this data contain user and password

This is the code that i get in Follow TCP STREAM by ASCII

.([email protected]~.z.?~.Q.G...dA>..G..!..........w[AN...(....=JB........P.jb.|........E.)....iC...=...z.?~.Yb  gA........f..tP.t-?....%r.$.._%o&.......-=q..Z.Q.4bo
45Y."V.o.7p..m...fH....)9......L....^?./.[#.........n.h4...V.5.
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.%.............>..SE.J..........."[email protected]?6z.sH.rf..5 ..&............C.~.na..}...<....-
.,<4U..UN...B.X.h.).X.f..D......}..F3.d..$. ...R.o5.....).[|..2.^u[=....}......#..;,.2
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Q.....A...{.c!.2..Wa3.......Q..z.?~.v.v...]"..d...s..e..Q.>.......d.L.J.g+e.....[.t...........~..zD.c....:.....o........;G.w.%yC.6..r.m.].....N..L.f......Y+...
oL..:..\Kpb0.9..
.4{./.....oqI]...%.0..&[......G.y#....h......%[email protected]{8vR...}.S+H......fv.X..q..#...%%p>..N.;[email protected]]Y..i..paR.....&.<....Wd....... d".......h..%.......F.n...
...h......%..h.M.......Lt...E.,:/.....c< ...vAG{8vR...}.S+H......fv.X..q..#...%%p>..N.;[email protected]]Y..i..paR.....&.<....Wd....... d".......h..%.......F.n...
...h......%..h.M......j.t...q....t.....m..;.l..D..x.5.G9......Cv.a.{.<..5........."... ..h....eQv_.x.B.S.WM...
./2..=..}..y.ob..aK...U.i....S...d..$:l....o.P-,....Q...O..0~.....r..O...W.f.....bt......l.'.i..........S........#D.W..u..........Q~q...I..ZwA../B....[...~.%....y.ygx|[email protected]>%_:..0ee%.U......V......K...z.+.E... ..4w+78.    L$.F.....tm/e.9..a..8Nn.. ...
k:<..e5.1..3r.z.t9... ..^..].u..*2F...0.+...e{[email protected]^<.... ;B<lT..i".....h#d..t.....O..!...a.....o.4n..9....2..cE..#.L..ur*T...F......%T.lqL.
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L....X..p#.!........<o.6...g.5....4X....L.'S..................../D.....
..5.7.....KD.LKDSr#...Ur    .rr 7..........#.y.....T".{ :o.8....Q.. .6..........C....|fb..W<...Y.\@...).....>...R...    iR=..,..5w{@...>BZ.n..  ....v=QK4e........y.d.)]...O..~J8^|.,..8P...su...{w.+G.f4.f...
...D%..]. F...L......?..R~...7E.G.2_52|.#..V..R.0..m..O).),4.Z.......!....)..Q.Of./.|....>.U..(d..  .?W[H8..)#".......~C.\.....!].....~l....l.-...wG1*&g.f....4.{...Q.=K.-J.}8.0.1."w......,..e..Q.+(X..).u>>.9.(*..B